DE102019210022A1 - Heat exchanger module and method for manufacturing the heat exchanger module - Google Patents

Abstract

The invention relates to a heat exchanger module (1) for an air conditioning system in a motor vehicle. The heat exchanger module (1) comprises a condenser (2) for cooling the refrigerant and a collector (3) for collecting and / or drying and / or storing the refrigerant. The condenser (2) and the collector (3) form a storage circuit (4) in which the refrigerant can flow from the condenser (2) to the collector (3) and from the collector (3) back to the condenser (2) . The capacitor (2) has a stack (5) of several stacking disks (6) stacked on one another in the stacking direction (SR). The stack (5) is arranged in the stacking direction (SR) between a front or first base plate (7) and a rear or second base plate (8). Between adjacent stacking disks (6), hollow spaces (9, 10) closed to the outside are formed, through which the refrigerant and the coolant can alternately flow, so that the refrigerant and the coolant in the condenser (2) are coupled to one another to transfer heat. According to the invention, the collector (3) rests against one of the base plates (7, 8) of the condenser (2) from the outside and is at least partially soldered to it. The invention also relates to a method for producing the heat exchanger module (1).

Description

The invention relates to a heat exchanger module for an air conditioning system of a motor vehicle according to the preamble of claim 1. The invention also relates to a method for producing the heat exchanger module.

In addition to further elements, an air conditioning system of a motor vehicle usually also has a condenser and a collector. In the condenser, the refrigerant is cooled to the condensation temperature and condensed. The collector is usually arranged downstream of the condenser. The refrigerant can be filtered, stored and dried in the collector. The refrigerant is then fed back into the condenser, where it is subcooled below the condensation temperature. The condenser and the collector are often combined in a heat exchanger module. For this purpose, the collector can be fixed to the capacitor, for example, by a flange connection, as for example in FIG EP 2 927 631 B1 , FR 3 000 183 B1 , WO 2010/08907 A1 , DE 10 2016 001 607 A1 , US 2016/0327318 A1 and US 2009/0071189 A1 is described. Alternatively, the collector can be integrated into the capacitor, for example in FIG FR 2 947 041 A1 is revealed. Disadvantageously, the solutions mentioned are associated with a high level of manufacturing expense. This disadvantageously also increases the production costs of the heat exchanger module.

The object of the invention is therefore to provide an improved or at least alternative embodiment for a heat exchanger module of the generic type in which the disadvantages described are overcome. Furthermore, a corresponding improved or at least alternative method for producing the heat exchanger module is to be provided.

These objects are achieved according to the invention by the subject matter of the independent claims. Advantageous embodiments are the subject of the dependent claims.

A heat exchanger module is provided for an air conditioning system of a motor vehicle and comprises a condenser for cooling the refrigerant and a collector for collecting and / or drying and / or storing the refrigerant. The collector and the condenser form a storage circuit in which the refrigerant can flow from the condenser to the collector and from the collector back to the condenser. The capacitor has a stack of several stacked disks stacked one on top of the other in the stacking direction. The stack is arranged in the stacking direction between a front or first base plate and a rear or second base plate. Hollow spaces that are closed to the outside are formed between adjacent stacking disks. The cavities can alternately be flowed through by the coolant and the coolant, so that the coolant and the coolant in the condenser are coupled to one another in a heat-transferring manner. According to the invention, the collector rests against one of the base plates of the capacitor from the outside and is soldered to it at least in certain areas. The collector is preferably soldered to the rear or second base plate at least in certain areas. The collector can be in direct contact with the respective base plate over a large area. The collector is preferably completely soldered to the respective base plate. A filter and / or a dryer bag and / or a distributor can advantageously be arranged in the collector.

Advantageously, the solution according to the invention can reduce the manufacturing costs. In particular, additional, conventionally required flanges and screw connections are not required in the heat exchanger module according to the invention. The capacitor itself or the individual stacked disks in the capacitor can remain unchanged or be designed in a conventionally known manner, so that no additional costs arise as a result. The heat exchanger module according to the invention advantageously also has a higher strength.

The collector can advantageously comprise a housing with a hollow cylindrical wall, with a base and with a plug. The bottom and the stopper then close the wall axially on both sides. As a result, an outwardly fluid-tight interior can be formed in which a filter and / or a dryer bag and / or a distributor can then be arranged. In addition, a flat flat area can be formed on the outside of the wall of the housing so that the wall of the housing is D-shaped. The collector then rests on the respective base plate with the flat area and is soldered to the respective base plate over the flat area. The flat area enables extensive contact between the housing of the collector and the respective base plate. The wall of the collector can be extruded, for example, and the bottom of the housing can be soldered to the wall. The stopper can then close the wall on the other side in a fluid-tight manner. The stopper can advantageously be made of plastic, for example.

In a development of the solution according to the invention, it is provided that at least one holding unit is firmly bonded to the collector or is integrally formed on the collector. The The collector is then additionally fixed to the capacitor in a form-fitting and / or material-locking manner by means of the at least one holding unit. The positive connection can be, for example, a plug connection and the material connection can be, for example, a soldered connection or a welded connection.

The invention also relates to a method for producing the heat exchanger module described above. The D-shaped wall of the collector is extruded with the flat area and soldered to the bottom. In addition, one of the baseplates of the capacitor and the flat area of the wall are soldered to one another at least in some areas. The wall of the housing is also closed in a fluid-tight manner by the plug. In the method according to the invention, the heat exchanger module can be produced simply and at reduced cost.

Advantageously, the bottom can be soldered to the wall and the wall can be soldered to the base plate at the same time. A filter and / or a dryer bag and / or a distributor can advantageously be arranged in the housing of the collector after the bottom has been soldered to the wall and after the wall has been soldered to the base plate. The wall of the housing can then be closed in a fluid-tight manner by the plug. Advantageously, the collector can additionally be fixed on the capacitor in a form-fitting and / or material-fitting manner by means of the at least one holding unit. The form-fit connection can be, for example, a plug connection and the material connection can be, for example, a soldered connection or a welded connection.

Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures on the basis of the drawings.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention.

Preferred exemplary embodiments of the invention are shown in the drawings and are explained in more detail in the following description, with the same reference symbols referring to the same or similar or functionally identical components.

• 1 eine Schnittansicht eines erfindungsgemäßen Wärmeübertragermoduls;
• 2 eine Schnittansicht eines Sammlers in dem erfindungsgemäßen Wärmeübertragermodul;
• 3 und 4 Ansichten des erfindungsgemäßen Wärmeübertragermoduls mit abweichend ausgestalteten Sammlern;
• 5 und 6 Ansichten abweichend ausgestalteter Sammlern für das erfindungsgemäße Wärmeübertragermodul.

It show each schematically

• 1 a sectional view of a heat exchanger module according to the invention;
• 2 a sectional view of a collector in the heat exchanger module according to the invention;
• 3 and 4th Views of the heat exchanger module according to the invention with collectors configured differently;
• 5 and 6th Views of differently designed collectors for the heat exchanger module according to the invention.

1 shows a sectional view of a heat exchanger module according to the invention 1 for an air conditioning system for a motor vehicle. The heat exchanger module 1 includes a capacitor 2 for cooling the refrigerant and a collector 3 . The collector 3 is intended for collecting and / or drying and / or storing the refrigerant. The collector 3 can have a filter and / or a dryer bag and / or a distributor - not shown here - and be constructed in a manner known to the person skilled in the art. The condenser 2 assigns a stack 5 on, of several stacked disks stacked one on top of the other in the stacking direction SR 6th is formed. The individual stacking discs 6th are soldered to one another over their edges. The stack 5 is in the stacking direction SR between a front or first base plate 7th and a rear or second base plate 8th arranged. The base plates 7th and 8th are with the last stacked slices 6th in the pile 5 soldered. Between the neighboring stacking discs 6th are hollow spaces that are closed to the outside 9 and 10 educated. The condenser 2 is therefore a stacked plate heat exchanger and is basically constructed in a manner known to a person skilled in the art.

The cavities 9 are intended for the refrigerant to flow through and are via two refrigerant channels aligned in the stacking direction SR 11 fluidically connected to each other. The cavities 10 are provided for the flow of coolant and are via two coolant channels aligned in the stacking direction SR 12 fluidically connected to each other. The respective refrigerant channels 11 each form an inlet and an outlet for the refrigerant and the respective coolant channels 12 each form an inlet and an outlet for the coolant. The refrigerant flows through the inlet into the individual cavities 9 and from these then through the process to the outside. The coolant flows accordingly into the individual cavities via the inlet 10 and then via the drain to the outside. The cavities 9 and 10 are in the capacitor 2 arranged alternately in the stacking direction SR, so that the refrigerant and the coolant in the capacitor 2 are coupled to each other in a heat transferring manner. The condenser 2 and the collector 3 thereby form a supply cycle 4th in which the refrigerant to the collector 3 and from the collector 3 back to the capacitor 2 can flow. The stock cycle 4th is in 1 indicated with arrows.

The collector 3 lies on the rear or second base plate 8th of the capacitor 2 from the outside and is soldered to this. Between the collector 3 and the capacitor 2 there is therefore a flat and even large-area direct contact. The collector 3 has a housing 13 on, which has a hollow cylindrical wall 14th , a floor 15th and a stopper 16 made of plastic. The floor 15th and the stopper 16 close the wall 14th axially on both sides. On the wall 14th of the housing 13 is a flat area on the outside 17th shaped by the collector 3 on the rear or second base plate 8th and over which the collector 3 with the capacitor 2 is soldered. Through the flat area 17th is the wall 14th of the housing 13 D-shaped and can be extruded, for example. The floor 15th can then with the wall 14th be soldered and the plug 16 can the wall 14th close fluid-tight on the other side. The collector 3 is so on the capacitor 2 aligned that the longitudinal axis of the collector 3 and the longitudinal axis of the individual stacking discs 6th or the longitudinal axis of the rear or second base plate 2 in the condenser 2 are aligned parallel.

The structure of the heat exchanger module 1 simplified and manufacturing costs can be reduced. In particular, are omitted in the heat exchanger module 1 additional conventionally required flanges and screw connections. In addition, the heat exchanger module according to the invention 1 a higher strength.

2 a sectional view of the collector 3 in the heat exchanger module according to the invention 1 . As already explained above, is on the wall 14th of the housing 13 the flat flat area 17th shaped. Through the flat area 17th is the wall 14th of the housing 13 D-shaped.

3 and 4th show views of the heat exchanger module according to the invention 1 with the differently designed collectors 3 . In 3 is the collector 3 configured as described above. In 4th is to the collector 3 a holder 18th firmly established or on the collector 3 integrally formed by the heat exchanger module 1 can be fixed on other components of the motor vehicle.

5 and 6th show views of the differently designed collectors 3 for the heat exchanger module according to the invention 1 . In 5 instructs the collector 3 a holding unit 19th on through which the collector 3 on the capacitor 2 can also be fixed in a form-fitting manner. In 6th instructs the collector 3 the holder 18th which, however, differs from the holder 18th in 4th is designed.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• EP 2927631 B1 [0002]
• FR 3000183 B1 [0002]
• WO 2010/08907 A1 [0002]
• DE 102016001607 A1 [0002]
• US 2016/0327318 A1 [0002]
• US 2009/0071189 A1 [0002]
• FR 2947041 A1 [0002]

Claims (10)

Heat transfer module (1) for an air conditioning system of a motor vehicle, - the heat transfer module (1) comprising a condenser (2) for cooling the refrigerant and a collector (3) for collecting and / or drying and / or storing the refrigerant, - the condenser (2) and the collector (3) form a storage circuit (4) in which the refrigerant can flow from the condenser (2) to the collector (3) and from the collector (3) back to the condenser (2), wherein the capacitor (2) has a stack (5) of several stacking disks (6) stacked on one another in the stacking direction (SR), - the stack (5) in the stacking direction (SR) between a front or first base plate (7) and a rear or second base plate (8) is arranged, and - wherein between adjacent stacking plates (6) closed cavities (9, 10) are formed, through which the refrigerant and the coolant can alternately flow, so that the refrigerant and the coolant in the condenser (2) are coupled to one another in a heat transferring manner, characterized in that the collector (3) rests against one of the base plates (7, 8) of the condenser (2) from the outside and is at least partially soldered to it. Heat exchanger module according to Claim 1 , characterized in that the collector (3) comprises a housing (13) with a hollow cylindrical wall (14), with a base (15) and with a stopper (16), the base (15) and the stopper (16) the wall (14) close axially on both sides. Heat exchanger module according to Claim 2 , characterized in that - that on the outside of the wall (14) of the housing (13) a flat flat area (17) is formed so that the wall (14) of the housing (13) is D-shaped, and - that the collector ( 3) rests on the respective base plate (7, 8) with the flat area (17) and is soldered. Heat exchanger module according to Claim 2 or 3 , characterized in - that the wall (14) of the housing (13) is extruded and the bottom (15) of the housing (13) is soldered to the wall (14), and / or - that the plug (16) is the wall (14) closes fluid-tight. Heat exchanger module according to one of the Claims 1 to 4th , characterized in - that at least one holding unit (19) is firmly bonded to the collector (3) or is integrally formed on the collector (3), and - that the collector (3) on the condenser (2) additionally by means of the at least a holding unit (19) is fixed positively, preferably by a plug connection, and / or cohesively, preferably by a soldered connection or a welded connection. Heat exchanger module according to one of the Claims 1 to 5 , characterized in that a filter and / or a dryer bag and / or a distributor are arranged in the collector (3). Method for producing the heat exchanger module (1) according to one of the preceding claims, - The wall (14) of the housing (13) with the flat area (17) being extruded in a D-shape in the collector (3), - The wall (14) of the housing (13) being soldered to the bottom (15), - wherein one of the base plates (7, 8) of the capacitor (2) and the flat area (17) of the wall (14) are at least partially soldered to one another, and - The wall (14) of the housing (13) being closed in a fluid-tight manner by the plug (16). Procedure according to Claim 7 , characterized in that the bottom (15) is soldered to the wall (14) and the wall (14) to the respective base plate (7, 8) is carried out simultaneously. Procedure according to Claim 7 or 8th - characterized in - that after soldering the bottom (15) to the wall (14) and after soldering the wall (14) to the respective base plate (7, 8) a filter and / or a dryer bag and / or a distributor are arranged in the housing (13) of the collector (3), and - that the wall (14) of the housing (13) is then closed in a fluid-tight manner by the stopper (16). Method according to one of the Claims 7 to 9 , characterized in that the collector (3) is additionally fixed to the capacitor (2) by means of the at least one holding unit (19) in a form-fitting manner, preferably by a plug connection, and / or materially, preferably by a soldered connection or a welded connection.

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