DE102013218529A1 - Drying device and condenser for a refrigerating machine and method for producing a condenser for a refrigerating machine - Google Patents

Abstract

The invention relates to a drying device and a condenser with a drying device for a refrigerating machine, in particular of a motor vehicle, in which a flowable refrigerant circulates. According to the invention, it is provided that a dryer tube (9) of the dryer device is composed of two half-shells (10, 11), preferably made of a metal. Furthermore, the invention relates to a method for producing a condenser, wherein, among other things before soldering at least one screen (20) and / or a closure lid and / or a plug with one of the half-shells (10, 11) is joined and then the two Half shells (10, 11) of the dryer tube (9) are joined together.

Description

The invention relates to a drying device with a drying device for a refrigerating machine, in particular a motor vehicle, comprising a housing in which the drying device for collecting the moisture contained in the coolant is positioned and which has at least one inflow and / or outflow for a coolant of the refrigerator ,

Furthermore, the invention relates to a condenser also referred to as a condenser for a refrigerating machine, in particular a motor vehicle, wherein the condenser at least one header and / or manifold and a plurality of flowable refrigerant flow tubes and at least one dryer means for collecting the moisture contained in the refrigerant having.

The invention further relates to a method for producing a condenser for a refrigerating machine, in particular a motor vehicle, in which the condenser is joined from its individual components and connected in a furnace by soldering, wherein after the brazing of the condenser, a drying device in an at least one side open dryer tube the condenser used and then the at least one open end of the dryer tube is closed.

Moisture in the sense of the invention is the presence of water. The water can be present as water vapor or in a liquid state of matter, for example as an aerosol, in the coolant. This water should be removed from the coolant, especially before liquefaction. Water in the coolant, during liquefaction, can cause ice crystals to form, which can affect the function of the chiller. For the removal of moisture dryer systems are known, the desiccant absorbs the moisture. The moisture is registered, for example, when filling or emptying the air conditioning system.

From the publication DE 103 53 939 A1 For example, a condenser for the air conditioning system of a motor vehicle and a manufacturing method for a condenser are known. The condenser has a fin / fin register, flow tubes and header pipes arranged on both sides thereof, and a header which is connected to a header pipe through inlet and outlet ports and which contains a filter device, a seal and a dryer for the refrigerant. The filter device is formed integrally with a flow-guiding element. To produce the capacitor, this is assembled from its individual components and with the collector and connected in a soldering oven, the filter device and the dryer are used after soldering the capacitor in an at least one side open collector tube of the collector and then the open ends of the collector tube are permanently closed.

A method for producing a condenser for an air conditioning system of a motor vehicle is also disclosed in the document EP 1 978 316 A1 described. In this method, the process steps run sequentially, that first of the block, the collector tubes, the collector and the lower lid soldered capacitor soldered in a soldering oven, then deposited the dryer granules in the collector and finally the upper lid materially connected to the collector preferably by soldering becomes.

The publication DE 103 38 526 A1 describes a collector for a refrigerant of an air conditioner, comprising a housing having at least one inlet and at least one outlet opening for the refrigerant, with a chamber for receiving the refrigerant and at least one refrigerant-permeable separating member having a first and a second region of the Chamber separates from each other and in which an inner wall of the housing has one or more particular circumferential or one or more times interrupted projections or depressions for a support of the separating element. Furthermore, this document discloses a method for producing the collector, in which initially one or more projections are introduced into a housing inner wall of the collector, then a separating element is placed on the support means, then filled a dryer and in particular covered with a force distributor, in particular a movable pressure plate , on the dryer or the force distributor, a force storage device, in particular a compression spring is positioned on the power storage, in particular a second separation element or a housing wall is positioned, the energy storage, the second separation element or the housing wall depressed from the outside in the housing and the energy storage are biased, one or more further projections are introduced into the housing inner wall above the force accumulator, the second partition wall or the housing wall and the force accumulator is relieved from the outside and presses against the further projections or the second T raceway or the housing wall is pressed by the power storage against the other support means.

Finally, the document teaches DE 10 2004 059 799 A1 a device for exchanging heat, in particular for a motor vehicle, with at least one supply pipe for a flowable refrigerant, at least one header and / or distributor pipe, a plurality of Flow tubes and at least one drain pipe for the flowable refrigerant. In this device, at least one additional device for influencing at least one physical property of the flowable refrigerant is arranged in at least one section of at least one of these tubes. The auxiliary device has at least one dryer device, which comprises a drying refrigerant.

Against this background, the invention has the object, a drier, a condenser and a manufacturing method for a condenser of the type mentioned in such a way that in a simple and cost-effective manner, a dryer or a condenser can be realized with a dryer device.

This object is achieved with a dryer apparatus according to the features of claim 1. The subclaims relate to particularly expedient developments of the invention.

Thus, according to the invention, a drying device is provided in which the housing is a dryer tube, which is composed of two shaped half-shells. This makes it possible to produce the dryer device quickly and easily, in particular to easily place the parts to be positioned in the interior of the dryer tube in the dryer tube. Furthermore, it is now possible to provide a drying apparatus which consists largely of a metal. Such a dryer device is very durable. In this case, according to the invention, in particular the dryer tube is made of a metal. For the dryer device or the dryer tube, a light metal, for example aluminum, is preferably used.

It is advantageous that the inflow and / or outlet connection for the coolant is formed on one of the half shells. This embodiment allows the design of a simple geometry of the connecting region of the two half-shells. Ideally, the mutually facing edges of the two half-shells are oriented in parallel. The dryer tube is connected to a header and / or distributor tube of a condenser or a chiller via the inflow and / or outflow connection. This connection relates to the mechanical immovable holding the dryer tube to the header and / or manifold, but also for the refrigerant flow-open connection of the dryer tube to the header and / or manifold. Preferably, at least one of the inflow and / or the discharge nozzle is designed or manufactured in one piece with the half-shell.

According to an advantageous embodiment of the invention, it is provided that at a first end of the dryer tube, a closure lid is introduced into the dryer tube and / or at a first end opposite the second end of the dryer tube, a stopper is arranged with an axial opening. The opening has a cylindrical basic shape and is preferably oriented concentrically to the longitudinal axis of the dryer tube. In a particular embodiment of the plug, a closure mechanism, for example a thread or a bayonet closure, is formed on the lateral surface.

The plug and / or the closure lid may be made of a plastic, preferably they are made of a metal, in particular the same metal as the dryer tube. By choosing the same or in particular with regard to the thermal expansion of similar materials, a permanent secure flow-tight connection between the dryer tube and the plug and / or the closure lid can be created.

It has proved to be advantageous that in the opening of the plug, a sealing plug is arranged, which has a receptacle, in particular a hook for holding the dryer device in the dryer tube. In this way, the drying device can be introduced with the closure stopper simultaneously and with a handle in the dryer tube and positioned in this. The closure plug is preferably made of plastic or a different material from the material of the plug. According to a development of the closure plug has a lateral surface on which a closure mechanism, for example, a thread or a bayonet closure is formed. As a result, a safe and re-releasable mechanical connection between plug and dryer tube is easily realized. To improve the tightness is provided in a further embodiment, that on the lateral surface a receiving or abutment surface for a sealing means, for example, provided for an O-ring or the closure plug is frusto-conical.

The dryer device consists of a bag open for the coolant and moisture and a quantity of a drying granulate enclosed in the bag. Due to the releasably connected to the dryer tube sealing plug, the dryer device is interchangeable.

Furthermore, it has proved to be practical that a support frame with a sieve and / or a sieve is arranged in the dryer tube in the inflow and / or outflow neck. This is it possible to catch impurities, such as ice crystals. The sieve can be designed just. Preferably, however, it has a spatial shape surrounded by a peripheral collar. The collar can also have a spatial shape. The collar serves to fix the screen to the dryer tube and / or the support frame. In this contact region, the sieve is caulked and / or soldered to the dryer tube and / or the support frame.

The object is also achieved with a condenser according to the features of claim 6. According to the invention, a condenser is provided, which comprises a dryer apparatus according to at least one of the aforementioned feature and in which at least one header and / or manifold of the condenser is made in one piece and / or cohesively connected to a half-shell of the dryer device. The cohesive connection with the half-shell is designed so that the collector and / or manifold is directly connected to the half-shell or connected to the at least one inflow and / or outflow of the half-shell of the dryer tube. In this way, a mechanically strong and fluid-tight connection can be created, which also simplifies the production of the condenser. Preferably, the at least one collector and / or distributor tube of the condenser connected to the half-shell of the dryer device is also manufactured from a metal, in particular the same metal as the half-shell.

Based on its longitudinal extent, in a special embodiment of the condenser, the half-shell is oriented parallel to the collector pipe and / or distributor pipe. As a result, a very compact and flat design of the condenser is achieved. In a further development, the flow tubes and / or the inflow and / or outflow nozzles are oriented parallel to one another and / or perpendicular to the collector and / or distributor tube.

The dryer device, in particular the dryer tube, is arranged in the direction of flow of the refrigerant between the header tube and a drainage tube or between a feed tube and the distributor tube. As a result, the refrigerant is dried and / or cleaned either before reaching the condenser or before re-entering the refrigerant circuit.

The above object is further achieved by a method for producing a condenser according to the features of claim 7. The subclaims relate to particularly expedient developments of the invention.

According to the invention, a method for producing a liquefier is provided, in which, prior to soldering, at least one of the following process steps, preferably in the order given, is carried out.

One of the method steps is that a half shell of the bivalve dryer tube is joined with a header and / or manifold. This makes it possible to provide an assembly that is very good storage and transportable and can be mounted on the easily and with little effort further elements of the condenser, such as the flow tubes or the rest of the dryer device, in particular the internals in the dryer tube , Another of the process steps is that the header and / or manifold is fitted with flow tubes of the condenser.

Likewise, a method step is that at least one screen and / or a closure cap and / or a plug is joined to one of the half-shells of the dryer tube. Here it is possible that the said internals of the dryer tube are arranged on the half-shell connected to the collector and / or distributor tube or on the other half-shell.

In a further method step, the two half-shells of the dryer tube and / or the two half-shells of the at least one header and / or distributor tube are joined together. As a result, the corresponding tube is produced, in which the fixed components were already positioned before joining the two half-shells.

It has proven to be practical that a closure cap and / or a plug is mounted in the dryer tube after soldering. This can be done by a second soldering process or by other bonding methods, such as gluing, welding or vulcanization. At least the attachment of the plug is preferably carried out by an extrusion molding process.

Before joining, the individual parts of the drying device are produced. It has turned out to be particularly favorable that the half-shells are produced in a punch-bending process. This makes it possible to produce these as a semifinished product quickly and utilizing existing production facilities of metal processing. Here, it is furthermore advantageous that the at least one sieve is caulked and / or brazed with one of the half-shells or with a carrier frame that can be positioned in the dryer tube.

Finally, it has proven to be inexpensive that after insertion of the dryer device and the closing of the dryer tube a leak test of the dryer device or the entire condenser is performed.

A particular embodiment is that prior to joining the flow tubes with the header and / or manifold a plurality of flow tubes and fins to a network, also called register, are stacked. Again, this is advantageous in terms of transport and storage. So when joining the flow tubes with the collector and / or manifold only two modules must be performed to each other.

The drying device according to the invention or the condenser according to the invention are not limited to use in a motor vehicle. Similarly, it is possible to provide a stationary system, such as a refrigerator of a refrigerator or a climate condenser of a building air conditioning with the inventive devices.

In summary, it can be stated that the complexity of the assembly work has been reduced by the invention compared to the prior art. This leads at least to a cost advantage.

The invention allows numerous embodiments. To further clarify its basic principle, some of them are shown in the drawing and will be described below. The drawing shows in

1 a schematic representation of a first embodiment of a condenser;

2 a schematic representation of a section of the in 1 shown condenser with a dryer device;

3 a sectional view of in 2 shown drying device;

4 an enlarged section of the in 2 shown drying device;

5 a sectional view of the in the 1 to 4 shown dryer tube, which consists of two half-shells;

6 a view of a half-shell;

7 a sectional view of the dryer device of a second embodiment of a condenser;

8th a view of a sieve of in 7 shown dryer device from a first side;

9 a view of the in 8th shown sieves from a second page;

10 a sectional view of the dryer apparatus of a third embodiment of a condenser;

11 a view of a sieve of in 10 shown drying device;

12 a view of the in 11 shown sieve, positioned in a half-shell of the dryer device.

1 shows a first embodiment of a condenser 1 for a refrigerator of a motor vehicle. A liquefier 1 is also called a capacitor. In the liquefier 1 a gaseous refrigerant compressed by a compressor, not shown, of the refrigerating machine is converted into the liquid state of matter. In the designed as a heat exchanger condenser 1 condenses the gaseous refrigerant with heat release. The condenser 1 includes at least one header and / or manifold 2 and a variety of flow tubes for the flowable refrigerant, which together with fins in a network also called Übertragerregister 3 are summarized. The condenser has to be connected to the ducts of the chiller 1 a feed tube 4 and a drainpipe 5 , Furthermore, the liquefier is 1 at least one in the 3 . 4 . 6 . 7 . 10 . 12 illustrated dryer device 6 associated with collecting moisture contained in the refrigerant. The dryer device 6 is in a dryer device 7 positioned. The dryer device 7 has an inflow and outflow 8th over which the dryer device 7 open to flow with the one manifold and / or manifold 2 connected is.

2 shows the at the collector and / or manifold 2 arranged drying device 7 in a view. The dryer device 7 has a dryer tube 9 as a housing. The dryer tube 9 is made of two half shells 10 . 11 assembled and closed at its bottom sides fluid-tight. For this purpose, on the one base side, a closure lid 12 and on the other base a stopper 13 in the dryer tube 9 positioned. The stopper 13 has an axial opening in which a sealing plug 14 is screwed.

3 shows the at the collector and / or manifold 2 arranged drying device 7 in a sectional view. The collector and / or manifold 2 has numerous openings 15 for connection with the flow tubes, not shown here. The collector and / or manifold 2 is at its bases with closure lids 12 closed flow-tight. Furthermore, in the header and / or manifold 2 partitions 16 introduced for flow control. At the here illustrated embodiment is the collector and / or manifold 2 one piece. Each collector and / or manifold 2 may also be in several parts, for example, composed of two half shells according to alternative embodiments.

4 shows in an enlarged section of the dryer device 7 the bottom side of the dryer tube 9 into which the stopper 13 is introduced. The stopper 13 has a concentric, axially extending aperture in which a sealing plug 14 is arranged. Plug 13 and sealing plugs 14 have a thread, so that the stopper 14 detachable with the stopper 13 connected is. Between plugs 13 and sealing plugs 14 are elastic rings with a circular cross-section as a sealant 17 arranged. The sealing plug 14 has at its the interior of the dryer tube 9 facing side a shot 18 at the dryer device 6 in the dryer tube 9 is held. Together with the sealing plug 14 is the dryer device 6 interchangeable. The dryer device 6 consists of a bag open for the coolant and the moisture and a quantity of a drying granulate enclosed in the bag. The drying granules serve to collect the moisture contained in the coolant.

5 shows a sectional view of the dryer tube 9 , The dryer tube 9 consists of two half-shells 10 . 11 , In the dryer tube 9 is a carrier frame 19 with a sieve 20 arranged. The sieve 20 serves as a filter and retains particles in the coolant.

6 shows a view of one of the half-shells 10 . 11 , In the half shell 10 . 11 is an inflow and / or outflow nozzle 8th for the coolant integral with the half shell 10 . 11 educated. Furthermore, the location of the dryer in the tube 9 arranged support frame 19 with the strainer attached 20 to recognize. In addition, the dryer device 6 shown.

7 shows a sectional view of the dryer device 7 a second embodiment of a condenser 1 , This differs from the first in the 1 to 6 shown embodiment only by the position of the inflow and / or outflow 8th ,

The 8th and 9 show views from opposite sides of the support frame 19 with the strainer attached 20 , The sieve 20 is for connection to the carrier frame 19 caulked at this. The graining spots 21 of caulking are in 9 to recognize. Furthermore, the support frame 19 a tab 22 in the assembled state of the dryer device 7 in a recess of a half-shell 10 . 11 is positioned. A comparable recess 23 , but for a cap 12 , is in the 6 and 12 shown.

10 shows a sectional view of the dryer device 7 a third embodiment of a condenser 1 , This differs from the second, in the 7 to 9 shown embodiment only by the shape and position of the screen 20 , The sieve 20 is here as a stable body in one of the inflow and / or outflow 8th arranged.

11 shows a view of a half-shell 10 , In the half shell 10 is in one of the inflow and / or outflow nozzles 8th the sieve 20 arranged and with the half shell 10 preferably connected by soldering.

12 shows a view of the in the 10 and 11 illustrated sieves 20 ,

LIST OF REFERENCE NUMBERS

1

 condenser

2

 Collector and / or manifold

3

 network

4

 feed

5

 waste pipe

6

 drying device

7

 dryer device

8th

 Inflow and / or outlet connection

9

 dryer tube

10

 half shell

11

 half shell

12

 cap

13

 Plug

14

 sealing plug

15

 openings

16

 Divider

17

 sealant

18

 admission

19

 support frame

20

 scree

21

 grit point

22

 flap

23

 recess

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 10353939 A1 [0005]
• EP 1978316 A1 [0006]
• DE 10338526 A1 [0007]
• DE 102004059799 A1 [0008]

Claims (10)

Drying device ( 7 ) with a drying device ( 6 ) for a refrigerating machine, in particular a motor vehicle, comprising a housing in which the drying device ( 6 ) is positioned to receive the moisture contained in a coolant of the chiller and the at least one inflow and / or outflow nozzle ( 8th ) for the coolant, characterized in that the housing is a dryer tube ( 9 ), which consists of two half-shells, preferably made of a metal ( 10 . 11 ) is composed. Drying device ( 7 ) according to claim 1, characterized in that at least one or all inflow and / or outflow nozzles ( 8th ) for the coolant on one of the half shells ( 10 . 11 ) are formed. Drying device ( 7 ) according to claims 1 or 2, characterized in that on a first base side of the dryer tube ( 9 ) a closure lid ( 12 ) in the dryer tube ( 9 ) is introduced and / or on one of the first base side opposite second base side of the dryer tube ( 9 ) a plug ( 13 ) is arranged with an axial and / or concentric opening. Drying device ( 7 ) according to at least one of the preceding claims, characterized in that in the opening of the plug ( 13 ) a sealing plug ( 14 ), which has a receptacle ( 18 ) for holding the dryer device ( 6 ) in the dryer tube ( 9 ) having. Drying device ( 7 ) according to at least one of the preceding claims, characterized in that in the dryer tube ( 9 ) a support frame ( 19 ) with a sieve ( 20 ) and / or in at least one inflow and / or outflow nozzle ( 8th ) a sieve ( 20 ) is arranged. Condenser ( 1 ) for a refrigerating machine, in particular a motor vehicle, in which a flowable refrigerant circulates, wherein the liquefier ( 1 ) at least one collector and / or distributor tube ( 2 ) and a plurality of flow tubes for the flowable refrigerant and at least one drying device ( 6 ) for receiving the moisture contained in the refrigerant, characterized in that - the condenser ( 1 ) a dryer device ( 7 ) according to at least one feature of claims 1 to 5, and - a collector and / or distributor tube ( 2 ) of the liquefier ( 1 ) is made in one piece and / or - a header and / or manifold ( 2 ), at least one half-shell of a collector and / or distributor tube ( 2 ), cohesively with a half-shell ( 10 . 11 ) the dryer device ( 7 ) connected is. Process for producing a condenser ( 1 ) for a refrigerating machine, in particular a motor vehicle, in which the liquefier ( 1 ) is joined from a subset of its individual components and connected in a soldering furnace, wherein after soldering the condenser ( 1 ) a dryer device ( 6 ) in an at least one side open dryer tube ( 9 ) of the liquefier ( 1 ) and then the at least one open end of the dryer tube ( 9 ) is closed, characterized in that before soldering - at least one half-shell ( 10 . 11 ) of the bivalve dryer tube ( 9 ) with a collector and / or distributor tube ( 2 ) or at least one half-shell ( 10 . 11 ) of the bivalve dryer tube ( 9 ) with a half-shell of a collector and / or distributor tube ( 2 ) is added and / or - the collector and / or manifold ( 2 ) with condenser flow tubes ( 1 ) and / or - at least one sieve ( 20 ) and / or a closure lid ( 12 ) and / or a plug ( 13 ) with one of the half-shells ( 10 . 11 ) and / or - the two half shells ( 10 . 11 ) of the dryer tube ( 9 ) and / or - the two half shells of the collector and / or distributor tube ( 2 ). Process for producing a condenser ( 1 ) according to claim 7, characterized in that after soldering a closure lid ( 12 ) and / or a plug ( 13 ) in the dryer tube ( 9 ) and / or in the collector and / or distributor tube ( 2 ) is mounted. Process for producing a condenser ( 1 ) according to one of claims 7 and 8, characterized in that the half shells ( 10 . 11 ) are produced in a stamping-bending process. Process for producing a condenser ( 1 ) according to at least one of claims 7 to 9, characterized in that the at least one sieve ( 20 ) with one of the half-shells ( 10 . 11 ) or with one in the dryer tube ( 9 ) positionable support frame ( 19 ) is caulked and / or soldered.

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