DE102004037688A1 - Heat exchanger for use in road vehicle has collection or distribution manifold with two molded parts fitted together to form two flow channels side-by-side with openings for ends of heat exchanger tubes - Google Patents

Abstract

The heat exchanger may have liquid distribution or collection manifolds (1) on either side. A first modified M-shaped molded part (2) may fit onto a second modified W-shaped part (3). The center portions of each part may come into contact, separating two adjacent flow channels (5,6). The edges of the M-shape bear against the inside surfaces of the sides of the W-shape. Clips (4) on the edges of the W-shape may be bent over to hold the M-shape in place.

Description

The The present invention relates to an apparatus for replacement of heat, especially for Motor vehicles. Such devices for exchanging heat, for example for air conditioners of motor vehicles are known from the prior art.

These Devices in the prior art have a variety of flat tube-like Flow devices for a refrigerant on, at the ends collecting and / or distribution facilities arranged are. It is known that the variety of flow devices arranged substantially in two mutually parallel planes are. For this purpose, the collection and distribution facilities two separate flow paths on. These flow paths are over in the prior art flow connections between the two flow paths produced. There is the problem that this on the one hand in the production is relatively expensive and on the other hand, from the state the art known devices for exchanging heat the partially required high pressures are not up to it.

The Object of the present invention is therefore to be compared to the Prior art in the production of cheaper device for replacement of heat to accomplish. This is inventively by the subject matter of the claim 1 reached. Advantageous embodiments and further developments are the subject of the dependent claims.

The inventive device to exchange heat has at least one flow device, preferably a plurality from flow devices and at least one collection and / or Distribution device on. In this case, the collection and / or distribution device at least two moldings and optionally also advantageous at least one or two boundary elements. The moldings form at least two flow paths for a Fluid.

Favorable Way has the collection and / or distribution device in one embodiment at least in a section on a transition region, at least two flow paths the collection and / or Distribution device at least partially interconnects. there touch the shaped parts in at least three sections surface.

Under a molded part is understood to mean a modular unit which has a predetermined shape.

Under A limiting element is used in the context of the present invention understood an element or a device which to the Ab- or Limitation of another device, such as a Collecting and / or Distribution device, serves.

Under Connecting to one another is understood to mean a connection in the manner that by this connection a liquid and / or gaseous fluid, such as for example, a refrigerant, stream can. Under a plane Touch is understood that a touch not only occasionally occurs in individual areas, but in a continuous area, for example along a line, which has a finite width.

In a preferred embodiment are the moldings made of a material which consists of a Selected group of materials which is aluminum, aluminum alloys, iron, iron alloys, Bronze, copper, copper alloys and the like.

In a further preferred embodiment the moldings are substantially mirror-symmetrical at least along a longitudinal axis. This means that in geometric terms, the moldings to a Plane containing the longitudinal axis substantially are mirror-symmetrical. It is a level that essentially perpendicular to one through the two flow paths spanned level lies. Below essentially mirror-symmetrical It is understood that when considering the symmetry smaller irregularities or protrusions and recesses unconsidered stay.

In a further preferred embodiment are the touching ones Sections of each other spatially spaced. In a further preferred embodiment, at least a molding edge-side projections at least partially a second molded part in at least fix a predetermined position. In this case, preferably, the second Form part have recesses into which engage the projections. The projections serve here to the two moldings opposite fix each other in order to then in such a step pre-fixed position final to fix.

In a further preferred embodiment, the collecting and / or distribution device has at least one inner and one outer molded part. This is to be understood that in the assembly or in the prefixing a Molded part engages at least in a portion of its outer walls in at least a portion of the inner walls of the second mold part and comes into contact therewith. This will be explained below in connection with the figures.

In a further preferred embodiment can the individual moldings also have holes, which also serve for prefixing. In this case, the bores are preferably such arranged that, for example, a substantially elongated Object can be passed through both holes and on this Way the moldings opposite be fixed each other.

In a further preferred embodiment shut down the limiting elements gas and / or at least one flow path of the manifold liquid-tight from. This means, that on the limiting element substantially no liquid and / or a gas flowed past can.

In a further preferred embodiment the moldings have recesses for the at least partially Recording of flat tubes, which a predetermined angle in Reference to the Hauptausdehnungsrichtung the headers. It can the recesses have any geometric cross section, For example, rectangular, elliptical, generally polygonal or Mixed forms from this. In addition, you can the recesses additional Formations have, for example, as an insertion bevel for the flat tubes serve. The specified angle of the individual flow devices or flat tubes is between 0 ° and 90 °, preferably between 0 ° and 30 ° and more preferably between 0 ° and 10 °.

In a further preferred embodiment have the transition areas, which the flow paths at least partially connect the manifold together, any geometric cross sections, which consist of a group of cross sections selected are polygonal, circular or elliptically are or have mixed forms of these cross sections.

In a further preferred embodiment the molded parts have at least three connection areas, within which at least two moldings force, form and / or fluidly connected are. These are preferably those sections in which the shaped parts are flat touch.

In a further preferred embodiment have the flow paths the manifolds in cross-section on a shape which substantially circular, drop-shaped, polygonal, elliptical, hybrids thereof or the like.

In a further preferred embodiment is the connection area of the molded parts between the flow paths at least partially thermally decoupled.

In a further preferred embodiment is in the area of transition areas the connection area of the molded parts between the flow paths interrupted.

In a further preferred embodiment have the mold parts in cross-section of a substantially W or ω-shaped configuration on.

there are preferably the edges located within a flow path at least partially rounded.

In a further preferred embodiment is the transition area at least in a section at a given angle with respect to the longitudinal axis twisted the collection or distribution device. This angle is between 0 ° and 90 °, preferably between 15 ° and 75 °, more preferred between 30 ° and 60 ° and especially at about 45 °. This means that the flow direction of the refrigerant in this section opposite the longitudinal axis runs at the predetermined angle.

In a further preferred embodiment have the moldings at least in the area of receiving the limiting elements Recesses, in which the limiting elements at least partially intervention. Preferred may Limiting elements inserted substantially in these recesses become.

In a further preferred embodiment extends a variety of flow devices between two collection and / or distribution facilities. It is preferred the plurality of flow devices at least two to each other arranged in substantially parallel planes. It is, however, also in the scope of the invention, the plurality of flow devices to arrange in more than two planes substantially parallel to each other.

In a further preferred embodiment, a multiplicity of flat tubes are arranged on at least one collecting and / or distributing device, and at least two flow paths of the collecting and / or distributing device are hydraulically connected to one another by the plurality of throughflow devices or flat tubes. For this purpose, the flow-through devices have at least one curved or curved Ab cut up. In this embodiment, only a total of two collection and / or distribution facilities are preferably provided.

Within of the preferred embodiment the thermal decoupling of the flow paths through at least a section-wise recess in the connection region of the moldings between the flow paths causes. However, this recess can also along in essentially the entire length extend the collection and / or distribution device.

In a further preferred embodiment are the surfaces the mold and / or components of the device coated with solder.

The The invention is further directed to a method of making a device to exchange heat, especially for Motor vehicles directed, which at least one flow device or a flat tube and at least one collecting and / or distribution device having.

there become in a first step, the moldings to a collecting and / or distribution device composed and then fixed. Thereafter, the remaining components in further steps assembled and fixed. Finally, the shape and / or Components cohesively with each other connected.

Prefers is the fixation of the moldings by forming the projections at least causes a molding.

The The invention further relates to a device for air conditioning in a vehicle interior of a motor vehicle directed air directed, which at least one compressor, an evaporator, an expansion valve and a radiator wherein at least one evaporator and / or cooler a device of the type described above.

Further Advantages and embodiments The present invention will become apparent from the accompanying drawings. Show:

1 a partial view of a device according to the invention for the exchange of heat in a first embodiment;

2 a cross section of a collection and / or distribution device according to the invention;

3 a molding for a device according to the invention for the exchange of heat;

4 a plan view of the molding for a device according to the invention for the exchange of heat 3 ;

5 a representation along the line AA in 4 ;

6 a representation of another molded part for a device according to the invention for the exchange of heat;

7 a representation along the line AA in 6 ;

8th a partial view of the device according to the invention for the exchange of heat;

9 a further illustration of the device according to the invention for the exchange of heat;

10 an inventive device for exchanging heat in a further embodiment;

11 a partial view of a molded part in a further embodiment;

12 another partial view of the molding 11 ;

13 a view along the lines AA in 12 ;

14 a view along the lines BB in 12 ;

15 a collection and / or distribution device for a device according to the invention for the exchange of heat in disassembled state;

16 a collection and / or distribution device in a further embodiment of an inventive device for exchanging heat.

In 1 the reference number refers 1 to a collecting and / or distribution device for a device according to the invention for the exchange of heat.

This has a first molded part 2 , in this case a floor, and a second molding 3 , a lid on. The following is the first molded part 2 as a floor and the second molding 3 referred to as a lid.

The reference number 4 refers to am cover 3 attached tabs, which serve the Vorfixierung with the ground. In the present embodiment, the floor is inside and the lid is outboard. However, it could also be vice versa, the floor outside and the lid inside. Also, the tabs could be located instead of the lid on the floor, or a portion of the tabs on the lid and another part of the floor.

In the ground 3 are recordings or recording devices 7 for receiving flow devices or flat tubes 8th intended. These receiving devices may have any shape, preferably adapted to the geometry of the throughflow devices. The rotation of the end sections 9 the flow-through devices 8th serves as a pipe stop. However, this is not necessary. reference numeral 13 refers to a cutout or recess in the ground 2 and / or in the lid 3 , which serves the thermal separation. The reference number 11 denotes an overflow passage or a connection between the left and right flow paths in FIG 1 , Partitions are used to close the collection and / or distribution facilities 10 ,

2 shows a cross section of the collecting and / or distribution device 1 , In this case, the reference numerals relate 5 and 6 to the two flow channels of the collecting and / or distribution device, which have a predetermined hydraulic diameter. The floor 2 and the lid 3 In the representation shown here, they are flat in three areas, namely in the middle along the vertical drawn line and in the respectively right and left edge in FIG 2 , The reference number 4 indicates a projection or a tab, which serves to pre-fix the bottom against the lid.

3 shows a floor 2 for a device according to the invention for the exchange of heat. In particular, the punching is 13 for thermal separation as well as the transition area 11 shown. The punching is not provided along the entire length of the floor, only in the area between one end of the floor and the connection 11 , Especially in this area, the thermal separation is of particular importance, since in the area after the supply of the refrigerant, the temperature of the refrigerant changes very rapidly and rapidly during the flow.

4 shows a plan view of the lid 2 out 3 to illustrate the geometry. In the present embodiment, the transition region is arranged at an angle of 45 ° relative to the longitudinal direction of the lid and thus the collecting and / or distribution device.

The Recording devices for the flow devices have here an elongated shape, and the longitudinal direction is substantially parallel to the longitudinal direction of the soil.

5 shows a representation along the line AA in 3 , In particular, the transition region is 11 shown. The transition area 11 is due to a corresponding shape of the soil 14 educated. The reference number 7 refers to the receiving devices for the flow-through devices.

6 shows a lid device 3 for a device according to the invention for the exchange of heat. The reference number 4 denotes projections or tabs, which for prefixing with the bottom device 2 serve. The reference number 12 denotes two partitions which are arranged in the two flow paths and serve to prevent the flow of the refrigerant along the longitudinal direction of the collecting and / or distribution device. Other partitions 10 are arranged at the end of the collection and / or distribution device.

7 shows a view 6 along the lines AA. Also the lid 3 has in the region of the transition region a recess or formations 15 on.

8th shows a device according to the invention for exchanging heat to illustrate the flow paths for the refrigerant. The refrigerant enters via a (not shown) in the supply 16 marked area of the collecting and / or distribution device 1 , In this area, the refrigerant between the lower end of the collecting and / or distribution device and the partition 12 to distribute. The refrigerant passes through the flow devices 8th between which prefers cooling fins 38 are arranged, in the lower collecting and / or distribution device 1a or the area 17a the same. There it can be along the entire length of the lower collection and / or distribution device or the right flow path or area shown in the figure 17a to distribute.

The refrigerant now flows through the flow devices 8th in the area 18 the above collecting and / or distribution device 1 , From there, the refrigerant reaches the transition area 11 in the section 19 the collection and / or distribution facility 1 , This section extends substantially between the left in the figure partition 12 and the lower end of the collection and / or distribution device 1 , From there the fluid through the flow devices 8th in the area shown on the left in the figure 17b the collection and distribution facility 1 , Here it can again be distributed along the entire longitudinal direction of the flow path, that is to say the collection and distribution device. Finally, the refrigerant passes through the flow devices 8th in section 20 and finally flows out of the heat exchange device via a drain (not shown).

In 9 is another way for the guidance of the medium, that is the refrigerant, shown within the device for exchanging heat. In this case, the device is first completely in the lower region, that is, all flow devices in both planes below the separations 12 are flowed through by the refrigerant. Finally, the refrigerant is released via the connection 11 guided in the upper region of the device and then passes through again the complete device in this upper area.

For this purpose also the in 9 shown collecting and / or distribution device 1' (not shown) partitions.

10 shows the inventive device for exchanging heat in a further preferred embodiment.

In this embodiment, the device has only one collecting and / or distribution device 1 with two flow paths. The flow devices 8th have a curved area 8a on. Here, the refrigerant flows from the flow path shown on the right side in the figure into the left-side flow path. This device has (not shown) partitions, which are connected to the reference numerals 33 and 34 located points. Next to it is a transition area 11 provided, which connects the two flow paths together. The course of the refrigerant in the in 10 shown device corresponds to that in 9 ,

In 11 is a further plan view of the collection and / or distribution device shown. In this embodiment, the receiving devices are not parallel to the longitudinal direction of the collecting and / or distributing device 1 but arranged opposite the longitudinal direction at a predetermined angle. The reference number 13 indicates the recess used for thermal separation of the two area 5 and 6 the collection and / or distribution facility 1 serves. The lid has projections 4 on, which serve to prefix the lid device relative to the ground.

In 12 a detail of a device according to the invention for the exchange of heat is shown. Here are the recording devices 7 again substantially parallel to the longitudinal direction of the collecting and / or distribution device 1 ,

In 13 is the representation along the lines AA 12 shown. One recognizes that the recess 7 opposite the ground 2 is lowered.

14 shows a section of the collection and / or distribution device 12 along the line BB. In this case, the essentially W- or Ω-shaped shape of the floor comes into its own.

15 shows the collection and / or distribution device 1a for example 8th Here, the lid and the bottom WUR separated from each other to allow an inside view. There are several insertion devices 44 provided, in which partitions 12 can be inserted. The reference numerals 10 refer to a termination device that terminates the apparatus for exchanging heat down and up.

16 shows a representation of an embodiment of a device according to the invention for the exchange of heat with a view into the interior. In this case, the reference numerals 21 . 22 . 23 and 24 the different flow areas of the flow device. The partitions 12 Divide the areas 23 and 24 respectively. 21 and 23 , The reference number 25 indicates a projection leading to the formation of the transition region 11 serves, along which a guide of the refrigerant between the areas 21 and 22 is possible. The device may have one or a plurality of such transition regions. The device works 25 and the device 25 ' together to effect the actual guidance of the refrigerant. This connection can, as already stated above, have an arbitrary cross section or an arbitrary angle to the flow channels or the regions 21 . 22 . 23 and 24 exhibit. In a further preferred embodiment, however, also such Versprungsteile either only on the lid or only on the ground 25 . 25 be arranged for the flow connection. Further, it is also possible to produce the flow connection in such a way that two mutually parallel partitions are inserted with openings in the collecting and / or distribution device.

In a preferred embodiment are the lid and the bottom of a plane which is perpendicular through all contact surfaces runs, with respect to each other arranged mirror-symmetrically.

Further it is also possible the refrigerant otherwise through the heat exchange device, the is called, several transition areas to provide or even several consecutively arranged flow paths. So could the flow devices also in more than two parallel Layers can be arranged. The flow for exchanging heat can both from top to bottom as well as from bottom to top.

The feed and the derivative for the refrigerant can either both at a collection and / or distribution facility be arranged or in different collection and / or distribution facilities.

The 17 to 19 show further embodiments, wherein in 17 a collection and distribution device 100 , such as manifold, is shown in section. Here is the collection and distribution device 100 from two moldings 101 and 102 assembled, wherein the two mold parts lie flat against each other on at least three surfaces and mating surfaces. Between the two moldings 101 . 102 are two channels 103 . 104 educated. In the moldings 101 and or 102 are partitions in slots 110 inserted to direct or prevent fluid flow within the collecting and distributing device. This encompasses a molding 101 the other molding 102 at least partially by means of its end portions or arranged on this or molded tabs 105 . 106 ,

In the molding 101 Slots are further introduced, in which pipe ends are used to be in fluid communication with the interior of the collecting and distributing device. In these slots or openings are the end of the tubes 120 used, with the ends are twisted so that they are inserted vertically into the slots.

The 18 shows an embodiment of the 17 in a view without the lid 102 , The pipe ends 121 are placed in the vertically aligned slots. The passage from one channel 130 in the other channel 131 takes place through a substantially transverse channel 140 , Wherein each perpendicular channels through two partitions 141 . 142 be blocked.

The 18 shows a view of a corresponding manifold, wherein the channel as a flow area 140a are formed by a bulge in at least one of the two mold parts of the collecting and distributing device, wherein the bulge either in the lid 102 , in the ground 101 or can be provided in both moldings. and further two reinforced partitions 141 . 142a are provided for blocking the vertical channels.

Claims (25)

Device for exchanging heat, in particular for motor vehicles with at least one flow-through device ( 7 ) and at least one collecting and / or distributing device ( 1 ), the collection and / or distribution device ( 1 ) at least two moldings ( 2 . 3 ) and the moldings at least two flow paths ( 5 . 6 ) form a fluid, characterized in that the molded parts ( 2 . 3 ) in at least three sections surface contact. Device for exchanging heat, in particular for motor vehicles with at least one flow-through device ( 7 ) and at least one collecting and / or distributing device ( 1 ), the collection and / or distribution device ( 1 ) at least two moldings ( 2 . 3 ) and optionally at least one or two limiting elements and the molded parts at least two flow paths ( 5 . 6 ) for a fluid, characterized in that the collecting and / or distributing device has at least in one section a transition region ( 12 ), which the flow paths ( 5 . 6 ) of the collecting and / or distribution device at least partially interconnects, and the molded parts ( 2 . 3 ) in at least three sections surface contact. Device according to claim 1 or 2, characterized in that at least the molded parts ( 2 . 3 ) are made of a material selected from a group of materials including aluminum, aluminum alloys, iron, iron alloys, bronze, copper, copper alloys and the like. Device according to at least one of the preceding claims, characterized in that the molded parts ( 2 . 3 ) are substantially mirror-symmetrical at least along a longitudinal axis. Device according to at least one of the preceding claims, characterized in that the contacting portions spaced from each other spatially are. Device according to at least one of the preceding claims, characterized in that at least one molded part ( 3 ) edge projections ( 4 ), which at least partially a second molded part ( 2 ) in at least one predetermined position. Device according to at least one of the preceding claims, characterized in that the collecting and / or distribution device at least an inner and an outer molding having. Device according to at least one of the preceding claims, characterized in that the limiting elements ( 10 ) Close at least one flow path of the collecting and / or distribution device gas and / or liquid-tight. Device according to at least one of the preceding claims, characterized in that the molded parts ( 2 . 3 ) Aufnahmeein directions ( 7 ) for the at least partially receiving flat tubes ( 8th ) having a predetermined angle with respect to the main extension direction of the headers. Device according to at least one of the preceding claims, characterized in that the molded parts ( 2 . 3 ) have at least three connecting portions, within which at least two molded parts are positively, positively and / or materially connected. Device according to at least one of the preceding claims, characterized in that the flow paths of the collecting and / or distribution device have a shape in cross section, which is substantially circular, teardrop-shaped, polygonal, elliptical, Mixed forms and / or the like. Device according to at least one of the preceding claims, characterized in that the connecting region of the molded parts between the flow paths at least partially thermally decoupled. Device according to at least one of the preceding claims, characterized in that in the region of the transition regions ( 11 ) the connecting region of at least one molded part between the flow paths is interrupted. Device according to at least one of the preceding claims, characterized in that the molded parts ( 2 . 3 ) in cross section have a substantially W-shaped or ω-shaped configuration. Device according to at least one of the preceding claims, characterized in that at least those within a flow path ( 5 . 6 ) located edges are rounded. Device according to at least one of the preceding claims, characterized in that the transition region ( 11 ) is arranged rotated with respect to its longitudinal axis by a predetermined angle with respect to the longitudinal axis of the collecting tube, which is between 0 ° and 90 °, preferably between 15 ° and 75 °, more preferably between 30 ° and 60 ° and in particular at about 45 ° is. Device according to at least one of the preceding claims, characterized in that the molded parts ( 2 . 3 ) have recesses at least in the region of the receiving of the limiting elements, in which engage the limiting elements at least partially. Device according to at least one of the preceding claims, characterized in that a plurality of flat tubes ( 8th ) between two collection and / or distribution devices, each with two flow paths ( 5 . 6 ). Device according to at least one of the preceding claims, characterized in that a plurality of flat tubes ( 8th ) are arranged on a manifold and hydraulically connect at least two flow paths of the manifold. Device according to at least one of the preceding claims, characterized in that the thermal decoupling of the flow paths through at least one section-wise recess ( 13 ) in the connection region of the molded parts ( 2 . 3 ) between the flow paths ( 5 . 6 ) is effected. Device according to at least one of the preceding claims, characterized in that the surfaces of the molds and components the device are coated with solder. Method for producing a device for exchanging heat, in particular for motor vehicles, having at least one flat tube and at least one collecting tube, comprising the steps of - assembling the molded parts ( 2 . 3 ) to a manifold ( 1 ) - Fixing of the moldings - Composition of the other components and their fixation - Connect, in particular cohesive connection of the mold and components. A method according to claim 22, characterized in that the fixing of the molded parts by forming the projections ( 4 ) is effected at least one molding. Device for conditioning in one Vehicle interior of a motor vehicle guided air, with at least one compressor, an evaporator, an expansion valve and a radiator, wherein at least one evaporator and / or radiator is a device according to at least one of claims 1 to 1. Device according to claim 24, characterized in that the existence casing a ventilation, heating or air conditioning the radiator and possibly other elements, such as air flow paths or air flow control elements.