DE102018007010A1 - Fluid flow channel with efficiency-increasing transformations - Google Patents

Abstract

The invention relates to a fluid flow channel in a heat exchanger (280, 360, 395, 400) or in a cooling / heating element (430) for a heat-absorbing or heat-emitting first working fluid (310), comprising: a first channel wall (110) and a second channel wall ( 120), which are arranged opposite one another and via which the first working fluid (310) flowing in the fluid flow channel (100) with at least one further working fluid of the heat exchanger (280, 360, 395, 400) or with at least one further component or with the surroundings of the cooling - / heating element (430) is in heat exchange, first deformations (130) extending into the fluid flow channel (100), each formed with the opposite channel wall (110, 120) or in the opposite channel wall (110, 120), in the fluid flow channel (100 ) extending first formings (130) are integrally or positively connected and i n second deformations (140) extending into the fluid flow channel (100), each at a predetermined spacing (160) from the opposite channel wall (110, 120) or from those formed in the opposite channel wall (110, 120), into the fluid flow channel (100) extending second formations (140) are spaced.

Description

The present invention relates to a fluid flow channel in a heat exchanger or in a cooling / heating element for a heat-absorbing or heat-emitting first working fluid. Furthermore, the invention relates to a heat exchanger or a heating / cooling element with such a fluid flow channel.

From the US 2017 184347A a heat exchanger is known, the flow channels of which are alternately equipped with a flow insert or with deformations in the stacking direction. The fluid flow channel having the deformations is stabilized by means of the deformations in that the deformations are soldered either to the opposite channel wall or to deformations which are formed in the opposite channel wall. Such designed heat exchangers are currently a common design for oil coolers, for example. Such a design can have a low performance, since in the fluid flow channels having the deformations, due to the soldered deformations only, too little turbulence is formed, which reduces the heat exchange between the working fluids flowing in the flow channels.

The present invention concerns u. a. with the problem of specifying an improved or at least an alternative embodiment for a fluid flow channel and a heat exchanger equipped with such a fluid flow channel, which is characterized in particular by an improved efficiency of heat exchange between the working fluids.

• eine erste Kanalwandung und eine zweite Kanalwandung, die gegenüberliegend zueinander angeordnet sind oder über die das in dem Fluidströmungskanal strömende erste Arbeitsfluid mit zumindest einem weiteren Arbeitsfluid des Wärmeübertragers oder mit zumindest einem weiteren Bauteil respektive mit der Umgebung des Kühl-/Heizelements in Wärmeaustausch steht,
• sich in den Fluidströmungskanal hineinstreckende erste Umformungen, die jeweils mit der gegenüberliegenden Kanalwandung oder in der gegenüberliegenden Kanalwandung ausgebildeten, sich in den Fluidströmungskanal hinein erstreckenden ersten Umformungen stoffschlüssig oder formschlüssig verbunden sind und
• sich in den Fluidströmungskanal hinein erstreckende zweite Umformungen, die jeweils unter einer vorbestimmten Beabstandung von der gegenüberliegenden Kanalwandung oder von den in der gegenüberliegenden Kanalwandung ausgebildeten, sich in den Fluidströmungskanal hinein erstreckenden zweiten Umformungen beabstandet sind,
• wobei die ersten Umformungen und die zweiten Umformungen derart zueinander angeordnet sind, dass sie zumindest ein wiederholt aufzufindendes Basismuster ausbilden, bei dem jeweils eine erste Umformung von zumindest einer zweiten Umformung umgeben ist.

In one aspect of the invention, a fluid flow channel in a heat exchanger or in a cooling / heating element for a heat-absorbing or heat-emitting first working fluid is proposed, comprising:

• a first duct wall and a second duct wall which are arranged opposite one another or via which the first working fluid flowing in the fluid flow duct is in heat exchange with at least one further working fluid of the heat exchanger or with at least one further component or with the surroundings of the cooling / heating element,
• first deformations extending into the fluid flow channel, each of which is connected to the opposite channel wall or formed in the opposite channel wall and extending into the fluid flow channel in a cohesive or positive manner, and
• second formations extending into the fluid flow channel, each of which is spaced a predetermined distance apart from the opposite channel wall or from the second formations formed in the opposite channel wall and extending into the fluid flow channel,
• wherein the first reshaping and the second reshaping are arranged with respect to one another in such a way that they form at least one basic pattern that can be found repeatedly, in each of which a first reshaping is surrounded by at least one second reshaping.

Due to the second deformations, which do not extend over the entire height of the fluid flow channel, the turbulence or the flow behavior, in particular the flow velocity, of the first working fluid flowing in the fluid flow channel can be influenced in such a positive manner that the performance or performance of a heat exchanger or a cooling / heating element having such a fluid flow channel is improved. As a result, the efficiency of the heat exchange between the first working fluid and the second working fluid or between the first working fluid and the further component or the environment is increased, and this only by deformations in the channel walls that do not extend completely over the channel height.

Advantageously, an increase in performance can only be achieved with means that are formed in the channel walls of the fluid flow channel itself. Accordingly, a fluid flow channel which is stabilized by means of soldered first deformations can additionally be provided with second deformations which increase the efficiency of the heat transfer. Of course, a flow insert could also be used to increase performance, but then the entire concept and design of the fluid flow channel would also have to be completely changed with regard to the first transformations. In addition, the use of a flow insert is technically more complex, the complexity is increased by the increased number of components used, and the manufacturing costs and weight are generally increased when using a flow insert. In contrast, performance increases can be achieved as required by means of the second reshaping formed in the channel walls without the design or the production process of the heat exchanger or of the cooling / heating element having to be fundamentally changed.

In addition, the rigidity of the fluid flow channel is increased by the additional introduction of the second deformations in the channel walls advantageously increased, so that overall the stability of the heat exchanger or the cooling / heating element can be increased, for example, in the event of load changes.

When designing the fluid flow channel, the pressure loss in the fluid flow channel associated with the second deformations must also be taken into account. If flow inserts are used in the flow channels adjacent to the fluid flow channels having the second deformations, the second deformations must also be taken into account when soldering the flow inserts to the channel walls, since the flow inserts in the area of the second deformations may not solder to the channel wall. This can weaken the stability of the adjacent flow channels. If the second deformations are not too deep, this influence can be neglected.

The fluid flow channel is to be understood as a channel in a heat exchanger or in a cooling / heating element through which a first working fluid flows. The fluid flow channel is delimited by the first channel wall and the second channel wall downwards and upwards. The fluid flow channel is laterally limited either by the outer limits of the heat exchanger or the cooling / heating element or by channel limits arranged inside the heat exchanger or the cooling / heating element, as is the case, for example, with a U-turn flow guide or with a meandering flow guide . Such channel limitations are not among the first transformations in the sense of the present patent application. Center webs, which may be arranged in a flat tube and are soldered to the opposite duct wall, are also to be understood as duct boundaries and not as first reshapings in the sense of the present patent application.

The first working fluid flows in the flow direction in the fluid flow channel, the flow direction being understood to mean the macroscopic flow direction, which is established essentially due to the channel boundaries and the channel walls and leads from an inlet into the fluid flow channel to an outlet from the fluid flow channel. The transverse direction arranged perpendicular to this flow direction essentially defines the channel width of the flow channel, while the height of the flow channel is limited by the first channel wall and the second channel wall. In this respect, the macroscopic flow direction can also be used to differentiate between the first deformations and channel boundaries, since only one macroscopic flow direction, hereinafter referred to simply as the flow direction, is to be defined for each fluid flow channel.

In this case, one understands deformations formed in the respective channel wall, which extend into the fluid flow channel. Such reshaping can be more or less punctiform as dimples or can also be elongated shapes. If the deformations are coherent, this is only to be understood as one deformation at a time. The term forming, however, is not to be understood as those embossing or forming that form a channel boundary. Domes or deformations which are formed in the area of the connections also do not belong to the first or the second deformations in the sense of the present patent application.

The first deformations can be integrally or positively connected to the opposite channel wall or to first deformations formed in the opposite channel wall. A cohesive connection can be produced by soldering, welding, gluing or the like. A positive connection can be achieved by jamming, tensioning or the like.

A basic pattern is to be understood as the pattern that results from the fact that a circle is drawn around an arbitrary first deformation, which is chosen so large that at least one further first deformation is touched without a further first deformation being found in the circle is. All of the second reshapings arranged at least in sections in a circle are added to the basic pattern or thus together with the first reshaping of this basic pattern. This basic pattern determined in this way must then be found repeatedly in the fluid flow channel.

In the narrower sense, the basic pattern can also be determined in that a circle is drawn around a first deformation, which extends to a maximum of a further first deformation, without a further first deformation not being found in sections in the circle. All second reshapings, which are arranged in sections or completely in this circle, belong in sections or completely to the basic pattern. As a result, the basic pattern is constructed by the sections of the second transformation and by the first transformation, which are located in a circle. In this narrower definition of the basic pattern, such a basic pattern must be found repeatedly in the flow channel.

Furthermore, the first channel wall and / or the second channel wall can be planar.

Due to the planar design of the channel walls, a fluid flow channel with a substantially constant height can advantageously be formed, so that the fluid flow channel can be flowed through essentially uniformly. As a consequence, this has the advantage that the heat transfer via the first channel wall and / or the second channel wall can take place in an equal manner or in the flow direction and in the transverse direction, so that the efficiency or the performance of the heat exchanger or the cooling / heating element is increased is. This also minimizes edge effects. The planar formation does not refer to the first formations and second formations introduced into the respective channel wall, but to the basic planar form of the channel wall without taking into account the unevenness caused by the first formings and second formings.

Furthermore, the predetermined spacing of the second formations from the opposite channel wall or from the second formations formed in the opposite channel wall and extending into the fluid flow channel can amount to 10% to 90% of a channel height of the fluid flow channel.

It is also conceivable that the predetermined spacing is 10% to 70%, in particular 15% to 60%, for example 20% to 55% or possibly 30% to 50% of the channel height of the fluid flow channel.

By narrowing the fluid flow channel in the area of the second formations and on account of the predetermined spacing designed accordingly, the flow rate in the area of the second formations can advantageously be increased, so that the heat exchange in the area of the second formations can be increased via the first channel wall and the second channel wall.

Channel height is understood to mean the passage height and consequently the extent of the channel perpendicular to the direction of flow and perpendicular to the transverse direction, without taking into account the first and second transformations. In the case of a substantially planar design, the channel height will consequently be designed to be constant in the flow direction and in the transverse direction.

Furthermore, the at least one basic pattern can be found more than twice in the fluid flow channel.

It is also conceivable that the basic pattern can be found in the fluid flow channel more than four times, in particular more than six times, for example more than eight times and possibly more than ten times.

The multiple arrangement of the basic pattern in the transverse direction and / or in the flow direction can advantageously form a uniform pattern on the first and second formations in the fluid flow channel, so that a uniform heat transfer in the flow direction and / or in the transverse direction is made possible via the first channel wall and the second channel wall .

However, it is also conceivable that the individual elements of the multiply occurring basic pattern are evenly spaced from one another in the transverse direction and / or in the flow direction. It is also conceivable that the individual elements of the basic pattern are arranged at different distances from one another in the transverse direction and / or in the flow direction. In this case, the distance from one element to the other element can be determined by means of the distance between the first deformations and this in the transverse direction and / or flow direction.

Furthermore, more than one basic pattern can be found within the fluid flow channel.

As a result, different flow patterns can advantageously be built up in the flow direction and in the transverse direction, which lead to the respective desired heat transfers via the first channel wall and the second channel wall. This results in a higher variance in the design of the heat exchanger or the cooling / heating element, so that, depending on the application, areas with greater heat transfer and areas with lower heat transfer can be formed.

The different basic patterns can differ in number, shape and the predetermined spacing of the second transformations with regard to the first transformations and / or second transformations. The basic patterns can also differ from one another in the distance between the second transformations and the first transformations.

Even in the case of a plurality of basic patterns, the distances between the different basic patterns from one another can be of uniform or different design, both in the transverse direction and in Flow direction, whereby the distances between the different basic patterns can be determined as described above.

Furthermore, it is conceivable that two to twelve second deformations are arranged within the at least one basic pattern.

It is also conceivable that two to eight second formations, in particular two to seven, possibly two to six and, for example, three to five second formations are arranged within the at least one basic pattern.

Due to the number of second transformations within a basic pattern around the first transformation, an increase in the flow velocity that is balanced both in the flow direction and in the transverse direction can advantageously be built up, so that, depending on the design of the first transformation, the flow speed around the first transformation in the desired manner can be influenced.

• eine Anordnung von ersten Umformungen in der ersten Kanalwandung, eine Anordnung von ersten Umformungen in der zweiten Kanalwandung, eine Anordnung von zweiten Umformungen in der ersten Kanalwandung, eine Anordnung von zweiten Umformungen in der zweiten Kanalwandung.

Furthermore, the deformations can be positioned according to at least one arrangement selected from the following group:

• an arrangement of first deformations in the first channel wall, an arrangement of first deformations in the second channel wall, an arrangement of second deformations in the first channel wall, an arrangement of second deformations in the second channel wall.

The different positioning of the first and second deformations with respect to the channel walls can advantageously build up a high variance in possibilities for designing the heat exchanger or the cooling / heating element. For example, it is conceivable that the first deformations are formed only in one channel wall and the second deformations only in the opposite channel wall. This can be done, for example, if the embossing or formation of first and second deformations in only one channel wall is technically very difficult or almost impossible. In this case, the deformations could be distributed over the channel walls in such a way that an easy implementation is technically possible and that the deformations arranged in only one channel wall do not adversely affect one another.

However, it is also conceivable to form the first formations in both duct walls and the second formations only in one duct wall, and it is also possible to form both first formations and second formations in both duct walls and this in both opposite duct walls or only in one.

Furthermore, the distance between the first deformations and the second deformations can be of the same size or of different sizes within a basic pattern.

Desired flow patterns can advantageously be generated as required. The distance between a first forming and a second forming is determined such that the smallest distance from the first forming to the second forming is used as the distance.

Furthermore, at least some second deformations can each be arranged in the middle between two first deformations.

As a result, a regular flow pattern can advantageously be generated and, in addition, the formation of second deformations arranged in the center, in particular in only one channel wall, is easier to implement in terms of process technology. The middle between two first reshapings can be determined in such a way that the smallest distance between two first reshapings is used as the distance and the center is determined therefrom.

Furthermore, two different forms of first deformations can be formed in the fluid flow channel.

This can be advantageous if you want to influence or control the flow in addition to the channel boundaries. In this case, elongated, sometimes even curved shapes from the first reshaping can be used. However, even with this formation of first formations, it is entirely desirable to form second formations around these first formations, so that the heat transfer or the efficiency can advantageously be increased. In this case, different first deformations can additionally be surrounded by second deformations and consequently form a basic pattern which must be present in the fluid flow channel at least one more time.

• eine runde Form, eine ovale Form, eine langstreckte Form, eine gerade Form, eine gekrümmte Form, eine wellenförmige Form, eine Zick-Zack-Form, eine Netzform von sich überschneidenden langgestreckten Formen.

Furthermore, the first shaping and / or the second shaping can have at least one shape selected from the following group:

• a round shape, an oval shape, an elongated shape, a straight shape, a curved shape, a wavy shape, a zigzag shape, a mesh shape of overlapping elongated shapes.

A high variance can advantageously be obtained by selecting the shape from the aforementioned group Flow patterns are generated tailored to the respective application, so that the heat transfer can be advantageously adapted.

In the case of elongated shapes, the extension of the shape in the flow direction can be aligned parallel or at a predetermined first angle transverse to the flow direction of the first working fluid in the fluid flow channel.

This orientation of the elongated shapes can also be varied both in the transverse direction and in the flow direction, so that the flow pattern can be influenced in the desired manner simply on the basis of a non-variable predetermined first angle transverse to the flow direction.

Furthermore, the predetermined first angle can be 10 ° to 80 °.

It is also conceivable that the predetermined first angle is 10 ° to 70 °, in particular 20 ° to 60 °, possibly 30 ° to 50 ° and for example 40 ° to 50 °.

Due to the adjustment of the angle, the microscopic flow direction of the first working fluid can advantageously be influenced to a greater or lesser extent, so that the flow pattern can thereby advantageously be adapted to the respective application.

Furthermore, in the case of an elongated shape, the extension of the elongated shape can be less than 70% of the channel width of the fluid flow channel.

However, it is also conceivable that the extension of the elongated shape is less than 60%, in particular less than 55%, possibly less than 50% and for example less than 30% of the channel width of the fluid flow channel.

By adapting the extension of elongated shapes, flow guide elements can advantageously be formed in the fluid flow channel, which deflect or at least influence at least a partial flow of the first working fluid flowing in the fluid flow channel in the desired manner.

The channel width of the fluid flow channel is understood to mean the extent of the fluid flow channel in the transverse direction.

In a further aspect of the invention, a heat exchanger with at least one fluid flow channel, as described above, is proposed, the first working fluid flowing in the fluid flow channel being in heat exchange with at least one further working fluid.

As a result, all the advantages described above can advantageously be integrated in a heat exchanger.

• in Schalenbauweise, in Flachrohrbauweise oder in Plattenbauweise.

Furthermore, the heat exchanger can be designed according to a design selected from the following group:

• in shell construction, in flat tube construction or in plate construction.

Accordingly, this generic concept of first reshaping and second reshaping in the fluid flow channel can advantageously be applied to different designs, so that a wide variety of designs can be obtained with relatively simple constructive and productive means.

Here, shell construction is understood to mean a construction in which several shells are connected to one another in a cohesive manner, so that flow channels are formed between the individual shells, through which working fluids can then flow.

A flat tube construction is to be understood as a construction in which a flow channel for working fluids is formed at least in the flat tubes. In addition, a flow channel for another working fluid can also be formed between the flat tubes.

The term plate construction is to be understood as a construction in which two plate halves always form a plate pair, a flow channel for a working fluid being formed in the plate pair or between the two plate halves. A further flow channel for a further working fluid can then be formed between the plate pairs.

• als Ölkühler in Schalenbauweise, wobei in zumindest einem Ölströmungskanal ein Strömungseinsatz angeordnet ist und in zumindest einem Kühlmittelkanal der Fluidströmungskanal ausgebildet sein kann,
• als Ölkühler in Plattenbauweise, wobei in einem zumindest Ölströmungskanal ein Strömungseinsatz angeordnet ist und in zumindest einem Kühlmittelkanal der Fluidströmungskanal ausgebildet sein kann,
• als Ladeluftkühler in Rohrbauweise, wobei in zumindest einem Luftströmungskanal ein Strömungseinsatz angeordnet ist und in zumindest einem Kühlmittelkanal der Fluidströmungskanal ausgebildet sein kann,
• als Ladeluftkühler in Plattenbauweise, wobei in zumindest einem Luftströmungskanal ein Strömungseinsatz angeordnet ist und in zumindest einem Kühlmittelkanal der Fluidströmungskanal ausgebildet sein kann,
• als Kühlmittelkühler in Rohrbauweise, wobei in zumindest einem Luftströmungskanal ein Strömungseinsatz angeordnet und in zumindest einem Kühlmittelkanal der Fluidströmungskanal ausgebildet sein kann.

Furthermore, the heat exchanger can be designed according to an application type selected from the following group:

• as a shell-type oil cooler, with one in at least one oil flow channel Flow insert is arranged and the fluid flow channel can be formed in at least one coolant channel,
• as a plate-type oil cooler, a flow insert being arranged in at least one oil flow channel and the fluid flow channel being able to be formed in at least one coolant channel,
• as a charge air cooler in tubular construction, a flow insert being arranged in at least one air flow channel and the fluid flow channel being able to be formed in at least one coolant channel,
• as a charge air cooler in plate construction, a flow insert being arranged in at least one air flow channel and the fluid flow channel being able to be formed in at least one coolant channel,
• as a coolant cooler in tubular construction, a flow insert being arranged in at least one air flow channel and the fluid flow channel being able to be formed in at least one coolant channel.

Accordingly, the previously described fluid flow channel can advantageously be used in a wide variety of designs and consequently also contribute to increasing performance or increasing efficiency in the most varied of applications.

In this context, the use of flow means a component which is introduced into the respective flow channel and is possibly soldered to the channel walls. Such flow inserts can be shaped as turbulators, air fins or similar structures.

An oil cooler is to be understood as a cooler which, as a working fluid, has oil which is brought into heat exchange with another working fluid via the oil cooler. A charge air cooler is to be understood as a cooler in which the charge air is brought over the charge air cooler as a working fluid in heat exchange with another working fluid. A coolant cooler is to be understood as a heat exchanger in which the coolant is brought into heat exchange as a working fluid with another working fluid.

In a further aspect of the invention, a heating / cooling element with at least one fluid flow channel, as described above, is proposed, the first working fluid flowing in the fluid flow channel being in heat exchange with at least one component or the environment.

As a result, the heat transfer from the surroundings or the further component brought into contact with the heating / cooling element can advantageously be increased in the desired manner, so that cooling or heating of the surroundings or the component can be designed more efficiently.

• in Flachrohrbauweise oder in Plattenbauweise.

The heating / cooling element can be designed according to a design selected from the following group:

• in flat tube construction or in plate construction.

Several different types of heating / cooling elements can thus advantageously be equipped with the fluid flow channel described above, and consequently different types of construction can be positively modified with regard to their performance or efficiency.

A heating / cooling element is understood to mean a device with which a component or the surroundings can be heated or cooled by means of the first working fluid flowing in the device. Such heating / cooling elements can be used, for example, as battery coolers or for temperature control of electrical components.

Furthermore, at least one channel wall can have both no first reshaping and no second reshaping.

In this case, the duct wall, which has both no first and no second deformations, can advantageously be made completely flat, so that good contact can be established between the component and the deformation-free duct wall, so that the heat transfer from the first component to the heating / Cooling element is not deteriorated by air cushions or similar isolating elements.

• 1 einen durch eine erste Kanalwandung und eine zweite Kanalwandung begrenzten Strömungskanal mit ersten Umformungen und zweiten Umformungen,
• 2 den Fluidströmungskanal in Aufsicht in Strömungsrichtung,
• 3 einen Fluidströmungskanal der durch zwei Schalen ausgebildet wird,
• 4A, B zwei Schalen, die ineinandergesteckt den Fluidströmungskanal ausbilden, wobei die eine Schale punktförmige erste Umformungen und die zweite Schale langgesteckte gerade zweite Umformungen aufweist, wobei die zweiten Umformungen unter einem vorbestimmten Winkel quer zur Strömungsrichtung des ersten Arbeitsfluides im Fluidströmungskanal ausgerichtet sind,
• 5A, B ein Strömungsbild eines Fluidströmungskanals im Bereich der ersten Umformungen ohne zweite Umformungen (A) und mit zweiten Umformungen (B),
• 6A, B zwei Schalen, die ineinandergesteckt den Fluidströmungskanal ausbilden, wobei die eine Schale punktförmige erste Umformungen und die zweite Schale punktförmige zweite Umformungen aufweist,
• 7A, B zwei Schalen, die ineinandergesteckt den Fluidströmungskanal ausbilden, wobei die eine Schale punktförmige erste Umformungen und die zweite Schale langgesteckte zweite Umformungen in Zick-Zack-Form aufweist,
• 8 einen Wärmeübertrager in Schalenbauweise mit dem Fluidströmungskanal,
• 9a, b einen Ladeluftkühler in Rohrbauweise mit dem Fluidströmungskanal,
• 10a, b einen Kühlmittelkühler in Rohrbauweise mit dem Fluidströmungskanal,
• 11 einen Wärmeübertrager in Plattenbauweise mit dem Fluidströmungskanal,
• 12 ein Heiz-/Kühlelement mit dem Fluidströmungskanal.

Each shows schematically:

• 1 a flow channel delimited by a first channel wall and a second channel wall with first deformations and second deformations,
• 2 the fluid flow channel in supervision in the flow direction,
• 3 a fluid flow channel formed by two shells,
• 4A, B two shells which form the fluid flow channel when inserted, the one shell having punctiform first deformations and the second shell having elongated straight second deformations, the second deformations being oriented at a predetermined angle transversely to the direction of flow of the first working fluid in the fluid flow channel,
• 5A, B 3 shows a flow diagram of a fluid flow channel in the area of the first deformations without second deformations (A) and with second deformations (B),
• 6A, B two shells which, when plugged into one another, form the fluid flow channel, the one shell having punctiform first deformations and the second shell having punctiform second deformations,
• 7A, B two shells which, when plugged into one another, form the fluid flow channel, the one shell having punctiform first deformations and the second shell having elongated second deformations in a zigzag shape,
• 8th a heat exchanger in shell design with the fluid flow channel,
• 9a, b a charge air cooler in tubular construction with the fluid flow channel,
• 10a, b a coolant cooler in tubular construction with the fluid flow channel,
• 11 a plate-type heat exchanger with the fluid flow channel,
• 12 a heating / cooling element with the fluid flow channel.

In 1 is a fluid flow channel 100 shown, between a first channel wall 110 and a second channel wall 120 is arranged. In the second channel wall 120 are first transformations 130 formed the cohesively or positively with the first channel wall 110 are connected. Such a material or form-fitting connection can be formed in a form-fitting manner, for example by soldering or welding or by pressing the channel walls together.

In the first channel wall 110 are second transformations 140 trained around the first reshaping 130 and between the respective first transformations 130 are arranged. In a special embodiment, as shown, are the second transformations 140 in the middle between the first transformations 130 arranged. However, a non-central arrangement is also possible.

The first transformations 130 can, as shown, be punctiform during the second transformations 140 can be elongated and straight. But it is also conceivable that the second reshaping 140 also punctiform or the first transformations 130 are elongated.

The one around the respective first transformation 130 arranged second transformations 140 form a basic pattern 150 that repeats itself in the fluid flow channel 100 can be found. The basic pattern 150 by means of a circle 150 for a first transformation 130 be determined in the center, so that only a first reshaping 130 in a circle 150 is arranged, the circle 150 is chosen so large that it has at least one further first deformation 130 touched. The basic pattern determined in this way includes those in a circle 150 arranged first transformation 130 and all second transformations arranged at least proportionally in the circle 140 how this in the 1 . 3 is shown.

Out 2 can be seen that the first reshaping 130 with the first channel wall 110 are in contact during the second reshaping 140 at a predetermined spacing 160 from the second channel wall 120 are spaced. Through the second transformations 140 in interaction with the spacing 160 becomes a channel height 170 of the fluid flow channel 100 in the area of the second transformations 140 reduced so that due to the reduction of the channel height 170 the flow velocity is increased in this area. This advantageously leads to increased heat transfer in the area of the second deformations 140 compared to an embodiment in which no second reshaping 140 are provided.

According to 3 can such a fluid flow channel 100 through two hiding bowls 180 are formed, the respective bottom region of the shell the respective channel wall 110 . 120 trains. As a result, the surrounding shell walls form a channel boundary 190 through which the fluid flow channel 100 sideways or in the transverse direction 200 perpendicular to a flow direction 210 is limited. The direction of flow runs 210 along the macroscopic flow direction of the first working fluid and consequently from the inlet 220 to one in the 8th shown outlet 225 , The fluid flow channel 100 is limited by the channel 190 on both sides with regard to its channel width 230 limited, the channel width 230 in the transverse direction 200 is determined.

Are elongated second transformations 140 , as in 3 shown, or not shown elongated first transformations 130 transverse to the direction of flow 210 arranged, so the second transformations 140 and possibly the first transformations 130 at a predetermined angle α transverse to the direction of flow 210 be arranged.

The in the 1 to 3 illustrated embodiment has the first transformations 130 only on the second channel wall 120 on while the second transformations 140 on the first channel wall 110 are trained. Accordingly, each is on a channel wall 110 . 120 just one type of reshaping 130 . 140 educated.

In the 4A, B are the two shells separately 180 shown that the first channel wall 110 and the second channel wall 120 according to the 1 to 3 build up.

According to 4A shows the shell 180 that the first channel wall 110 builds up the second transformations 140 on that of the in the 4B shown second channel wall 120 the Bowl 180 in the installed position with a predetermined spacing 160 are arranged. The in the 4A shown second transformations 140 are under the supervision of 4A directed downwards into the first channel wall 110 embossed. As shown, the second transformations 140 be formed as elongated deformations, the same at a predetermined angle α to the direction of flow 210 can be arranged. The second transformations 140 but can also be designed in forms as described above.

The in the 4B shown shell 180 builds the second channel wall 120 on that the first reshaping 130 having. These first transformations 130 are with the opposite first channel wall 110 cohesively or positively connected and can also be between the inlet for stability reasons 220 , Outlet 225 for the first working fluid and between the inlets, outlets 240 for the further working fluid to be arranged to the stability of the fluid flow channel 100 to ensure even in these areas. Here are the first transformations 130 in the in the 4B shown supervision directed upwards into the second channel wall 120 embossed so that when the two shells 180 are hidden in each other, both transformations 130 . 140 in the then between the channel walls 110 . 120 trained fluid flow channel 100 protrude into it. As shown, the first reshaping 130 be point-shaped or have a shape as described above.

5A, B now show flow patterns of the first working fluid in the area between the first forming 130 without second transformations ( 5A ) and with second transformations ( 5B ). The simulated flow patterns result from the fact that the fluid flow channel 100 divides in the middle and the first channel wall 110 folded over so that the second channel wall 120 and the first channel wall 110 are arranged side by side. Here is only a section of the fluid flow channel 100 shown, which is roughly the basic pattern 150 equivalent. Here is the first transformation 130 shown as a "hole" because of a central section through the fluid flow channel 100 was made, and so far the cut through the first reshaping 130 runs. The extension of the second transformations 140 points according to the 5A, B only a third of the canal height 170 of the fluid flow channel 100 on so that the central cut doesn't go through the second reshaping 140 runs. Accordingly, in the 5B the second transformations 140 only perceptible due to their effect and the associated increased heat exchange.

5A shows the flow pattern of the first working fluid for the first channel wall 110 and the second channel wall 120 without second reshaping 140 in the first channel wall 110 are embossed. Both for the first channel wall 110 , as well as for the second channel wall 120 can heat exchange zones 245 be recognized, the heat exchange zones 245 in the area of the second channel wall 120 due to the channel narrowing 250 through a plinth area 270 the first transformation 130 are enlarged. The representation of the channel narrowing 250 in the plinth area 270 the first transformation 130 can he 2 be removed.

The 5B shows the flow pattern of the first working fluid for the first channel wall 110 and the second channel wall 120 if in the first channel wall 110 second transformations 140 are trained. In the area of the second transformations 140 occur both on the first channel wall 110 , as well as on the second channel wall 120 efficiency-enhanced heat exchange zones 260 on, the overall performance or efficiency of the fluid flow channel 100 increase. These are efficiency-enhanced heat exchange zones 260 on the first channel wall 110 more trained than on the second channel wall 120 ,

A similar effect as described above can also be achieved by other forms of initial reshaping 130 and second transformations 140 can be achieved.

In the 6A, B are more bowls 180 shown that the first channel wall 110 and the second channel wall 120 according to the 1 to 3 can build.

According to 6A shows the shell 180 that the first channel wall 110 builds up the second transformations 140 on that of the in the 6B shown second channel wall 120 the Bowl 180 in the installed position with a predetermined spacing 160 are arranged.

The in the 6A shown second transformations 140 are under the supervision of 6A directed downwards into the first channel wall 110 embossed. As shown, the second transformations 140 be designed as punctiform deformations, the punctiform second deformations 140 in the spaces between the first transformations 130 protrude so that the between the first forming 130 arranged fluid flow channel 100 at least in its channel height 170 is reduced. The second transformations 140 but can also be formed in other forms described above.

The in the 6B shown shell 180 builds the second channel wall 120 on that the first reshaping 130 having. These first transformations 130 are with the opposite first channel wall 110 cohesively or positively connected and can also be between the inlet for stability reasons 210 , Outlet 220 for the first working fluid and between the inlets, outlets 240 for the further working fluid to be arranged to the stability of the fluid flow channel 100 to ensure even in these areas. Here are the first transformations 130 in the in the 6B shown supervision directed upwards into the second channel wall 120 embossed so that when the two shells 180 are hidden in each other, both transformations 130 . 140 in the then between the channel walls 110 . 120 trained fluid flow channel 100 protrude into it. As shown, the first reshaping 130 be point-shaped or have a shape as described above.

In the 7A, B are more bowls 180 shown that the first channel wall 110 and the second channel wall 120 according to the 1 to 3 can build.

According to 7A shows the shell 180 that the first channel wall 110 builds up the second transformations 140 on that of the in the 7B shown second channel wall 120 the Bowl 180 in the installed position with a predetermined spacing 160 are arranged. The in the 7A shown second transformations 140 are under the supervision of 7A directed downwards into the first channel wall 110 embossed. As shown, can be used as second reshaping 140 Elongated, wavy or zigzag-shaped formations are used, such zigzag-shaped formations 140 in the spaces between the first transformations 110 run and into the spaces between the first transformations 130 protrude so that the between the first forming 130 arranged fluid flow channel 100 at least in its channel height 170 is reduced. The second transformations 140 but can also be formed in other forms described above.

The in the 7B shown shell 180 builds the second channel wall 120 on that the first reshaping 130 having. These first transformations 130 are with the opposite first channel wall 110 cohesively or positively connected and can also be between the inlet for stability reasons 210 , Outlet 220 for the first working fluid and between the inlets, outlets 240 for the further working fluid to be arranged to the stability of the fluid flow channel 100 to ensure even in these areas. Here are the first transformations 130 in the in the 7B shown supervision directed upwards into the second channel wall 120 embossed so that when the two shells 180 are hidden in each other, both transformations 130 . 140 in the then between the channel walls 110 . 120 trained fluid flow channel 100 protrude into it. As shown, the first reshaping 130 be point-shaped or have a shape as described above.

In 8th is a complete heat exchanger 280 Shown in a shell construction, made up of several shells hidden one inside the other 180 is trained. This is done through the shells 180 the first channel wall 110 and the second channel wall 120 built up. Between the first channel wall 110 and the second channel wall 120 are the fluid flow channels, respectively 110 educated. There are in the first channel wall 110 the second transformations 140 formed, which in the present representation down into the fluid flow channel 100 extend into it while in the second channel wall 120 the first transformations 130 are formed, which in the present illustration are directed upward into the fluid flow channel 100 extend into it. In other flow channels 285 can be a flow application 290 to be introduced in these flow channels 285 to increase efficiency or performance. Using an inlet connector 300 can the heat exchanger 280 the first working fluid in shell design 310 are fed and from the outlet port 320 can the same from the heat exchanger 280 drain in shell construction again. The supply of the additional working fluid can via other inlets and outlets to the heat exchanger in a shell construction 280 fed and discharged. Furthermore, a base shell can be used 330 be provided, which is reinforced and on a flange plate 340 is arranged so that the shell package tears in the area of the base shell 330 or flange plate 340 can be reduced or prevented.

In the 9A is a flat tube 350 shown that a first channel wall 110 and a second channel wall 120 having. In the first channel wall 110 are first transformations 130 trained with the second channel wall 120 are soldered, the first transformations 130 alternatively or additionally also in the second channel wall 120 can be trained. The second transformations 140 between the first transformations 130 can be arranged in the second channel wall 120 or alternatively or additionally, as shown, in the first channel wall 110 be trained. Both the first transformations 130 , as well as the second transformations 140 extend into the fluid flow channel 100 inside, the outside the flat tube 350 and therefore between the flat tubes 350 is arranged. As a result, the first reshaping 130 and the second transformations 140 with regard to the flat tube directed "outside".

With such pipes, heat exchangers can 360 be formed in flat tube construction, in which in this 9B shown construction the fluid flow channel 100 between the flat tubes 350 located. Such flat tubes 350 can each have a terminally arranged recording 370 be plugged in and with a possibly multi-part housing 380 be surrounded, being in the housing 380 Feed / discharge channels 390 can be formed for the first working fluid, via which the fluid flow channels 100 can be supplied with the first working fluid.

In the 10A is a flat tube 350 shown that a first channel wall 110 and a second channel wall 120 having. In the first channel wall 110 are first transformations 130 trained with the second channel wall 120 are soldered, the first transformations 130 alternatively or additionally also in the second channel wall 120 can be trained. The second transformations 140 between the first transformations 130 can be arranged in the second channel wall 120 or alternatively or additionally, as shown, in the first channel wall 110 be trained. Both the first transformations 130 , as well as the second transformations 140 extend into the fluid flow channel 100 inside, inside the flat tube 350 is arranged. As a result, the first reshaping 130 and the second transformations 140 with regard to the flat tube directed "inwards".

With such flat tubes 350 heat exchangers 360 train in flat tube construction, in which the fluid flow channels 100 inside the flat tubes 350 are arranged. Such in the 10B shown heat exchanger 360 in flat tube design has several flat tubes 350 on that in each end-arranged recordings 370 are plugged in. Between the flat tubes 350 can flow inserts 290 be arranged, for example in the case of a coolant cooler these flow inserts 290 are designed as air fins, so that through the flat tubes 350 flowing coolant can be cooled by means of ambient air.

In the 11 is a heat exchanger 400 shown in slab construction, two slabs each 410 a pair of plates 420 build up. Within the pair of plates 420 can be a flow application 290 be arranged while on the individual plates 410 outward shaping 130 and / or second transformations 140 can be trained. It is conceivable that on each plate of a pair of plates 420 both first reshaping and second reshaping 140 are formed or it can be on only one plate at a time 410 only first transformations 130 or only second transformations 140 be trained. The fluid flow channel 100 is between the plate pairs 420 educated. Accordingly, one of such pairs of plates 420 trained core with regard to the plate pairs 420 flows around by the first working fluid, so that in the fluid flow channels 100 flowing working fluid with that in the pair of plates 420 flowing further working fluid can enter into heat exchange.

In the 12 a heating / cooling element is shown, with which, for example, electronics or batteries can be cooled. Such a heating / cooling element 430 can consist of two plates 410 be removed, the two panels 410 the pair of plates 420 surrender. For heating / cooling elements for battery cooling in particular, it is advisable to use one of the plates 410 plan so that the thermal contact to the battery is not impaired by insulating air cushions or the like. As a result, it is advisable to carry out the first transformations 130 and the second transformations 140 on the same plate 410 to train. The two plates form 410 the first channel wall 110 and the second channel wall 120 out. The fluid flow channel is limited 100 in this case, on the one hand, through the plate edges 440 that as channel limitation 190 act, but also by one within the pair of plates 420 arranged channel limitation 190 , so that in this case a U-turn-shaped flow direction 210 from the inlet 220 to the outlet 225 is possible.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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

• US 2017184347 A [0002]

Claims (20)

Fluid flow channel in a heat exchanger (280, 360, 395, 400) or in a cooling / heating element (430) for a heat-absorbing or heat-emitting first working fluid (310) comprising: a first channel wall (110) and a second channel wall (120) which are arranged opposite one another and via which the first working fluid (310) flowing in the fluid flow channel (100) with at least one further working fluid of the heat exchanger (280, 360, 395, 400) or is in heat exchange with at least one further component or with the surroundings of the cooling / heating element (430), first deformations (130) extending into the fluid flow channel (100), each with the opposite channel wall (110, 120) or in the opposite channel wall (110, 120), first deformations (130) extending into the fluid flow channel (100), integrally or are positively connected and second deformations (140) extending into the fluid flow channel (100), each of which is at a predetermined spacing (160) from the opposite channel wall (110, 120) or from the one formed in the opposite channel wall (110, 120) and into the fluid flow channel (100) second formations (140) extending into it, wherein the first reshaping (130) and the second reshaping (140) are arranged relative to one another in such a way that they form at least one basic pattern (150) that can be found repeatedly, in each of which a first reshaping (130) is surrounded by at least one second reshaping (140) . Fluid flow channel according to one of the preceding claims, wherein the first channel wall (110) and / or the second channel wall (120) is planar. Fluid flow channel according to one of the preceding claims, wherein the predetermined spacing (160) is 10% to 90% of a channel height (170) of the fluid flow channel (100). Fluid flow channel according to one of the preceding claims, wherein the at least one basic pattern (150) in the fluid flow channel (100) can be found more than 2 times. Fluid flow channel according to one of the preceding claims, wherein more than one basic pattern (150) can be found within the fluid flow channel (100). Fluid flow channel according to one of the preceding claims, wherein 2 to 12 second deformations (140) are arranged within the at least one basic pattern (150). Fluid flow channel according to one of the preceding claims, wherein the deformations (130, 140) are positioned according to at least one arrangement selected from the following group: an arrangement of first deformations (130) in the first channel wall (110), an arrangement of first deformations (130) in the second channel wall (120), an arrangement of second deformations (140) in the first channel wall (110), an arrangement of second deformations (140) in the second channel wall (120). Fluid flow channel according to one of the preceding claims, wherein the distance between the first deformations (130) and the second deformations (140) is of the same size or of different sizes within a basic pattern (150). Fluid flow channel according to one of the preceding claims, wherein at least some second deformations (140) are each arranged in the middle between two first deformations (130). Fluid flow channel according to one of the preceding claims, wherein at least two different forms of first deformations (130) are formed in the fluid flow channel (100). Fluid flow channel according to one of the preceding claims, wherein at least one deformation (130, 140) selected from the following group: a first forming (130), a second forming (140), has at least one form selected from the following group: a round shape, an oval shape, an elongated shape, a straight shape, a curved shape, a wavy shape, a zigzag shape, a mesh shape of overlapping elongated shapes, in the case of elongated shapes, the extension of the shape in the flow direction (210) can be aligned parallel or at a predetermined first angle (α) transverse to the flow direction (210) of the first working fluid (310) in the fluid flow channel (100). Fluid flow channel according to one of the preceding claims, wherein the predetermined first angle (α) is 10 degrees to 80 degrees. Fluid flow channel according to one of the preceding claims, wherein in the case of an elongated shape the extent of the elongated shape is less than 70% of the channel width (230) of the fluid flow channel (100). Heat exchanger with at least one fluid flow channel according to one of the preceding claims, wherein the first working fluid (310) flowing in the fluid flow channel (100) is in heat exchange with at least one further working fluid. Heat exchanger according to one of the preceding claims, wherein the heat exchanger (280, 360, 395, 400) is designed according to a construction selected from the following group: in shell construction (280), in flat tube construction (360) or in plate construction (400). Heat exchanger according to one of the preceding claims, wherein the heat exchanger (280, 360, 395, 400) is designed according to an application type selected from the following group: as an oil cooler (280) in a shell construction, a flow insert (290) being arranged in at least one oil flow channel and the fluid flow channel (100) being formed in at least one coolant channel, as a plate-type oil cooler (400), a flow insert (290) being arranged in at least one oil flow channel and the fluid flow channel (100) being formed in at least one coolant channel, as a charge air cooler (360) in tubular construction, a flow insert (290) being arranged in at least one air flow channel and the fluid flow channel (100) being formed in at least one coolant channel, as a plate-type charge air cooler, a flow insert (290) being arranged in at least one air flow channel and the fluid flow channel (100) being formed in at least one coolant channel, as a coolant cooler (395) in tubular construction, a flow insert (290) being arranged in at least one air flow channel and the fluid flow channel (100) being formed in at least one coolant channel. Heating / cooling element with at least one fluid flow channel (100) according to one of the preceding claims, wherein the first working fluid (310) flowing in the fluid flow channel (100) is in heat exchange with at least one component or the environment. Heating / cooling element according to one of the preceding claims, wherein the heating / cooling element (430) is designed according to a construction selected from the following group: in flat tube construction or in plate construction. Heating / cooling element according to one of the preceding claims, wherein the heating / cooling element (430) is designed as an electronic cooler, in particular as a battery cooler, wherein the fluid flow channel (100) can be formed in at least one coolant channel. Heating / cooling element according to one of the preceding claims, wherein at least one channel wall (110, 120) has both no first deformations (130) and no second deformations (140).

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