CN217131957U - Heat exchanger core and heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchange, in particular to a heat exchanger core and a heat exchanger. This heat exchanger core includes this somatic part and vortex portion, and this somatic part is equipped with the runner, and the protruding internal face of locating the runner of vortex portion, vortex portion include front end and rear end, and from front end to rear end, the width crescent, the height of vortex portion reduce gradually. The heat exchanger core body can enhance disturbance when fluid flows by arranging the turbulence part, so that the heat exchange efficiency of the heat exchanger core body is improved.

Description

Heat exchanger core and heat exchanger

Technical Field

The application relates to the technical field of heat exchange, especially, relate to a heat exchanger core and heat exchanger.

Background

The heat exchanger includes the passageway that supplies the fluid circulation, and this passageway current scheme adopts straight passageway more, only strengthens the heat transfer through increasing heat transfer area. In the scheme, the channels with the corrugated structures are adopted, so that the heat exchange area can be increased and the turbulence can be enhanced, but dead zones are easily formed at the positions of the corrugations or wave troughs of the corrugated structures, and the local heat exchange effect is reduced; when other shapes such as I-shaped shapes are adopted, although the heat exchange effect is improved, the resistance of the heat exchanger is greatly increased, and the industrial application is not facilitated.

SUMMERY OF THE UTILITY MODEL

The application provides a heat exchanger core and heat exchanger, sets up the vortex part in this heat exchanger core fluid passage. In the fluid flowing direction, the variable cross-section structure of the turbulence component induces the fluid to generate a longitudinal vortex structure, so that the mixing of the fluid is enhanced, and meanwhile, the disturbance of the fluid can reduce the thickness of a thermal boundary layer, so that the heat exchange efficiency of the heat exchanger core is improved.

This application first aspect provides a heat exchanger core, the heat exchanger core includes:

a body portion provided with a flow passage;

the flow disturbing part is convexly arranged on the inner wall surface of the flow channel and comprises a front end and a rear end, the front end is connected with the rear end, and the width and the height of the flow disturbing part are gradually increased and reduced.

In this scheme, the setting of vortex portion can strengthen the disturbance of the fluid in the runner, and the fluid of disturbance can destroy fluidic boundary layer to reduce the thickness of boundary layer, strengthen the heat transfer effect of heat exchanger core. Compare in conventional vortex part, the vortex portion front end that adopts in this application reduces gradually to the sectional area of rear end, can reduce the area in backward flow district by a wide margin to when guaranteeing to increase the disturbance, can not increase flow resistance again by a wide margin.

In one possible design, the front end is located upstream of the rear end in the fluid flowing direction of the flow channel, and the cross-sectional area of the spoiler portion increases and then decreases.

In a possible design, the front end is located upstream of the rear end in the fluid flowing direction of the flow channel, and the cross-sectional area of the spoiler portion increases and then decreases.

In one possible design, the spoiler has a tetrahedral structure including a first top surface and two side surfaces extending from the rear end to the front end.

In a possible design, the joint of the first top surface and the side surface, the joint of the first top surface and the inner wall surface of the flow channel, and the joints of the two side surfaces and the inner wall surface of the flow channel are provided with arc chamfers.

In one possible design, both of the sides are curved.

In another possible design, the spoiler is a pentahedral structure including a second top surface, a first side surface, a second side surface extending from the rear end to the front end, and a third side surface connecting the second top surface, the first side surface, and the second side surface.

In a possible design, one or more turbulence part groups are arranged in the flow channel at intervals, each turbulence part group comprises one or more turbulence parts, and the turbulence parts (2) are arranged in parallel or in a staggered mode along the fluid flowing direction of the flow channel.

In a possible design, along the fluid flowing direction of the flow channel, the rear ends and the front ends of two adjacent spoiler groups are alternately arranged in the opposite direction.

In one possible design, the flow channel includes one or more layers of stacked fluid channels, and the flow disturbing portion is provided on an inner wall surface of each layer of the fluid channels.

In a possible design, two adjacent layers of the fluid channels are arranged at a preset included angle, each layer of the fluid channel comprises one or more sub-channels, and the inner wall surface of each sub-channel is provided with the turbulence part.

A second aspect of the present application provides a heat exchanger comprising a shell and a heat exchanger core as described above.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic structural view of a heat exchanger core provided herein in one embodiment;

FIG. 2 is a schematic structural diagram of a spoiler in the flow channel of FIG. 1 according to a first embodiment;

FIG. 3 is a schematic structural view of the spoiler shown in FIG. 2 from another perspective;

FIG. 4 is a schematic structural diagram of the spoiler shown in FIG. 1 according to a first embodiment;

FIG. 5 is a schematic structural diagram of a spoiler in the second embodiment of FIG. 1;

FIG. 6 is a schematic structural diagram of a spoiler in a third embodiment of FIG. 1;

FIG. 7 is a schematic structural diagram of a spoiler in a fourth embodiment of FIG. 1;

FIG. 8 is a schematic structural diagram of a spoiler in a fifth embodiment of FIG. 1;

FIG. 9 shows various arrangements of the spoiler shown in FIG. 1 in the flow channel;

fig. 10 shows another arrangement of the spoiler in fig. 1 in the flow channel.

Reference numerals:

1-a body portion;

11-a first flow channel;

12-a second flow channel;

13-a plate body;

2-a flow disturbing part;

21-front end;

22-back end;

23-a first top surface;

24-side;

25-a first side;

26-a second side;

27-third side.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The present embodiment provides a heat exchanger, which includes a heat exchanger core and a shell (not shown in the figure), wherein the heat exchanger core is installed in the shell. The heat exchanger is used for realizing the circulation of two fluids in the equipment and fully exchanging heat in the process of the circulation of the two fluids, and has the characteristics of high heat transfer efficiency, small resistance, easy manufacture, simple structure and firmness.

Specifically, as shown in fig. 1 and fig. 2, the core body of the heat exchanger includes a body portion 1 and a spoiler 2, wherein the body portion 1 is provided with a flow channel for flowing a fluid, the spoiler 2 is protruded from an inner wall surface of the flow channel, the spoiler 2 includes a front end 21 and a rear end 22 along a direction in which the fluid flows (as shown by an arrow in fig. 2), and the width and the height of the spoiler 2 are gradually increased and decreased from the front end 21 to the rear end 22.

In the present embodiment, the front end 21 and the rear end 22 include only the portions indicated in fig. 2. And the cross-sectional direction of the end 21 and the rear end 22 is perpendicular to the flow direction of the fluid. In this embodiment, the width of the spoiler portion 2 is gradually increased, when fluid flows in the flow channel, so that the fluid passes through the spoiler portion 2, the fluid is divided into two parts at the front end 21, and the two parts of fluid are crossed to form a vortex when the rear end 22 is converged, that is, the setting of the spoiler portion 2 can enhance the disturbance of the fluid in the flow channel, and the disturbed fluid can break the boundary layer of the fluid, thereby reducing the thickness of the boundary layer and enhancing the heat exchange effect of the heat exchanger core. Meanwhile, the height of the turbulent flow part 2 is gradually reduced, so that when fluid flows through the turbulent flow part 2, the speed of the fluid in the direction perpendicular to the flowing direction of the fluid is different, the hydrostatic pressure is changed, two longitudinal vortexes are finally formed on two side surfaces of the turbulent flow part 2, and the fluid flowing spirally can break a boundary layer of the fluid, so that the thickness of the boundary layer is reduced, and the heat exchange effect is further enhanced.

In the present embodiment, the flow direction of the fluid is not limited to the direction shown by the arrow in the figure, and the fluid may flow in the direction opposite to the arrow.

In a specific embodiment, as shown in fig. 2, the leading end 21 is located upstream of the trailing end 22 in the direction of fluid flow in the flow passage (direction indicated by arrow in fig. 2), and the cross-sectional area of the spoiler 2 increases and then decreases.

In this embodiment, the cross-sectional area of vortex portion 2 by front end 21 to rear end 22 increases earlier afterwards to reduce, the increase proportion of vortex portion 2 width direction is corresponding with the reduction proportion of direction of height promptly, make the fluid produce great change at width direction and direction of height's speed homoenergetic when vortex portion 2, increase the disturbance effect, simultaneously above-mentioned change is continuous gradually, make this vortex portion 2 continuous between front end 21 to rear end 22, do not have arch or sunken, thereby can reduce the resistance of fluid when flowing in the runner, reduce the energy consumption that the fluid flows, thereby reduce driving system's energy consumption. And the fluid is divided into two parts at the front end 21, and as the size of the spoiler 2 is increased and then decreased, the two parts of the fluid are gradually divided and can be merged at the rear end 22, the vortex formed at the rear end 22 is relatively stable, and the resistance of the fluid in flowing is not increased remarkably while the heat exchange is enhanced.

In another specific embodiment, as shown in fig. 2, the leading end 21 is located downstream of the trailing end 22 in the direction of fluid flow in the flow passage (opposite to the direction indicated by the arrow in fig. 2), and the cross-sectional area of the spoiler 2 increases and then decreases.

In this embodiment, as the size of the turbulent portion 2 is increased and then decreased, the two streams of fluid are gradually separated and finally can be converged at the front end 21, the formed vortex is relatively stable, and the resistance of the fluid during flowing is not significantly increased while the heat exchange is enhanced.

Specifically, as shown in fig. 2, the spoiler 2 has a tetrahedral structure including a first top surface 23 and two side surfaces 24 extending from the rear end 22 to the front end 21.

In this embodiment, vortex portion 2 is the tetrahedron structure, can satisfy and reduce after increasing from front end 21 to the sectional area of rear end 22 earlier, can make vortex portion 2 be smooth transition from front end 21 to rear end 22 again to this structure is easily processed, thereby simplifies the structure of runner, improves the structural strength of this somatic part 1.

In this embodiment, the spoiler 2 may be integrally formed with the body 1, as shown in fig. 3, the spoiler 2 may be integrally formed with the body 1, and the spoiler 2 is internally hollow or the spoiler 2 is fixedly connected to the body 1.

As shown in fig. 4, the tetrahedron may be a tetrahedron having a projection plane perpendicular to the flow direction of the fluid as an equilateral triangle, as shown in fig. 5, and the tetrahedron may also be a tetrahedron having a projection plane perpendicular to the flow direction of the fluid as a right triangle.

In one embodiment, as shown in fig. 2, the outer contour of the spoiler 2 is arc-shaped, that is, the joint of the first top surface 23 and the side surface 24, the joint of the first top surface 23 and the inner wall surface of the flow channel, and the joints of the two side surfaces 24 and the inner wall surface of the flow channel are provided with arc-shaped chamfers.

In this embodiment, each surface of the turbulent portion 2 has arc-shaped transition, which can avoid dead angles caused by the large amount of gathering of fluid at the corners of the surfaces, so that the arc-shaped outer contour is favorable for reducing the resistance of the fluid when flowing through, thereby reducing the energy consumption, improving the turbulence degree of the fluid when flowing through the turbulent portion 2, and being favorable for uniform heat transfer.

In another embodiment, as shown in FIG. 6, both sides 24 are arcuate. In this embodiment, the arcwall face can be to indent or evagination, and this arcwall face can further increase the disturbance of the production when fluid flows through, strengthens heat exchange efficiency.

In another embodiment, the spoiler 2 has a pentahedral structure, and as shown in fig. 7, the spoiler 2 has a trapezoidal cross-section in the fluid flow direction, and includes a second top surface (not shown) extending from the rear end 22 to the front end 21, a first side surface 25, a second side surface 26, and a third side surface 27 connecting the second top surface (not shown), the first side surface 25, and the second side surface 26.

In this embodiment, different from the tetrahedron structure, the first side surface 25 and the second side surface 26 are connected by a surface rather than an edge, and the structure makes the angle at which the fluid is separated when passing through the turbulent flow portion 2 larger, and the generated disturbance also becomes larger, so that the turbulent flow effect can be increased, and the heat exchange efficiency can be improved.

In this embodiment, as shown in fig. 8, the first side surface 25 and the second side surface 26 may also be arc-shaped surfaces.

In the above embodiments, as shown in fig. 4, one or more spoiler groups may be disposed at intervals in the flow channel, each spoiler group includes one or more spoiler 2, and the spoiler 2 are arranged in parallel or in a staggered manner along the fluid flowing direction of the flow channel.

In this embodiment, be equipped with a plurality of vortex portion groups in the runner, and every vortex portion group includes one or more vortex portion 2 for the quantity of vortex portion 2 that the fluid flowed is more, thereby can further increase the vortex effect when the fluid flows in the runner, further improve the heat transfer effect of heat exchanger core, among the practical application, the size of vortex portion 2 depends on the size of runner, the quantity of vortex portion 2 also is relevant with the width of runner and the width of vortex portion 2.

Specifically, as shown in fig. 9, the plurality of flow disturbing portions 2 may have a plurality of arrangement manners such as parallel arrangement or staggered arrangement, for example, in the first case, the flow disturbing portions 2 are arranged in parallel in the fluid flowing direction as indicated by arrows in fig. 3, and the number of the flow disturbing portions 2 arranged at the same position in the fluid flowing direction is represented by a number, and the arrangement manner is parallel arrangement and may be simply denoted as 1 → 1 → 1, and such arrangement manner can enhance the flow disturbing effect in the flow passage, thereby improving the heat exchange effect of the heat exchanger core, and when the flow disturbing portions are arranged in parallel, the resistance to the fluid flow is small. The turbulent flow parts 2 can also be arranged in a mode of 1 → 2 → 1 → 2, 2 → 3 → 2 → 3 and the like in the same mode, the arrangement mode is staggered arrangement, and the turbulent flow effect in the flow channel can be further enhanced by the arrangement mode, so that the heat exchange effect of the heat exchanger core is improved.

In a specific embodiment, as shown in fig. 10, the spoiler 2 of two adjacent spoiler groups is alternately arranged with the rear end 22 facing and the front end 21 facing in the fluid flow direction of the flow channel.

In this embodiment, when the front ends 21 and/or the rear ends 22 of the spoiler 2 in adjacent spoiler groups are arranged in opposite directions, the change of the flow direction of the fluid is small when the fluid passes through two adjacent spoiler groups, so that the resistance of the fluid flow can be reduced, and the energy consumption of the power system is reduced.

In one embodiment, as shown in fig. 1, the flow channel includes one or more layers of stacked fluid channels, and the inner wall surface of each layer of fluid channel is provided with a spoiler 2.

In this embodiment, should establish the quantity that has increased vortex portion 2 in the runner, consequently can increase the vortex effect, and then improve heat exchange efficiency.

In the above embodiments, as shown in fig. 1, the fluid channel includes the first flow channel 11 and the second flow channel 12 that are arranged at intervals along the height direction (Z), so that the fluid in the first flow channel 11 exchanges heat with the fluid in the second flow channel 12, and the first flow channel 11 and the second flow channel 12 form a predetermined included angle. The first flow channel 11 and the second flow channel 12 are sub-channels in the fluid channel, and the first flow channel 11 and the second flow channel 12 are arranged in two adjacent layers of the fluid channel.

In this embodiment, the first flow channel 11 and the second flow channel 12 have different directions (a predetermined included angle is formed between the two), that is, the directions of the fluid flowing in the first flow channel 11 and the second flow channel 12 are different. And two streams of fluid respectively flow in the first flow channel 11 and the second flow channel 12 in a cross manner, so that the heat exchanger core has the advantages of compact structure and easiness in processing on the premise of realizing high-efficiency heat exchange.

In a possible embodiment, the first flow channels 11 and the second flow channels 12 are arranged in a 90 ° crossing manner, which is beneficial for practical application; or the included angle between the first flow channel 11 and the second flow channel 12 is 180 degrees, that is, the fluid directions in the first flow channel 11 and the second flow channel 12 are completely opposite, so that the temperature difference between the first flow channel 11 and the second flow channel 12 is maximized, and the heat exchange is enhanced.

The main body 1 includes a plurality of plate bodies 13, and the plurality of plate bodies 13 are connected to form the first flow channel 11 and the second flow channel 12, so that when a preset included angle between the first flow channel 11 and the second flow channel 12 is 90 °, adjacent plate bodies 13 are connected vertically. The spoiler 2 is disposed on the plate 13.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (12)

1. A heat exchanger core, comprising:

the body part (1), the body part (1) is provided with a flow channel;

vortex portion (2), the protruding internal face of locating of vortex portion (2) the runner, vortex portion (2) include front end (21) and rear end (22), follow front end (21) extremely rear end (22), the width crescent, the high taper of vortex portion (2).

2. The heat exchanger core according to claim 1, wherein the flow perturbation (2) increases and then decreases in cross-sectional area in the direction of fluid flow along the flow channel, with the leading end (21) being located upstream of the trailing end (22).

3. The heat exchanger core according to claim 1, wherein the flow perturbation (2) increases and then decreases in cross-sectional area in the direction of fluid flow along the flow channel, with the leading end (21) being located downstream of the trailing end (22).

4. The heat exchanger core according to claim 1, wherein the flow perturbation (2) is of a tetrahedral structure comprising a first top surface (23) and two side surfaces (24) extending from the rear end (22) towards the front end (21).

5. The heat exchanger core according to claim 4, wherein the junction of the first top surface (23) and the side surfaces (24), the junction of the first top surface (23) and the inner wall surface of the flow channel, and the junction of the two side surfaces (24) and the inner wall surface of the flow channel are provided with arc-shaped chamfers.

6. The heat exchanger core according to claim 4, wherein both of the side surfaces (24) are arcuate surfaces.

7. The heat exchanger core according to claim 1, wherein the flow perturbation (2) is of a pentahedral structure comprising a second top face, a first side face (25), a second side face (26) extending from the rear end (22) towards the front end (21), and a third side face (27) connecting the second top face, the first side face (25) and the second side face (26).

8. The heat exchanger core body as claimed in any one of claims 1 to 7, wherein one or more turbulence portion groups are arranged in the flow channel at intervals, each turbulence portion group comprises one or more turbulence portions (2), and the turbulence portions (2) are arranged in parallel or in a staggered manner along the fluid flowing direction of the flow channel.

9. The heat exchanger core as claimed in claim 8, wherein the turbulators (2) of two adjacent turbulator groups are alternately arranged with the trailing ends (22) facing each other and the leading ends (21) facing each other in the fluid flow direction of the flow channel.

10. The heat exchanger core as claimed in any one of claims 1 to 7, wherein the flow channel comprises one or more layers of stacked fluid channels, and the flow disturbing part (2) is provided on an inner wall surface of each layer of the fluid channels.

11. The heat exchanger core as claimed in claim 10, wherein two adjacent layers of the fluid passages are arranged at a predetermined included angle, each layer of the fluid passages comprises one or more sub-passages, and the flow disturbing part (2) is arranged on an inner wall surface of each sub-passage.

12. A heat exchanger, characterized in that the heat exchanger comprises:

a housing;

a heat exchanger core as claimed in any one of claims 1 to 11.

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