CN215177190U - Heat exchanger core and heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchangers, in particular to a heat exchanger core and a heat exchanger. The heat exchanger core includes: each laminated plate body is provided with a first flow channel, the laminated plate bodies are stacked at intervals, so that a second flow channel is formed between the adjacent plate bodies, and the first flow channel and the second flow channel are arranged in a crossed manner; wherein, the surface of the plate body close to one side of the second flow channel is a concave-convex surface. The first flow channel and the second flow channel are sequentially arranged and are arranged in a crossed mode, so that heat of air flow in the second flow channel is transferred to the air flow in the first flow channel, heat transfer and recovery in the air flow are achieved, the surface where the second flow channel is located is a concave-convex surface, the flowing amplitude of the air flow in the second flow channel is increased, turbulent flow heat exchange of a core body of the heat exchanger is achieved, and the heat exchange effect is improved.

Description

Heat exchanger core and heat exchanger

Technical Field

The application relates to the technical field of heat exchangers, in particular to a heat exchanger core and a heat exchanger.

Background

The cross-flow heat exchanger can ensure that mass exchange does not occur while two flows flowing through the cross-flow heat exchanger exchange heat, and mass mixing does not occur, so that other impurities cannot be brought into the fluid to be recycled after treatment, and the cross-flow heat exchanger is widely applied to the fields of heat recovery, indirect evaporation heat exchange and the like. At present, the heat transfer coefficient of a related heat exchanger is small, the heat exchange capacity is improved by increasing the volume, and the heat exchanger is not suitable for the application scene of a compact unit. Therefore, a certain heat transfer enhancement means is required to be adopted to improve the heat transfer coefficient and realize larger heat transfer capacity under the same volume.

SUMMERY OF THE UTILITY MODEL

The application provides a heat exchanger core and heat exchanger increases the vortex heat transfer, improves the heat transfer effect.

The application provides a heat exchanger core, the heat exchanger core includes:

each layer of plate body is provided with a first flow channel, and each layer of plate body is stacked at intervals to form a second flow channel between the adjacent plate bodies, and the first flow channel and the second flow channel are arranged in a crossed manner;

wherein, the surface of the plate body close to one side of the second flow channel is a concave-convex surface.

In a possible design, a plurality of partition plates are arranged at intervals on the first flow channel of each layer of plate body, the partition plates divide the first flow channel into a plurality of sub-flow channels, and at least parts of the sub-flow channels protrude towards one side close to the second flow channel to form folding angles, so that the concave-convex surfaces are formed on the plate body.

In a possible design, the plate body is provided with a plurality of first turbulence portions, and the first turbulence portions are arranged in the first flow channels.

In one possible design, the plate body is provided with a plurality of second turbulence portions, and the second turbulence portions are arranged in the second flow channel.

In one possible design, the first flow disturbing part is a rib protruding along the inner wall of the plate body;

the first flow disturbing parts are arranged at intervals along the flowing direction of the airflow in the first flow channel.

In one possible design, the second flow disturbing part is a rib protruding along the surface of the plate body;

the second flow disturbing parts are arranged at intervals along the flowing direction of the airflow in the first flow channel.

In a possible design, the inner wall of the first flow channel is further provided with a plurality of grooves at intervals, and the grooves extend along the direction of the airflow flowing in the first flow channel.

In a possible design, the heat exchanger core further includes at least two connecting plates, and both ends of the plurality of plate bodies are fixedly connected to the two connecting plates, so as to form the second flow channel between the two connecting plates.

In one possible design, the connecting plate is provided with fixing portions, the fixing portions are arranged on the surface of the connecting plate at intervals, a containing cavity which is matched with the outline of the end portion of the connecting plate and penetrates through the connecting plate is formed in each fixing portion, and the end portion of the plate body is inserted into the containing cavity.

The application also provides a heat exchanger, the heat exchanger aforesaid the heat exchanger core.

The technical scheme provided by the application can achieve the following beneficial effects.

The first flow channel and the second flow channel are sequentially arranged and are arranged in a crossed mode, so that heat of airflow in the second flow channel is transferred to the airflow in the first flow channel, and heat in the airflow is transferred and recovered. The surface where the second flow channel is located is a concave-convex surface, the flowing amplitude of airflow in the second flow channel is increased, the turbulent flow heat exchange of the core body of the heat exchanger is realized, and the heat exchange effect is improved.

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 and an air heat exchanger provided herein in one embodiment;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic structural view of the plate body in fig. 1;

FIG. 4 is a schematic structural view of the connection plate of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 4 from another perspective;

FIG. 6 is a schematic structural view of a heat exchanger core provided herein in another embodiment;

fig. 7 is a schematic structural view of the plate body in fig. 6;

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 7 from another perspective;

FIG. 10 is a schematic view of the structure of FIG. 7 from another perspective;

FIG. 11 is a schematic structural view of a heat exchanger core provided herein in another embodiment;

FIG. 12 is an enlarged view of the portion B of FIG. 11;

fig. 13 is a schematic structural view of a plate body provided in the present application in one embodiment;

fig. 14 is an enlarged view of a portion C of fig. 13.

Reference numerals:

1-a heat exchanger core;

11-a plate body;

111-a first flow channel;

111 a-grooves;

112-a second flow channel;

113-a first spoiler;

114-a second spoiler;

115-a concave-convex surface;

12-a connecting plate;

121-a fixed part;

13-support plate.

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.

As shown in fig. 1 to 14, the present embodiment provides a heat exchanger, which includes a heat exchanger core 1, the heat exchanger core 1 includes a plurality of plate bodies 11, each plate body 11 is provided with a first flow channel 111, each layer of plate bodies 11 is stacked at intervals, so that a second flow channel 112 is formed between adjacent plate bodies 11, and the first flow channel 111 and the second flow channel 112 are arranged in a crossing manner; wherein, the surface of the plate body 11 close to the second flow channel 112 is a concave-convex surface 115.

In this embodiment, the first flow channel 111 and the second flow channel 112 of the heat exchanger core 1 may be used for exchanging indoor and outdoor air flows, that is, outdoor air flows to the indoor through the first flow channel 111, and indoor air flows to the outdoor through the second flow channel 112, because there is a temperature difference between the indoor and outdoor air flows, the first flow channel 111 and the second flow channel 112 are sequentially arranged and cross-disposed, so that heat of the air flow in the second flow channel 112 is transferred to the air flow in the first flow channel 111, and heat transfer and recovery in the air flow are achieved. The surface of the second flow channel 112 is a concave-convex surface 115, so that the flowing amplitude of the airflow in the second flow channel 112 is increased, the turbulent flow heat exchange of the heat exchanger core body 1 is realized, and the heat exchange effect is improved.

As shown in fig. 3, 7 and 13, a plurality of partition plates are disposed at intervals on the first flow channel 111 of each layer of plate body 11, the partition plates partition the first flow channel 111 into a plurality of sub-flow channels, and at least a portion of the sub-flow channels are protruded toward a side close to the second flow channel 112 to form a bevel, so as to form a concave-convex surface 115 on the plate body 11. In this embodiment, the first flow channel 111 is divided into a plurality of sub-flow channels by the partition board, and the sub-flow channels divide the airflow into a plurality of sub-airflows, so that the airflow in the first flow channel 111 can be fully contacted with the airflow in the second flow channel 112, and further more heat of the airflow in the second flow channel 112 is absorbed. One side of the sub-flow channel close to the second flow channel 112 is set to be a convex bevel structure, so that a concave surface is formed on the surface where the second flow channel of the plate body 11 is located, and the heat exchange effect of the second flow channel 112 is strengthened.

As shown in fig. 3, 4, 7, 10, 12 and 13, the shape of the surface on which the sub-flow channel is located is not limited to a triangle, a quadrangle, a pentagon or a hexagon. The first flow channels 111 of each layer of plate body 11 may be of the same shape, and may be of different shapes. As shown in fig. 12, the first flow channel 111 of the plate body 11 has different shapes, including two different shapes of pentagons.

Further, as shown in fig. 7 and 8, the plate body 11 is provided with a plurality of first spoiler portions 113, and the first spoiler portions 113 are disposed in the first flow channel 111. In this embodiment, the first spoiler 113 is added in the first flow channel 111 to increase the flow of the airflow in the first flow channel 111, so as to increase the heat absorption of the airflow, thereby increasing the temperature of the airflow and saving energy.

Wherein, the first spoiler portion 113 is a rib protruding along the inner wall of the plate body 11; the plurality of first spoiler portions 113 are arranged at intervals along a direction in which the air flows in the first flow channel 111. Make the air current form certain flow amplitude when flowing in first flow channel 111 through the rib to improve the vortex effect of plate body 11, and this rib still can strengthen the structural strength of plate body 11.

As shown in fig. 7 and 8, the plate body 11 is provided with a plurality of second spoiler portions 114, and the second spoiler portions 114 are disposed in the second flow channel 112. In this embodiment, the second spoiler 114 is added in the second flow channel 112 to increase the flow of the airflow in the second flow channel 112, so as to improve the heat transfer effect of the airflow and increase the heat exchange capability of the heat exchanger.

Wherein, the second spoiler portion 114 is a rib protruding along the surface of the plate body 11; the plurality of second spoiler portions 114 are arranged at intervals along the direction in which the air flows in the first flow channel 111. The ribs can increase the turbulence effect of the plate body 11 by forming a certain flow amplitude when the air flow flows in the second flow channel 112, and the ribs can also increase the structural strength of the plate body 11.

As shown in fig. 13 and 14, in one possible design, the inner wall of the first flow channel 111 is further provided with a plurality of grooves 111a at intervals, and the grooves 111a extend along the direction in which the airflow flows in the first flow channel 111. The space of the first flow channel 111 is enlarged by arranging the groove 111a, the air volume requirement of the airflow flowing through the first flow channel 111 is met, and the concave-convex surface is formed on the surface where the first flow channel 111 is located by arranging the groove 111a, so that the flowing of the airflow in the first flow channel 111 is further increased.

In this embodiment, the shape of the groove 111a is not limited, and may be rectangular, triangular, and the like.

As shown in fig. 1 and 2, in one possible design, the heat exchanger core 1 further includes at least two connecting plates 12, and both ends of the plurality of plate bodies 11 are fixedly connected to the two connecting plates 12 to form the second flow channel 112 between the two connecting plates 12. In this embodiment, two ends of the plate body 11 are fixedly connected with the two connecting plates 12, the connecting plates 12 support and connect each plate body 11, the second flow channel 112 is formed between the two connecting plates 12, the second flow channel 112 is located between each plate body 11, and the first flow channel 111 is located inside each plate body 11, so that the flow of the air flow in the first flow channel 111 and the flow of the air flow in the second flow channel 112 are not interfered with each other, and the risk of mixing the air in the two flow channels is reduced.

The plate body 11 and the connecting plate 12 may be fixedly connected by means of glue, welding, ultrasonic welding, etc.

Further, as shown in fig. 2 and 5, the connecting plate 12 is provided with fixing portions 121, the fixing portions 121 are disposed on the surface of the connecting plate 12 at intervals, the fixing portions 121 are formed with cavities matched with the end profiles of the connecting plate 12 and penetrating through the connecting plate 12, and the end portions of the plate bodies 11 are inserted into the cavities. In this embodiment, the fixing portion 121 is disposed corresponding to the plate body 11, at least a portion of the fixing portion 121 is close to the plate body 11 and is provided with a receiving cavity, an end portion of the plate body 11 is inserted into the receiving cavity, so that the plate body 11 is connected to the connecting plate 12, and the receiving cavity surrounds the end portion of the plate body 11, so as to seal a connection position of the plate body 11 and the connecting plate 12, and reduce a risk that a portion of the airflow in the first flow channel 111 leaks through the connection position of the plate body 11 and the connecting plate 12.

As shown in fig. 11, in a possible design, the heat exchanger core 1 further includes a support plate 13, the support plate 13 is located between the two connecting plates 12, the middle portion of the plate body 11 is disposed through the support plate 13, the support plate 13 supports the plate body 11, the pressure borne by the connecting plates 12 at the two ends is reduced, and the structure of the support plate 13 may be the same as that of the connecting plates 12.

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 (10)

1. A heat exchanger core, characterized in that the heat exchanger core (1) comprises:

the plate comprises a plurality of layers of plate bodies (11), wherein each layer of plate body (11) is provided with a first flow channel (111), each layer of plate body (11) is stacked at intervals, so that a second flow channel (112) is formed between the adjacent plate bodies (11), and the first flow channels (111) and the second flow channels (112) are arranged in a crossed manner;

the surface of the plate body (11) close to one side of the second flow passage (112) is a concave-convex surface (115).

2. The heat exchanger core according to claim 1, wherein the first flow channel (111) of each layer of the plate body (11) is provided with a plurality of partition plates at intervals, the partition plates divide the first flow channel (111) into a plurality of sub-flow channels, and at least parts of the sub-flow channels are protruded towards one side close to the second flow channel (112) to form a bevel angle, so that the concave-convex surface (115) is formed on the plate body (11).

3. The heat exchanger core as claimed in claim 1, wherein the plate body (11) is provided with a plurality of first flow perturbation portions (113), the first flow perturbation portions (113) being provided in the first flow channel (111).

4. The heat exchanger core as claimed in claim 1, wherein the plate body (11) is provided with a plurality of second flow perturbation portions (114), the second flow perturbation portions (114) being provided in the second flow channel (112).

5. The heat exchanger core as claimed in claim 3, wherein the first turbulators (113) are ribs protruding along the inner wall of the plate body (11);

the first flow disturbing parts (113) are arranged at intervals along the flowing direction of the airflow in the first flow channel (111).

6. The heat exchanger core according to claim 4, wherein the second flow perturbation (114) is a rib protruding along a surface of the plate body (11);

the second flow disturbing parts (113) are arranged at intervals along the flowing direction of the airflow in the first flow channel (111).

7. The heat exchanger core according to any one of claims 1 to 6, wherein the inner wall of the first flow channel (111) is further provided with a plurality of grooves (111a) at intervals, and the grooves (111a) extend along the direction of the air flow flowing in the first flow channel (111).

8. The heat exchanger core according to any one of claims 1 to 6, wherein the heat exchanger core (1) further comprises at least two connecting plates (12), wherein both ends of the plurality of plate bodies (11) are fixedly connected with the two connecting plates (12) to form the second flow channel (112) between the two connecting plates (12).

9. The heat exchanger core as claimed in claim 8, wherein the connecting plate (12) is provided with fixing portions (121), the fixing portions (121) are arranged on the surface of the connecting plate (12) at intervals, the fixing portions (121) are formed with cavities which match the contour of the end portions of the connecting plate (12) and penetrate through the connecting plate (12), and the end portions of the plate bodies (11) are inserted into the cavities.

10. A heat exchanger, characterized in that it comprises a heat exchanger core (1) according to any one of claims 1 to 9.

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