Heat exchanger with high heat exchange area utilization rate

Abstract

The utility model provides a heat exchanger with a high heat exchange area utilization rate, and relates to the field of heat exchangers. The first medium layer and the second medium layer of the heat exchange core body are respectively provided with a direct flow area and two flow guide areas; the liquid inlet of the direct flow area is larger than that of the diversion area; the liquid outlet section of the direct flow area is larger than that of the diversion area; the fins comprise direct current fins and flow guide fins; direct current fins are arranged in the direct current area; flow guide fins are arranged in the flow guide area; the direct-flow fins can guide liquid from the direct-flow area inlet to the direct-flow area outlet; and the flow guide fins can guide a medium flowing between the sealing head and the direct flow area in a specified direction. According to the heat exchanger with the high heat exchange area utilization rate, the problem that in the prior art, the heat exchange area utilization rate of a heat exchanger is low is solved, and the heat exchange area utilization rate of the heat exchanger can be increased.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a heat exchanger with high utilization rate of heat exchange area. Background Art

[0002] Flow dead zones are common problems in plate-fin heat exchangers. The existence of flow dead zones will lead to waste of the heat dissipation area in the heat exchanger.

[0003] In the prior art, for example, an inlet and outlet flow guiding structure applicable to a plate-fin heat exchanger of an aeroengine disclosed in Chinese Patent Application No. 202310985647.3 can reduce flow dead zones, thereby improving the utilization rate of the heat dissipation area of the heat exchanger.

[0004] However, the structure of the above comparative document cannot achieve the flow guiding for simultaneously setting two medium inlets or outlets on one side of the heat exchanger. For example, the arrangement of the cold and hot fluid inlets and outlets in a three-dimensional staggered swirl structure printed circuit board type heat exchanger disclosed in Chinese Patent Application No. 201811303370.7. Directly applying the structure of an inlet and outlet flow guiding structure applicable to a plate-fin heat exchanger of an aeroengine cannot eliminate flow dead zones. As Figure 1 and Figure 2 shown, when a first medium inlet 01 and a second medium outlet 04 are set on the same side, and a first medium outlet 02 and a second medium inlet 03 are set on the opposite side, whether it is the first medium layer (such as Figure 1 ), the first medium flows in from the first medium inlet 01 and flows out from the first medium outlet 02, or the second medium layer (such as Figure 2 ), the second medium flows in from the second medium inlet 03 and flows out from the second medium outlet 04, flow dead zones 05 will appear. At the flow dead zones 05, the flow velocity of the medium is slow and the flow rate is low, so the heat exchange efficiency is low, and thus the heat exchange area is wasted. Summary of the Utility Model

[0005] In view of the above technical problems, the heat exchanger with high utilization rate of heat exchange area provided by the utility model can improve the utilization rate of the heat exchange area of the heat exchanger.

[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0007] The heat exchanger with high utilization rate of heat exchange area provided by the utility model comprises a square heat exchange core body, a first medium inlet head, a first medium outlet head, a second medium inlet head and a second medium outlet head; the first medium inlet head and the second medium outlet head are arranged on the left side of the heat exchange core body, and the second medium inlet head and the first medium outlet head are arranged on the right side of the heat exchange core body; the heat exchange core body comprises a plurality of partition plates, a plurality of fins and a plurality of sealing strips; the partition plates and the fins are arranged at intervals; the sealing strips are hermetically fixed between adjacent partition plates; the two sides of the partition plates are respectively a first medium layer and a second medium layer; the first medium layer is only communicated with the first medium inlet head and the first medium outlet head; the second medium layer is only communicated with the second medium inlet head and the second medium outlet head; a direct current area and two diversion areas are respectively arranged in the first medium layer and the second medium layer of the heat exchange core body; the liquid inlet of the direct current area is larger than that of the diversion area; the liquid outlet section of the direct current area is larger than that of the diversion area; the fins comprise direct current fins and diversion fins; the direct current fins are arranged at the direct current area; the diversion fins are arranged at the diversion area; the direct current fins can divert the liquid from the inlet of the direct current area to the outlet of the direct current area; the diversion fins in the first medium layer can divert the liquid of the first medium inlet head to the direct current area; the diversion fins in the first medium layer can divert the liquid in the direct current area of the first medium layer to the first medium outlet head; the diversion fins in the second medium layer can divert the liquid of the second medium inlet head to the direct current area; the diversion fins in the second medium layer can divert the liquid in the direct current area of the second medium layer to the second medium outlet head.

[0008] The heat exchanger with high utilization rate of heat exchange area provided by the utility model preferably includes a first transverse flow guiding fin, an inclined flow guiding fin, a vertical flow guiding fin and a second transverse flow guiding fin; the first transverse flow guiding fin forms a number of transverse first flow guiding channels; the inclined flow guiding fin forms a number of inclined second flow guiding channels; the vertical flow guiding fin forms a number of vertical third flow guiding channels; the second transverse flow guiding fin forms a number of transverse fourth flow guiding channels; the first medium inlet head, the first medium outlet head, the second medium inlet head and the second medium outlet head are respectively communicated with a number of the first flow guiding channels; the first medium flows from the first medium inlet head to the direction of the direct current area, and the second medium flows from the second medium inlet head to the direction of the direct current area. The outlet of the first flow guiding channel is communicated with the inlet of the second flow guiding channel; part of the outlets of the second flow guiding channels are communicated with the direct current area, and the rest are communicated with the inlets of the third flow guiding channels; the outlet of the third flow guiding channel is communicated with the inlet of the fourth flow guiding channel; the fourth flow guiding channel is communicated with the direct current area; the first medium flows from the direct current area to the direction of the first medium outlet head, and the second medium flows from the direct current area to the direction of the second medium outlet head. The direct current area is communicated with the inlets of the fourth flow guiding channel and part of the second flow guiding channels; the outlet of the fourth flow guiding channel is communicated with the inlet of the third flow guiding channel; the outlet of the third flow guiding channel is communicated with the inlets of part of the second flow guiding channels; the outlet of the second flow guiding channel is communicated with the outlet of the first flow guiding channel.

[0009] The above technical solution has the following advantages or beneficial effects:

[0010] The utility model provides a heat exchanger with a high utilization rate of heat exchange area, which relates to the field of heat exchangers and includes a square heat exchange core, a first medium inlet head, a first medium outlet head, a second medium inlet head, and a second medium outlet head. The first medium inlet head and the second medium outlet head are arranged on the left side of the heat exchange core, and the second medium inlet head and the first medium outlet head are arranged on the right side of the heat exchange core. The heat exchange core includes a plurality of partitions, a plurality of fins, and a plurality of seals. The partitions and the fins are arranged at intervals. The seals are hermetically fixed between adjacent partitions. The two sides of the partition are respectively a first medium layer and a second medium layer. The first medium layer is only communicated with the first medium inlet head and the first medium outlet head. The second medium layer is only communicated with the second medium inlet head and the second medium outlet head. The first medium layer and the second medium layer of the heat exchange core are respectively provided with a direct current area and two diversion areas. The liquid inlet of the direct current area is larger than the liquid inlet of the diversion area. The liquid outlet section of the direct current area is larger than the liquid outlet of the diversion area. The fins include direct current fins and diversion fins. The direct current fins are arranged at the direct current area. The diversion fins are arranged at the diversion area. The direct current fins can divert the liquid from the inlet of the direct current area to the outlet of the direct current area. The diversion fins in the first medium layer can divert the liquid from the first medium inlet head to the direct current area. The diversion fins in the first medium layer can divert the liquid in the direct current area of the first medium layer to the first medium outlet head. The diversion fins in the second medium layer can divert the liquid from the second medium inlet head to the direct current area. The diversion fins in the second medium layer can divert the liquid in the direct current area of the second medium layer to the second medium outlet head. The heat exchanger with a high utilization rate of heat exchange area provided by the utility model solves the problem of low utilization rate of heat exchange area in the prior art and can improve the utilization rate of heat exchange area of the heat exchanger. Description of the Drawings

[0011] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, the present utility model and its features, shape, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the focus is on showing the gist of the present utility model.

[0012] Figure 1 It is a schematic diagram of the flow dead zone of the prior art first medium layer in the background art provided by Embodiment 1 of the present utility model.

[0013] Figure 2 It is a schematic diagram of the flow dead zone of the prior art second medium layer in the background art provided by Embodiment 1 of the present utility model.

[0014] Figure 3It is a schematic structural diagram of the first medium layer of a heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model.

[0015] Figure 4 It is a schematic structural diagram of the second medium layer of a heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model.

[0016] Figure 5 It is a schematic structural diagram of the heat exchange core of a heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model.

[0017] Figure 6 It is a schematic partial structural diagram of the first medium layer of a heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model. Detailed implementation manners

[0018] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should be noted that the terms used in the present utility model are only for describing specific implementation manners, rather than intending to limit the exemplary implementation manners according to the present application.

[0019] The following describes the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Therefore, the detailed description of the embodiments of the present utility model provided in the following drawings is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts belong to the protection scope of the present utility model.

[0020] Embodiment 1:

[0021] The heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model, such as Figures 1 to 6As shown in the figure, it includes a square heat exchange core 1, a first medium inlet head 2, a first medium outlet head 3, a second medium inlet head 4 and a second medium outlet head 5; the first medium inlet head 2 and the second medium outlet head 5 are arranged on the left side of the heat exchange core 1, and the second medium inlet head 4 and the first medium outlet head 3 are arranged on the right side of the heat exchange core 1; the heat exchange core 1 includes a number of partitions 111, a number of fins 6 and a number of seals 112; the partitions 111 and the fins are arranged at intervals; the seals 112 are hermetically fixed between adjacent partitions 111; both sides of the partition 111 are the first medium layer and the second medium layer respectively; the first medium layer is only communicated with the first medium inlet head 2 and the first medium outlet head 3; the second medium layer is only communicated with the second medium inlet head 4 and the second medium outlet head 5; the first medium layer and the second medium layer of the heat exchange core 1 are respectively provided with a direct current area 11 and two diversion areas 12; the liquid inlet of the direct current area 11 is larger than the liquid inlet of the diversion area 12; the fins 6 include direct current fins 61 and diversion fins 62; the direct current fins 61 are arranged at the direct current area 11; the diversion fins 62 are arranged at the diversion area 12; the direct current fins 61 can divert the liquid from the inlet of the direct current area 11 to the outlet of the direct current area 11; the diversion fins 62 in the first medium layer can divert the liquid from the first medium inlet head 2 to the direct current area 11; the diversion fins 62 in the first medium layer can divert the liquid in the direct current area 11 in the first medium layer to the first medium outlet head 3; the diversion fins 62 in the second medium layer can divert the liquid from the second medium inlet head 4 to the direct current area 11; the diversion fins 62 in the second medium layer can divert the liquid in the direct current area 11 in the second medium layer to the second medium outlet head 5.

[0022] When the heat exchanger with high heat exchange area utilization rate provided in Embodiment 1 of the present utility model works, the first medium enters the heat exchanger core 1 from the first medium inlet head 2, and first, the first medium is diverted by the diversion area 12, and then the first medium flows to the direct current area 11 of the first medium layer. At the direct current area 11, the direct current fins 61 can divert the first medium from the inlet of the direct current area 11 to the outlet of the direct current area 11, and then the first medium is diverted to the first medium outlet head 3 through the diversion area 12. Since at the intersection of the first medium inlet head 2 and the diversion area 12, the first medium is guided by the diversion area 12 to flow through multiple different channels (formed by the diversion fins 62. The direct current fins 61 and the diversion fins 62 are both fins, and fins are common structures in heat exchangers. Fins can form diversion channels, and the specific shape and structure of the fins belong to the prior art and will not be elaborated here), so that part of the first medium can pass through the first medium flow dead zone of a conventional square heat exchanger (such as Figure 1 and 2It is shown in the figure that the area where the first medium would not flow originally now has the first medium flowing through it, so that heat exchange is completed between the first medium and the second medium of the second medium layer at the partition 111. Similarly, after the second medium enters the heat exchange core 1 from the second medium inlet head 4, it is first guided by the guiding area 12, then the second medium flows through the direct current area 11 of the second medium layer, and then is guided by the guiding area 12 to the second medium outlet head 5, so that the second medium can pass through the dead zone of the second medium flow in a conventional square heat exchanger. Thus, the first medium and the second medium can flow a longer distance in the first medium layer and the second medium layer respectively, improving the utilization rate of the heat exchange surface. The guiding method of the guiding area 12 is composed of a number of equally spaced guiding fins 62. The guiding fins 62 divide the first medium and the second medium, and the gaps between the guiding fins 62 form flow channels to guide the first medium and the second medium.

[0023] Compared with the heat exchanger without the guiding area 12 in the prior art, this embodiment can guide the flow path of the medium from the head to the medium layer, thus efficiently utilizing the heat exchange area of the heat exchanger. For some equipment that needs to reduce the size of the heat exchanger, a heat exchanger of the same size can achieve a more efficient heat exchange effect.

[0024] The heat exchanger with high utilization rate of heat exchange area provided in Embodiment 1 of the present utility model solves the problem of low utilization rate of the heat exchange area of the heat exchanger in the prior art and can improve the utilization rate of the heat exchange area of the heat exchanger.

[0025] To specifically implement the guiding effect of the guiding area 12 on the medium, in this embodiment, the guiding fins 62 include a first horizontal guiding fin 621, an inclined guiding fin 622, a vertical guiding fin 623, and a second horizontal guiding fin 624; the first horizontal guiding fin 621 forms a number of horizontal first guiding channels 71; the inclined guiding fin 622 forms a number of inclined second guiding channels 72; the vertical guiding fin 623 forms a number of vertical third guiding channels 73; the second horizontal guiding fin 624 forms a number of horizontal fourth guiding channels 74; the first medium inlet head 2, the first medium outlet head 3, the second medium inlet head 4, and the second medium outlet head 5 are respectively connected to a number of first guiding channels 71; the first medium flows from the first medium inlet head 2 through the guiding area to the direction of the direct current area 11, and the second medium flows from the second medium inlet head 4 through the guiding area to the direction of the direct current area 11. The outlet of the first guiding channel 71 is connected to the inlet of the second guiding channel 72; a part of the outlet of the second guiding channel 72 is connected to the direct current area 11, and the rest is connected to the inlet of the third guiding channel 73; the outlet of the third guiding channel 73 is connected to the inlet of the fourth guiding channel 74; the fourth guiding channel 74 is connected to the direct current area 11; the first medium flows from the direct current area 11 through the guiding area to the direction of the first medium outlet head 3, and the second medium flows from the direct current area 11 through the guiding area to the direction of the second medium outlet head 5. The direct current area 11 is connected to the inlet of the fourth guiding channel 74 and the inlet of a part of the second guiding channel 72; the outlet of the fourth guiding channel 72 is connected to the inlet of the third guiding channel 73; the outlet of the third guiding channel 73 is connected to the inlet of a part of the second guiding channel 72; the outlet of the second guiding channel 72 is connected to the outlet of the first guiding channel 71.In a conventional square heat exchanger, after the medium enters the heat exchange core from the inlet head, the medium will seek the shortest distance to reach the outlet head on the other side of the heat exchange core, resulting in flow dead zones. In this embodiment, guide fins 62 are adopted. During the process that the first medium flows from the first medium inlet head 2, through the inlet diversion area, and finally enters the direct flow area 11, and during the process that the second medium flows from the second medium inlet head 4, through the inlet diversion area, and finally enters the direct flow area 11, the first transverse guide fins 621 are used to divert the medium to different first diversion channels 71. The first diversion channels 71 divert the first medium / second medium. Part of the first medium / second medium will directly flow into the direct flow area 11, and part will enter the direct flow area 11 after passing through the vertical third diversion channel 73 and the horizontal fourth diversion channel 74, so that part of the first medium / second medium must pass through a longer path, that is, the original flow dead zone (the area diverted by the third diversion channel 73 and the fourth diversion channel 74); during the process that the first medium flows from the direct flow area 11 through the outlet diversion area and finally flows to the first medium outlet head 3, and during the process that the second medium flows from the direct flow area 11 through the outlet diversion area and finally flows to the second medium outlet head 5, the second transverse guide fins 624 and the inclined guide fins 622 are used to collect the first medium / second medium at the outlet of the direct flow area 11. After the first medium / second medium enters the second diversion channel 72 (formed by the inclined guide fins 622), it will directly enter the first diversion channel and flow to the first diversion channel 71, and finally flow to the first medium outlet head 3 or the second medium outlet head 5; after the first medium / second medium enters the fourth diversion channel 74, it will first pass through the third diversion channel 73, then enter the second diversion channel 72, and finally flow to the outlet of the first diversion channel 71, so that part of the first medium / second medium must pass through a longer path when leaving the heat exchange core 1, that is, the original flow dead zone (the area diverted by the third diversion channel 73 and the fourth diversion channel 74).

[0026] In summary, it includes a square heat exchange core, a first medium inlet head, a first medium outlet head, a second medium inlet head, and a second medium outlet head; the first medium inlet head and the second medium outlet head are arranged on the left side of the heat exchange core, and the second medium inlet head and the first medium outlet head are arranged on the right side of the heat exchange core; the heat exchange core includes a number of partitions, a number of fins, and a number of seals; the partitions and the fins are arranged at intervals; the seals are hermetically fixed between adjacent partitions; on both sides of the partition are a first medium layer and a second medium layer respectively; the first medium layer is only communicated with the first medium inlet head and the first medium outlet head; the second medium layer is only communicated with the second medium inlet head and the second medium outlet head; a direct current area and two diversion areas are respectively arranged in the first medium layer and the second medium layer of the heat exchange core; the liquid inlet of the direct current area is larger than the liquid inlet of the diversion area; the liquid outlet cross-section of the direct current area is larger than the liquid outlet of the diversion area; the fins include direct current fins and diversion fins; the direct current fins are arranged at the direct current area; the diversion fins are arranged at the diversion area; the direct current fins can divert the liquid from the direct current area inlet to the direct current area outlet; the diversion fins in the first medium layer can divert the liquid of the first medium inlet head to the direct current area; the diversion fins in the first medium layer can divert the liquid in the direct current area of the first medium layer to the first medium outlet head; the diversion fins in the second medium layer can divert the liquid of the second medium inlet head to the direct current area; the diversion fins in the second medium layer can divert the liquid in the direct current area of the second medium layer to the second medium outlet head. The heat exchanger with high heat exchange area utilization rate provided by the present invention solves the problem of low heat exchange area utilization rate of the heat exchanger in the prior art and can improve the heat exchange area utilization rate of the heat exchanger.

[0027] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A heat exchanger with a high utilization rate of heat exchange area, comprising a square heat exchange core, a first medium inlet head, a first medium outlet head, a second medium inlet head, and a second medium outlet head; the first medium inlet head and the second medium outlet head are arranged on the left side of the heat exchange core, and the second medium inlet head and the first medium outlet head are arranged on the right side of the heat exchange core; the heat exchange core includes a plurality of partition plates, a plurality of fins, and a plurality of seals; the partition plates and the fins are arranged at intervals; the seals are hermetically fixed between adjacent partition plates; on both sides of the partition plates are a first medium layer and a second medium layer; The first medium layer is only communicated with the first medium inlet head and the first medium outlet head; the second medium layer is only communicated with the second medium inlet head and the second medium outlet head; It is characterized in that a direct current area and two diversion areas are respectively arranged in the first medium layer and the second medium layer of the heat exchange core; the liquid inlet of the direct current area is larger than the liquid inlet of the diversion area; the liquid outlet cross-section of the direct current area is larger than the liquid outlet of the diversion area; The fins include direct current fins and diversion fins; the direct current fins are arranged at the direct current area; the diversion fins are arranged at the diversion area; The direct current fins can divert the liquid from the direct current area inlet to the direct current area outlet; The diversion fins in the first medium layer can divert the liquid of the first medium inlet head to the direct current area; The diversion fins in the first medium layer can divert the liquid in the direct current area of the first medium layer to the first medium outlet head; The diversion fins in the second medium layer can divert the liquid of the second medium inlet head to the direct current area; The diversion fins in the second medium layer can divert the liquid in the direct current area of the second medium layer to the second medium outlet head.

2. The heat exchanger with a high utilization rate of heat exchange area as described in claim 1, wherein The diversion fins include first transverse diversion fins, inclined diversion fins, vertical diversion fins and second transverse diversion fins; The first transverse diversion fins form a number of transverse first diversion channels; the inclined diversion fins form a number of inclined second diversion channels; the vertical diversion fins form a number of vertical third diversion channels; the second transverse diversion fins form a number of transverse fourth diversion channels; The first medium inlet head, the first medium outlet head, the second medium inlet head and the second medium outlet head are respectively communicated with a number of the first diversion channels; The first medium flows from the first medium inlet head through the diversion area to the direct current area direction, and the second medium flows from the second medium inlet head through the diversion area to the direct current area direction. The outlet of the first diversion channel is communicated with the inlet of the second diversion channel; part of the outlets of the second diversion channels are communicated with the direct current area, and the rest are communicated with the inlets of the third diversion channels; the outlet of the third diversion channel is communicated with the inlet of the fourth diversion channel; the fourth diversion channel is communicated with the direct current area; The first medium flows from the direct current area through the diversion area to the first medium outlet head direction, and the second medium flows from the direct current area through the diversion area to the second medium outlet head direction. The direct current area is communicated with the inlets of the fourth diversion channel and part of the second diversion channels; the outlet of the fourth diversion channel is communicated with the inlet of the third diversion channel; the outlet of the third diversion channel is communicated with the inlets of part of the second diversion channels; the outlet of the second diversion channel is communicated with the outlet of the first diversion channel.

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