Multidirectional heat exchange core, flow channel mechanism and preparation method of flow channel mechanism

Abstract

The invention discloses a multidirectional heat exchange core, a flow channel mechanism and a preparation method of the multidirectional heat exchange core, the multidirectional heat exchange core comprises a plate-shaped body, a plurality of channel holes are formed in the body, each channel hole is composed of a communicating hole and four sets of flow channel through holes, and the communicating holes communicate with the four sets of flow channel through holes; the flow channel through holes in the body are distributed in an array with the line spacing and the column spacing being preset distances. On the premise of not influencing the structural strength of the heat exchange main body, the multidirectional heat exchange core not only adapts to multi-scheme flow channels and working condition requirements, but also adapts to a mainstream heat exchanger processing technology and reduces the batch production cost; according to the invention, the pressure drop of the system is effectively reduced while the heat exchange performance which is the same as or even better than that of a traditional runner in a mainstream process is achieved; the invention has the advantages of compact structure, unitized design and easy maintenance, and is suitable for various industrial application scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a multi-directional heat exchange core, a flow channel mechanism and a preparation method thereof. Background Art

[0002] Traditional heat exchangers usually adopt fixed flow channels formed by CNC machining. Their performance often shows good performance in a single and straight direction, but poor performance in fluid pressure drop and large-angle directional flow.

[0003] In view of the above problems, it is necessary to propose a heat exchange core and a flow channel solution with reasonable design, effective solution to the above problems and strong scheme adaptability. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a multi-directional heat exchange core, a flow channel mechanism and a preparation method thereof to adapt to multi-scheme flow channels and working conditions requirements and improve heat exchange performance.

[0005] To solve the above technical problem, the embodiments of the present invention propose a multi-directional heat exchange core, including a plate-shaped body. A plurality of channel holes are provided on the body. The channel holes are composed of communication holes and 4 groups of flow channel through holes, and the communication holes connect the 4 groups of flow channel through holes; the flow channel through holes on the body are arranged in an array with a row pitch and a column pitch both being a preset distance.

[0006] Further, the channel holes are in an X shape, a quasi-X shape, a plum blossom shape or a snowflake shape.

[0007] Correspondingly, the embodiments of the present invention also provide a flow channel mechanism, which is formed by stacking multiple layers of the above multi-directional heat exchange cores in sequence, and the channel holes of the multi-directional heat exchange cores in adjacent layers are staggered by a preset distance left and right and / or front and back.

[0008] Further, the flow channel mechanism includes one or more non-flow-through sides, and the multi-directional heat exchange cores in multiple layers of the flow channel mechanism are aligned and sealed on the non-flow-through sides.

[0009] Further, two opposite sides of the flow channel mechanism are non-flow-through sides, and the channel holes of the multi-directional heat exchange cores in multiple layers of the flow channel mechanism sequentially form a single-in and single-out radial flow channel.

[0010] Further, two adjacent sides of the flow channel mechanism are non-flow-through sides, and the channel holes of the multi-directional heat exchange cores in multiple layers of the flow channel mechanism sequentially form a single-in and single-out variable-direction flow channel.

[0011] Further, one side of the flow channel mechanism is a non-flow-through side, and the channel holes of the multi-directional heat exchange cores in multiple layers of the flow channel mechanism sequentially form a single-in and multi-out or multi-in and single-out variable-direction flow channel.

[0012] Correspondingly, the embodiments of the present invention also provide a preparation method of a flow channel mechanism, including: Step 1: Prepare multiple multi-directional heat exchange cores as described above; Step 2: Cut the multi-directional heat exchange cores according to the size and flow channel direction of the required flow channel mechanism; Step 3: Stack multiple multi-directional heat exchange cores according to the flow channel direction of the required flow channel mechanism to obtain multiple layers of multi-directional heat exchange cores; Step 4: Weld and seal the multiple layers of multi-directional heat exchange cores according to the flow channel direction of the required flow channel mechanism to obtain a flow direction mechanism.

[0013] The beneficial effects of the present invention are as follows: The present invention can be designed according to temperature, pressure drop, heat exchange space and heat exchange direction and can meet the control requirements by adjusting the thickness, hole size and flow channel size of a single-layer heat exchange core. The multi-directional heat exchange core of the present invention can not only adapt to the requirements of multiple flow channel and working conditions, but also adapt to the mainstream heat exchanger processing technology and reduce the batch production cost without affecting the strength of the main heat exchange structure; while achieving the same or even better heat exchange performance as the traditional flow channel under the mainstream process, the present invention effectively reduces the pressure drop of the system; the structure of the present invention is compact, with unitized design, easy to maintain, and applicable to a variety of industrial application scenarios. Description of the Drawings

[0014] Figure 1 is a three-dimensional structure diagram of the multi-directional heat exchange core of the embodiment of the present invention.

[0015] Figure 2 is the front view of the multi-directional heat exchange core of Embodiment 1 of the present invention.

[0016] Figure 3 is Figure 2 the enlarged view of part A in

[0017] Figure 4 is the structural schematic diagram of the channel hole of Embodiment 2 of the present invention.

[0018] Figure 5 is the structural schematic diagram of the channel hole of Embodiment 3 of the present invention.

[0019] Figure 6 is a three-dimensional structure diagram of the flow channel mechanism of Embodiment 4 of the present invention from one angle.

[0020] Figure 7 is a three-dimensional structure diagram of the flow channel mechanism of Embodiment 4 of the present invention from another angle.

[0021] Figure 8 is a three-dimensional structure diagram of the flow channel mechanism of Embodiment 5 of the present invention from one angle.

[0022] Figure 9 is a three-dimensional structure diagram of the flow channel mechanism of Embodiment 5 of the present invention from another angle.

[0023] Figure 10It is a three-dimensional structure diagram of the flow channel mechanism according to Embodiment 6 of the present invention from one angle.

[0024] Figure 11 It is a three-dimensional structure diagram of the flow channel mechanism according to Embodiment 6 of the present invention from another angle.

[0025] Explanation of the reference numerals in the drawings Multi-directional heat exchange core 100, flow channel through holes 101, communication holes 102, channel holes 110, non-flow side 120, positioning holes 130. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0027] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back...), they are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, in the present invention, the descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0029] Please refer to Figures 1 to 3 , the multi-directional heat exchange core of the embodiment of the present invention includes a plate-shaped body, and a plurality of channel holes are uniformly arranged on the body, and the channel holes are arranged in an array with a row pitch and a column pitch both being a preset distance.

[0030] The channel hole is composed of a communication hole and 4 flow channel through holes. The 4 groups of flow channel through holes of the channel hole are adjacent to each other at a preset distance (that is, the 4 flow channel through holes are distributed at the four corners of a square with a side length of a preset distance, the centers of the adjacent 2 flow channel through holes of the channel hole are spaced at a preset distance, and the centers of the corresponding adjacent flow channel through holes of the adjacent channel holes are spaced at a preset distance). The communication hole communicates the 4 groups of flow channel through holes. The multi-directional heat exchange core is prepared by using a single-layer stamping and cutting and easy-to-weld process material.

[0031] Embodiment 1, as Figure 2 and Figure 3As shown, the channel holes are in an X shape, a quasi-X shape, a plum blossom shape, or a snowflake shape. In this embodiment, the flow channel through holes are the parts at the four corners of the X shape, and the communication holes are the small X part in the middle. When forming the flow channel mechanism, the flow channel through holes (i.e., the parts at the four corners of the X shape) of the channel holes of the multi-directional heat exchange cores in adjacent layers are connected in sequence to form a through hole (circular) that is communicated between the upper and lower layers. The four corners of the channel holes are preferably semi-circular, that is, the outer periphery of the four corners of the X shape is preferably semi-circular (the flow channel through holes are circular holes).

[0032] Embodiment 2, as Figure 4 shown, the channel holes are in a plum blossom shape.

[0033] Embodiment 3, as Figure 5 shown, the channel holes are in a quasi-X shape.

[0034] Please refer to Figures 6 to 11 , the flow channel mechanism of the embodiment of the present invention is formed by stacking multiple multi-directional heat exchange cores in sequence. The channel holes of the multi-directional heat exchange cores in adjacent layers are staggered left and right and / or front and back by a preset distance, so that the multiple channel holes of the multi-directional heat exchange cores in adjacent layers are connected end to end in sequence, that is, the flow channel through holes of the channel holes of one layer of the multi-directional heat exchange core overlap with the corresponding 2 or 4 channel holes of the adjacent layer of the multi-directional heat exchange core to form a channel (a channel that is communicated up and down). That is, when staggered left and right, the channel holes of one layer of the multi-directional heat exchange core overlap with the channel holes on the left and right sides of the adjacent layer of the multi-directional heat exchange core to form a flow channel; when staggered front and back, the channel holes of one layer of the multi-directional heat exchange core overlap with the channel holes on the front and back sides of the adjacent layer of the multi-directional heat exchange core; when staggered front, back, left, and right, the 4 flow channel through holes of the channel holes of one layer of the multi-directional heat exchange core respectively overlap with the channel holes on the front, back, left, and right of the adjacent layer of the multi-directional heat exchange core.

[0035] As an implementation manner, a plurality of positioning holes are provided on the flow channel mechanism. The positioning holes facilitate the precise stacking of multiple multi-directional heat exchange cores. The positions of the positioning holes on each layer of the multi-directional heat exchange core of the flow channel mechanism are kept consistent.

[0036] As an implementation manner, the flow channel mechanism includes one or more non-flow-through sides, and the multi-layer multi-directional heat exchange cores of the flow channel mechanism are aligned and sealed on the non-flow-through sides.

[0037] Embodiment 4, as Figure 6 and Figure 7 shown, the two pairs of sides of the flow channel mechanism are non-flow-through sides, and the channel holes of the multi-layer multi-directional heat exchange cores of the flow channel mechanism form a single-in and single-out radial flow channel in sequence.

[0038] The flow channel mechanism of the embodiment of the present invention is formed by sequentially stacking multi-layer and multi-direction heat exchange cores after cutting. The cut multi-layer heat exchange cores are aligned and sealed on the non-flow side. Each layer of the multi-direction heat exchange core of the flow channel mechanism is provided with a plurality of channel holes along the first direction. The channel holes of each layer of the multi-direction heat exchange core are connected end to end through flow channel through holes to construct a plurality of flow channels in the second direction. The scales of the channel holes and the flow channel through holes in the first direction and the second direction can be designed according to temperature, pressure drop, total channel scale and total channel direction, and the control requirements can be realized by adjusting the thickness of a single-layer heat exchange core, the flow channel through hole and the flow channel size. The single-in and single-out radial flow channel mechanism of the present invention is fixed and positioned with the flow channel by the positioning pin through the positioning hole. The one-time or multiple forming processes of the whole flow channel mechanism include but are not limited to the diffusion welding process.

[0039] Embodiment 5, as Figure 8 and Figure 9 shown, the two adjacent sides of the flow channel mechanism are non-flow sides, and the channel holes of the multi-layer and multi-direction heat exchange cores of the flow channel mechanism sequentially form a single-in and single-out variable-direction flow channel.

[0040] The flow channel mechanism of the embodiment of the present invention is formed by sequentially stacking multi-layer and multi-direction heat exchange cores after cutting. The cut multi-layer heat exchange cores are aligned and sealed on the non-flow side. Each layer of the multi-direction heat exchange core of the flow channel mechanism is provided with a plurality of flow channels in the second direction by connecting the channel holes end to end through flow channel through holes. The sizes of the flow channels in the first direction and the second direction can be designed according to temperature, pressure drop, total channel scale and total channel direction, and the control requirements can be realized by adjusting the thickness of a single-layer multi-direction heat exchange core and the channel hole size. The flow channel mechanism is fixed for the multi-layer heat exchange core by the positioning pin through the positioning hole. The flow channel mechanism adopts an overall one-time or multiple forming process including but not limited to the diffusion welding process.

[0041] Embodiment 6, as Figure 10 and Figure 11 shown, one side of the flow channel mechanism is a non-flow side, and the channel holes of the multi-layer and multi-direction heat exchange cores of the flow channel mechanism sequentially form a single-in and multi-out or multi-in and single-out variable-direction flow channel.

[0042] The flow channel mechanism of the embodiment of the present invention is formed by sequentially stacking multi-layer and multi-direction heat exchange cores after cutting. The cut multi-layer heat exchange cores are aligned and sealed on the non-flow side. Each layer of the multi-direction heat exchange core of the flow channel mechanism is provided with a plurality of channel holes along the first direction. The channel holes of each layer of the multi-direction heat exchange core are connected end to end through flow channel through holes to construct a plurality of flow channels in the second direction. The scales of the flow channels in the first direction and the second direction can be designed according to temperature, pressure drop, total channel scale and total channel direction, and the control requirements can be realized by adjusting the thickness of a single-layer heat exchange core, the size of the channel holes and the size of the flow channel through holes. The flow channel mechanism of the embodiment of the present invention is fixed by positioning hole pins, and the flow channel mechanism adopts an integral one-time or multiple forming process including but not limited to diffusion welding process.

[0043] During specific implementation, when the pressure drop margin of the fluid in this section of the watershed is relatively abundant, on the one hand, the total heat exchange area of a single layer can be increased by reducing the opening size design of the channel holes in each layer and the size of the flow channel through holes. On the other hand, taking Embodiment 4 as an example, more layers of thinner multi-direction heat exchange cores can be stacked according to the height of the watershed space to increase the length of the flow path in the second direction and increase the total heat exchange efficiency. The above application methods for increasing heat exchange performance include but are not limited to the flow channel mechanisms of Embodiment 4 - Embodiment 6.

[0044] The preparation method of the flow channel mechanism of the embodiment of the present invention includes Step 1 to Step 4.

[0045] Step 1: Prepare a plurality of multi-direction heat exchange cores.

[0046] Step 2: Cut the multi-direction heat exchange cores according to the size and flow channel direction of the required flow channel mechanism. The flow-through sides of the multi-layer multi-direction heat exchange cores are cut along the channel holes or non-channel holes.

[0047] Step 3: Stack the multi-layer multi-direction heat exchange cores according to the flow channel direction of the required flow channel mechanism.

[0048] Step 4: Weld and seal the multi-layer multi-direction heat exchange cores (for example, diffusion welding can be used) according to the flow channel direction of the required flow channel mechanism to obtain the flow direction mechanism.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A multi-directional heat exchange core, characterized in that, It includes a plate-shaped body, on which there are several channel holes. The channel holes are composed of a communication hole and four groups of flow channel through holes, and the communication hole connects the four groups of flow channel through holes; the flow channel through holes on the body are arranged in an array with a row pitch and a column pitch both being a preset distance.

2. The multi-direction heat exchange core according to claim 1, wherein, The channel holes are in an X shape, a quasi-X shape, a plum blossom shape or a snowflake shape.

3. A runner mechanism, characterized in that, It is formed by stacking multiple multi-directional heat exchange cores as described in any one of claims 1 or 2 in sequence, and the channel holes of adjacent multi-directional heat exchange cores are staggered by a preset distance left and right and / or front and back.

4. The runner mechanism according to claim 3, wherein, The flow channel mechanism includes one or more non-flowing sides, and the multi-layer multi-directional heat exchange cores of the flow channel mechanism are aligned and sealed on the non-flowing sides.

5. The runner mechanism according to claim 4, wherein Two opposite sides of the flow channel mechanism are non-flowing sides, and the channel holes of the multi-layer multi-directional heat exchange cores of the flow channel mechanism sequentially form a single-in and single-out radial flow channel.

6. The runner mechanism according to claim 4, characterized in that Two adjacent sides of the flow channel mechanism are non-flowing sides, and the channel holes of the multi-layer multi-directional heat exchange cores of the flow channel mechanism sequentially form a single-in and single-out deflected flow channel.

7. The runner mechanism according to claim 4, wherein One side of the flow channel mechanism is a non-flowing side, and the channel holes of the multi-layer multi-directional heat exchange cores of the flow channel mechanism sequentially form a single-in and multi-out or multi-in and single-out deflected flow channel.

8. A preparation method of a flow channel mechanism, characterized in that, It includes: Step 1: Prepare multiple multi-directional heat exchange cores as described in any one of claims 1 or 2. Step 2: Cut the multi-directional heat exchange cores according to the size and flow channel direction of the required flow channel mechanism. Step 3: Stack the multi-layer multi-directional heat exchange cores according to the flow channel direction of the required flow channel mechanism. Step 4: Weld and seal the multi-layer multi-directional heat exchange cores according to the flow channel direction of the required flow channel mechanism to obtain the flow direction mechanism.

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