A bifurcated micro-channel heat exchanger's flow guide integrated structure

Abstract

The utility model discloses a kind of diversion integrated structure of bifurcated microchannel heat exchanger, it is related to heat exchange equipment technical field, including header one, the flat tube is fixed with in the vertical array right side of header one, sliding connection has fin between the flat tube, the sliding position of flat tube corresponding fin wave crest and wave trough is equipped with sliding slot, the flat tube is fixed with header two in header one side away from, multiple groups of rectangular through holes are equipped with in the direction of header one to header two in the flat tube, the protection device is symmetrically arranged in the front and back side of header one,header two. The utility model realizes the protection when internal component is in non-working state by the effective linkage of electric telescopic rod and C-shaped baffle in protection device, improve the service life of device;By the reciprocating linkage of cleaning brush in flat tube and fin, the regular effective cleaning of internal heat exchange key component fin is realized, improve the working efficiency of device.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically to a flow guiding integrated structure for a bifurcated microchannel heat exchanger. Background Technology

[0002] The bifurcated microchannel heat exchanger's integrated flow-guiding structure is a biomimetic design that mimics the fractal patterns found in nature. Through a multi-level, tree-like branching flow channel network, it uniformly, efficiently, and with low resistance distributes fluid from the inlet manifold into the vast microchannel heat exchange plane, and similarly collects and exits the fluid at the outlet. This bifurcated flow-guiding integrated structure is a revolutionary design proposed to completely solve the core challenge of achieving perfect distribution in microchannel heat exchangers. It addresses the flow channel architecture itself, rather than merely optimizing the inlet manifold, offering a fundamental solution. In summary, the bifurcated microchannel heat exchanger's integrated flow-guiding structure is not only a paradigm shift in microchannel heat exchanger design but also a benchmark innovation integrating bionics, multidisciplinary collaboration, and advanced manufacturing. It solves the core technical challenges that have long plagued the engineering applications of microchannel heat exchangers, opening the door to their large-scale application in high-end fields and representing an important direction for future thermal management technology development.

[0003] The existing bifurcated microchannel heat exchanger has a relatively fixed flow-guiding integrated structure, limited functionality, and low operability. Specifically, it has the following shortcomings: the existing bifurcated microchannel heat exchanger lacks protection for internal components when they are not in operation, and at the same time, it lacks regular and effective cleaning of the fins of the key internal heat exchange components, thus failing to effectively improve the working efficiency of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a flow-guiding integrated structure for a bifurcated microchannel heat exchanger, which solves the technical problems of existing devices lacking protection for internal components when they are not in operation and lacking regular and effective cleaning of the fins of key internal heat exchange components, thereby improving the service life and working efficiency of the device.

[0005] The objective of this utility model can be achieved through the following technical solutions: A flow-guiding integrated structure for a bifurcated microchannel heat exchanger includes a first manifold, with flat tubes fixed vertically in an array on the right side of the first manifold, fins slidably connected between the flat tubes, and grooves provided on the flat tubes corresponding to the sliding positions of the fin peaks and troughs. A second manifold is fixed on the side of the flat tube away from the first manifold, and multiple sets of rectangular through holes are provided inside the flat tubes along the direction from the first manifold to the second manifold. Protective devices are symmetrically arranged on the front and rear sides of the first and second manifolds. The protective device includes connecting rods symmetrically fixed on the front and rear sides of manifold one and manifold two. The upper and lower ends of the connecting rods are fixedly connected to the inner walls of the two limbs of the C-shaped shielding groove. A C-shaped baffle is slidably connected inside the C-shaped shielding groove. An electric telescopic rod is symmetrically fixed on the middle side of the connecting rod. A block is fixed to the head of the electric telescopic rod. The block is fixedly connected to the middle of the inner wall of the C-shaped baffle.

[0006] As a further embodiment of this utility model, a limit block is provided at the groove opening where the C-shaped shielding groove and the C-shaped baffle connect, in order to limit the extreme sliding distance of the C-shaped baffle.

[0007] As a further embodiment of this utility model, a partition plate is fixed in the middle of the inside of the manifold to separate the refrigerant.

[0008] As a further embodiment of this utility model, an inlet pipe is fixed to the upper left side of the manifold, and an outlet pipe is fixed to the lower left side of the manifold.

[0009] As a further embodiment of this utility model, a partition plate is fixed in the middle of the inner part of the manifold, and a flow guide hole is opened in the middle of the partition plate for the flow of refrigerant.

[0010] As a further embodiment of this utility model, holes are arrayed along the length direction in the middle position of the arc-shaped region of the fin, and a slide rail is fixed at the corresponding slide groove position at the crest and trough of the fin.

[0011] As a further embodiment of this utility model, a cleaning device is provided between the flat tubes. The cleaning device includes a cleaning brush fixed at the front end of the flat tubes. The cleaning brush is located near the upper and lower surfaces of the fins. Pressing plugs are symmetrically fixed at the front end of the slide rails at the crests on both sides of the fins. Pull rods are symmetrically fixed on the outside of the pressing plugs.

[0012] As a further embodiment of this utility model, a circular hole is provided at the front end of the flat tube corresponding to the position of the pressing plug, for fixing and removing the pressing plug.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves protection for internal components when they are not in operation by effectively linking the electric telescopic rod and the C-shaped baffle in the protection device, thereby improving the service life of the device.

[0014] This invention achieves regular and effective cleaning of the fins, a key internal heat exchange component, by using a cleaning brush inside a flat tube and the reciprocating linkage of the fins, thereby improving the working efficiency of the device. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model in its working state; Figure 2 This is a schematic diagram of the overall structure of this utility model in its non-operating protective state; Figure 3 This is a schematic diagram of the overall structure of this utility model in a non-working cleaning state. Figure 4 This is a schematic diagram of the overall structure of this utility model in a non-working cleaning state from a second perspective; Figure 5 This is a schematic diagram of the protective device structure of this utility model; Figure 6 This is a schematic diagram of the manifold and its internal components of the present invention. Figure 7 This is a schematic diagram of the manifold II and its internal components of this utility model.

[0017] In the diagram: 1. Manifold 1; 2. Flat pipe; 3. Fin; 4. Slide groove; 5. Manifold 2; 6. Protective device; 7. Connecting rod; 8. C-shaped shielding groove; 9. C-shaped baffle; 10. Electric telescopic rod; 11. Block; 12. Partition 1; 13. Inlet pipe; 14. Outlet pipe; 15. Partition 2; 16. Guide hole; 17. Slide rail; 18. Cleaning device; 19. Cleaning brush; 20. Pressing round plug; 21. Pull rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] See appendix Figure 1-7As shown, a flow-guiding integrated structure of a bifurcated microchannel heat exchanger includes a manifold 1, with flat tubes 2 vertically arrayed and fixed on the right side of the manifold 1. Fins 3 are slidably connected between the flat tubes 2. Sliding grooves 4 are provided on the flat tubes 2 corresponding to the sliding positions of the fins 3. A manifold 2 5 is fixed on the side of the flat tubes 2 away from the manifold 1. Multiple sets of rectangular through holes are provided inside the flat tubes 2 along the direction from the manifold 1 to the manifold 2 5. Protective devices 6 are symmetrically arranged on the front and rear sides of the manifold 1 and the manifold 2 5. A partition 12 is fixed in the middle of the inside of the manifold 1 for separating the refrigerant. An inlet pipe 13 is fixed on the upper left side of the manifold 1, and an outlet pipe 14 is fixed on the lower left side of the manifold 1. A partition 2 15 is fixed in the middle of the inside of the manifold 2 5. A flow-guiding hole 16 is provided in the middle of the partition 2 15 for the flow of refrigerant.

[0020] Specifically, the refrigerant flows from the inlet pipe 13 into the upper part of the manifold 1. Due to the presence of the baffle 12, it flows into the rectangular through holes of several sets of flat tubes 2 in the upper part, and then flows into the upper part of the manifold 2. The flow direction of the refrigerant is controlled by the guide holes 16 in the baffle 2. The refrigerant flows into the lower part of the manifold 2, and then into the rectangular through holes of several sets of flat tubes 2 in the lower part, finally reaching the lower part of the manifold 1. The refrigerant circulates multiple times in the heat exchanger, thereby increasing the heat exchange time and thus increasing the heat exchange of the entire process. The multiple sets of rectangular through holes in the flat tubes 2 are microchannels of the heat exchanger. These microchannels greatly increase the heat exchange area of ​​the heat exchanger, so that more heat in the refrigerant can be transferred to the metal surface of the flat tubes 2. Due to the temperature difference between the refrigerant and the ambient air, the heat will be transferred to the fins 3 through the flat tubes 2. When the air flows through the gaps between the fins 3, it can carry away the heat transferred from the refrigerant to the fins 3 through convection.

[0021] See appendix Figure 1 , 2 As shown in Figure 5, the protection device 6 includes a connecting rod 7 symmetrically fixed on the front and rear sides of manifold 1 and manifold 2 5. The upper and lower ends of the connecting rod 7 are fixedly connected to the inner wall of the double limbs of the C-shaped shielding groove 8. A C-shaped baffle 9 is slidably connected inside the C-shaped shielding groove 8. An electric telescopic rod 10 is symmetrically fixed on the middle side of the connecting rod 7. A block 11 is fixed to the head of the electric telescopic rod 10. The block 11 is fixedly connected to the middle of the inner wall of the C-shaped baffle 9. A limit block is provided at the groove opening where the C-shaped shielding groove 8 and the C-shaped baffle 9 are connected to limit the extreme sliding distance of the C-shaped baffle 9.

[0022] Specifically, when the heat exchanger is in operation, the four sets of electric telescopic rods 10 are induced to retract, causing the connected C-shaped baffles 9 to slide within the C-shaped shielding grooves 8, so that the heat exchange equipment is in a normal air circulation state; when the heat exchanger is not in operation, the four sets of electric telescopic rods 10 are induced to extend, and the C-shaped baffles 9 and C-shaped shielding grooves 8 shield and protect the heat exchanger.

[0023] See appendix Figure 1 , 3 As shown in Figure 4, a cleaning device 18 is provided between the flat tubes 2. The cleaning device 18 includes a cleaning brush 19 fixed at the front end of the flat tubes 2. The cleaning brush 19 is located near the upper and lower surfaces of the fins 3. Pressing plugs 20 are symmetrically fixed at the front end of the slide rails 17 at the crests on both sides of the fins 3. Pull rods 21 are symmetrically fixed on the outside of the pressing plugs 20. Holes are arrayed along the length direction in the middle of the arc-shaped area of ​​the fins 3. Slide rails 17 are fixed at the crests and troughs of the fins 3 corresponding to the slide grooves 4. A round hole is provided at the front end of the flat tubes 2 corresponding to the pressing plugs 20 for fixing and removing the pressing plugs 20.

[0024] Specifically, the fins 3 are cleaned regularly. When the heat exchanger is not in operation and is not being protected, the two pull rods 21 at the front end are pulled out by pulling out the pressing plug 20. This causes the slide rails 17 at the crests and troughs of the multiple sets of fins 3 to move along the corresponding slide grooves 4 between the flat tubes 2. The multiple sets of cleaning brushes 19 will clean the upper and lower surfaces of the fins 3. By pulling the pull rods 21 back and forth, the fins 3 can be cleaned. After cleaning, the fins 3 move back to their original position along the slide rails 17. At this time, the pressing plug 20 is fixed.

[0025] The working principle of this utility model is as follows: The refrigerant is flexibly assembled with manifold 1, flat tube 2, fins 3, manifold 2, protective device 6, and cleaning device 18. The refrigerant flows from the inlet pipe 13 into the upper part of manifold 1. Due to the presence of baffle 12, it flows into the rectangular through-holes of several sets of flat tubes 2 in the upper part, and then into the upper part of manifold 2. The flow direction of the refrigerant is controlled by the guide holes 16 in baffle 2 15, and the refrigerant flows into the lower part of manifold 2 5, then into the rectangular through-holes of several sets of flat tubes 2 in the lower part, finally reaching the lower part of manifold 1. The refrigerant circulates multiple times within the heat exchanger, thereby increasing the heat exchange time and thus increasing the overall heat exchange. The multiple sets of rectangular through-holes in the flat tubes 2 act as microchannels in the heat exchanger, greatly increasing the heat exchange area. This allows more heat from the refrigerant to be transferred to the metal surface of the flat tubes 2. Due to the temperature difference between the refrigerant and the ambient air, heat is transferred through the flat tubes 2 to the fins 3. As air flows over the fins... When the gap between the fins 3 is clear, the heat transferred to the fins 3 by the refrigerant can be carried away by convection. When the heat exchanger is in operation, the four sets of electric telescopic rods 10 are induced to retract, causing the connected C-shaped baffles 9 to slide in the C-shaped shielding grooves 8, so that the heat exchange equipment is in a normal air circulation state. When the heat exchanger is not in operation, the four sets of electric telescopic rods 10 are induced to extend, and the C-shaped baffles 9 and C-shaped shielding grooves 8 shield and protect the heat exchanger. The fins 3 are cleaned regularly. When the heat exchanger is not in operation and the heat exchanger is not protected temporarily, by pulling out the pressing plug 20 and pulling the two front rods 21, the slide rails 17 at the crests and troughs of the multiple sets of fins 3 move along the corresponding slide grooves 4 between the flat tubes 2. The multiple sets of cleaning brushes 19 will clean the upper and lower surfaces of the fins 3. By pulling the rods 21 back and forth, the fins 3 can be cleaned. After cleaning, the fins 3 move back to their original position along the slide rails 17, and the pressing plug 20 is fixed at this time. This utility model achieves protection for internal components when they are not in operation by effectively linking the electric telescopic rod 10 and the C-shaped baffle 9 in the protection device 6, thereby improving the service life of the device. By linking the cleaning brush 19 in the flat tube 2 with the reciprocating linkage of the fins 3, the key internal heat exchange component fins 3 can be cleaned regularly and effectively, thereby improving the working efficiency of the device.

[0026] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A flow-guiding integrated structure for a branched microchannel heat exchanger, comprising a manifold (1), characterized in that: Flat tubes (2) are fixed vertically on the right side of the manifold (1). Fins (3) are slidably connected between the flat tubes (2). Sliding grooves (4) are provided on the flat tubes (2) corresponding to the sliding positions of the fins (3) at the crests and troughs. A manifold (5) is fixed on the side of the flat tube (2) away from the manifold (1). Multiple sets of rectangular through holes are provided in the flat tube (2) along the direction from the manifold (1) to the manifold (5). Protective devices (6) are symmetrically arranged on the front and rear sides of the manifold (1) and the manifold (5). The protective device (6) includes a connecting rod (7) symmetrically fixed on the front and rear sides of manifold 1 (1) and manifold 2 (5). The upper and lower ends of the connecting rod (7) are fixedly connected to the inner wall of the double limbs of the C-shaped shielding groove (8). A C-shaped baffle (9) is slidably connected in the C-shaped shielding groove (8). An electric telescopic rod (10) is symmetrically fixed on the middle side of the connecting rod (7). A block (11) is fixed at the head of the electric telescopic rod (10). The block (11) is fixedly connected to the middle of the inner wall of the C-shaped baffle (9).

2. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: A limit block is provided at the groove where the C-shaped shielding groove (8) and the C-shaped baffle (9) are connected, which is used to limit the extreme sliding distance of the C-shaped baffle (9).

3. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: A partition plate (12) is fixed in the middle of the manifold (1) to separate the refrigerant.

4. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: An inlet pipe (13) is fixed on the upper left side of the manifold 1 (1), and an outlet pipe (14) is fixed on the lower left side of the manifold 1 (1).

5. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: A partition plate (15) is fixed in the middle of the manifold (5), and a guide hole (16) is opened in the middle of the partition plate (15) for the flow of refrigerant.

6. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: The fin (3) has holes arranged in the middle of the arc-shaped area along the length direction, and the fin (3) has a slide rail (17) fixed at the position of the slide groove (4) corresponding to the peak and trough of the fin (3).

7. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: A cleaning device (18) is provided between the flat tubes (2). The cleaning device (18) includes a cleaning brush (19) fixed at the front end of the flat tubes (2). The cleaning brush (19) is close to the upper and lower surfaces of the fins (3). A pressing plug (20) is symmetrically fixed at the front end of the slide rail (17) at the crest of the fins (3). A pull rod (21) is symmetrically fixed on the outside of the pressing plug (20).

8. The flow-guiding integrated structure of a bifurcated microchannel heat exchanger according to claim 1, characterized in that: The flat tube (2) has a round hole at the front end corresponding to the position of the pressing round plug (20), which is used to fix and pull out the pressing round plug (20).

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