Micro-curved-surface spiral baffle plate structure and heat exchanger

Abstract

The utility model provides a micro curved surface spiral baffle plate structure, which comprises at least four baffle plates, each baffle plate is a sector with a 1 / 4 circular structure, and each baffle plate is respectively provided with a first micro curved surface and a second micro curved surface which are connected with each other. A first extension part and a second extension part which are in smooth transition with the first micro-curved surface and the second micro-curved surface are respectively arranged on the opposite sides of the first micro-curved surface and the second micro-curved surface, and the first micro-curved surface and the second micro-curved surface are of arc-shaped structures with opposite openings; and the first extension part of one baffle plate is partially overlapped with the second extension part of another adjacent baffle plate, so that all the baffle plates are encircled to form a spiral structure of which the outer edge is a spiral line. According to the utility model, the problem that the heat exchange efficiency cannot be further improved due to the baffle plate with a spliced spiral structure in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger structures, in particular to a micro-curved spiral baffle structure and a heat exchanger. Background Art

[0002] A heat exchanger generally includes a shell, in which a number of heat exchange tubes are arranged. At the same time, in order to improve the heat exchange efficiency, a spiral baffle can be set in the shell to make the fluid flow in a spiral shape. However, in the actual processing process, the shell generally has a large length, so the spiral structure also needs to be set longer, and the integrated spiral structure is often difficult to process during processing, which leads to a high overall cost of the equipment. Therefore, in the prior art, a plurality of fan-shaped baffles are generally spliced ​​into an integral spiral structure. However, this will form gaps between adjacent baffles, and serious leakage will often occur in the gaps, so that part of the fluid does not flow with the spiral structure, and the heat exchange efficiency will not be further improved accordingly. In the prior art, the gap can be sealed by setting a sealing plate to prevent leakage. For example, the authorization announcement number CN204346233U provides a spiral baffle anti-leakage flow device. The spiral baffle blocks the gap by setting a sealing plate. However, in the actual operation process, the fluid does not have a smooth transition when flowing between the baffles, which will also affect the further improvement of the heat exchange efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a micro-curved spiral baffle structure, which solves the problem in the prior art that the heat exchange efficiency of the baffle with a spliced ​​spiral structure cannot be further improved.

[0004] According to an embodiment of the present invention, a micro-curved spiral baffle structure includes at least four baffles, each of which is a sector of a 1 / 4 circular structure, and each baffle is respectively provided with a first micro-curved surface and a second micro-curved surface that are connected to each other, and the first micro-curved surface and the second micro-curved surface are further provided with a first extension portion and a second extension portion that smoothly transitions to the opposite sides thereof, and the first micro-curved surface and the second micro-curved surface are arc-shaped structures with opposite openings; wherein the first extension portion on a baffle partially overlaps with the second extension portion of another adjacent baffle so that all the baffles are enclosed into a spiral structure with a spiral line as the outer edge.

[0005] In the above embodiment, the baffle and the first extension part and the second extension part on both sides thereof can be processed by integral molding, which has low processing difficulty. At the same time, the first micro-curved surface and the second micro-curved surface can provide spiral guidance for the fluid, and the first extension part and the second extension part partially block the gap, reducing the leakage amount. At the same time, they can continue to guide the fluid, so that the fluid can smoothly transition from one baffle to the next baffle, which reduces the processing difficulty and the leakage amount, and ensures the smooth transition of the fluid, solving the problem in the prior art that the baffle with spliced ​​spiral structure cannot further improve the heat exchange efficiency.

[0006] Furthermore, the first extension portion and the second extension portion are respectively provided with a third micro-curved surface and a fourth micro-curved surface connected to each other, wherein the third micro-curved surface is connected to the first micro-curved surface or the second micro-curved surface, and the third micro-curved surface and the fourth micro-curved surface are arc-shaped structures with opposite openings.

[0007] Furthermore, the first micro-curved surface, the second micro-curved surface, the third micro-curved surface and the fourth micro-curved surface have an inclination angle of 1-15°.

[0008] Furthermore, the fourth micro-curved surface on one baffle partially overlaps with the fourth micro-curved surface on another adjacent baffle.

[0009] Furthermore, a notch is provided on the outer edge of the baffle.

[0010] Furthermore, a plurality of mounting holes are provided on the baffle.

[0011] According to an embodiment, a heat exchanger is further provided, which includes a shell, and the above-mentioned micro-curved spiral baffle structure is arranged in the shell.

[0012] Furthermore, it also includes a plurality of heat exchange tubes, and all the baffles are sleeved on the plurality of heat exchange tubes through the mounting holes.

[0013] Furthermore, a reinforcement plate that fits into the notch is fixedly connected to the inner wall of the shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting the first extension part and the second extension part, the gap is partially blocked, the leakage is reduced, and the fluid can continue to be guided, so that the fluid can smoothly transition from one baffle to the next baffle, which reduces the processing difficulty and reduces the leakage. At the same time, it ensures the smooth transition of the fluid, and solves the problem in the prior art that the heat exchange efficiency cannot be further improved due to the spliced ​​spiral structure baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the baffle structure of an embodiment of the utility model (only a portion of the mounting holes are shown);

[0018] Figure 3 This is a schematic diagram of the partial overlap of the first extension portion and the second extension portion of an embodiment of the present utility model;

[0019] In the above drawings:

[0020] Baffle 1, first micro-curved surface 2, second micro-curved surface 3, first extension portion 4, second extension portion 5, third micro-curved surface 6, fourth micro-curved surface 7, shell 8, heat exchange tube 9, mounting hole 10, notch 11, reinforcement plate 12. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0023] In an exemplary embodiment, Figure 1-3 As shown, the present embodiment provides a micro-curved spiral baffle structure, which includes at least four baffles 1, each baffle 1 is a sector of a 1 / 4 circular structure, and each baffle 1 is respectively provided with a first micro-curved surface 2 and a second micro-curved surface 3 connected to each other, and the first micro-curved surface 2 and the second micro-curved surface 3 are respectively provided with a first extension portion 4 and a second extension portion 5 that smoothly transitions thereto on the opposite sides thereof, and the first micro-curved surface 2 and the second micro-curved surface 3 are arc-shaped structures with opposite openings; wherein the first extension portion 4 on a baffle 1 partially overlaps with the second extension portion 5 of another adjacent baffle 1 so that all the baffles 1 are enclosed into a spiral structure with a spiral outer edge.

[0024] In the above embodiment, the baffle 1 and the first extension 4 and the second extension 5 on both sides thereof can be processed by one-piece molding, which is easy to process. The corresponding existing technology can also be processed by one-piece molding, but since the gaps need to be sealed, the processing size requirements are often higher, which can easily lead to the adjacent baffles 1 not being able to be completely docked, causing additional trouble (such as the need for cutting, grinding, etc.); the first micro-curved surface 2 and the second micro-curved surface 3 set at the same time in this solution can provide spiral guidance for the fluid, while the first extension 4 and the second extension 5 partially block the gaps, reducing the amount of leakage, and can also continue to guide the fluid, so that the fluid smoothly transitions from one baffle 1 to the next baffle 1, which reduces the processing difficulty and the amount of leakage, while ensuring the smooth transition of the fluid, solving the problem in the prior art that the baffle 1 with a spliced ​​spiral structure does not further improve the heat exchange efficiency; in more detail, In this solution, when splicing, the adjacent first extension parts 4 and second extension parts 5 partially overlap, and the processing difficulty is lower. Furthermore, the first extension part 4 and the second extension part 5 are respectively provided with a third micro-curved surface 6 and a fourth micro-curved surface 7 connected to each other, wherein the third micro-curved surface 6 is connected to the first micro-curved surface 2 or the second micro-curved surface 3, and the third micro-curved surface 6 and the fourth micro-curved surface 7 are arc structures with opposite openings. Similar to the first micro-curved surface 2 and the second micro-curved surface 3, the third micro-curved surface 6 and the fourth micro-curved surface 7 can also guide the fluid, thereby further making the fluid transition smooth. Specifically, the fourth micro-curved surface 7 on one baffle 1 and the fourth micro-curved surface 7 on another adjacent baffle 1 partially overlap (the two may not be in direct contact); in a more detailed implementation scheme, the first micro-curved surface 2, the second micro-curved surface 3 and the third micro-curved surface 6 and the fourth micro-curved surface 7 have an inclination angle of 1-15°, and can also be 10-15°, so that the fluid can be more stable during the swirl process.

[0025] like Figure 1-3 As shown, in another embodiment, a heat exchanger including the above-mentioned micro-curved spiral baffle 1 structure is provided, which includes a shell 8, and the micro-curved spiral baffle 1 structure is arranged in the shell 8. A plurality of heat exchange tubes 9 are also arranged in the shell 8, and a plurality of mounting holes 10 are provided on the baffle 1. These heat exchange tubes 9 pass through the mounting holes 10, thereby realizing the connection between the baffle 1 and the heat exchange tubes 9. Furthermore, a notch 11 is provided on the outer edge of the baffle 1, and a reinforcement plate 12 that is inserted into the notch 11 is fixedly connected to the inner wall of the shell 8, thereby strengthening the connection strength between the baffle 1 and the shell 8.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A micro-curved spiral baffle structure, characterized in that: It comprises at least four baffles, each of which is a sector of a 1 / 4 circular structure, and each of which is respectively provided with a first micro-curved surface and a second micro-curved surface connected to each other, and the first micro-curved surface and the second micro-curved surface are respectively provided with a first extension portion and a second extension portion on the opposite sides thereof to smoothly transition therewith, and the first micro-curved surface and the second micro-curved surface are arc-shaped structures with opposite openings; wherein the first extension portion on one baffle partially overlaps with the second extension portion of another adjacent baffle so that all the baffles are combined into a spiral structure with a spiral line as the outer edge.

2. The micro-curved spiral baffle structure according to claim 1, characterized in that: The first extension portion and the second extension portion are respectively provided with a third micro-curved surface and a fourth micro-curved surface connected to each other, wherein the third micro-curved surface is connected to the first micro-curved surface or the second micro-curved surface, and the third micro-curved surface and the fourth micro-curved surface are arc-shaped structures with opposite openings.

3. The micro-curved spiral baffle structure according to claim 2, characterized in that: The first micro-curved surface, the second micro-curved surface, the third micro-curved surface and the fourth micro-curved surface have an inclination angle of 1-15°.

4. The micro-curved spiral baffle structure according to claim 2, characterized in that: The fourth micro-curved surface on one baffle partially overlaps with the fourth micro-curved surface on another adjacent baffle.

5. The micro-curved spiral baffle structure according to any one of claims 1 to 4, characterized in that: A notch is also provided on the outer edge of the baffle.

6. The micro-curved spiral baffle structure according to claim 5, characterized in that: The baffle is also provided with a plurality of mounting holes.

7. A heat exchanger, characterized in that: It comprises a shell, in which the micro-curved spiral baffle structure as claimed in claim 6 is arranged.

8. The heat exchanger according to claim 7, characterized in that It also includes a plurality of heat exchange tubes, and all the baffles are sleeved on the plurality of heat exchange tubes through the mounting holes.

9. The heat exchanger according to claim 7, wherein: A reinforcing plate is also fixedly connected to the inner wall of the shell and is inserted into the notch.

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