Coiled pipe, heat exchange core body and evaporative cooling equipment
By adopting a multi-section tube unit connection structure in the serpentine tube of the evaporative cooling equipment, the spatial misalignment of adjacent serpentine tubes is ensured, and the problem of anti-corrosion blind spots during galvanization is solved, and a complete galvanized layer is formed, which avoids rust and perforation, and reduces maintenance costs.
Patent Information
- Application Number
- CN202420110930.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The snake-shaped tubes in existing evaporative cooling equipment have anti-corrosion blind spots when dipping zinc, resulting in corrosion and perforation problems and high maintenance costs.
Serpentine tubes connected by multi-section tube units are used. Each section tube unit consists of small elbows, large elbows and straight tubes. The adjacent serpentine tube space is arranged in a dislocation to ensure that the small elbows are located in the large elbows and retain a certain gap to avoid close contact.
Avoid anti-corrosion blind spots when dipping zinc, form a complete galvanized layer to prevent rust and perforation, and reduce maintenance costs.
Smart Images
Figure CN222598606U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of evaporative cooling equipment manufacturing, in particular to a serpentine tube, a heat exchange core with the serpentine tube, and evaporative cooling equipment with the heat exchange core. Background Art
[0002] Evaporative cooling equipment is mainly composed of six parts: fan, water pump, heat exchange core, spray component, water collector and box. The main part of the heat exchange core is the serpentine tube. The heat medium is passed into the serpentine tube. The heat is taken away by the evaporation of the water film outside the tube to achieve the cooling of the heat medium in the tube. The serpentine tube is made of carbon steel pipe. The serpentine tube is cold-bent and welded with the manifold. Then it is installed in the frame through a fixed card plate to form the heat exchange core component. The heat exchange core component works in a hot and humid environment. In order to prevent corrosion, the entire heat exchange core component must be placed in a 475℃ zinc liquid pool for hot dip zinc.
[0003] See attached Figure 1 and attached Figure 2 In order to increase the arrangement density of the serpentine tubes and improve the heat exchange efficiency of the heat exchange core, the current heat exchange core components have multiple serpentine tubes closely arranged on the manifold, and the spacing between adjacent serpentine tubes is very small. The two ends of the existing serpentine tubes have the same elbows. Although the staggered arrangement is adopted, the elbows of adjacent serpentine tubes still come into close contact due to the increase in the width of the elbows after cold bending (see attached Figure 1 and attached Figure 2 At present, the problem with heat exchange core components is that during zinc dipping, the zinc liquid cannot penetrate into the close contact parts, resulting in an anti-corrosion blind spot in the close contact parts. After the equipment is installed and operated, once it is affected by vibration or thermal stress, the close contact parts will be misaligned. At this time, the close contact parts without zinc layer are exposed to the hot and humid air and will soon rust. In particular, the wall thickness of the elbow will be thinner after cold bending. As the degree of rust increases, it is easy to form perforations, which will cause leakage of the medium in the tube. For evaporative cooling equipment, serpentine tube leakage is a difficult problem to find and solve, and the cost of maintenance and replacement is very high.
[0004] In summary, preventing the occurrence of galvanizing blind areas in serpentine tubes is a direction that designers in this field should pay attention to and work hard on. Utility Model Content
[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a serpentine tube, a heat exchange core having the serpentine tube, and an evaporative cooling device having the heat exchange core. The utility model adopts the following technical solutions:
[0006] A serpentine pipe is formed by connecting multiple pipe units. Each pipe unit consists of a small elbow, a large elbow and two straight pipes. The width and height of the small elbow are smaller than those of the large elbow. The straight pipe is connected between the small elbow and the large elbow and is tangent to the small elbow and the large elbow.
[0007] To further improve the technical solution, the small elbow is a small arc elbow, and the large elbow is a large arc elbow or a bent elbow.
[0008] To further improve the technical solution, the bending head has two bending angles, and the bending angles are 92-100°.
[0009] To further improve the technical solution, the radius of the small arc elbow is 2-5 times the diameter of the serpentine pipe.
[0010] To further improve the technical solution, the diameter of the serpentine tube is any one of 14, 24, 25, 32, 35, and 38.
[0011] A heat exchange core is provided with a plurality of serpentine tubes, wherein two adjacent serpentine tubes are arranged in parallel and staggered manner; in a projection plane parallel to the serpentine tubes, the projection area of the small elbow of one serpentine tube is located within the projection area of the large elbow of the adjacent serpentine tube.
[0012] To further improve the technical solution, the minimum distance between two adjacent serpentine tubes is greater than the radius of the serpentine tubes.
[0013] To further improve the technical solution, a frame is provided in the heat exchange core, a liquid inlet manifold and a liquid outlet manifold are provided at both ends of the frame, and the inlet and outlet ends of the plurality of serpentine tubes are respectively connected to the liquid inlet manifold and the liquid outlet manifold.
[0014] To further improve the technical solution, a fixed clamping plate is provided on the frame, and clamping holes are provided on the fixed clamping plate. The clamping holes are used to fix the small elbow and the large elbow, and the hole spacing of the clamping holes is 1.8-2.2 times the diameter of the serpentine pipe.
[0015] An evaporative cooling device comprises a heat exchange core.
[0016] After implementing the above technical solution, compared with the background technology, the beneficial effects produced by the utility model are:
[0017] The serpentine tube has a large elbow at one end and a small elbow at the other end. When assembling the heat exchange core, two adjacent serpentine tubes are arranged in a spaced staggered manner, and the small elbow of one serpentine tube is located inside the large elbow of the adjacent serpentine tube, with a certain gap. In this way, there will be no anti-corrosion blind area when the serpentine tube is zinc-dipped, and the zinc liquid can completely cover the outer surface of the serpentine tube and form a complete galvanized layer, preventing the occurrence of rust and perforation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Attached Figure 1 Shown is a front view of a conventional heat exchange core.
[0019] Attached Figure 2 Shown is a top view of a conventional heat exchange core.
[0020] Attached Figure 3 What is shown is a structural schematic diagram of the serpentine tube.
[0021] Attached Figure 4 The attached Figure 3 Schematic diagram of the structure of the middle tube unit.
[0022] Attached Figure 5 Shown is another structural schematic diagram of the serpentine tube.
[0023] Attached Figure 6 The attached Figure 5 Schematic diagram of the structure of the middle tube unit.
[0024] Attached Figure 7 Shown is a front view of the heat exchange core.
[0025] Attached Figure 8 Shown is a top view of the heat exchange core.
[0026] Attached Fig. 9 Shown is a projection diagram of the serpentine tube in the heat exchange core.
[0027] Attached Fig.10 Shown is a schematic diagram of the structure of a fixed card plate in a heat exchange core.
[0028] Attached photos
[0029] 1. Serpentine tube;
[0030] 11. pipe unit; 111. small elbow; 112. straight pipe; 113. large elbow;
[0031] 2. Heat exchange core;
[0032] 21. Frame; 22. Liquid inlet manifold; 23. Liquid outlet manifold; 24. Fixed bracket. DETAILED DESCRIPTION
[0033] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0034] See attached Figure 3 and attached Figure 4 A serpentine pipe is formed by connecting multiple pipe units 11. Each pipe unit 11 is composed of a small elbow 111, a large elbow 113 and two straight pipes 112. The small elbow 111 is a small arc elbow, and the large elbow 113 is a large arc elbow. The radius of the small arc elbow is smaller than that of the large arc elbow. The straight pipe 112 is connected between the small elbow 111 and the large elbow 113, and is tangent to the small elbow 111 and the large elbow 113.
[0035] See attached Figure 5 and attached Figure 6 In another embodiment, the pipe unit 11 is composed of a small elbow 111, a large elbow 113 and two straight pipes 112. The small elbow 111 is a small arc elbow, and the large elbow 113 is a bending head. The width and height of the small elbow 111 are smaller than the width and height of the large elbow 113. The straight pipe 112 is connected between the small elbow 111 and the large elbow 113, and is tangent to the small elbow 111 and the large elbow 113. The bending head has two bending angles, and the angles of the bending angles are 92-100°. In this way, the two straight pipes 112 are tilted outward at a smaller angle.
[0036] The serpentine tube 1 can be made of the commonly used Φ14, Φ24, Φ25, Φ32, Φ35, Φ38 carbon steel tubes. The small arc elbow adopts the rolling process. According to the preferred process requirements, the rolling radius of the small arc elbow is 2-5 times the diameter of the serpentine tube 1, and the central angle of the rolling part is less than 180°.
[0037] The elbows at both ends of the existing serpentine pipe 1 are all the same. The elbows at both ends of this serpentine pipe 1 are different, one end adopts a large elbow 113, and the other end adopts a small elbow 111, and the width and height of the small elbow 111 are less than the width and height of the large elbow 113.
[0038] See attached Figure 7 and attached Figure 8 A heat exchange core 2 is provided with a frame 21 inside the heat exchange core 2, a liquid inlet manifold 22 and a liquid outlet manifold 23 are provided at both ends of the frame 21, a plurality of serpentine tubes 1 are provided between the liquid inlet manifold 22 and the liquid outlet manifold 23, the inlet and outlet ends of the plurality of serpentine tubes 1 are respectively connected to the liquid inlet manifold 22 and the liquid outlet manifold 23, and two adjacent serpentine tubes 1 are arranged in parallel and staggered. A fixed clamping plate 24 is provided on the frame 21, and a clamping hole is provided on the fixed clamping plate 24, and the clamping hole is used to fix the small elbow 111 and the large elbow 113 of the serpentine tube 1. The frame 21, the liquid inlet manifold 22, the liquid outlet manifold 23 and the fixed clamping plate 24 are all existing structures and will not be described in detail here.
[0039] See attached Fig. 9 Since the width and height of the small elbow 111 are smaller than those of the large elbow 113 , in the projection plane parallel to the serpentine tube 1 , the small elbow 111 of one serpentine tube 1 is located inside the large elbow 113 of the adjacent serpentine tube 1 , and there is a gap L between the small elbow 111 and the large elbow 113 .
[0040] By the attached Figure 7-9 It can be seen that since the two adjacent serpentine tubes 1 are arranged in a spatially staggered manner, no matter how the spacing is reduced, the two adjacent serpentine tubes 1 cannot touch each other. In this way, there will be no anti-corrosion blind area during zinc immersion, and the zinc liquid can completely cover the outer surface of the serpentine tube 1 and form a complete zinc coating. Only when a complete zinc coating is formed can the heat exchange core 2 work for a long time without rusting and perforation.
[0041] It is noteworthy that the anti-corrosion of the serpentine pipe 1 is not limited to zinc immersion, and other anti-corrosion methods may also be used, such as spray painting, etc. In addition, the serpentine pipe 1 is not limited to using carbon steel pipes, and stainless steel pipes and aluminum pipes may also be used.
[0042] It is also worth noting that the present arrangement method is not limited to two serpentine tubes 1 , and three or four serpentine tubes 1 may also be arranged in a staggered manner.
[0043] Preferably, the minimum distance between two adjacent serpentine tubes 1 is greater than the radius of the serpentine tube 1. If the distance is too small (less than 2 mm), although there will be no close contact, bubbles will be generated between the serpentine tubes 1 during zinc dipping, and the zinc liquid cannot enter, and the galvanized layer cannot be formed.
[0044] See attached Fig.10In order to increase the arrangement density of the serpentine tubes 1 and take into account ventilation and mist dispersion, the hole spacing of the clamping holes is 1.8-2.2 times the diameter of the serpentine tubes 1. In this embodiment, the hole spacing H of the clamping holes is twice the diameter of the serpentine tubes 1, and the spacing between the serpentine tubes 1 on the liquid inlet manifold 22 and the liquid outlet manifold 23 is also twice the diameter of the serpentine tubes 1.
[0045] An evaporative cooling device mainly consists of six parts: a fan, a water pump, a heat exchange core 2, a spray component, a water collector and a box. The heat exchange core 2 is made of the following Figure 7-9 The structure of the serpentine tube 1 in the heat exchange core 2 is attached Figure 3-6 structure.
[0046] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the attached claims and their equivalents.
Claims
1. A serpentine pipe, which is formed by connecting multiple pipe units, and is characterized by: Each pipe unit is composed of a small elbow, a large elbow and two straight pipes. The width and height of the small elbow are smaller than those of the large elbow. The straight pipe is connected between the small elbow and the large elbow and is tangent to the small elbow and the large elbow.
2. A serpentine tube as claimed in claim 1, characterized in that: The small elbow is a small arc elbow, and the large elbow is a large arc elbow or a bent elbow.
3. A serpentine tube as claimed in claim 2, characterized in that: The bending head has two bending angles, and the angles of the bending angles are 92-100°.
4. A serpentine tube as claimed in claim 2, characterized in that: The radius of the small arc elbow is 2-5 times the diameter of the serpentine pipe.
5. A serpentine tube as claimed in claim 1, characterized in that: The diameter of the serpentine tube is any one of 14, 24, 25, 32, 35, and 38.
6. A heat exchange core, characterized in that: A plurality of serpentine tubes are arranged in the heat exchange core, and two adjacent serpentine tubes are arranged in parallel and staggered manner; in a projection plane parallel to the serpentine tubes, the projection area of the small elbow of one serpentine tube is located within the projection area of the large elbow of the adjacent serpentine tube.
7. A heat exchange core according to claim 6, characterized in that: The minimum distance between two adjacent serpentine tubes is greater than the radius of the serpentine tubes.
8. A heat exchange core as claimed in claim 6, characterized in that: A frame is arranged in the heat exchange core, and a liquid inlet manifold and a liquid outlet manifold are arranged at both ends of the frame. The inlet and outlet ends of the plurality of serpentine tubes are respectively connected to the liquid inlet manifold and the liquid outlet manifold.
9. A heat exchange core as claimed in claim 8, characterized in that: A fixed clamping plate is arranged on the frame, and clamping holes are arranged on the fixed clamping plate. The clamping holes are used to fix the small elbow and the large elbow, and the hole spacing of the clamping holes is 1.8-2.2 times of the diameter of the serpentine pipe.
10. An evaporative cooling device, characterized in that: Including heat exchange core.