Fin type heat exchanger with fins convenient to replace

Abstract

The utility model discloses a fin type heat exchanger with fins convenient to replace, which belongs to the technical field of heat exchangers and comprises a frame, a base tube and a plurality of fin structures, the base tube is of a snakelike structure, the frame comprises two oppositely arranged fixing plates, the plurality of fin structures are fixedly mounted outside the base tube along the extension direction of the base tube, and the fin structures are fixedly mounted on the base tube along the extension direction of the base tube. The heat exchanger is characterized in that the fin structure comprises two fin subsections matched with each other and an arc-shaped clamping spring connected between the two fin subsections, each fin subsection comprises an arc-shaped piece and a fin fixedly installed on the arc-shaped piece, the two arc-shaped pieces wrap the outer portion of the base tube, and the arc-shaped clamping springs are made of elastic materials. And the two ends of the arc-shaped clamp spring are respectively clamped and embedded on the two arc-shaped sheets. According to the fin type heat exchanger, the fin subsections can be replaced only by taking down the arc-shaped clamping spring from the position between the two fin subsections, operation is easy and convenient, production is facilitated, and economic benefits of enterprises are greatly increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, especially, relate to a fin heat exchanger convenient to replace fin. BACKGROUND

[0002] Fin heat exchanger is a kind of heat exchange equipment widely used in various industrial fields, its main role is through fin extension heat exchange area, improve heat exchange efficiency, to realize the effective transmission and utilization of heat energy.Fin heat exchanger mainly includes base pipe, fin and frame, base pipe is fixedly installed on the frame, fin is closely attached to the outer surface of base pipe, to strengthen the convective heat transfer with surrounding cold medium, the setting form of fin can be divided into spiral fin and longitudinal fin according to structure.

[0003] Fin plays important roles in enhancing heat transfer efficiency, improving heat dissipation performance, reducing flow resistance and strengthening mechanical strength in fin heat exchanger, whether fin can work normally directly determines the heat exchange efficiency of heat exchanger.At present, the fin on most heat exchangers is fixedly connected on base pipe by welding, once one or more fins are damaged due to corrosion or collision deformation, the heat exchange efficiency of heat exchanger will decrease, if the heat exchange efficiency is guaranteed, only the entire heat exchanger can be replaced, which undoubtedly increases the use cost.In order to overcome the above-mentioned defects, the Chinese utility model patent with publication number CN221123083U discloses a fin heat exchanger, which comprises a fixed frame and a fin assembly;The fixed frame: two corresponding mounting holes are formed on the left and right sides, two mounting holes are fixedly provided with a serpentine pipe, the right end of the serpentine pipe is provided with a filter assembly;Fin assembly: including fixed ring, arc-shaped heat-conducting sheet and clamping column, the surface of the serpentine pipe is fixedly provided with uniformly distributed fixed ring, the surface of the fixed ring is fixedly provided with arc-shaped groove, two corresponding arc-shaped heat-conducting sheets are arranged in the arc-shaped groove, two corresponding clamping columns are fixedly arranged on the rear side of the front arc-shaped heat-conducting sheet, two corresponding clamping holes are formed on the front side of the rear arc-shaped heat-conducting sheet, the clamping column is clamped in the clamping hole, the surface of the fixed ring is provided with a fixing assembly, which can conveniently replace the fin.Specifically, when the arc-shaped heat-conducting sheet is damaged, two slide rods on the surface of the corresponding fixed ring can be pulled out, so that the two arc-shaped heat-conducting sheets to be replaced are separated from the surface of the fixed ring, then the two arc-shaped heat-conducting sheets to be replaced are removed, two new arc-shaped heat-conducting sheets are replaced, then the two slide rods are loosened, at this time, the two slide rods enter the two clamping holes formed on the side of the two new arc-shaped heat-conducting sheets under the action of two springs, so that the replacement is completed.However, in the production process, the fixing assembly structure including fixed plate, slide rod, connecting disc and spring is relatively complex, and there are many parts, which is not conducive to efficient production, and further affects the economic benefits of enterprises. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a finned heat exchanger that is easy to replace fins is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a finned heat exchanger that facilitates fin replacement, comprising a frame, a base tube, and a finned structure. The base tube has a serpentine structure. The frame includes two oppositely arranged fixing plates. The finned structure has multiple finned structures, which are fixedly installed on the outside of the base tube along its extension direction. Each finned structure includes two mutually cooperating fin portions and an arc-shaped retaining spring connecting the two fin portions. Each fin portion includes an arc-shaped piece and fins fixedly installed on the arc-shaped piece. The two arc-shaped pieces hug the outside of the base tube. The arc-shaped retaining spring is made of elastic material, and its two ends are respectively embedded in the two arc-shaped pieces.

[0006] Furthermore, the fins are fan-shaped structures and perpendicular to the central axis of the base tube. The center of the fins is concentric with the center of the arc-shaped pieces. The two arc-shaped pieces hug each other to form a tubular structure that is sleeved on the outside of the base tube. The two fins are mated together to form a circular structure.

[0007] Furthermore, the fin is located in the middle of the arc-shaped plate.

[0008] Furthermore, each of the fin structures has two arc-shaped retaining rings, which are located on opposite sides of the fin.

[0009] Furthermore, a slot is provided on the outer wall of the arc-shaped piece, and two opposite ends of the arc-shaped retaining spring are respectively formed with locking protrusions. The two locking protrusions are respectively locked with the two slots on the two arc-shaped pieces that hug each other.

[0010] Furthermore, each of the arc-shaped pieces has two slots on the same side of the fin, and the two arc-shaped pieces on the same side of the fin are fixedly connected by two symmetrical arc-shaped retaining springs.

[0011] Furthermore, the base tube includes a plurality of parallel straight tubes and a bent tube connected to the end of the straight tube. The straight tube is located between the two fixed plates, the fin structure is fixedly connected to the straight tube, and the bent tube is located on the other side of the fixed plate relative to the straight tube.

[0012] Furthermore, a limiting post is fixedly connected between the two fixing plates, and the limiting post penetrates through the fin.

[0013] Furthermore, the arc-shaped retaining ring is made of spring steel.

[0014] The beneficial effects of this utility model are as follows: This finned heat exchanger facilitates fin replacement. When a fin is damaged, the user can use pliers to force the arc-shaped retaining spring to deform, thereby releasing the locking relationship between the arc-shaped retaining spring and the arc-shaped fin. After the arc-shaped retaining spring is removed, the two fin sections can be separated, allowing the user to replace the damaged fin section. When installing a new fin section, simply use both ends of the arc-shaped retaining spring to snap onto the two arc-shaped fins respectively. This avoids the need to completely replace the heat exchanger when a single fin is damaged. Furthermore, the operation is simple and convenient, which is beneficial to production and greatly increases the economic benefits for enterprises. Attached Figure Description

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

[0016] Figure 1 This is a perspective view of the finned heat exchanger of this utility model, which allows for easy replacement of fins.

[0017] Figure 2 yes Figure 1 The front view of a finned heat exchanger is shown, facilitating fin replacement.

[0018] Figure 3 yes Figure 1 A magnified view of point A in the finned heat exchanger shown, which facilitates fin replacement.

[0019] Figure 4 yes Figure 2 The finned heat exchanger shown is a cross-sectional view along BB for easy fin replacement.

[0020] Figure 5 yes Figure 1 The image shows a top view of a finned heat exchanger that facilitates fin replacement.

[0021] In the diagram: 1. Frame, 11. Fixing plate, 12. Limiting post, 13. Locking nut, 14. Connecting plate, 2. Base tube, 21. Straight tube, 22. Bend tube, 3. Fin structure, 31. Fin section, 311. Arc-shaped piece, 3111. Slot, 312. Fin, 32. Arc-shaped slot, 321. Inserting protrusion. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0023] Please see Figures 1-5This utility model provides a finned heat exchanger with easy fin replacement, including a frame 1, a base tube 2, and finned structures 3. The base tube 2 has a hollow serpentine structure. The frame 1 includes two oppositely arranged fixing plates 11. There are multiple finned structures 3, which are fixedly installed on the outside of the base tube 2 along the extension direction of the base tube 2. The finned structure 3 includes two mutually cooperating fin portions 31 and an arc-shaped retaining spring 32 connecting the two fin portions 31. The fin portion 31 includes an arc-shaped piece 311 and a fin 312 fixedly installed on the arc-shaped piece 311. The two arc-shaped pieces 311 hug the outside of the base tube 2. The arc-shaped retaining spring 32 is made of elastic material, and its two ends are respectively embedded in the two arc-shaped pieces 311.

[0024] This utility model discloses a finned heat exchanger with easily replaceable fins. The frame 1 serves as a support to support and fix the base tube 2. In use, the serpentine base tube 2 is set horizontally, and hot steam or hot water is introduced into the base tube 2. When cold air passes through the heat exchanger from bottom to top, the heat on the base tube 2 is transferred to the fins 312 to increase the heat exchange area. At this time, the heat on the fins 312 can exchange heat with the rising cold air, thereby heating the cold air.

[0025] When one of the fins 312 is damaged due to corrosion or deformation, the user can use pliers to force the arc-shaped retaining spring 32, made of elastic material, to deform it, thereby releasing the locking relationship between the arc-shaped retaining spring 32 and the arc-shaped plate 311. After the arc-shaped retaining spring 32 is removed, the two fin sections 31 can be separated, and the user can then replace the damaged fin section 31. When installing a new fin section 31, simply use the two ends of the arc-shaped retaining spring 32 to snap onto the two arc-shaped plates 311 respectively. This avoids the need to completely replace the heat exchanger when a single fin 312 is damaged. Furthermore, the operation is simple and convenient, which is beneficial to production and greatly increases the company's economic benefits.

[0026] Please see Figure 3 , Figure 4In this embodiment, the fin 312 has a fan-shaped structure and is perpendicular to the central axis of the base tube 2. The center of the fin 312 is concentric with the center of the arc-shaped piece 311. The two arc-shaped pieces 311 are joined together to form a tubular structure that fits over the base tube 2. The two fins 312 are mated together to form a complete circular structure. It should be noted that the inner wall of the tubular structure formed by the two arc-shaped pieces 311 is in contact with the outer wall of the base tube 2, thereby ensuring that the heat on the base tube 2 can be fully transferred to the arc-shaped pieces 311 and then to the fin 312. As a preferred embodiment, the fin 312 is located in the middle of the arc-shaped piece 311, that is, the two opposite ends of the arc-shaped piece 311 extend beyond the opposite end faces of the fin 312. This increases the contact area between the arc-shaped piece 311 and the base tube 2, thereby increasing the heat conduction area and facilitating efficient heat exchange. In addition, the fin 312 is fixedly connected to the arc-shaped piece 311 by welding.

[0027] In this embodiment, each fin structure 3 has two arc-shaped retaining springs 32, which are located on opposite sides of the fin 312. By setting the arc-shaped retaining springs 32 on both sides, the arc-shaped pieces 311 are simultaneously fixed, increasing the locking stability of the arc-shaped retaining springs 32 and preventing relative movement between the two arc-shaped pieces 311. At the same time, it also makes the arc-shaped pieces 311 fit more tightly against the outside of the base tube 2, effectively preventing the arc-shaped pieces 311 from moving along the axial direction of the base tube 2.

[0028] To facilitate the installation of the arc-shaped retaining spring 32, a retaining groove 3111 is formed on the outer wall of the arc-shaped piece 311. The two opposite ends of the arc-shaped retaining spring 32 form retaining protrusions 321, which respectively engage with the two retaining grooves 3111 on the two interlocking arc-shaped pieces 311. Furthermore, each arc-shaped piece 311 has two retaining grooves 3111 on the same side of the fin 312. Thus, the two arc-shaped pieces 311 are fixedly connected on the same side of the fin 312 by two symmetrical arc-shaped retaining springs 32, greatly increasing the connection reliability and further preventing the arc-shaped pieces 311 from easily separating.

[0029] In this embodiment, the arc-shaped retaining ring 32 is made of spring steel. Spring steel has good elastic deformation capacity, as well as high tensile strength, elastic limit, and fatigue strength, and can maintain stable performance under long-term alternating stress, thus extending the service life of the arc-shaped retaining ring 32.

[0030] In this embodiment, the base tube 2 includes multiple parallel straight tubes 21 and a bent tube 22 connected to the end of the straight tube 21. The straight tube 21 is located between two fixed plates 11, and the fin structure 3 is fixedly connected to the straight tube 21. The bent tube 22 is located on the other side of the fixed plate 11 relative to the straight tube 21. A limiting post 12 is fixedly connected between the two fixed plates 11. The limiting post 12 slidably engages with and penetrates the fin 312. When the limiting post 12 penetrates the fin 312, it can limit the fin 312 and prevent the fin structure 3 from rotating along the central axis of the straight tube 21. In addition, the limiting post 12 and the bent tube 22 are staggered to avoid the bent tube 22 interfering with the installation of the limiting post 12.

[0031] Before replacing the fin structure 3, first remove the limiting post 12 from the fin 312 and the fixing plate 11. After replacing the fin structure 3, re-pass the limiting post 12 through the fin 312 and fix it to the fixing plate 11. In this embodiment, the opposite ends of the limiting post 12 are set as threaded sections, which penetrate the fixing plate 11. Locking nuts 13 are installed on the threaded sections. By locking the locking nuts 13 at both ends, the limiting post 12 can be fixed to the fixing plate 11.

[0032] The frame 1 also includes a connecting plate 14, which is fixedly connected to the ends of the two fixed plates 11 to achieve a relative fixed connection between the two fixed plates 11. In this embodiment, the connecting plate 14 is fixedly connected to the fixed plates 11 by bolts.

[0033] In this embodiment, the base tube 2 is made of copper and the finned portion 31 is made of aluminum to ensure heat exchange efficiency. At the same time, it reduces the weight of the heat exchanger, achieves lightweight production, and also ensures structural strength.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A finned heat exchanger with easily replaceable fins, comprising a frame, a base tube, and finned structures, wherein the base tube has a serpentine structure, the frame includes two opposing fixing plates, and the finned structures are multiple in number, wherein the multiple finned structures are fixedly installed on the outside of the base tube along the extension direction of the base tube, characterized in that: The fin structure includes two cooperating fin portions and an arc-shaped retaining spring connecting the two fin portions. Each fin portion includes an arc-shaped piece and a fin fixedly mounted on the arc-shaped piece. The two arc-shaped pieces hug the outside of the base tube. The arc-shaped retaining spring is made of elastic material, and its two ends are respectively embedded in the two arc-shaped pieces.

2. The finned heat exchanger with easily replaceable fins as described in claim 1, characterized in that: The fins are fan-shaped and perpendicular to the central axis of the base tube. The center of the fins is concentric with the center of the arc-shaped piece. The two arc-shaped pieces hug each other to form a tubular structure that is sleeved on the outside of the base tube. The two fins are mated together to form a circular piece structure.

3. The finned heat exchanger with easily replaceable fins as described in claim 2, characterized in that: The fin is located in the middle of the arc-shaped plate.

4. The finned heat exchanger with easily replaceable fins as described in claim 1, characterized in that: Each of the fin structures has two arc-shaped retaining rings, which are located on opposite sides of the fin.

5. The finned heat exchanger with easily replaceable fins as described in claim 4, characterized in that: The outer wall of the arc-shaped piece is provided with a slot, and the two opposite ends of the arc-shaped retaining spring are respectively formed with locking protrusions. The two locking protrusions are respectively locked with the two slots on the two arc-shaped pieces that hug each other.

6. The finned heat exchanger with easily replaceable fins as described in claim 5, characterized in that: Each of the arc-shaped pieces has two slots on the same side of the fin, and the two arc-shaped pieces are fixedly connected on the same side of the fin by two symmetrical arc-shaped retaining springs.

7. The finned heat exchanger with easily replaceable fins as described in claim 1, characterized in that: The base tube includes a plurality of parallel straight tubes and a bent tube connected to the end of the straight tube. The straight tube is located between two fixed plates. The fin structure is fixedly connected to the straight tube. The bent tube is located on the other side of the fixed plate relative to the straight tube.

8. The finned heat exchanger with easily replaceable fins as described in claim 7, characterized in that: A limiting post is fixedly connected between the two fixing plates, and the limiting post is engaged to penetrate the fin.

9. The finned heat exchanger with easily replaceable fins as described in claim 1, characterized in that: The arc-shaped retaining ring is made of spring steel.

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