Copper tube finned heat exchanger for refrigeration system

Abstract

This invention relates to the field of finned heat exchanger technology, and more particularly to a copper tube finned heat exchanger for a refrigeration system. It includes two mounting brackets, both brackets having equally spaced cooling tubes detachably mounted on them. All cooling tubes are provided with fins. The two mounting brackets share two screws, each screw threaded with two bolts for securing adjacent screws to adjacent mounting brackets. A connecting pipe is provided on one side of each mounting bracket, connecting to equally spaced connectors. Equally spaced sliding posts are provided within the connecting pipe. The fins are provided with connecting members. This invention eliminates the tube expansion process in existing heat exchanger manufacturing by using several equally spaced sets of connecting members on the fins, utilizing the clamping action of the connecting members to connect the fins and cooling tubes, thus simplifying the production process and improving efficiency.

Description

Technical Field

[0001] This invention relates to the field of finned heat exchanger technology, and more particularly to a copper tube finned heat exchanger for a refrigeration system. Background Technology

[0002] Copper tube finned heat exchangers are high-efficiency gas-liquid / gas-gas heat exchange devices with copper tubes as the base and external fins. Their core is to solve the problem of low gas heat transfer coefficient by significantly expanding the heat exchange area on the air side. They are widely used in air conditioning, refrigeration, HVAC, industrial cooling and other fields.

[0003] In the existing copper tube finned heat exchanger manufacturing process, the fins need to be arranged neatly first, then the copper tubes are passed through the holes on the fins, and then the tubes are expanded to make the fins fit the copper tubes. After that, the elbows are welded to form a complete flow channel. In the above tube expansion process of existing copper tube finned heat exchangers, if the tube expansion tools are worn or the parameters are not adjusted properly, it will lead to the tubes not expanding tightly or expanding too thinly. Both of these will affect the heat exchanger's heat exchange capacity. Moreover, after the tubes are expanded, the copper tubes and fins become one piece. When the heat exchanger is damaged, it is not possible to disassemble and repair it in a modular way. Only the entire heat exchanger can be replaced, resulting in excessive operating costs. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a copper tube finned heat exchanger for a refrigeration system.

[0005] The technical solution is as follows: A copper tube finned heat exchanger for a refrigeration system includes two mounting brackets. Both mounting brackets are detachably mounted with equally spaced cooling tubes. All cooling tubes are provided with equally spaced fins. The two mounting brackets are provided with two screws, each screw threaded with two bolts. The bolts are used to fix adjacent screws to adjacent mounting brackets. A connecting pipe is provided on one side of each mounting bracket. The connecting pipe is connected to equally spaced connectors, which are connected to adjacent cooling tubes. Equally spaced sliding columns are provided inside the connecting pipe, the number of which is equal to the number of cooling tubes. The fins are provided with several sets of equally spaced connectors. Each set of connectors is circumferentially equally spaced. The number of sets of connectors and the number of connectors are twice the number of cooling tubes. The connectors are pressed against adjacent cooling tubes.

[0006] Preferably, the connector consists of an inclined portion, a heat-conducting portion, and a blocking portion. The inclined portion is fixedly connected to the adjacent fin, the heat-conducting portion is attached to the adjacent cooling pipe, and the blocking portion is pressed against the adjacent fin.

[0007] Preferably, the connecting pipe is fixedly connected to two connecting brackets, the two connecting brackets are rotatably connected to two rotating rods, and the two rotating rods are slidably connected to several groups of equally spaced sliding plates. The number of groups of sliding plates is twice the number of cooling pipes, and each group of sliding plates contains two plates. Each sliding plate is provided with a connecting clamp, and two connecting clamps in the same group jointly connect adjacent cooling pipes to adjacent connecting heads.

[0008] Preferably, the connector is fixed with a sealing ring, which is used to improve the sealing between the connector and the adjacent cooling pipe.

[0009] Preferably, both the cooling pipe and the connector are provided with a connecting groove, and the connecting groove is provided with an inclined surface, and the connecting clamp is pressed against the inclined surface of the adjacent connecting groove.

[0010] Preferably, the rotating rod is fixed with several sets of threaded protrusions that are evenly distributed. The number of sets of threaded protrusions is equal to the number of sets of sliding plates. Each sliding plate corresponds to two threaded protrusions, and the threaded protrusions are connected to the adjacent sliding plates by threaded transmission.

[0011] Preferably, the two threaded protrusions corresponding to the same sliding plate are symmetrically distributed, and the two rotating rods are driven by a gear set.

[0012] Preferably, the sliding plate is slidably connected to the connecting hoop, and the sliding plate is threadedly connected to an adjusting member, which is rotatably connected to the adjacent connecting hoop.

[0013] Preferably, the connector is slidably connected with a gate and a connecting rod, the gate is fixedly connected to the adjacent connecting rod, and the two connecting rods corresponding to the same cooling pipe are jointly fixedly connected with a connecting plate.

[0014] Preferably, the connecting pipe is fixedly connected to spare pipes that are evenly spaced apart. The number of connectors is twice the number of spare pipes. Each spare pipe has two connections with the connecting pipe. The connections between the two connectors and the connecting pipe corresponding to the same cooling pipe and the two connections between the spare pipe and the connecting pipe are staggered. The connecting pipe is slidably connected to the sliding column. The connecting pipe is fixedly connected to an evenly spaced fixing ring. The number of fixing rings is equal to the number of sliding columns. A spring is provided between the sliding column and the corresponding fixing ring. The sliding column is used to control the connection between the spare pipe and the connecting pipe at the connection point between two adjacent connectors of the corresponding cooling pipe.

[0015] The beneficial effects of adopting the above solution are: by setting several sets of connectors evenly distributed on the fins, the connection between the fins and the cooling tubes is realized by the clamping of the connectors, thereby eliminating the tube expansion process in the existing heat exchanger production process, simplifying the production process and improving production efficiency.

[0016] The adjacent cooling pipes are connected to the adjacent connectors by two connecting clamps, thus realizing the modular design of this device. When part of the device is damaged, only the damaged part needs to be replaced, instead of replacing the entire device, reducing maintenance costs.

[0017] When the cooling pipe is blocked, the sliding column is moved to change the water flow path, thus maintaining the normal operation of the device and preventing it from becoming unusable due to blockage. Furthermore, by blocking the gate and adjusting the regulating components, the blocked cooling pipe can be removed and replaced individually, enabling maintenance of the device without shutting down. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the bolt and connecting pipe of the present invention; Figure 3 This is an exploded view of the cooling pipe and fins of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the sliding column and fixing ring of the present invention; Figure 6 This is an exploded view of the sliding plate and connecting hoop of the present invention; Figure 7 This is a three-dimensional structural diagram of the connector, gate, and connecting rod of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1-Mounting bracket, 2-Cooling pipe, 201-Connecting groove, 3-Fin, 4-Screw, 5-Bolt, 6-Connecting pipe, 7-Connector, 8-Connector, 801-Inclined part, 802-Heat-conducting part, 803-Blocking part, 9-Connecting bracket, 10-Rotating rod, 11-Sliding plate, 12-Connecting clamp, 13-Sealing ring, 14-Threaded protrusion, 15-Adjusting component, 16-Gate, 17-Connecting rod, 18-Connecting plate, 19-Spare pipe, 20-Sliding column, 21-Fixing ring, 22-Spring. Detailed Implementation

[0020] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0021] Example 1 Existing copper tube finned heat exchangers have a complex manufacturing process, are difficult to assemble, and cannot be modularly disassembled and repaired after damage occurs during use, resulting in high maintenance costs.

[0022] A copper tube finned heat exchanger for a refrigeration system, such as Figures 1-6 As shown, the device includes two mounting brackets 1, both of which are detachably mounted with equally spaced cooling pipes 2. The cooling pipes 2 are U-shaped copper pipes, and all cooling pipes 2 are provided with equally spaced fins 3 to increase the heat exchange area. The two mounting brackets 1 are also equipped with two screws 4, each threaded at both ends. Two bolts 5 are threaded onto the screws 4, securing adjacent screws 4 to adjacent mounting brackets 1, thus fixing the two mounting brackets 1 in place. A connecting pipe 6 is located on the right side of each mounting bracket 1, and an equally spaced connector 7 connects to the left side of the connecting pipe 6. The connector 7 communicates with adjacent cooling pipes 2. Equally spaced sliding columns 20 are installed inside the connecting pipe 6. The sliding columns 20 are used to control the flow direction of water in the connecting pipe 6. The number of sliding columns 20 is equal to the number of cooling pipes 2. The fins 3 are provided with several sets of connectors 8 that are evenly distributed. Each set of connectors 8 is circumferentially evenly distributed and has no less than two connectors. The figure shows two connectors as an example. The connectors 8 are made of elastic thermally conductive material. The number of sets of connectors 8 and the number of connectors 7 are twice the number of cooling pipes 2. The connectors 8 and adjacent cooling pipes 2 are squeezed against each other. The connection between the cooling pipes 2 and the fins 3 is achieved by squeezing the cooling pipes 2 with the connectors 8, thereby realizing the modular installation of this device. When a part is damaged, the damaged part can be replaced and repaired without replacing the heat exchanger. The connector 8 consists of an inclined part 801, a heat-conducting part 802, and a blocking part 803. The inclined part 801 is fixedly connected to the adjacent fin 3. The inclined part 801 is inclined. During the installation of the cooling pipe 2, the inclined part 801 is squeezed, causing the inclined part 801 to deform. The heat-conducting part 802 is in contact with the adjacent cooling pipe 2. After the cooling pipe 2 is inserted between the two connectors 8, the heat-conducting part 802 is in contact with the cooling pipe 2 under the action of the inclined part 801. The blocking part 803 is squeezed against the adjacent fin 3, thereby controlling the distance between the two adjacent fins 3 and ensuring the uniform distribution of the fins 3.

[0023] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, a connecting frame 9 is fixed to each of the upper and lower ends of the connecting pipe 6. The two connecting frames 9 are rotatably connected to two rotating rods 10. The two rotating rods 10 are slidably connected to several groups of equally spaced sliding plates 11. The number of groups of sliding plates 11 is twice the number of cooling pipes 2. Each group of sliding plates 11 contains two sliding plates 11. The sliding plates 11 are equipped with connecting clamps 12, which are semi-circular arc-shaped. The two connecting clamps 12 in the same group connect the adjacent cooling pipe 2 to the adjacent connecting head 7, thereby realizing the detachable connection between the cooling pipe 2 and the connecting head 7. The connecting head 7 is fixed with a sealing ring 13. The sealing ring 13 is used to improve the sealing performance between the connecting head 7 and the adjacent cooling pipe 2. The sealing ring 13 is squeezed by the connecting head 7 and the cooling pipe 2, making the sealing performance between the connecting head 7 and the cooling pipe 2 even stronger. Both the cooling pipe 2 and the connector 7 are provided with a connecting groove 201, and the connecting groove 201 is provided with an inclined surface. The connecting clamp 12 and the inclined surface of the adjacent connecting groove 201 are pressed against each other. By moving the two connecting clamps 12 in the same group towards each other, the inclined surface of the connecting groove 201 is pressed, thereby pressing the sealing ring 13 to improve the sealing performance.

[0024] like Figure 5 As shown, the rotating rod 10 is fixed with several sets of equally spaced threaded protrusions 14. The number of sets of threaded protrusions 14 is equal to the number of sets of sliding plates 11. Each sliding plate 11 corresponds to two threaded protrusions 14. The threaded protrusions 14 and adjacent sliding plates 11 are connected by threaded transmission. The position of the sliding plate 11 is adjusted by rotating the threaded protrusions 14, thereby controlling the connecting clamp 12. The two threaded protrusions 14 corresponding to the same sliding plate 11 are symmetrically distributed. The two rotating rods 10 are connected by gear transmission. When one rotating rod 10 is rotated, the other rotating rod 10 rotates synchronously. The rotation directions of the two rotating rods 10 are opposite. The two rotating rods 10 drive the two sliding plates 11 in the same group to move towards each other, thereby making the operation of the sliding plates 11 simpler.

[0025] Before using this device for heat exchange, it must first be assembled. During assembly, first arrange and fix the two mounting brackets 1 and several fins 3 neatly, with the side of the fins 3 fixed to the connector 8 facing right. Then, insert the cooling pipe 2 into the mounting bracket 1 and the fins 3. During the insertion process, the cooling pipe 2 presses against the corresponding connector 8, and the inclined part 801 deforms under the pressure of the cooling pipe 2. Then, the cooling pipe 2 comes into contact with the heat-conducting part 802. The heat-conducting part 802 adheres to the cooling pipe 2 under the elastic action of the inclined part 801. After the cooling pipe 2 is inserted, fix the two mounting brackets 1 with two screws 4 and four bolts 5. The two mounting brackets 1 press against the fins 3 on the left and right sides, causing the fins 3 to press against the blocking parts 803 on adjacent fins 3, thus unifying the distance between adjacent fins 3. Then, connect the connector 7 to the... Align the corresponding cooling pipes 2, then rotate one of the rotating rods 10. The rotating rod 10 drives the other rotating rod 10 to rotate through the gear set. The two rotating rods 10 drive the sliding plate 11 to move through the threaded protrusion 14 on their respective parts. The two sliding plates 11 in the same group move towards each other and drive the two connecting clamps 12 to insert into the corresponding two connecting grooves 201. During the process of the connecting clamps 12 being inserted into the connecting grooves 201, the inclined surface is squeezed, so that the connecting head 7 and the cooling pipe 2 pressurize the adjacent sealing rings 13, thereby enhancing the sealing effect. Then, the lower side of the connecting pipe 6 is used as the water inlet and the upper side as the water outlet. The water flows in from the lower side of the connecting pipe 6 and then into the cooling pipe 2, and then into the connecting pipe 6 again. The above process is repeated until the water flows through all the cooling pipes 2 and then flows out from the upper side of the connecting pipe 6. The water undergoes heat exchange in the cooling pipe 2.

[0026] Example 2 Based on Example 1, such as Figure 5 and Figure 6 As shown, the sliding plate 11 is slidably connected to the connecting hoop 12, and the sliding plate 11 is threadedly connected to the adjusting member 15. The adjusting member 15 is rotatably connected to the adjacent connecting hoop 12. When the adjusting member 15 is rotated, one connecting hoop 12 can be controlled individually, thereby realizing the individual replacement of the damaged part.

[0027] like Figure 5 and Figure 7 As shown, the connector 7 is slidably connected to a gate 16 and a connecting rod 17. The gate 16 is used to control the connection of the connector 7. When it is necessary to disassemble the corresponding cooling pipe 2, the gate 16 can block the connector 7, so that the heat exchanger can still work normally during maintenance. The gate 16 is fixedly connected to the adjacent connecting rod 17, and the two connecting rods 17 corresponding to the same cooling pipe 2 are fixedly connected to a connecting plate 18.

[0028] like Figure 5As shown, the connecting pipe 6 is fixedly connected to spare pipes 19 at equal intervals. The number of connectors 7 is twice the number of spare pipes 19. Each spare pipe 19 has two connections to the connecting pipe 6. The connections between the two connectors 7 and the connecting pipe 6 corresponding to the same cooling pipe 2, and the two connections between the spare pipe 19 and the connecting pipe 6, are staggered. The distribution of all connectors 7 and all connections between spare pipes 19 and the connecting pipe 6 from bottom to top is: connector 7, spare pipe 19, connector 7, spare pipe 19. The connecting pipe 6 is slidably connected to the sliding column 20. Equally spaced fixing rings 21 are fixedly connected inside the connecting pipe 6. The number of fixing rings 21 is equal to the number of sliding columns 20. A spring 22 is provided between the moving column 20 and the corresponding fixed ring 21. The sliding column 20 is used to control the connection between the spare pipe 19 and the connecting pipe 6 at the connection point between two adjacent connectors 7 of the corresponding cooling pipe 2. When the cooling pipe 2 is blocked, the pressure on the lower side of the corresponding sliding column 20 is greater than the pressure on the upper side. The sliding column 20 moves upward and compresses the adjacent spring 22. At the same time, the sliding column 20 releases the blockage of the spare pipe 19, allowing water to flow through the spare pipe 19 into the other side of the sliding column 20. This ensures sufficient water flow in the remaining cooling pipes 2 above the blocked cooling pipe 2, thereby ensuring the heat exchange efficiency of the water flow and reducing the impact of the blockage of the cooling pipe 2 on the heat exchange.

[0029] During heat exchange using this device, when a cooling pipe 2 becomes blocked (taking the lower cooling pipe 2 as an example), as the blockage deepens, the pressure difference across the sliding column 20 increases. Under this pressure difference, the sliding column 20 moves upward and compresses the adjacent spring 22, gradually releasing the blockage on the adjacent spare pipe 19. This compensates for the reduced flow rate caused by the blockage, ensuring normal heat exchange. When the cooling pipe 2 is completely blocked, the blockage on the spare pipe 19 by the sliding column 20 is completely released, allowing water to bypass the blocked cooling pipe 2 and ensuring the normal operation of the remaining components. Then, the corresponding connecting plate 18 is moved to connect... Plate 18 drives two connecting rods 17 to move, and connecting rods 17 drive gate 16 to move, so that gate 16 blocks the adjacent connector 7. Then, rotate the corresponding four adjusting parts 15, and the adjusting parts 15 drive the adjacent connecting clamps 12 to move, so that the four connecting clamps 12 release the lock on the cooling pipe 2 and the two connectors 7. Then, remove the blocked cooling pipe 2 for replacement. After replacement, lock the connecting clamps 12 on the cooling pipe 2 and connector 7 again, and open gate 16. At this time, the pressure difference between the upper and lower sides of sliding column 20 is restored, and sliding column 20 returns to its original position under the action of spring 22, so that the water flow returns to the normal flow path, thereby realizing non-stop maintenance of this device.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A copper tube finned heat exchanger for a refrigeration system, comprising two mounting brackets (1), both mounting brackets (1) being detachably mounted with equally spaced cooling tubes (2), and all the cooling tubes (2) being provided with equally spaced fins (3), characterized in that: It also includes two screws (4), both of which are mounted on two mounting brackets (1). The screws (4) are threaded with two bolts (5). The bolts (5) are used to fix the adjacent screws (4) to the adjacent mounting brackets (1). A connecting pipe (6) is provided on one side of the two mounting brackets (1). The connecting pipe (6) is connected to equally spaced connectors (7). The connectors (7) are connected to the adjacent cooling pipes (2). Equally spaced sliding columns (20) are provided inside the connecting pipe (6). The number of sliding columns (20) is equal to the number of cooling pipes (2). The fins (3) are provided with several sets of equally spaced connectors (8). Each set of connectors (8) is circumferentially equally spaced. The number of sets of connectors (8) and the number of connectors (7) are twice the number of cooling pipes (2). The connectors (8) and the adjacent cooling pipes (2) are pressed against each other.

2. A copper tube finned heat exchanger for a refrigeration system according to claim 1, characterized in that: The connector (8) is composed of an inclined part (801), a heat-conducting part (802) and a blocking part (803). The inclined part (801) is fixed to the adjacent fin (3), the heat-conducting part (802) is attached to the adjacent cooling pipe (2), and the blocking part (803) is pressed against the adjacent fin (3).

3. A copper tube finned heat exchanger for a refrigeration system according to claim 1, characterized in that: The connecting pipe (6) is fixed to two connecting frames (9), and the two connecting frames (9) are rotatably connected to two rotating rods (10). The two rotating rods (10) are slidably connected to several groups of sliding plates (11) that are evenly distributed. The number of groups of sliding plates (11) is twice the number of cooling pipes (2). Each group of sliding plates (11) contains two of them. Each sliding plate (11) is provided with a connecting hoop (12). The two connecting hoops (12) in the same group connect the adjacent cooling pipes (2) to the adjacent connecting head (7).

4. A copper tube finned heat exchanger for a refrigeration system according to claim 3, characterized in that: The connector (7) is fixed with a sealing ring (13), which is used to improve the sealing between the connector (7) and the adjacent cooling pipe (2).

5. A copper tube finned heat exchanger for a refrigeration system according to claim 4, characterized in that: Both the cooling pipe (2) and the connector (7) are provided with a connecting groove (201), and the connecting groove (201) is provided with an inclined surface. The connecting clamp (12) and the inclined surface of the adjacent connecting groove (201) are pressed against each other.

6. A copper tube finned heat exchanger for a refrigeration system according to claim 5, characterized in that: The rotating rod (10) is fixed with several sets of threaded protrusions (14) that are evenly distributed. The number of sets of threaded protrusions (14) is equal to the number of sets of sliding plates (11). Each sliding plate (11) corresponds to two threaded protrusions (14). The threaded protrusions (14) and the adjacent sliding plates (11) are driven by threads.

7. A copper tube finned heat exchanger for a refrigeration system according to claim 6, characterized in that: The two threaded protrusions (14) corresponding to the same sliding plate (11) are symmetrically distributed, and the two rotating rods (10) are driven by a gear set.

8. A copper tube finned heat exchanger for a refrigeration system according to claim 7, characterized in that: The sliding plate (11) is slidably connected to the connecting hoop (12), and the sliding plate (11) is threadedly connected to an adjusting member (15), which is rotatably connected to the adjacent connecting hoop (12).

9. A copper tube finned heat exchanger for a refrigeration system according to claim 8, characterized in that: The connector (7) is slidably connected to a gate (16) and a connecting rod (17). The gate (16) is fixedly connected to the adjacent connecting rod (17). The two connecting rods (17) corresponding to the same cooling pipe (2) are jointly fixedly connected to a connecting plate (18).

10. A copper tube finned heat exchanger for a refrigeration system according to claim 9, characterized in that: The connecting pipe (6) is fixedly connected to spare pipes (19) that are evenly spaced. The number of connectors (7) is twice the number of spare pipes (19). The spare pipes (19) and the connecting pipe (6) have two connection points. The connection points between the two connectors (7) and the connecting pipe (6) corresponding to the same cooling pipe (2) and the two connection points between the spare pipes (19) and the connecting pipe (6) are staggered. The connecting pipe (6) is slidably connected to the sliding column (20). The connecting pipe (6) is fixedly connected to a fixed ring (21) that is evenly spaced. The number of fixed rings (21) is equal to the number of sliding columns (20). A spring (22) is provided between the sliding column (20) and the corresponding fixed ring (21). The sliding column (20) is used to control the connection between the spare pipe (19) and the connecting pipe (6) at the connection point between two adjacent connectors (7) of the corresponding cooling pipe (2).

Images