A new low finned tube heater

Abstract

The utility model discloses a novel low finned tube heater, including heat exchange unit, the heat exchange unit includes: cyclone sleeve pipe, the cyclone sleeve pipe has the annular portion for sleeve and with annular portion penetrates the communication of gas inlet, cylinder, the cavity and the connecting port of communicating the cavity are set up in the cylinder, the cavity is used for accommodating heat exchange pipe, the annular portion of cyclone sleeve pipe is set in the outer periphery of cylinder and is close to the end portion and forms cyclone chamber, the connecting port is located and the other side opposite with gas inlet, a plurality of heat exchange pipes, the heat exchange pipe is connected in the cylinder, and both ends are through the sealing plate and are connected the inner wall of cylinder, the low finned tube body insides are used for flowing heat exchange medium, the cyclone chamber is used for making gas to enter the cylinder after cyclone and surrounds the heat exchange pipe helical flow. Effectively reduced the air current speed, has guaranteed the stable operation of equipment, also has the discharge port in the bottom to be favorable to the discharge of condensate, reduces the risk of direct scouring corrosion heat exchange pipe, also can promote the heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a novel low-finned tube heater. Background Technology

[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also one of the key devices for improving energy efficiency. The heat exchanger industry involves nearly 30 sectors, including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum, forming interconnected industrial chains.

[0003] Referring to the published patent CN214371974U, traditional gas heaters use ordinary bare tubes as the heat exchange core, which has a low heat transfer coefficient. There is a risk of erosion and corrosion of the heat exchange tubes at the gas inlet on the shell side. Once a heat exchange tube leak occurs, it will bring additional time and maintenance costs to users, which is not conducive to improving market competitiveness. Therefore, a new type of low-finned tube heater is still needed to solve the above problems. Utility Model Content

[0004] This utility model provides a novel low-finned tube heater that solves the above-mentioned problems.

[0005] The objective of this utility model is achieved through the following technical solution: A novel low-finned tube heater includes a heat exchange unit, the heat exchange unit comprising: Cyclone sleeve connector, the cyclone sleeve connector having an annular portion for fitting and an air inlet communicating through the annular portion; The cylindrical body has a receiving cavity and a connecting port that connects to the receiving cavity. The receiving cavity is used to accommodate heat exchange tubes. The annular part of the cyclone sleeve is sleeved on the outer side of the cylindrical body near the end to form a cyclone cavity. The connecting port is located on the opposite side from the air inlet. Multiple heat exchange tubes, which are low-finned tubes, are connected to the cylinder body and their ends are connected to the inner wall of the cylinder body through sealing plates. The inner side of the low-finned tubes is used for the flow of heat exchange medium. The cyclone chamber is used to make the gas enter the cylinder body in a cyclone and then flow spirally around the heat exchange tubes.

[0006] Preferably, an expansion element is connected to the middle section of the cylinder along the axial direction, and the two ends of the expansion element are connected to the tube wall of the cylinder to form a closed receiving cavity.

[0007] Preferably, it also includes multiple heat exchange units arranged in parallel, with adjacent heat exchange units arranged in parallel, and the gas after spiral heat exchange in the cyclone chamber enters the cylinder of the adjacent heat exchange unit through a connecting pipe, and the medium passing through the liquid pipe is connected in series through a connecting pipe.

[0008] Preferably, adjacent heat exchange units are connected by a connecting frame.

[0009] Preferably, the cross-section of the cyclone cavity is fan-shaped, and the angle between the air inlet and the connection port on the fan shape is in the range of 90-180 degrees.

[0010] Preferably, a collection chamber is also formed on the cylinder near the connection port, and the collection chamber is used to collect the condensate entering through the cyclone chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model include at least the following: A cyclone sleeve is installed on the outside of the cylinder. The sleeve fits around the outer circumference of the cylinder, with the air inlet and the connection port located at opposite positions on the cylinder. This allows the gas passing through the air inlet to circulate in a ring before rotating into the connection port. The gas then continues to rotate in a spiral shape inside the cylinder, exchanging heat with the internal heat exchange tubes. This effectively reduces the airflow velocity, ensuring stable operation of the equipment. There is also a drain port at the bottom, which facilitates the discharge of condensate, reducing the risk of direct erosion and corrosion of the heat exchange tubes and improving heat exchange efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a side view of an embodiment of the present utility model.

[0013] 1. Cyclone sleeve; 11. Annular part; 12. Cyclone chamber; 13. Air inlet; 2. Cylinder; 21. Receiving cavity; 22. Connection port; 3. Heat exchange tube; 4. Sealing plate; 5. Expansion element; 6. Connecting pipe; 7. Liquid passage pipe; 8. Connecting frame; 9. Collection chamber. Detailed Implementation

[0014] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0015] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0016] This utility model provides a novel low-finned tube heater, including a heat exchange unit comprising: a cyclone sleeve pipe 1, the cyclone sleeve pipe 1 having an annular portion 11 for sleeve connection and an air inlet 13 communicating through the annular portion 11; a cylinder 2, the cylinder 2 having a receiving cavity 21 and a connecting port 22 communicating with the receiving cavity 21, the receiving cavity 21 for accommodating heat exchange tubes 3, the annular portion 11 of the cyclone sleeve pipe 1 being sleeved on the outer periphery of the cylinder 2 near the end to form a cyclone cavity 12, the connecting port 22 being located on the opposite side from the air inlet 13; and a plurality of heat exchange tubes 3, the heat exchange tubes 3 being low-finned tubes, the heat exchange tubes 3 being connected inside the cylinder 2, and both ends being connected to the inner wall of the cylinder 2 through sealing plates 4, the inner side of the tube of the low-finned tube being used for flowing heat exchange medium, and the cyclone cavity 12 being used to allow gas to enter the cylinder 2 in a cyclone and then spirally flow around the heat exchange tubes 3. The heat exchange unit comprises three main structures. The outermost shell 2 houses multiple heat exchange tubes 3 arranged side-by-side inside. The two ends of each heat exchange tube 3 are connected to the inner wall of the shell 2 via sealing plates 4, dividing the inner and outer walls of the tubes into two distinct cavities for heat exchange. When air or other gases requiring heat exchange pass through the inlet 13, the airflow rotates along the annular circumference, effectively reducing the airflow velocity and ensuring stable operation of the equipment. A drain port at the bottom facilitates the discharge of condensate. This prevents high-temperature gas from continuously scouring one area after entering, reducing the risk of damage and extending the product's lifespan.

[0017] Preferably, an expansion element 5 is connected to the middle section of the cylinder 2 along the axial direction, and the two ends of the expansion element 5 are connected to the pipe wall of the cylinder 2 to form a closed receiving cavity 21. The expansion element 5 is connected to the cylinder 2 by welding. By setting the expansion element 5 between the cylinders 2, the thermal stress from the pipe during thermal expansion and contraction can be offset, ensuring the welding quality of the connection and improving reliability.

[0018] Preferably, the system also includes multiple heat exchange units arranged in parallel. Adjacent heat exchange units are arranged side-by-side, and the gas, after spiral heat exchange in the cyclone chamber 12, enters the cylinder 2 within the adjacent heat exchange unit via a connecting pipe 6. The medium, after passing through the liquid-passing pipe 7, is connected in series via a connecting pipe. The liquid-passing pipe 7 is located at the end of the cylinder 2, allowing the medium, after initial heat exchange, to continue flowing into the internal heat exchange tube 3 of the next cylinder 2, improving the heat exchange efficiency of the heat exchange tube 3 and saving space.

[0019] Preferably, adjacent heat exchange units are connected by a connecting frame 8. The connecting frame 8 can maintain the relative positions of multiple heat exchange units.

[0020] Preferably, the cross-section of the cyclone cavity 12 is fan-shaped, and the angle between the air inlet 13 and the connecting port 22 on the fan shape ranges from 90 to 180 degrees. The angle between the air inlet 13 and the connecting port 22 on the fan shape can be adjusted according to the incoming airflow velocity. Experiments have shown that within this range, the cyclone cavity 12 between the air inlet 13 and the connecting port 22 can maintain a highly efficient cyclone state to enter the space between the heat exchange tube 3 and the cylinder 2.

[0021] Preferably, a collection chamber 9 is also formed on the cylinder 2 near the connection port 22. The collection chamber 9 is used to collect the condensate entering through the cyclone chamber 12. The collection chamber 9 is, for example, an extension formed on the cylinder 2. A connecting valve can be provided at the bottom of the collection chamber 9 to release the liquid condensed after heat exchange, which greatly improves the practicality of the heat exchanger.

[0022] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A novel low-finned tube heater, characterized in that, Includes a heat exchange unit, the heat exchange unit comprising: Cyclone sleeve connector, the cyclone sleeve connector having an annular portion for fitting and an air inlet communicating through the annular portion; The cylindrical body has a receiving cavity and a connecting port that connects to the receiving cavity. The receiving cavity is used to accommodate heat exchange tubes. The annular part of the cyclone sleeve is fitted onto the outer periphery of the cylindrical body near the end to form a cyclone cavity. The connecting port is located on the opposite side from the air inlet. Multiple heat exchange tubes are connected to the cylinder body, and both ends are connected to the inner wall of the cylinder body through sealing plates. The inner side of the tube of the low-finned tube is used for the flow of heat exchange medium. The cyclone chamber is used to make the gas enter the cylinder body in a cyclone and then flow spirally around the heat exchange tube.

2. The novel low-finned tube heater according to claim 1, characterized in that, An expansion element is connected to the middle section of the cylinder along the axial direction, and the two ends of the expansion element are connected to the tube wall of the cylinder to form a closed receiving cavity.

3. The novel low-finned tube heater according to claim 1, characterized in that, It also includes multiple heat exchange units arranged in parallel, with adjacent heat exchange units arranged in parallel, and the gas after spiral heat exchange in the cyclone chamber enters the cylinder of the adjacent heat exchange unit through a connecting pipe, and the medium passing through the liquid pipe is connected in series through a connecting pipe.

4. The novel low-finned tube heater according to claim 3, characterized in that, Adjacent heat exchange units are connected by a connecting frame, and the heat exchange tubes are low-finned tubes.

5. The novel low-finned tube heater according to claim 1, characterized in that, The cross-section of the cyclone cavity is fan-shaped, and the angle between the air inlet and the connection port on the fan shape is in the range of 90-180 degrees.

6. The novel low-finned tube heater according to claim 5, characterized in that, A collection chamber is also formed on the cylinder near the connection port, which is used to collect the condensate entering through the cyclone chamber.

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