Unit combined type heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a unit combined type heat exchanger which comprises a heat exchanger body, the heat exchanger body comprises two sets of heat exchange barrels, two sets of heat exchange assemblies are arranged in the two sets of heat exchange barrels, each heat exchange assembly comprises a first fan-shaped exchange plate, and a third connecting pipe is installed on one side of each first fan-shaped exchange plate in a penetrating mode. Multiple sets of heat exchange pipes are installed on the other side of the first fan-shaped exchange plate in a penetrating mode, a second fan-shaped exchange plate is arranged at one end of each heat exchange pipe, air dissipation assemblies are arranged among the multiple sets of heat exchange pipes, the double-layer heat exchange barrel enables hot air to be subjected to deep heat exchange twice, and the heat exchange path is prolonged; the heat exchange assembly is matched with the air dissipation assembly, heat exchange media flow to drive the fan blade pipes to rotate, hot air is evenly dispersed to the surfaces of the heat exchange pipes through forced convection, the boundary layer heat resistance is remarkably reduced, the heat transfer coefficient is increased by 30% or above, and the heat exchange efficiency is greatly improved. And meanwhile, dust accumulation and scaling of the heat exchange pipe are effectively prevented through airflow disturbance, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a unit-combined heat exchanger. Background Technology

[0002] Heat exchangers, as devices that transfer heat from one heat transfer medium to another, play an important role in many industrial production fields such as chemical, petroleum, power, and food. With the continuous development of industry, higher requirements are placed on the performance and adaptability of heat exchangers. In practical applications, a single heat exchanger is often unable to meet the complex and diverse operating conditions. When dealing with large heat loads or fluids of different properties, a single heat exchanger may not be able to reach the specified temperature index. In this case, it is necessary to combine multiple heat exchangers to form a combined heat exchanger.

[0003] A Chinese patent with publication number CN222865647U discloses a combined heat exchanger. During operation, oil and gas enter from the first oil and gas inlet of the tube radiator. The first refrigerant inlet of the tube radiator is connected to the refrigeration unit. Then, the oil and gas gradually enter the tube radiator and the plate radiator for cooling and reflow.

[0004] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: when oil and gas exchange heat, since the heat exchange tubes are evenly distributed inside the tube body, the heat exchange efficiency of the heat exchange tubes near the center of the tube body is different from that of the heat exchange tubes near the inner wall of the tube body, and the heat of oil and gas cannot be effectively utilized for energy exchange, resulting in heat loss. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the heat exchange tubes in the prior art are evenly distributed inside the tube body, and the heat exchange efficiency of the heat exchange tubes near the center of the tube body is different from that of the heat exchange tubes near the inner wall of the tube body. To this end, we propose a unit combined heat exchanger.

[0006] To achieve the above objectives, this application adopts the following technical solution: a unit-combined heat exchanger, including a heat exchanger body, the heat exchanger body including two sets of heat exchange barrels. When the device is in use, the hot gas passes through the upper heat exchange barrel first and then through the lower heat exchange barrel to form a combined heat exchange, thereby improving the heat exchange efficiency between the hot gas and the medium.

[0007] Preferably, the two heat exchange tanks are fixed by two sets of support frames. The upper heat exchange tank has an air inlet and a liquid inlet on its outer wall, located at opposite ends. The lower heat exchange tank has a liquid outlet and an air outlet on its outer wall, also located at opposite ends. Liquid flows between the two heat exchange tanks via a connecting pipe (pipe 1), and gas flows between them via a connecting pipe (pipe 2). The heat transfer medium flows into the heat exchange tank through the liquid inlet, circulates once inside the heat exchange tank, and then flows into the lower heat exchange tank through the connecting pipe (pipe 1). After circulating, the heat transfer medium is discharged into the circulation device through the liquid outlet. Hot air flows into the upper heat exchange tank through the air inlet for heat exchange. After passing through the upper heat exchange tank, the hot air flows into the lower heat exchange tank through the connecting pipe (pipe 2) for secondary heat exchange. After heat exchange, the hot air is discharged through the air outlet for collection, thus improving the heat exchange efficiency of the hot air.

[0008] Preferably, each of the two heat exchange tanks is equipped with two sets of heat exchange components, which are connected to the liquid inlet and the connecting pipe, respectively.

[0009] Preferably, the heat exchange assembly includes a sector-shaped heat exchange plate 1. A connecting pipe 3 is installed through one side of the sector-shaped heat exchange plate 1, and the connecting pipe 3 is connected to the liquid inlet. Multiple sets of heat exchange tubes are installed through the other side of the sector-shaped heat exchange plate 1. A sector-shaped heat exchange plate 2 is provided at one end of each heat exchange tube. A ventilation assembly is provided between the multiple sets of heat exchange tubes. The two sets of heat exchange assemblies are symmetrically arranged. The two sets of sector-shaped heat exchange plates 1 are connected by a connecting pipe 4. The heat transfer medium flows into the connecting pipe 3 through the liquid inlet, and then flows into the multiple sets of heat exchange tubes and the ventilation assembly through the sector-shaped heat exchange plates 1. The heat exchange tubes and the ventilation assembly exchange heat with the hot air introduced into the heat exchange tank. The ventilation assembly disperses the hot air introduced into the heat exchange tank, so that the hot air is in uniform contact with the heat exchange tubes inside and outside the sector-shaped heat exchange plate 1 for heat exchange, thereby improving the heat exchange efficiency.

[0010] Preferably, the air diffuser assembly includes a guide pipe, inside which multiple sets of fan-shaped tubes are rotatably mounted. The fan-shaped tubes are rotatably connected to the guide pipe, and both ends of each fan-shaped tube have circular grooves that match the guide pipe. An impeller is fixedly installed inside each fan-shaped tube. When the heat exchange medium flowing into the air diffuser assembly exchanges heat with the air, its kinetic energy directly acts on the impeller inside the fan-shaped tube as it flows at high speed along the internal channel of the guide pipe. The impeller uses aerodynamically optimized spiral blades, generating efficient torque transmission under fluid impact. This torque drives the fan-shaped tubes to rotate around the guide pipe via the central shaft of the impeller. Inside the heat exchange tank, multiple sets of heat exchange tubes employ... By combining staggered distribution with counter-current design, the external rotating airflow is uniformly guided to the surface of each heat exchange tube under the combined action of centrifugal force and pressure difference. The dynamic airflow generated by the rotating fan-shaped tubes not only greatly increases the contact frequency between hot air and heat exchange tubes, but also significantly reduces the boundary layer thickness on the surface of the heat exchange tubes through forced convection, thereby increasing the heat transfer coefficient by more than 30%. At the same time, the continuous airflow disturbance can effectively prevent the formation of dust or scale on the surface of the heat exchange tubes, extending the service life of the equipment. Furthermore, the airflow generated by the rotating fan-shaped tubes forms a stable temperature field inside the heat exchange tank, avoiding local overheating and improving the stability and safety of the entire heat exchange system.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] In this invention, multiple beneficial effects are achieved through the coordinated operation of a double-layered heat exchange tank in series, staggered counter-current heat exchange tubes, and an innovative air diffuser assembly: the double-layered heat exchange tank allows hot air to undergo two deep heat exchange processes, extending the heat exchange path; the heat exchange assembly, in conjunction with the air diffuser assembly, utilizes the flow of the heat exchange medium to drive the fan-shaped tubes to rotate, and through forced convection, evenly disperses the hot air to the surface of the heat exchange tubes, significantly reducing boundary layer thermal resistance and increasing the heat transfer coefficient by more than 30%, thus greatly improving heat exchange efficiency; at the same time, airflow disturbance effectively prevents dust and scale buildup on the heat exchange tubes, extending the service life of the equipment; the rotating fan-shaped tubes form a stable temperature field, avoiding local overheating and ensuring the safe operation of the system. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0014] Figure 1 This is a schematic diagram of the overall structure of the heat exchanger body of this utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of the heat exchanger body of this utility model. Figure 2;

[0016] Figure 3 This is a schematic diagram of the internal structure of the heat exchange tank of this utility model;

[0017] Figure 4 This is a schematic diagram of the heat exchange component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the air diffuser assembly of this utility model;

[0019] Figure 6 This is a schematic diagram of the air dissipation component of this utility model.

[0020] Legend: 1. Heat exchanger body; 11. Heat exchange tank; 111. Liquid inlet; 112. Air inlet; 113. Connecting pipe one; 114. Connecting pipe two; 115. Liquid outlet; 116. Exhaust outlet; 117. Support frame; 12. Heat exchange assembly; 121. Sector-shaped heat exchange plate one; 122. Connecting pipe three; 123. Heat exchange tube; 124. Sector-shaped heat exchange plate two; 125. Connecting pipe four; 13. Air diffuser assembly; 131. Guide pipe; 132. Fan-shaped tube; 1321. Circular groove; 133. Impeller. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Reference Figure 1-2 As shown, this utility model provides a technical solution: a unit-combined heat exchanger, including a heat exchanger body 1, which includes two sets of heat exchange barrels 11. When the device is in use, the hot gas first passes through the upper heat exchange barrel 11 and then through the lower heat exchange barrel 11 to form a combined heat exchange, thereby improving the heat exchange efficiency between the hot gas and the medium.

[0023] Reference Figure 1-2As shown in this embodiment: two sets of heat exchange tanks 11 are fixed by two sets of support frames 117 respectively. The upper heat exchange tank 11 has an air inlet 112 and a liquid inlet 111 on its outer wall, located at opposite ends of the heat exchange tank 11. The lower heat exchange tank 11 has a drain outlet 115 and an exhaust outlet 116 on its outer wall, also located at opposite ends of the heat exchange tank 11. Liquid flows between the two sets of heat exchange tanks 11 through a connecting pipe 113, and between the two sets of heat exchange tanks 11 through a connecting pipe 114. Gas flows into the heat exchange tank 11 through the liquid inlet 111, and the heat transfer medium circulates once inside the heat exchange tank 11 before flowing into the lower heat exchange tank 11 through the connecting pipe 113. After circulating, the heat transfer medium is discharged into the circulation device through the drain port 115. Hot gas flows into the interior of the upper heat exchange tank 11 through the air inlet 112 for heat exchange. After passing through the upper heat exchange tank 11, the hot gas flows into the lower heat exchange tank 11 through the connecting pipe 114 for secondary heat exchange. After the heat exchange is completed, the gas is discharged through the exhaust port 116 for collection, thereby improving the heat exchange efficiency of the hot gas.

[0024] Reference Figure 1-3 As shown in this embodiment: each of the two sets of heat exchange tanks 11 is equipped with two sets of heat exchange components 12, and the heat exchange components 12 are respectively connected to the liquid inlet 111 and the connecting pipe 113.

[0025] Reference Figure 3-4 As shown in this embodiment: the heat exchange assembly 12 includes a sector-shaped exchange plate 121. A connecting pipe 122 is installed through one side of the sector-shaped exchange plate 121, and the connecting pipe 122 is connected to the liquid inlet 111. Multiple sets of heat exchange pipes 123 are installed through the other side of the sector-shaped exchange plate 121. A sector-shaped exchange plate 124 is provided at one end of the heat exchange pipe 123. A ventilation assembly 13 is provided between the multiple sets of heat exchange pipes 123. The two sets of heat exchange assemblies 12 are symmetrically arranged, and the two sets of sector-shaped exchange plates 121 are connected together. The heat transfer medium is connected by connecting pipe 4 125. It flows into connecting pipe 3 122 through liquid inlet 111 and then into multiple sets of heat exchange pipes 123 and air diffuser assembly 13 through fan-shaped exchange plate 121. The heat exchange pipes 123 and air diffuser assembly 13 exchange heat with the hot air introduced into the heat exchange tank 11. The air diffuser assembly 13 disperses the hot air introduced into the heat exchange tank 11, so that the hot air is in uniform contact with the heat exchange pipes 123 inside and outside the fan-shaped exchange plate 121 for heat exchange, thereby improving the heat exchange efficiency.

[0026] Reference Figure 3-6As shown in this embodiment: the air diffuser assembly 13 includes a guide pipe 131, and multiple sets of fan-shaped tubes 132 are rotatably installed inside the guide pipe 131. The fan-shaped tubes 132 are rotatably connected to the guide pipe 131. Circular grooves 1321 are opened at both ends of the fan-shaped tubes 132, which match the guide pipe 131. An impeller 133 is fixedly installed inside the fan-shaped tubes 132. When the heat exchange medium flowing into the air diffuser assembly 13 exchanges heat with the hot air, its kinetic energy directly acts on the impeller 133 inside the fan-shaped tubes 132 when the heat exchange medium flows at high speed along the internal channel of the guide pipe 131. The impeller 133 adopts aerodynamically optimized spiral blades, generating efficient torque transmission under fluid impact. This torque drives the fan-shaped tubes 132 to move around the guide pipe 131 as the axis through the central axis of the impeller 133. The rotating airflow inside the heat exchange tank 11 employs a combination of staggered arrangement and counter-current design. Under the combined action of centrifugal force and pressure difference, the external rotating airflow is uniformly guided to the surface of each heat exchange tube 123. The dynamic airflow generated by the rotating fan tube 132 not only greatly increases the contact frequency between hot air and heat exchange tube 123, but also significantly reduces the boundary layer thickness on the surface of the heat exchange tube through forced convection, thereby increasing the heat transfer coefficient by more than 30%. At the same time, the continuous airflow disturbance can effectively prevent the formation of dust or scale on the surface of the heat exchange tube 123, extending the service life of the equipment. Furthermore, the airflow generated by the rotating fan tube 132 forms a stable temperature field within the heat exchange tank 11, avoiding local overheating and improving the stability and safety of the entire heat exchange system.

[0027] Working principle: When this modular heat exchanger is working, hot air enters from the air inlet 112 of the upper heat exchange tank 11. At the same time, the heat transfer medium flows in from the liquid inlet 111, enters the fan-shaped heat exchange plate 121 through the connecting pipe 3 122, and then flows to multiple sets of heat exchange tubes 123 and the air diffuser assembly 13. In the air diffuser assembly 13, the heat exchange medium flows along the guide pipe 131 and impacts the impeller 133, driving the fan tube 132 to rotate. The generated dynamic airflow evenly disperses the hot air to the surface of the heat exchange tubes 123. The staggered counter-flow design of the heat exchange tubes 123 enhances heat exchange. The hot air that has completed the initial heat exchange flows into the lower heat exchange tank 11 through the connecting pipe 2 114. The heat transfer medium flows in synchronously through the connecting pipe 1 113 to continue heat exchange. Finally, the hot air is discharged from the exhaust port 116 and the heat transfer medium is discharged from the liquid outlet 115. Through the series connection of the double-layer heat exchange tanks 11 and the active turbulence of the air diffuser assembly 13, efficient heat exchange is achieved.

[0028] The scope of the utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of the utility model, and all such modifications and variations should fall within the protection scope of the utility model.

Claims

1. A unitized heat exchanger, characterized by: Includes a heat exchanger body, which includes two sets of heat exchange tanks, and each of the two sets of heat exchange tanks is equipped with two sets of heat exchange components. The heat exchange assembly includes a sector-shaped heat exchange plate 1, a connecting pipe 3 is installed through one side of the sector-shaped heat exchange plate 1, and multiple sets of heat exchange pipes are installed through the other side of the sector-shaped heat exchange plate 1. A sector-shaped heat exchange plate 2 is provided at one end of each heat exchange pipe. A ventilation assembly is provided between each set of heat exchange pipes. The two sets of heat exchange assemblies are arranged symmetrically, and the two sets of sector-shaped heat exchange plates 1 are connected by a connecting pipe 4.

2. The unitized heat exchanger of claim 1, wherein: The two sets of heat exchange tanks are fixed by two sets of support frames. The outer wall of the upper heat exchange tank is provided with an air inlet and a liquid inlet, which are located at the two ends of the heat exchange tank, respectively.

3. The unitized heat exchanger of claim 2, wherein: The connecting pipe three is connected to the liquid inlet.

4. The unitized heat exchanger of claim 2, wherein: The lower end of the outer wall of the heat exchange tank is provided with a drain port and an exhaust port respectively. The two sets of heat exchange tanks are connected by a connecting pipe one for liquid flow and by a connecting pipe two for gas flow.

5. The unitized heat exchanger of claim 4, wherein: The heat exchange assembly is connected to both the liquid inlet and the connecting pipe.

6. The unitized heat exchanger of claim 1, wherein: The air distribution assembly includes a guide pipe, inside which multiple sets of fan blades are rotatably installed. The fan blades are rotatably connected to the guide pipe. Both ends of the fan blades are provided with circular grooves that match the guide pipe. An impeller is fixedly installed inside the fan blades.

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