Strain type heat exchanger applied to fluid

Abstract

The utility model discloses a strain type heat exchanger applied to fluid. The strain type heat exchanger comprises a shell, a plurality of heat exchange pipes arranged on the shell in a penetrating mode and heat exchange fin assemblies arranged on the heat exchange pipes in a penetrating mode. The shell is provided with a temperature control fluid inlet and a temperature control fluid outlet, and the heat exchange pipe is provided with a heat exchange fluid outlet and a heat exchange fluid outlet; the heat exchange tube penetrates into the shell, and the heat exchange fin assembly is located in the shell. The heat exchange fin assembly comprises a plurality of heat exchange fin pairs which are arranged in parallel at intervals, and each heat exchange fin pair comprises a first heat exchange fin and a second heat exchange fin which are made of heat conduction memory alloy. The middle positions of the first heat exchange fins and the second heat exchange fins are fixed and deform in opposite directions after being heated, so that included angles are formed between the first heat exchange fins and the normal surfaces of the heat exchange tubes, and the ends of the first heat exchange fins and the second heat exchange fins are separated to form X structures; the shape of the heat exchange fins can be automatically adjusted when the fluid temperature changes, the contact area with the fluid is increased, and the heat exchange efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a heat exchanger, in particular to a strain type heat exchanger applied to fluid. Background Art

[0002] A fin-and-tube heat exchanger consists of a housing, heat exchange tubes, and fins mounted on the tubes. Its operating principle is as follows: a pressurized fluid, carrying heat, flows into the heat exchanger from the inlet. Using the fluid's pressure energy, it flows through the heat exchange tubes, ultimately flowing through the entire device. Simultaneously, a temperature-control fluid flows into the heat exchanger through pipes outside the housing. The temperature-control fluid and the pressurized fluid in the heat exchange tubes exchange heat energy through the internal fins. After participating in the heat exchange, the temperature-control fluid in the heat exchanger housing flows out of the heat exchanger, while the pressurized fluid is discharged through the heat exchange tube outlet of the housing.

[0003] Despite their widespread adoption in numerous industrial applications, existing technologies for fin-and-tube heat exchangers (FTEs) still suffer from numerous shortcomings, particularly in heat transfer efficiency and system adjustability. While the following patented technologies each offer unique advantages, their complex structures fail to fundamentally address the issue of low heat transfer efficiency and exhibit significant limitations in system adjustability.

[0004] Patent document CN119756022B discloses a fin-type heat exchanger, the core structure of which includes a base frame, a base tube assembly, and circular fins mounted on the base tube assembly. The base tube assembly consists of a straight tube and a curved tube, which are connected by a bellows. A transverse plate is provided in the base frame to fix the curved tube. In addition, a cylinder is mounted on the base frame, the output end of which is connected to a dredging assembly, which is connected to the straight tube via a pull block. During operation, the cylinder drives the dredging assembly and the pull block to move. The pull block lifts the straight tube with the help of a connecting rod, and with the help of the elastic deformation of the bellows, increases the curvature between the straight tube and the curved tube, thereby improving the efficiency of debris passing through the curved tube and reducing the risk of blockage.

[0005] Patent document CN120008112A discloses an active chilled beam air supply terminal device and operating method based on wall-codon jets. Its key structures include a static pressure box, a fin-tube heat exchanger, a mixing chamber, and an induced return air chamber. The static pressure box is located at the top of the mixing chamber, and a tapered primary air jet nozzle is installed at the bottom. These nozzles inject the primary supply air from the static pressure box into the mixing chamber at high speed, and then mix it with the return air from the induced return air chamber. The fin-tube heat exchanger is placed between the mixing chamber and the induced return air chamber to perform heat exchange processing on the return air. The mixed supply air is delivered into the room through a slit-type air supply port, forming a wall-codon jet air supply pattern by leveraging the Coanda effect.

[0006] Patent document CN119779059A discloses a special-shaped air conditioning heat exchanger structure, primarily composed of stacked heat exchange fins and interlaced heat exchange tubes. After assembly, the heat exchange fins and tubes are bent at at least one location to form a bend. The fin pitch at the bend is greater than at other locations to ensure consistent heat transfer in this area after bending. The heat exchange fins consist of a fin body and a fin hole. The top of the fin hole is provided with a flange, which is formed using a specific flange die. This die incorporates an adjustable wedge structure for precise control of the flange height.

[0007] In summary, while existing fin-and-tube heat exchangers have improved in certain areas, they generally suffer from low heat exchange efficiency and poor system adjustability. These issues limit their widespread application in efficient and flexible heat exchange applications. A new heat exchanger technology that can significantly improve heat exchange efficiency is urgently needed to meet the growing demand for high-efficiency heat exchange equipment in industrial production. Summary of the Invention

[0008] In order to solve the above technical problems, the utility model provides a strain type heat exchanger to solve the problems of poor system adjustment capability and low heat exchange efficiency existing in the existing heat exchanger.

[0009] The technical solution of the utility model to solve the above technical problems is: a strain type heat exchanger applied to fluid, comprising a shell, a plurality of heat exchange tubes passing through the heat exchange tubes, and a heat exchange fin assembly passing through the heat exchange tubes;

[0010] The shell is provided with a temperature control fluid inlet and a temperature control fluid outlet, and the heat exchange tube is provided with a heat exchange fluid outlet and a heat exchange fluid outlet; the heat exchange tube penetrates into the shell and the heat exchange fin assembly is located in the shell;

[0011] The heat exchange fin assembly includes a plurality of heat exchange fin pairs arranged in parallel and at intervals, each heat exchange fin pair includes a first heat exchange fin and a second heat exchange fin adjacent to each other, and the first heat exchange fin and the second heat exchange fin are both made of a heat-conducting memory alloy; the middle position of the first heat exchange fin and the second heat exchange fin is fixed and deforms in opposite directions after being heated to form an angle with the normal surface of the heat exchange tube, thereby separating the ends of the first heat exchange fin and the second heat exchange fin from each other to form an X structure.

[0012] The preferred technical solution of the present invention to solve the above technical problems is: the first heat exchange fins and the second heat exchange fins overlap to the same extent and are both rectangular, and the axis of the heat exchange tube passes through the intersection of the diagonals of the first heat exchange fins and the second heat exchange fins.

[0013] The preferred technical solution of the present invention to solve the above technical problems is: the first heat exchange fins and the second heat exchange fins are made of any one of Cu-Zn, Cu-Zn-Al, Cu-Sn, Ni-Al, and Fe-Mn-Si alloys.

[0014] The preferred technical solution of the present invention for solving the above technical problem is: under normal temperature, the adjacent surfaces of the first heat exchange fin and the second heat exchange fin are in close contact.

[0015] The preferred technical solution of the present invention for solving the above technical problems is as follows: the shell includes a frame body with an opening on one side and a cover plate, and the heat exchange tube and heat exchange fin assembly are integrated with the cover plate.

[0016] The preferred technical solution of the present invention to solve the above technical problems is: the heat exchange tube is a U-shaped tube and passes through the cover plate and is fixed to each other, the heat exchange fluid outlet and the heat exchange fluid outlet of the heat exchange tube are located on the outside of the cover plate, and the heat exchange fin assembly is located on the heat exchange tube on the inside of the cover plate.

[0017] The preferred technical solution of the present invention for solving the above technical problems is that the temperature-control fluid inlet and the temperature-control fluid outlet are located on two opposite side surfaces of the shell.

[0018] The preferred technical solution of the present invention for solving the above technical problems is: the shell is made of stainless steel.

[0019] The preferred technical solution of the present invention for solving the above technical problems is: the heat exchange tube is made of any one of pure copper, brass, stainless steel and aluminum alloy.

[0020] The preferred technical solution of the present invention to solve the above technical problems is: the heat exchange tube on the shell includes three U-shaped tubes parallel to each other, the heat exchange fluid outlets and the heat exchange fluid outlets of the three heat exchange tubes are located on the same side of the shell, and the first heat exchange fins and the second heat exchange fins of the U-shaped tubes are parallel to each other.

[0021] Compared with existing technologies, the present invention offers the following advantages: Each pair of heat exchange fins, including adjacent first and second fins, is made of a thermally conductive memory alloy. Upon heating, these fins deform in opposite directions, forming an angle with the normal surface of the heat exchange tube. This significantly increases the contact area between the fluid and the fins, improving heat exchange efficiency. Furthermore, due to the properties of the thermally conductive memory alloy, the fins automatically adjust their deformation angle as the temperature changes, thereby dynamically adjusting the heat exchange area to accommodate varying heat exchange requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0023] Figure 1 A schematic diagram of the initial state of a strain gauge heat exchanger applied to a fluid;

[0024] Figure 2 A state diagram of a heat exchange fin assembly in an initial state of a strain gauge heat exchanger applied to a fluid;

[0025] Figure 3 is a three-dimensional schematic diagram of a strain gauge heat exchanger applied to fluid;

[0026] Figure 4 An exploded diagram of the initial state of a strain gauge heat exchanger applied to fluid;

[0027] Figure 5 A strain gauge heat exchanger for fluids Figure 4 Partial enlarged view;

[0028] Figure 6 A schematic diagram of the working state of a strain gauge heat exchanger applied to fluid;

[0029] Figure 7 A state diagram of a heat exchange fin assembly in a working state of a strain gauge heat exchanger applied to a fluid;

[0030] Figure 8 The figure is a schematic diagram showing the working state of the heat exchange tube and heat exchange fin assembly of a strain gauge heat exchanger applied to fluid.

[0031] Reference numerals: housing 1 ; heat exchange tube 2 ; heat exchange fin assembly 3 ; temperature control fluid inlet 11 ; temperature control fluid outlet 12 ; heat exchange fluid inlet 21 ; heat exchange fluid outlet 22 ; heat exchange fin pair 30 ; first heat exchange fin 31 ; second heat exchange fin 32 ; frame 101 ; cover plate 102 . DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0033] It should be noted that like reference numerals denote like items in the following drawings, and therefore, once an item is defined in one drawing, it will not be further defined or explained in the subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present utility model.

[0035] like Figure 1 、 6 As shown, this embodiment provides a strain gauge heat exchanger for fluids, comprising a housing 1, one or more heat exchange tubes 2, and a heat exchange fin assembly 3 provided on the heat exchange tubes 2. In this embodiment, the housing 1 has three heat exchange tubes 2, and each heat exchange tube 2 is provided with a heat exchange fin assembly 3.

[0036] like Figure 1 、 6 As shown, the housing 1 is provided with a temperature-control fluid inlet 11 and a temperature-control fluid outlet 12 for introducing and discharging the temperature-control fluid, thereby regulating the internal temperature of the heat exchanger. The heat exchange tube 2 is provided with a heat exchange fluid inlet 21 and a heat exchange fluid outlet 22 for introducing and discharging the pressure-carrying fluid to complete the heat exchange process.

[0037] like Figure 1 、 3 As shown in Figures 4 and 6, the heat exchange tube 2 passes through the shell 1, the heat exchange fluid inlet 21 and the heat exchange fluid outlet 22 are located outside the shell 1, and the heat exchange part is located in the inner cavity of the shell 1. The heat exchange fin assembly 3 is located on the heat exchange tube 2 section in the inner cavity of the shell 1, and then directly contacts with the temperature control fluid for heat exchange.

[0038] like Figure 2 、 5 As shown in Figures 7 and 8, the heat exchange fin assembly 3 is composed of a plurality of heat exchange fin pairs 30 arranged in parallel and spaced apart. Each pair of heat exchange fin pairs 30 includes a first heat exchange fin 31 and a second heat exchange fin 32, both of which are made of a heat-conducting memory alloy. This alloy has a unique shape memory effect and can deform after being heated. Specifically, the middle position of the first heat exchange fin 31 and the second heat exchange fin 32 is fixed, as shown in Figures 7 and 8. Figure 2 、 5 As shown, in the initial state, the first heat exchange fin 31 and the second heat exchange fin 32 are close to each other. Figure 7 、 8As shown, the first and second heat exchange fins 31, 32 deform in opposite directions upon heating, forming an angle with the normal surface of the heat exchange tube 2. This causes the ends of the fins to separate from each other, forming an X-shaped configuration. This X-shaped configuration significantly increases the contact area between the fluid and the fins, improving heat exchange efficiency. Furthermore, due to the properties of the thermal memory alloy, the fins can automatically adjust their deformation angle as the temperature changes, thereby dynamically adjusting the heat exchange area to meet varying heat exchange requirements.

[0039] During operation, the pressurized heat exchange fluid carries heat from the heat exchange tube into the shell, and flows in the heat exchange tube with the help of the fluid pressure. At the same time, the temperature control fluid enters from the temperature control fluid inlet 11 and passes through the first heat exchange fin 31 and the second heat exchange fin 32. The first heat exchange fin 31 and the second heat exchange fin 32 are deformed and opened due to heat. The temperature control fluid and the pressurized heat exchange fluid in the heat exchange tube exchange heat energy through the internal heat exchange fins, and then the temperature control fluid and the heat exchange fluid flow out of the shell.

[0040] It should be understood that the middle position of the first heat exchange fin 31 and the second heat exchange fin 32 is fixed to the heat exchange tube 2 by means of through-hole interference fit, thereby facilitating preparation and assembly.

[0041] like Figure 2 、 5 As shown, the first and second heat exchange fins 31, 32 are fixed in close proximity to each other at their midpoints. This fixing method not only ensures the stability of the fins during deformation but also enables more uniform deformation after heating. By fixing them in the midpoint, the ends of the fins deform in opposite directions after heating, forming an X-shaped structure. This structure significantly increases the contact area between the fluid and the fins, improving heat exchange efficiency.

[0042] This means that at room temperature, the adjacent surfaces of the first heat exchange fin 31 and the second heat exchange fin 32 are in close contact. This design minimizes the heat exchange area of the heat exchange fins during the initial startup of the heat exchanger, enabling it to quickly respond to changes in the fluid temperature. When the fluid temperature rises, the heat exchange fins deform due to the heat, gradually increasing the contact area with the fluid, thereby achieving dynamic adjustment of the heat exchange efficiency. This close-fitting design not only improves the response speed of the heat exchanger, but also reduces unnecessary energy loss under low-load conditions, thereby improving the overall efficiency of the system. At the same time, it avoids the problem of fouling caused by narrow gaps, making cleaning and maintenance more convenient.

[0043] like Figure 1-8As shown, it is further preferred that the first heat exchange fins 31 and the second heat exchange fins 32 overlap in equal size and are both rectangular. This design enables the fins to distribute heat more evenly during deformation, thereby improving heat exchange efficiency. The axis of the heat exchange tube 2 passes through the intersection of the diagonals of the first heat exchange fins 31 and the second heat exchange fins 32, ensuring that the flow path of the fluid in the heat exchange tube 2 matches the deformation direction of the fins, further optimizing the heat exchange effect. Through this precise geometric design, the heat exchanger can maintain efficient heat exchange performance under different operating conditions, while reducing the resistance to fluid flow and improving the overall efficiency of the system.

[0044] like Figure 1 、 3 As shown in Figures 6 and 7, the temperature-control fluid inlet 11 and outlet 12 are located on opposing sides of the housing 1. This design optimizes the flow path of the temperature-control fluid within the housing 1, allowing for sufficient contact with the heat exchange fin assembly 3 for heat exchange. By locating the inlet and outlet on opposing sides, the temperature-control fluid achieves a uniform temperature distribution within the housing 1, improving heat exchange efficiency.

[0045] In terms of material selection, the first heat exchange fins 31 and the second heat exchange fins 32 are made of any one of the highly thermally conductive memory alloys such as Cu-Zn, Cu-Zn-Al, Cu-Sn, Ni-Al, and Fe-Mn-Si. These alloys all have excellent thermal conductivity and shape memory effects, and can rapidly deform upon heating, thereby achieving automatic adjustment of the heat exchange area. Taking Cu-Zn-Al alloy as an example, it has a stable martensite phase at room temperature and can rapidly transform into an austenite phase upon heating, undergoing a significant shape change. The deformation temperature of this alloy can be precisely controlled by adjusting the alloy composition, making it suitable for different heat exchange conditions. Heat exchange fins made of this alloy can automatically adjust their shape when the fluid temperature changes, increasing the contact area with the fluid and significantly improving heat exchange efficiency. At the same time, these alloys also have excellent corrosion resistance and mechanical strength, which can ensure the long-term stable operation of the heat exchanger in harsh environments.

[0046] The housing 1 is made of stainless steel. Stainless steel offers excellent corrosion resistance and mechanical strength, ensuring long-term, stable operation of the heat exchanger in harsh environments. Furthermore, stainless steel has excellent thermal conductivity, enabling rapid transfer of heat from the temperature-controlled fluid to the heat exchange fin assembly 3, improving heat exchange efficiency.

[0047] The heat exchange tubes 2 can be made of any of pure copper, brass, stainless steel, or aluminum alloy. These materials all offer excellent thermal conductivity and mechanical strength, meeting the requirements of the heat exchanger. Pure copper, for example, has excellent thermal conductivity, enabling rapid transfer of heat from the heat exchange fluid to the heat exchange fin assembly 3, improving heat exchange efficiency. Furthermore, pure copper offers excellent corrosion resistance and processability, facilitating the fabrication of various complex heat exchange tube 2 structures.

[0048] like Figure 3 As shown, the shell 1 includes a frame 101 with an opening on one side and a cover plate 102. The heat exchange tube 2 and the heat exchange fin assembly 3 are integrated with the cover plate 102. As shown in the figure, the heat exchange tube 2 is a U-shaped tube and passes through the cover plate 102 and is fixed to each other, preferably by welding and sealing. This design makes the structure of the heat exchanger more compact and easy to install and maintain. The heat exchange fluid inlet 21 and outlet of the heat exchange tube 2 are located on the outside of the cover plate 102, which is convenient for connection with the external fluid system. The heat exchange fin assembly 3 is located on the heat exchange tube 2 on the inside of the cover plate 102, and is in direct contact with the temperature control fluid for heat exchange. This integrated design facilitates the overall assembly of the heat exchanger. During installation, the frame 101 is coated with sealant, and the cover plate 102 integrating the heat exchange tube 2 and the heat exchange fin assembly 3 is combined with the frame 101. The heat exchange fin assembly 3 extends into the frame 101, and the frame 101 and the cover plate 102 are connected by bolts.

[0049] Preferably, if Figure 4 、 8 As shown, the heat exchange fin pairs 30 are arranged on the two linear arms of the U-shaped tube, and the heat exchange fin pairs 30 on the two linear arms are opposite to each other with a deformation gap provided therebetween.

[0050] Preferably, if Figure 3 As shown, in this embodiment, the heat exchange tube 2 on the shell 1 includes three parallel U-shaped tubes. The heat exchange fluid inlet 21 and the heat exchange fluid outlet 22 of the three heat exchange tubes 2 are located on the same side of the shell 1, which is convenient for connection with the external fluid system. The first heat exchange fin 31 and the second heat exchange fin 32 of the U-shaped tube are parallel to each other. This design makes the structure of the heat exchanger more compact and easy to install and maintain. At the same time, the design of three U-shaped tubes can increase the heat exchange area of the heat exchange tube 2 and further improve the heat exchange efficiency. In actual applications, the shape and number of the heat exchange tubes 2 can be flexibly selected according to the heat exchange requirements and space limitations.

[0051] This utility model introduces a strain gauge heat exchanger for fluids. Specific examples are used to illustrate the principles and implementations of the utility model. The above examples are intended only to facilitate understanding of the utility model and its core concepts. It should be noted that those skilled in the art may make various improvements and modifications to the utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of protection of the claims of the utility model.

Claims

1. A strain gauge heat exchanger for fluid, characterized by: It includes a shell, a plurality of heat exchange tubes passing through the shell, and a heat exchange fin assembly passing along the heat exchange tubes; The shell is provided with a temperature control fluid inlet and a temperature control fluid outlet, and the heat exchange tube is provided with a heat exchange fluid outlet and a heat exchange fluid outlet; the heat exchange tube penetrates into the shell and the heat exchange fin assembly is located in the shell; The heat exchange fin assembly includes a plurality of heat exchange fin pairs arranged in parallel and at intervals, each heat exchange fin pair includes a first heat exchange fin and a second heat exchange fin close to each other, and the first heat exchange fin and the second heat exchange fin are both made of a heat-conducting memory alloy; the middle position of the first heat exchange fin and the second heat exchange fin is fixed and deforms in opposite directions after being heated to form an angle with the normal surface of the heat exchange tube, thereby separating the ends of the first heat exchange fin and the second heat exchange fin from each other to form an X structure.

2. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The first heat exchange fin and the second heat exchange fin are of equal size and overlap each other and are both rectangular, and the axis of the heat exchange tube passes through the intersection of the diagonals of the first heat exchange fin and the second heat exchange fin.

3. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The first heat exchange fins and the second heat exchange fins are made of any one of Cu-Zn, Cu-Zn-Al, Cu-Sn, Ni-Al, and Fe-Mn-Si alloys.

4. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: At room temperature, adjacent surfaces of the first heat exchange fin and the second heat exchange fin are in close contact.

5. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The heat exchange tube is a U-shaped tube, and the heat exchange fin pairs are arranged on two linear arms of the U-shaped tube. The heat exchange fin pairs on the two linear arms are opposite to each other and a deformation gap is provided between them.

6. The strain gauge heat exchanger for fluid according to claim 5, characterized in that: The shell includes a frame with an opening on one side and a cover plate, and the heat exchange tube and heat exchange fin assembly are integrated with the cover plate; The heat exchange tubes pass through the cover plate and are fixed to each other. The heat exchange fluid outlet and the heat exchange fluid outlet of the heat exchange tubes are located on the outside of the cover plate. The heat exchange fin assembly is located on the heat exchange tubes on the inside of the cover plate.

7. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The temperature-control fluid inlet and the temperature-control fluid outlet are located on two opposite side surfaces of the shell.

8. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The shell is made of stainless steel.

9. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The heat exchange tube is made of any one of pure copper, brass, stainless steel and aluminum alloy.

10. The strain gauge heat exchanger for fluid according to claim 1, characterized in that: The heat exchange tubes on the shell include three parallel U-shaped tubes, the heat exchange fluid outlets of the three heat exchange tubes are located on the same side of the shell, and the first heat exchange fins and the second heat exchange fins of the U-shaped tubes are parallel to each other.

Images