Evaporator and manufacturing method thereof

Abstract

The invention relates to the field of evaporators, and provides an evaporator and a manufacturing method thereof. The evaporator comprises a flow channel which is spiral; the fluid inlet is formed in the first end of the flow channel, and the fluid inlet is formed close to the center of the spiral flow channel; the fluid outlet is formed in the second end of the flow channel, the fluid outlet is formed in the position close to the edge of the spiral flow channel, and the fluid outlet and the fluid inlet are in fluid communication through the flow channel. The evaporator can improve the heat exchange efficiency; due to the arrangement of the spiral flow channel, centrifugal force can be generated when the fluid flows, and the phase with high density in the two-phase fluid is separated from the phase with low density due to the fact that the centrifugal force is large. After the low-density fluid is not blocked by the high-density fluid, the flow resistance of the low-density fluid is reduced, so that the overall flow resistance is reduced; the phenomena of non-uniform distribution and local overheating of the fluid in the flow channel are avoided, and the stability and the reliability of the evaporator are improved.

Description

Technical Field

[0001] The invention relates to the field of evaporators and provides an evaporator and a manufacturing method thereof. Background Art

[0002] Existing refrigerator evaporator technologies are mainly concentrated in three types: filled wire mesh type, slit channel type and sintered type. The filled wire mesh evaporator is simple to make, but the heat exchange loss caused by the gap and the pressure drop caused by the filling amount limit its performance. Although the slit channel evaporator has a high heat exchange efficiency, it is difficult to make, the influence of the channel wall thickness and the easy blockage also make it limited. The sintered evaporator has a high heat exchange area inside, but due to the difficulty of parameter control during the sintering process and the excessive fluid resistance, its heat exchange efficiency stability is poor.

[0003] The main problems faced by these existing evaporators include: high production cost, unstable heat exchange efficiency, large fluid resistance, and inability to handle two-phase flow. The filled wire mesh and slit channel evaporators are insufficient in heat exchange efficiency. Although the sintered evaporator has high heat exchange efficiency, it is difficult to ensure stability and the fluid resistance is also high. For refrigerators that require low resistance reflux, the application scope of the filled wire mesh evaporator is limited. Summary of the invention

[0004] The embodiment of the present invention provides an evaporator to solve the defect that phase separation cannot be achieved in the related art.

[0005] The embodiment of the present invention also provides a method for manufacturing an evaporator.

[0006] A first aspect of the present invention provides an evaporator, comprising: A flow channel, wherein the flow channel is spiral-shaped; A fluid inlet formed at a first end of the flow channel, wherein the fluid inlet is formed near the center of the spiral flow channel; A fluid outlet is formed at the second end of the flow channel. The fluid outlet is formed near the edge of the spiral flow channel, and the fluid outlet and the fluid inlet are in fluid communication through the flow channel.

[0007] According to an embodiment of the present invention, the cross-sectional areas of the flow channels are equal in the direction from the fluid inlet to the fluid outlet.

[0008] According to an embodiment of the present invention, the cross-sectional area of ​​the flow channel gradually increases from the fluid inlet to the fluid outlet.

[0009] According to an embodiment of the present invention, the evaporator comprises an evaporator body, a spiral groove is formed in the evaporator body, and the groove forms the flow channel.

[0010] According to an embodiment of the present invention, the evaporator comprises a seat body, the seat body is provided with a spiral groove, a copper tube is provided in the groove, and the copper tube forms the flow channel.

[0011] According to one embodiment of the present invention, the copper tube includes at least one of a red copper tube and an oxygen-free copper tube.

[0012] According to an embodiment of the present invention, the copper tube is welded to the groove.

[0013] A second aspect of the present invention provides a method for manufacturing the evaporator as described above, comprising: Setting the spiral flow channel; The fluid inlet is opened at a position close to the center of the flow channel, and the fluid outlet is opened at a position close to the edge of the flow channel.

[0014] According to one embodiment of the present invention, the step of providing the spiral flow channel comprises: The flow channel is formed using 3D printing technology.

[0015] According to one embodiment of the present invention, the step of providing the spiral flow channel comprises: Machining a seat of the evaporator; A spiral groove is provided on the seat body; A copper pipe is laid in the groove.

[0016] According to the evaporator provided by the embodiment of the first aspect of the present invention, the contact time and contact area between the fluid and the heat exchange surface of the evaporator are increased through the spiral flow channel design, thereby significantly improving the heat exchange efficiency. This helps the evaporator reach the required temperature or evaporation amount in a shorter time, and improves the performance of the overall system. Moreover, due to the setting of the spiral flow channel, the fluid will generate centrifugal force when it flows, and the phase with higher density in the two-phase fluid will be separated from the phase with lower density due to the larger centrifugal force. After the low-density fluid is not blocked by the high-density fluid, its flow resistance is reduced, thereby reducing the overall flow resistance. The position design of the fluid inlet and outlet enables the fluid to flow in the flow channel in a more uniform and stable manner. This avoids the uneven distribution and local overheating of the fluid in the flow channel, and improves the stability and reliability of the evaporator. According to the relevant theory of heat transfer, the centrifugal force exerted on the fluid in the spiral flow channel will enhance the heat exchange efficiency between the fluid and the wall. In addition, the high-density fluid in the fluid is the key part of extracting cold. The centrifugal force generated when the fluid enters the spiral flow channel. The phase with higher density inside the fluid will be thrown to the wall of the flow channel, thereby enhancing the heat exchange efficiency with the wall. The evaporator of the present invention has a compact structure and a reasonable design, and can adapt to a variety of different working environments and fluid conditions. This enables the evaporator to perform well in a wider range of application scenarios and improves the flexibility and adaptability of the system. The evaporator of the present invention achieves improved heat exchange efficiency, optimized fluid distribution, and enhanced system adaptability through a unique spiral flow channel design and a reasonable arrangement of fluid inlet and outlet positions. These technical effects make the evaporator of the present invention have broad application prospects in the fields of refrigeration, air conditioning, and chemical industry.

[0017] According to the method for manufacturing an evaporator provided by the embodiment of the second aspect of the present invention, the design of the spiral flow channel can greatly extend the flow path of the fluid, increase the contact time and area between the fluid and the inner wall of the evaporator, and thus improve the heat exchange efficiency. By rationally designing the position and size of the fluid inlet and outlet, it can be ensured that the fluid flows in the evaporator in a smooth and efficient manner, avoiding problems such as uneven fluid distribution and local overheating. The machining or laser cutting techniques used in this method are efficient and precise, and can greatly reduce production costs and improve production efficiency. The evaporator manufactured by this method is suitable for a variety of different working environments and fluid conditions, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic side view of an evaporator provided by the present invention.

[0020] Figure 2 yes Figure 1 Schematic cross-sectional view along the AA direction.

[0021] Figure 3 It is a schematic side view of another evaporator provided by the present invention.

[0022] Figure 4 yes Figure 3 Schematic cross-sectional view along the BB direction.

[0023] Figure 5 It is a schematic side view of another evaporator provided by the present invention.

[0024] Figure 6 It is a schematic flow chart of the method for manufacturing the evaporator provided by the present invention.

[0025] Reference numerals: 100, flow channel; 102, fluid inlet; 104, fluid outlet; 106, evaporator body; 108, groove; 110, seat; 112, copper tube. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] like Figures 1 to 5 As shown, the first embodiment of the present invention provides an evaporator, comprising: The flow channel 100 is spiral-shaped; A fluid inlet 102 is formed at a first end of the flow channel 100. The fluid inlet 102 is formed near the center of the spiral flow channel 100. The fluid outlet 104 is formed at the second end of the flow channel 100 . The fluid outlet 104 is formed near the edge of the spiral flow channel 100 , and the fluid outlet 104 is in fluid communication with the fluid inlet 102 through the flow channel 100 .

[0028] According to the evaporator provided by the embodiment of the first aspect of the present invention, the contact time and contact area between the fluid and the heat exchange surface of the evaporator are increased through the design of the spiral flow channel 100, thereby significantly improving the heat exchange efficiency. This helps the evaporator reach the required temperature or evaporation amount in a shorter time, and improves the performance of the overall system. Moreover, due to the setting of the spiral flow channel 100, the fluid will generate centrifugal force when it flows, and the phase with higher density in the two-phase fluid will be subjected to greater centrifugal force and thus separated from the phase with lower density. After the low-density fluid is not blocked by the high-density fluid, its flow resistance is reduced, thereby reducing the overall flow resistance. The position design of the fluid inlet 102 and the outlet enables the fluid to flow in the flow channel 100 in a more uniform and stable manner. This avoids the uneven distribution and local overheating of the fluid in the flow channel 100, and improves the stability and reliability of the evaporator. According to the relevant theory of heat transfer, the centrifugal force to which the fluid is subjected in the spiral flow channel 100 will enhance the heat exchange efficiency between the fluid and the wall. In addition, the high-density fluid in the fluid is a key part of extracting cold. The centrifugal force generated when the fluid enters the spiral flow channel 100. The phase with higher density inside the fluid will be thrown toward the wall of the flow channel 100, thereby enhancing the heat exchange efficiency with the wall. The evaporator of the present invention has a compact structure and reasonable design, and can adapt to a variety of different working environments and fluid conditions. This enables the evaporator to perform well in a wider range of application scenarios and improves the flexibility and adaptability of the system. The evaporator of the present invention achieves improved heat exchange efficiency, optimized fluid distribution, and enhanced system adaptability through the unique spiral flow channel 100 design and reasonable fluid inlet 102 and outlet position arrangement. These technical effects make the evaporator of the present invention have broad application prospects in the fields of refrigeration, air conditioning, chemical industry, etc.

[0029] Please continue to see Figures 1 to 5 The first embodiment of the present invention aims to provide an optimized evaporator structure, the core of which lies in its unique flow channel 100 design.

[0030] The flow channel 100 is designed to be spiral. This design helps to increase the flow path length of the fluid in the evaporator, thereby increasing the contact time and contact area between the fluid and the heat exchange surface of the evaporator, thereby enhancing the heat exchange efficiency. The spiral flow channel 100 can also guide the fluid to flow in a more uniform and stable manner, avoiding uneven distribution of the fluid in the flow channel 100 and local overheating.

[0031] The fluid inlet 102 is located at the first end of the flow channel 100 and close to the center of the spiral flow channel 100. Such a design allows the fluid to smoothly enter the spiral flow channel 100 and gradually diffuse outward in the flow channel 100, thereby ensuring uniform distribution of the fluid in the flow channel 100.

[0032] The fluid outlet 104 is located at the second end of the flow channel 100, close to the edge of the spiral flow channel 100. After passing through the spiral flow channel 100, the fluid flows out from the fluid outlet 104 at the edge. This design not only facilitates sufficient heat exchange of the fluid in the flow channel 100, but also ensures that the fluid has reached the required temperature or state when it flows out of the evaporator.

[0033] According to an embodiment of the present invention, the cross-sectional area of ​​the flow channel 100 is equal in the direction from the fluid inlet 102 to the fluid outlet 104 .

[0034] In one embodiment of the present invention, the design of the flow channel 100 of the evaporator is further optimized. Specifically, the cross-sectional area of ​​the flow channel 100 is kept equal in the direction from the fluid inlet 102 to the fluid outlet 104. This means that in the entire spiral flow channel 100, whether it is the inlet portion near the center or the outlet portion near the edge, the width (or diameter) of the flow channel 100 is consistent.

[0035] Such a design helps ensure that the fluid flows more evenly and stably in the flow channel 100. Since the cross-sectional areas of the flow channels 100 are equal, the fluid will not encounter sudden cross-sectional changes during the flow process, thereby avoiding fluid pressure fluctuations and flow velocity changes caused by cross-sectional changes. This helps reduce turbulence and eddy currents of the fluid in the flow channel 100, and improves the flow efficiency and heat exchange efficiency of the fluid.

[0036] Since the cross-sectional areas of the flow channels 100 are equal, the flow of the fluid in the flow channels 100 is more uniform. This helps to reduce local overheating and overcooling of the fluid in the flow channels 100 and improve the overall performance of the evaporator. Uniform fluid flow helps to improve heat exchange efficiency. When the fluid passes through the flow channels 100 at a stable speed and in a uniform manner, it contacts the heat exchange surface of the evaporator more fully, thereby achieving a higher heat exchange efficiency. Since the flow of the fluid in the flow channels 100 is more uniform and stable, the energy loss caused by fluid turbulence and eddy currents is reduced. This helps to reduce the energy consumption of the evaporator and improve the overall energy efficiency of the system. Uniform fluid flow and a stable heat exchange process help to reduce wear and corrosion inside the evaporator, thereby improving the reliability and durability of the evaporator.

[0037] According to an embodiment of the present invention, the cross-sectional area of ​​the flow channel 100 gradually increases from the fluid inlet 102 to the fluid outlet 104 .

[0038] In one embodiment of the present invention, considering that the fluid absorbs more and more heat when flowing in the evaporator, the fluid will gradually expand, and the flow channel 100 of the evaporator is designed to have a cross-sectional area that gradually increases from the fluid inlet 102 to the fluid outlet 104. This design means that when the fluid enters from the fluid inlet 102 near the center of the spiral flow channel 100, the cross-sectional area of ​​the flow channel 100 is small, and as the fluid flows toward the fluid outlet 104 near the edge of the flow channel 100, the cross-sectional area of ​​the flow channel 100 gradually increases.

[0039] This design is based on the principles of fluid mechanics and aims to optimize the flow state of the fluid in the flow channel 100 and improve the heat exchange efficiency. Specifically, the gradual increase in the cross-sectional area of ​​the flow channel 100 helps to reduce the resistance of the fluid during the flow process, allowing the fluid to pass through the flow channel 100 more smoothly. At the same time, the gradually increasing cross-sectional area of ​​the flow channel 100 can also accommodate more fluid, thereby increasing the contact area between the fluid and the heat exchange surface of the evaporator while maintaining a relatively stable fluid flow rate, thereby improving the heat exchange efficiency.

[0040] The gradual increase in the cross-sectional area of ​​the flow channel 100 helps to reduce the resistance of the fluid during the flow process, allowing the fluid to pass through the flow channel 100 more smoothly. This helps to reduce energy consumption and improve the overall energy efficiency of the system. The gradually increasing cross-sectional area of ​​the flow channel 100 can accommodate more fluid, increasing the contact area between the fluid and the heat exchange surface of the evaporator. At the same time, the stable fluid flow rate also helps to improve the heat exchange efficiency, allowing the evaporator to reach the required temperature or evaporation amount in a shorter time. The optimized design of the flow channel 100 helps to reduce the turbulence and eddy current phenomenon of the fluid in the flow channel 100, and reduce the scouring and wear of the fluid on the inside of the evaporator. This helps to improve the stability and reliability of the evaporator and extend its service life. Since the evaporator of the present invention has an optimized design of the flow channel 100 and a high heat exchange efficiency, it can adapt to a variety of different working environments and fluid conditions. This makes the evaporator have a wider range of application prospects in the fields of refrigeration, air conditioning, and chemical industry.

[0041] According to an embodiment of the present invention, the evaporator includes an evaporator body 106 , and a spiral groove 108 is formed in the evaporator body 106 , and the groove 108 forms a flow channel 100 .

[0042] In one embodiment of the present invention, the evaporator includes an evaporator body 106, in which spiral grooves 108 are carefully designed, and these grooves 108 constitute a fluid flow channel 100. This design combines structural innovation and functional efficiency to provide an evaporator with superior performance.

[0043] The material and structure of the evaporator body 106 need to be selected according to the actual application scenario to ensure that it can withstand the pressure and temperature fluctuations during operation. The design of the spiral groove 108 fully considers the flow characteristics and heat exchange efficiency of the fluid. The spiral shape of the groove 108 not only extends the flow path of the fluid, increases the contact time and area between the fluid and the inner wall of the evaporator body 106, thereby improving the heat exchange efficiency; at the same time, this design also helps to guide the fluid to flow in a more uniform and stable manner, avoiding uneven distribution of the fluid in the flow channel 100 and local overheating.

[0044] In addition, parameters such as the depth, width and spacing of the spiral grooves 108 also need to be accurately calculated and optimized to ensure that the fluid can maintain an appropriate flow rate and pressure drop during the flow process, thereby further improving the performance of the evaporator.

[0045] The design of the spiral groove 108 increases the contact time and area between the fluid and the inner wall of the evaporator body 106, thereby significantly improving the heat exchange efficiency. This enables the evaporator to reach the required temperature or evaporation amount in a shorter time, improving the performance of the overall system. The spiral groove 108 guides the fluid to flow in a more uniform and stable manner, avoiding uneven distribution of the fluid in the flow channel 100 and local overheating. This helps to reduce energy consumption and extend the service life of the evaporator. The evaporator body 106 can withstand pressure and temperature fluctuations during operation through a carefully designed structure. At the same time, the addition of the spiral groove 108 does not weaken the structural strength of the evaporator. On the contrary, through reasonable layout and parameter optimization, the evaporator has good stability and durability while maintaining high performance. Since the evaporator of the present invention has high heat exchange efficiency and optimized fluid flow characteristics, it can adapt to a variety of different working environments and fluid conditions. This makes the evaporator have broad application prospects in the fields of refrigeration, air conditioning, chemical industry, etc.

[0046] According to an embodiment of the present invention, the evaporator includes a base body 110 , on which a spiral groove 108 is disposed, and in which a copper tube 112 is disposed, and the copper tube 112 forms a flow channel 100 .

[0047] In one embodiment of the present invention, the evaporator includes a base 110, on which spiral grooves 108 are cleverly arranged. More uniquely, copper tubes 112 are embedded in the grooves 108, and the copper tubes 112 are the flow channels 100 for the fluid flow. This design combines structural innovation and functional efficiency, aiming to provide an evaporator with excellent performance.

[0048] The seat 110 is a supporting structure of the evaporator, and its material and manufacturing process must ensure that it can withstand various stresses and environmental conditions during operation. The design of the spiral groove 108 fully considers the flow characteristics and heat exchange efficiency of the fluid. By embedding the copper tube 112 into the groove 108, not only the flow path of the fluid is extended, but also the contact time and area between the fluid and the inner wall of the copper tube 112 are increased, thereby improving the heat exchange efficiency; at the same time, the spiral layout also helps to guide the fluid to flow in a more uniform and stable manner, avoiding uneven distribution of the fluid in the flow channel 100 and local overheating.

[0049] In addition, the copper tube 112 is used as the flow channel 100, and its material selection has also been carefully considered. Copper has good thermal conductivity and corrosion resistance, which can ensure efficient heat exchange between the fluid and the evaporator body 106 during the flow process, while resisting the corrosion of the fluid and extending the service life of the evaporator.

[0050] The combined design of the spiral groove 108 and the copper tube 112 greatly increases the contact time and area between the fluid and the inner wall of the copper tube 112, thereby significantly improving the heat exchange efficiency. This enables the evaporator to reach the required temperature or evaporation amount in a shorter time, improving the performance of the overall system. The layout of the spiral groove 108 helps to guide the fluid to flow in a more uniform and stable manner, avoiding uneven distribution of the fluid in the flow channel 100 and local overheating. This helps to reduce energy consumption and extend the service life of the evaporator. The seat body 110 serves as the supporting structure of the evaporator, and its sturdy design can withstand various stresses and environmental conditions during operation. At the same time, the combination of the spiral groove 108 and the copper tube 112 also enhances the overall structural strength and stability of the evaporator, allowing the evaporator to maintain excellent performance even in harsh working environments. As the material of the flow channel 100, the copper tube 112 has good corrosion resistance and wear resistance, can resist the corrosive effects of the fluid, and extend the service life of the evaporator. Since the evaporator of the present invention has high heat exchange efficiency, optimized fluid flow characteristics, enhanced structural strength and stability, and good corrosion resistance, it can adapt to a variety of different working environments and fluid conditions. This makes the evaporator have a wide range of application prospects in the fields of refrigeration, air conditioning, chemical industry, etc.

[0051] According to an embodiment of the present invention, the copper tube 112 includes at least one of a red copper tube 112 and an oxygen-free copper tube 112 .

[0052] In one embodiment of the present invention, the copper tube 112 in the evaporator is at least one of a red copper tube 112 and an oxygen-free copper tube 112. This design choice is intended to combine the advantages of different copper materials to meet the comprehensive requirements of the evaporator for heat exchange efficiency, corrosion resistance and mechanical strength.

[0053] The copper tube 112 generally refers to a copper tube 112 of high purity, which has good thermal conductivity and ductility. In the evaporator, the copper tube 112 can quickly transfer heat from the fluid to other parts of the evaporator, thereby improving the heat exchange efficiency. At the same time, the copper tube 112 is also relatively corrosion-resistant and can maintain stable performance in a variety of fluid environments.

[0054] The oxygen-free copper tube 112 strictly controls the oxygen content during the manufacturing process to obtain higher purity and better mechanical properties. The oxygen-free copper tube 112 not only has excellent thermal conductivity, but also has high strength and hardness, and can withstand various stresses and pressures during the operation of the evaporator. In addition, the corrosion resistance of the oxygen-free copper tube 112 is also very good, and it can maintain long-term stability in harsh fluid environments.

[0055] In the embodiment of the present invention, by selecting at least one of the red copper tube 112 and the oxygen-free copper tube 112 as the material of the flow channel 100 of the evaporator, the advantages of these two copper materials can be fully utilized to improve the heat exchange efficiency, corrosion resistance and mechanical strength of the evaporator.

[0056] Both the copper tube 112 and the oxygen-free copper tube 112 have good thermal conductivity and can quickly transfer heat from the fluid to other parts of the evaporator, thereby improving the heat exchange efficiency. This helps the evaporator reach the required temperature or evaporation amount in a shorter time and improves the performance of the overall system. Both the copper tube 112 and the oxygen-free copper tube 112 show good corrosion resistance and can maintain stable performance under a variety of fluid environments. This helps to extend the service life of the evaporator and reduce the maintenance and replacement costs caused by corrosion. The oxygen-free copper tube 112 has high strength and hardness and can withstand various stresses and pressures during the operation of the evaporator. This helps to ensure that the evaporator can maintain stable performance even in harsh working environments and improve the reliability and safety of the system. By selecting at least one of the copper tube 112 and the oxygen-free copper tube 112 as the material of the flow channel 100 of the evaporator, flexible material matching can be performed according to specific application scenarios and needs. This helps to meet the performance requirements of different customers for the evaporator and improve the market competitiveness of the product.

[0057] According to one embodiment of the present invention, the copper tube 112 is welded to the groove 108 .

[0058] In one embodiment of the present invention, the copper tube 112 in the evaporator is fixed in the groove 108 on the base 110 by welding. This design choice is intended to ensure that the connection between the copper tube 112 and the groove 108 is firm and reliable while maintaining good heat conduction performance.

[0059] Specifically, during the welding process, one end or the entire length of the copper tube 112 is precisely placed in the groove 108 on the seat body 110. Then, using appropriate welding techniques and materials (such as copper welding wire or solder paste), welding is performed on the contact surface of the copper tube 112 and the groove 108. After welding is completed, a strong and sealed connection will be formed between the copper tube 112 and the groove 108, which helps prevent fluid leakage and ensures that heat can be effectively transferred from the fluid to the seat body 110.

[0060] In addition, the choice of welding method is also carefully considered. In order to ensure welding quality and heat conductivity, a welding method that is compatible with the material of the copper tube 112 is usually selected, such as TIG welding (tungsten inert gas welding) or MIG welding (metal inert gas welding). These methods can provide high-quality welded joints while maintaining the thermal conductivity of the copper tube 112.

[0061] Fixing the copper tube 112 in the groove 108 by welding can ensure that the connection between the copper tube 112 and the groove 108 is firm and reliable. This connection method can withstand various stresses and pressures during the operation of the evaporator, thereby improving the overall structural strength of the evaporator. The sealed connection formed by welding can effectively prevent the fluid from leaking out from the gap between the copper tube 112 and the groove 108. This helps to maintain the normal working state of the evaporator and avoid performance degradation or failure due to leakage. The welding materials and methods used in the welding process are compatible with the material of the copper tube 112, so the thermal conductivity of the copper tube 112 can be kept intact. This helps to ensure that heat can be effectively transferred from the fluid to the seat 110, thereby improving the heat exchange efficiency of the evaporator. The welding method is efficient and fast, which can greatly improve the production efficiency of the evaporator. At the same time, since no additional connectors or seals are required during the welding process, the production cost can be reduced.

[0062] like Figure 6 As shown, the second aspect of the present invention provides a method for manufacturing the evaporator as described above, comprising: Step 10, setting a spiral flow channel 100; Step 20 , opening a fluid inlet 102 near the center of the flow channel 100 , and opening a fluid outlet 104 near the edge of the flow channel 100 .

[0063] According to the manufacturing method of the evaporator provided by the embodiment of the second aspect of the present invention, the design of the spiral flow channel 100 can greatly extend the flow path of the fluid, increase the contact time and area between the fluid and the inner wall of the evaporator, and thus improve the heat exchange efficiency. By rationally designing the position and size of the fluid inlet 102 and the outlet, it can be ensured that the fluid flows in the evaporator in a smooth and efficient manner, avoiding problems such as uneven fluid distribution and local overheating. The mechanical processing or laser cutting techniques used in this method are efficient and precise, and can greatly reduce production costs and improve production efficiency. The evaporator manufactured by this method is suitable for a variety of different working environments and fluid conditions, and has broad application prospects.

[0064] Please continue to see Figure 6 The manufacturing method of the evaporator is suitable for manufacturing an evaporator with a spiral flow channel 100.

[0065] Step 10: Setting the Spiral Flow Channel 100 In this step, it is necessary to set spiral grooves 108 on the evaporator body 106 (or the seat 110), and these grooves 108 will constitute the flow channel 100 for the fluid flow. The method of setting the spiral flow channel 100 can be selected according to the specific process and equipment. For example, the grooves 108 can be formed by mechanical processing (such as milling, drilling, etc.) or laser cutting. Parameters such as the depth, width and spacing of the grooves 108 should be accurately calculated and optimized according to the flow characteristics of the fluid and the requirements of heat exchange efficiency.

[0066] Step 20: Open the fluid inlet 102 and outlet After the spiral channel 100 is set, the fluid inlet 102 and the fluid outlet 104 need to be opened at appropriate positions. The fluid inlet 102 should be set near the center of the channel 100 so that the fluid can smoothly enter the spiral channel 100. The fluid outlet 104 should be set near the edge of the channel 100 so that the fluid can smoothly flow out of the evaporator after completing the heat exchange. The size and shape of the fluid inlet 102 and the outlet should be reasonably designed according to parameters such as the flow rate and pressure of the fluid to ensure that the fluid can flow smoothly and efficiently.

[0067] During the production process, other steps such as cleaning and testing can be added as needed to ensure that the quality and performance of the evaporator meet the requirements.

[0068] According to one embodiment of the present invention, the step of providing the spiral flow channel 100 includes: The flow channel 100 is formed using 3D printing technology.

[0069] In one embodiment of the present invention, the step of providing the spiral flow channel 100 uses 3D printing technology. This innovative method aims to utilize the high precision and flexibility of 3D printing technology to quickly and accurately form a complex spiral flow channel 100 structure.

[0070] Specifically, 3D printing technology is a technology that stacks materials layer by layer to form a three-dimensional object. In an embodiment of the present invention, a digital model of the spiral flow channel 100 is first created using computer-aided design software (CAD). Then, this digital model is imported into a 3D printer to accurately replicate the shape and structure of the spiral flow channel 100 by stacking materials (such as plastic, metal or ceramic, etc.) layer by layer.

[0071] 3D printing technology has significant advantages over traditional manufacturing methods. First, it can replicate complex geometries, such as the spiral flow channel 100, with very high accuracy and detail. Second, 3D printing technology is highly flexible and can quickly adjust and optimize the design as needed. In addition, 3D printing technology can also achieve rapid prototyping and small batch production, thereby greatly shortening the product development and manufacturing cycle.

[0072] 3D printing technology can replicate the shape and structure of the spiral flow channel 100 with very high accuracy, thereby ensuring the performance and reliability of the evaporator. Compared with traditional manufacturing methods, 3D printing technology can greatly shorten the manufacturing cycle of the evaporator, thereby accelerating the time to market. Since 3D printing technology can achieve rapid prototyping and small batch production, the manufacturing cost of the evaporator can be reduced. 3D printing technology allows designers to have a higher degree of freedom when creating the spiral flow channel 100, making it easier to achieve complex geometries and optimize designs. 3D printing technology can also achieve personalized customization of evaporators to meet the needs and requirements of different customers.

[0073] According to one embodiment of the present invention, the step of providing the spiral flow channel 100 includes: Machining a seat 110 of the evaporator; A spiral groove 108 is provided on the seat body 110; A copper tube 112 is laid in the groove 108 .

[0074] In one embodiment of the present invention, the step of providing the spiral flow channel 100 combines machining and copper tube 112 laying techniques to create an efficient and durable evaporator structure.

[0075] First, the seat 110 of the evaporator is precisely manufactured by mechanical processing technology (such as milling, drilling or grinding). The seat 110 is the main structure of the evaporator, which is used to support and accommodate the spiral flow channel 100. During the machining process, it is necessary to ensure that the dimensional accuracy, surface roughness and geometric shape of the seat 110 meet the design requirements so that the subsequent steps can proceed smoothly.

[0076] After the machining of the seat body 110 is completed, the spiral groove 108 needs to be opened on the seat body 110. The spiral groove 108 will serve as a channel for the flow of the fluid, and its parameters such as shape, size and depth should be accurately calculated and optimized according to the flow characteristics of the fluid and the requirements of heat exchange efficiency. When opening the groove 108, milling, laser cutting or electric spark machining can be used to ensure the accuracy and surface quality of the groove 108.

[0077] Finally, the copper tube 112 is laid in the spiral groove 108. As a carrier for the flow of fluid, the copper tube 112 needs to have good thermal conductivity and corrosion resistance. When laying the copper tube 112, welding, brazing or expansion joints can be used to firmly fix the copper tube 112 in the groove 108 to ensure the sealing of the fluid and the heat exchange efficiency. At the same time, it is also necessary to pay attention to the gap control between the copper tube 112 and the groove 108 to avoid problems such as fluid leakage and local overheating.

[0078] The design of the spiral groove 108 greatly extends the flow path of the fluid, increases the contact time and area between the fluid and the seat 110 and the copper tube 112, and thus improves the heat exchange efficiency. By accurately calculating and optimizing the parameters such as the shape, size and depth of the spiral groove 108, it is possible to ensure that the fluid flows in the evaporator in a smooth and efficient manner, avoiding problems such as uneven fluid distribution and local overheating. The evaporator manufactured using machining and copper tube 112 laying technology has higher structural strength and corrosion resistance, and can withstand higher working pressures and temperature fluctuations, thereby extending the service life of the evaporator. Machining and copper tube 112 laying technology are both mature manufacturing processes with the characteristics of high efficiency and precision, which can greatly shorten the manufacturing cycle of the evaporator and reduce costs.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An evaporator, characterized in that: include: A flow channel (100), wherein the flow channel (100) is spiral-shaped; A fluid inlet (102) is formed at a first end of the flow channel (100), and the fluid inlet (102) is formed near the center of the spiral flow channel (100); A fluid outlet (104) is formed at the second end of the flow channel (100), the fluid outlet (104) is formed near the edge of the spiral flow channel (100), and the fluid outlet (104) and the fluid inlet (102) are in fluid communication through the flow channel (100).

2. The evaporator according to claim 1, characterized in that The cross-sectional area of ​​the flow channel (100) is equal in the direction from the fluid inlet (102) to the fluid outlet (104).

3. The evaporator according to claim 1, characterized in that In a direction from the fluid inlet (102) to the fluid outlet (104), the cross-sectional area of ​​the flow channel (100) gradually increases.

4. The evaporator according to any one of claims 1 to 3, characterized in that: The evaporator comprises an evaporator body (106), a spiral groove (108) is formed in the evaporator body (106), and the groove (108) forms the flow channel (100).

5. The evaporator according to any one of claims 1 to 3, characterized in that: The evaporator comprises a seat body (110), the seat body (110) being provided with a spiral groove (108), a copper tube (112) being provided in the groove (108), and the copper tube (112) forming the flow channel (100).

6. The evaporator according to claim 5, characterized in that The copper tube (112) comprises at least one of a red copper tube (112) and an oxygen-free copper tube (112).

7. The evaporator according to claim 5, characterized in that The copper tube (112) is welded to the groove (108).

8. A method for manufacturing an evaporator according to any one of claims 1 to 7, characterized in that: include: Providing a spiral flow channel (100); The fluid inlet (102) is opened at a position close to the center of the flow channel (100), and the fluid outlet (104) is opened at a position close to the edge of the flow channel (100).

9. The manufacturing method according to claim 8, characterized in that: The step of providing the spiral flow channel (100) comprises: The flow channel (100) is formed using 3D printing technology.

10. The manufacturing method according to claim 8, characterized in that: The step of providing the spiral flow channel (100) comprises: Machining a seat (110) of the evaporator; A spiral groove (108) is provided on the seat body (110); A copper pipe (112) is laid in the groove (108).

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