An energy-saving finned heat exchanger and a method of using the same

Abstract

The present application relates to heat exchange technology field, specifically disclose a kind of energy-saving finned heat exchanger, including shell, the inside of shell is equipped with top plate and bottom plate, annular array fixed plug-in is used for heat exchange finned tube between top plate and bottom plate, the inside of finned tube is equipped with rotating stand, rotating stand top is equipped with rotating rod, the bottom of rotating rod and rotating stand is equipped with elastic film, heat exchanger further includes drive assembly, is equipped above finned tube, drive assembly is used to drive rotating rod, rotating stand and elastic film are rotated, for generating centrifugal force and liquid is thrown to the inner wall of finned tube, adjusting component, for adjusting the distance between elastic film and finned tube inner wall, by the cooperation of above structure, can reduce the situation that liquid accumulation appears above elastic film, to reduce the effect of liquid is thrown out by centrifugal force by elastic film, to improve the effect that liquid forms liquid film and adheres to the inner wall of finned tube, to improve the uniformity of heat exchange.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, and in particular to an energy-saving finned heat exchanger and its usage method. Background Technology

[0002] Finned tube heat exchangers are a type of finned heat exchanger. They are high-efficiency heat exchange devices that enhance heat transfer by adding fins to the surface of the base tube. They are widely used in food processing, industry, HVAC, refrigeration and other fields. They are a common type of intelligent heat exchange device. Finned tube heat exchangers can be used when heating and sterilizing beverage products.

[0003] In traditional tubular heat exchangers, the liquid near the inner wall of the pipe typically absorbs more heat, achieving a better heat exchange effect. However, the heat exchange efficiency of the liquid in the middle of the pipe is poor, affecting the heating and sterilization effect of the beverage. To solve the problem of uneven heat exchange between the middle and the inner wall of the heat exchange pipe, the technical solution of "A Waste Heat Recovery Power Generation System for a Propane Dehydrogenation Device" (publication number CN119042601A) includes a heat exchange device. Through the action of a rotating component, the fixed frame rotates, thereby causing a portion of the elastic membrane to rotate. This provides centrifugal force to the liquid working fluid falling on the elastic membrane, causing the liquid working fluid to fall against the inner wall of the heat exchange pipe as a liquid film. This keeps the liquid flowing downward close to the inner wall of the heat exchange pipe, avoiding the situation of poor heat exchange in the middle of the heat exchange pipe.

[0004] However, in the above scheme, as liquid is continuously added to the heat exchange equipment, when the liquid enters the heat exchange pipe, a large amount of liquid tends to accumulate above the fixed frame and elastic membrane. The accumulation of liquid increases the mass of the liquid above the point where it is thrown out, and enhances its inertia. As a result, a greater centrifugal force is required to throw the liquid out, which affects the effect of the liquid adhering to the inner wall of the heat exchange pipe when it is thrown out, thus affecting the uniformity of heat exchange. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving finned heat exchanger and its usage method, which can reduce the accumulation of liquid above the elastic membrane, thereby reducing the impact on the elastic membrane's ability to throw the liquid out through centrifugal force, thus improving the effect of liquid forming a liquid film adhering to the inner wall of the finned tube, thereby improving the uniformity of heat exchange, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving finned heat exchanger, comprising a shell, a top plate and a bottom plate disposed inside the shell, finned tubes for heat exchange being fixedly inserted in a ring array between the top plate and the bottom plate, a rotating frame disposed inside the finned tubes, a rotating rod disposed above the rotating frame, and an elastic membrane disposed between the bottom of the rotating rod and the rotating frame, characterized in that the heat exchanger further comprises:

[0007] The drive assembly, located above the finned tube, is used to drive the rotating rod, rotating frame, and elastic membrane to rotate, thereby generating centrifugal force to throw the liquid toward the inner wall of the finned tube.

[0008] An adjustment component is used to adjust the distance between the elastic membrane and the inner wall of the finned tube, thereby adjusting the thickness of the liquid film;

[0009] A limiting component, disposed inside the finned tube, is used to block part of the liquid from entering the upper position of the elastic membrane and limit the flow rate of the liquid entering the upper position of the elastic membrane. The limiting component includes a ring array rotatably connected to a rotating bar on the top of the inner side of the finned tube, and an elastic membrane is fixedly connected between the top of the rotating bar and the inner wall of the finned tube.

[0010] Preferably, a partition is fixed to the inner wall of the outer casing above the top plate, and a lifting plate slides on the inner wall of the outer casing above the partition. The top of the outer wall of the rotating rod is rotatably connected to the partition. The drive assembly includes a motor fixedly connected to the bottom of the lifting plate. A slide rod is slidably connected to the output shaft of the motor. The bottom of the slide rod rotates with the partition. A drive gear is fixedly connected to the bottom of the slide rod. The drive assembly also includes a driven gear fixedly connected to the top outer wall of the rotating rod. Multiple driven gears mesh with the drive gear.

[0011] Preferably, a round rod is fixedly connected between the rotating frame and the rotating rod. The adjusting assembly includes a motion frame slidably connected inside the rotating rod. A pressing disc is fixedly connected to the bottom of the motion frame, which extends into the interior of the elastic membrane. The pressing disc is slidably connected to the round rod. The adjusting assembly also includes a ring fixedly connected inside the rotating rod. A spring is fixedly connected between the ring and the motion frame. The adjusting assembly also includes a slide frame slidably connected to the top of the rotating frame in a ring array. A push plate is fixedly connected to the outer wall of the slide frame. The outer side of the push plate is fixedly connected to the elastic membrane.

[0012] Preferably, the push plate near the extrusion plate and the extrusion plate near the push plate are both inclined.

[0013] Preferably, the adjustment assembly further includes an electric telescopic rod fixedly connected to the top of the inner side of the housing, the output shaft of the electric telescopic rod being fixedly connected to the lifting plate, and a ball bearing being rotatably connected to the top of the motion frame.

[0014] Preferably, the heat exchanger further includes:

[0015] An adjustment assembly, located at the bottom of the rotating bar, is used to adjust the flow rate of the liquid falling above the elastic membrane. The adjustment assembly includes small rods fixedly connected to both sides of the outer wall of the carriage. A rotating ring is fixedly connected to the side of the small rod away from the carriage through the rotating rod. A squeezing frame is rotatably connected to the top of the rotating ring. The top of the squeezing frame is arc-shaped near the rotating bar.

[0016] Preferably, a slot is provided near the small rod on the rotating rod, and a flexible membrane is fixedly connected inside the slot. The interior of the flexible membrane is fixedly connected to the small rod.

[0017] Preferably, the heat exchanger further includes:

[0018] The gathering assembly is positioned above the rotating ring. The gathering assembly includes an inclined ring fixedly connected inside the finned tube, with the inner side of the inclined ring inclined. The gathering assembly also includes a movable rod slidably connected inside the extrusion frame, with the movable rod inclined near the inclined ring. The gathering assembly also includes a gathering film fixedly connected inside the extrusion frame, with the movable rod extending into the extrusion frame and a compression arc plate fixedly connected near the gathering film.

[0019] Preferably, the extrusion arc plate is set at an angle.

[0020] An energy-saving finned heat exchanger method includes the following steps:

[0021] S1, Liquid Inlet: Add the liquid that needs to be heated into the shell above the top plate. The liquid flows into the interior of the finned tube.

[0022] S2, heat exchange: Steam is added to the interior of the shell between the top and bottom plates to exchange heat with the liquid inside the finned tubes.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. By limiting the function of the components, the area of ​​the space between the elastic membrane and the rotating bar is smaller than that between the bottom of the elastic membrane and the inner side of the finned tube. The elastic membrane and the rotating bar block the liquid falling from the top of the finned tube, reducing the accumulation of liquid above the elastic membrane. This reduces the impact on the effect of the elastic membrane in throwing the liquid out by centrifugal force, thereby improving the effect of the liquid forming a liquid film adhering to the inner wall of the finned tube and thus improving the uniformity of heat exchange.

[0025] 2. The design of the rotating strip and elastic membrane also limits the space for downward flow of liquid, which helps the liquid to flow evenly into the interior of each finned tube;

[0026] 3. By adjusting the function of the components, the distance between the elastic membrane and the rotating rod can be adjusted according to the required thickness of the liquid film, and the flow rate of the liquid flowing down from between the elastic membrane and the rotating rod can be adjusted accordingly, thereby controlling the amount of liquid entering the elastic membrane and avoiding insufficient liquid falling to the elastic membrane when the elastic membrane is far from the inside of the finned tube, which would affect the thickness of the liquid film.

[0027] 4. The gathering component facilitates the guidance of the incoming liquid towards the rotating rod. When the liquid begins to fall from the top of the elastic membrane, it needs to undergo an acceleration phase. During this phase, the liquid fully contacts the surface of the prism and gains kinetic energy through viscous force or friction. This avoids insufficient initial velocity, which would result in a weak ejection. It ensures that the liquid reaches a sufficient speed before being ejected, thereby improving the liquid's adhesion to the inner wall of the finned tube and thus improving the uniformity of heat exchange. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is an overall structural view of the present invention;

[0030] Figure 2 This is a schematic diagram of the half-section structure of the present invention;

[0031] Figure 3 This is a schematic diagram of a half-section of the top of the outer casing of the present invention;

[0032] Figure 4 This is a partial top view of the motor structure of the present invention;

[0033] Figure 5 This is a partial cross-sectional view of the partition of the present invention;

[0034] Figure 6 This is a half-sectional view of the top position of the finned tube of the present invention;

[0035] Figure 7 This is a partial overhead cross-sectional view of the finned tube of the present invention;

[0036] Figure 8 This is a half-sectional view of the rotating rod of the present invention;

[0037] Figure 9 This is a top cross-sectional view of the elastic membrane of the present invention;

[0038] Figure 10 This is a schematic diagram of a half-section of the inclined ring of the present invention;

[0039] Figure 11 This is a bottom view of the rotating ring structure of the present invention;

[0040] Figure 12 This is a partial bottom view of the extrusion arc plate of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Outer shell; 2. Top plate; 3. Bottom plate; 4. Finned tube; 5. Limiting assembly; 51. Rotating bar; 52. Elastic membrane; 6. Drive assembly; 61. Motor; 62. Slide rod; 63. Drive gear; 64. Driven gear; 7. Adjustment assembly; 71. Moving frame; 72. Extrusion plate; 73. Ring; 74. Spring; 75. Slide; 76. Push plate; 77. Electric telescopic rod; 78. Ball; 8. Adjustment assembly; 81. Small rod; 82. Rotating ring; 83. Extrusion frame; 9. Gathering assembly; 91. Inclined ring; 92. Gathering membrane; 93. Moving rod; 94. Extrusion arc plate; 10. Rotating frame; 11. Rotating rod; 12. Elastic membrane; 13. Partition; 14. Lifting plate; 15. Round rod; 16. Hollow groove; 17. Flexible membrane. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1: Please refer to Figures 1 to 12 The present invention provides a technical solution: an energy-saving finned heat exchanger, including an outer shell 1 made of multiple shell sections, which are fixed together by flanges. The outer shell 1 is equipped with a top plate 2 and a bottom plate 3. The top plate 2 is located above the bottom plate 3. Finned tubes 4 for heat exchange are fixedly inserted in a ring array between the top plate 2 and the bottom plate 3. Fins are fixed on the outside of the finned tubes 4 to increase the heat exchange area between the medium inside the finned tubes 4 and the outside of the finned tubes 4.

[0045] A liquid inlet pipe is fixedly inserted above the top plate 2 in the outer shell 1, and a liquid outlet pipe for discharging the liquid after heat exchange is fixedly inserted at the bottom of the outer shell 1. A steam inlet pipe and a steam outlet pipe are fixedly inserted between the top plate 2 and the bottom plate 3 in the outer shell 1. The steam inlet pipe is located below the steam outlet pipe. During heat exchange, the beverage that needs to be heated and sterilized enters through the liquid inlet pipe, and then the liquid enters multiple finned tubes 4 for softening and heating. Then, it enters the bottom of the bottom plate 3 from the finned tubes 4 and is discharged from the liquid outlet pipe.

[0046] High-temperature steam is injected through the lower steam inlet pipe. The high-temperature steam is used to exchange heat with the liquid beverage inside the finned tube 4. The gas after heat exchange is discharged from the steam outlet pipe.

[0047] When a low-temperature beverage enters the finned tube 4, it will exchange heat with high-temperature steam to achieve high-temperature sterilization.

[0048] It should be noted that the top of the multiple finned tubes 4 is higher than the top of the top plate 2, and the tops of the multiple finned tubes 4 are flush.

[0049] The finned tube 4 is internally equipped with a rotating frame 10, and a rotating rod 11 is positioned above the rotating frame 10. An elastic membrane 12 is positioned between the bottom of the rotating rod 11 and the rotating frame 10. The heat exchanger also includes a drive assembly 6 positioned above the finned tube 4. The drive assembly 6 is used to drive the rotating rod 11, the rotating frame 10, and the elastic membrane 12 to rotate, thereby generating centrifugal force to throw the liquid toward the inner wall of the finned tube 4. A partition 13 is fixed above the top plate 2 on the inner wall of the outer shell 1. A lifting plate 14 slides above the partition 13 on the inner wall of the outer shell 1. The top of the outer wall of the rotating rod 11 is rotatably connected to the partition 13. The drive assembly 6 includes a motor 61 fixedly connected to the bottom of the lifting plate 14. A slide rod 62 is slidably connected to the output shaft of the motor 61. The bottom of the slide rod 62 rotates with the partition 13. A drive gear 63 is fixedly connected to the bottom of the slide rod 62. The drive assembly 6 also includes a driven gear 64 fixedly connected to the top outer wall of the rotating rod 11. Multiple driven gears 64 mesh with the drive gear 63.

[0050] By adopting the above technical solution, during heat exchange, the output shaft of the motor 61 rotates, which causes the drive gear 63 to rotate. Under the meshing action of the drive gear 63 and the driven gear 64, the driven gear 64 can rotate. In this way, the driven gear 64 can drive the rotating rod 11 to rotate. When the rotating rod 11 rotates, the elastic membrane 12 and the rotating frame 10 can rotate accordingly. When the liquid enters from the top of the finned tube 4 and falls above the elastic membrane 12, with the rotation of the elastic membrane 12 and the rotating frame 10, the liquid can be thrown out to the inner wall of the finned tube 4 by centrifugal force. This facilitates the liquid and liquid film to flow downward along the inner wall of the finned tube 4, thereby helping to reduce uneven heat exchange of liquid beverages.

[0051] The heat exchanger also includes an adjustment assembly 7 disposed inside the housing 1 for adjusting the distance between the elastic membrane 12 and the inner wall of the finned tube 4, thereby adjusting the thickness of the liquid film. A round rod 15 is fixedly connected between the rotating frame 10 and the rotating rod 11. The adjustment assembly 7 includes a moving frame 71 slidably connected inside the rotating rod 11. The bottom of the moving frame 71 extends into the interior of the elastic membrane 12 and is fixedly connected to a pressing disc 72. The pressing disc 72 is slidably connected to the round rod 15. The adjustment assembly 7 also includes a ring 73 fixedly connected inside the rotating rod 11. The ring 73 is connected to the moving frame 71. A spring 74 is fixedly connected between the two parts. The adjustment assembly 7 also includes a slide 75 that is slidably connected to the top of the rotating frame 10 in a ring array. A push plate 76 is fixedly connected to the outer wall of the slide 75. The outer side of the push plate 76 is fixedly connected to the elastic membrane 12. The push plate 76 near the extrusion plate 72 and the extrusion plate 72 near the push plate 76 are both inclined. The adjustment assembly 7 also includes an electric telescopic rod 77 fixedly connected to the top of the inner side of the outer shell 1. The output shaft of the electric telescopic rod 77 is fixedly connected to the lifting plate 14. A ball 78 is rotatably connected to the top of the moving frame 71.

[0052] The design of the slide rod 62 being rotatably connected to the output shaft of the motor 61 ensures that the slide rod 62 and the motor 61 do not affect the up-and-down movement of the lifting plate 14.

[0053] It should be noted that the ball 78 is used to reduce the friction between the motion frame 71 and the lifting plate 14. Under the elastic force of the spring 74, the top of the ball 78 contacts the bottom surface of the lifting plate 14.

[0054] The bottom of the outer casing 1 is equipped with a thermometer for temperature monitoring. When the temperature of the beverage after heat exchange is higher than the set value, it is necessary to control the increase of the liquid film thickness. Conversely, when the temperature of the beverage after heat exchange is lower than the set value, it is necessary to control the decrease of the liquid film thickness. The thermometer transmits the temperature signal to the peripheral controller, and the controller controls the output shaft of the electric telescopic rod 77 to extend and retract. This design facilitates intelligent control of the liquid temperature.

[0055] By adopting the above technical solution, when it is necessary to increase the thickness of the liquid film formed by the falling liquid, the output shaft of the electric telescopic rod 77 extends, causing the lifting plate 14 to move downward and squeeze the ball 78. At this time, the ball 78 moves downward with the moving frame 71, and the spring 74 is compressed, causing the squeezing plate 72 to move downward. At this time, under the elastic force of the elastic membrane 12, the elastic membrane 12 moves towards the center, and multiple push plates 76 move towards the center, thus increasing the distance between the elastic membrane 12 and the inner side of the finned tube 4, thereby increasing the thickness of the liquid film.

[0056] When it is necessary to reduce the thickness of the liquid film formed by the falling liquid, the output shaft of the electric telescopic rod 77 retracts, causing the lifting plate 14 to move upward. Under the elastic force of the spring 74, the ball 78 moves the moving frame 71 upward, thereby causing the extrusion plate 72 to move upward. At this time, multiple push plates 76 move outward, and the push plates 76 squeeze and expand the elastic membrane 12, which can reduce the distance between the elastic membrane 12 and the inner side of the finned tube 4, thereby reducing the thickness of the liquid film.

[0057] It should be noted that the elastic force of spring 74 is much greater than that of elastic diaphragm 12.

[0058] The heat exchanger also includes a limiting component 5 disposed inside the finned tube 4 to block some liquid from entering the upper position of the elastic membrane 12 and limit the flow rate of liquid entering the upper position of the elastic membrane 12. The limiting component 5 includes a ring array rotatably connected to a rotating bar 51 on the top of the inner side of the finned tube 4. An elastic membrane 52 is fixedly connected between the top of the rotating bar 51 and the inner wall of the finned tube 4.

[0059] It should be noted that there are multiple rotating bars 51, and the rotating bars 51 are set at an angle.

[0060] By adopting the above technical solution, the area of ​​the space formed between the elastic membrane 52 and the rotating rod 11 is smaller than that between the bottom of the elastic membrane 12 and the inner side of the finned tube 4. The elastic membrane 52 and the rotating rod 51 block the liquid falling from the top of the finned tube 4, reducing the occurrence of liquid accumulation above the elastic membrane 12. This reduces the impact on the effect of the elastic membrane 12 in throwing the liquid out by centrifugal force, thereby improving the effect of the liquid forming a liquid film adhering to the inner wall of the finned tube 4, and thus improving the uniformity of heat exchange.

[0061] It should be noted that the liquid that needs heat exchange continuously enters the top plate 2. During use, the liquid level is higher than the top of the finned tube 4. The design of the rotating bar 51 and the elastic membrane 52 limits the space for the liquid to flow downward, which helps the liquid to flow evenly into the interior of each finned tube 4.

[0062] The heat exchanger also includes an adjustment assembly 8 disposed at the bottom of the rotating bar 51. The adjustment assembly 8 is used to adjust the flow rate of the liquid falling above the elastic membrane 12. The adjustment assembly 8 includes small rods 81 fixedly connected to both sides of the outer wall of the slide 75. A rotating ring 82 is fixedly connected to the side of the small rod 81 away from the slide 75 through the rotating rod 11. A squeezing frame 83 is rotatably connected to the top of the rotating ring 82. The top of the squeezing frame 83 is arc-shaped near the rotating bar 51. A slot 16 is opened near the small rod 81 on the rotating rod 11. A flexible membrane 17 is fixedly connected inside the slot 16. The interior of the flexible membrane 17 is fixedly connected to the small rod 81.

[0063] It should be noted that the flexible membrane 17 design ensures the internal sealing of the rotating rod 11 without affecting the up-and-down movement of the small rod 81.

[0064] By adopting the above technical solution, when it is necessary to reduce the thickness of the liquid film, the upward movement of the motion frame 71 causes the small rod 81 to move upward with the rotating ring 82, and the rotating ring 82 to move upward with the extrusion frame 83. At this time, the extrusion frame 83 extrudes multiple rotating bars 51, causing the rotating bars 51 to deflect the elastic membrane 52 upward. At this time, the area of ​​the space between the elastic membrane 52 and the rotating rod 11 is reduced, thereby reducing the flow rate of liquid to the elastic membrane 12.

[0065] When it is necessary to increase the thickness of the liquid film, the downward movement of the motion frame 71 causes the small rod 81 to move downward with the rotating ring 82, and the rotating ring 82 to move downward with the extrusion frame 83. At this time, under the action of the rotating bar 51 and the liquid pressure, the rotating bar 51 causes the elastic membrane 52 to deflect downward. At this time, the area of ​​the space between the elastic membrane 52 and the rotating rod 11 increases, thereby increasing the flow rate of the liquid flowing to the elastic membrane 12.

[0066] This design allows for adjustment of the distance between the elastic membrane 52 and the rotating rod 11 according to the required thickness of the liquid film, thereby adjusting the flow rate of the liquid flowing down between the elastic membrane 52 and the rotating rod 11. This controls the amount of liquid entering the elastic membrane 12 and prevents insufficient liquid from falling to the elastic membrane 52 when the elastic membrane 52 is far from the interior of the finned tube 4, which would affect the thickness of the liquid film.

[0067] Example 2: The technical solution of this example differs from that of Example 1 in that: Figures 1 to 2 and Figures 5 to 12 The heat exchanger also includes a collection assembly 9 disposed above the rotating ring 82. The collection assembly 9 includes an inclined ring 91 fixedly connected inside the finned tube 4. The inner side of the inclined ring 91 is inclined. The collection assembly 9 also includes a moving rod 93 slidably connected inside the extrusion frame 83. The moving rod 93 is inclined near the inclined ring 91. The collection assembly 9 also includes a gathering membrane 92 fixedly connected inside the extrusion frame 83. The moving rod 93 extends into the interior of the extrusion frame 83 and is fixedly connected to an extrusion arc plate 94 near the gathering membrane 92. The extrusion arc plate 94 is inclined. The end of the moving rod 93 rotates to reduce friction of the ball bearings.

[0068] By adopting the above technical solution, since the extrusion arc plate 94 is set at an angle, the inner side of the shrinking membrane 92 squeezed by the extrusion arc plate 94 is in an inclined state, which facilitates the guidance of the liquid entering this place to the rotating rod 11. When the liquid starts to fall from the top position of the elastic membrane 12, it needs to go through an acceleration stage. During this stage, the liquid is in full contact with the surface of the prism and gains kinetic energy through viscosity or friction. This avoids the liquid being unable to be thrown out due to insufficient initial speed, and ensures that the liquid reaches a sufficient speed before being thrown out. This helps to improve the liquid's adhesion to the inner wall of the finned tube 4 and thus improve the uniformity of heat exchange.

[0069] When it is necessary to reduce the thickness of the liquid film, the moving frame 71 moves upward with the small rod 81, the rotating ring 82 and the extrusion frame 83, and the extrusion frame 83 moves upward with the moving rod 93. At this time, the end of the moving rod 93 is limited by the inclined part of the inclined ring 91. The inclined ring 91 and the extrusion frame 83 extrude the shrinking membrane 92, which facilitates the shrinking membrane 92 to approach the rotating rod 11. This further facilitates the liquid to fall from the top of the elastic membrane 12 near the rotating rod 11, thereby improving the liquid adhesion to the inner wall of the finned tube 4 and improving the heat exchange uniformity.

[0070] When it is necessary to increase the thickness of the liquid film, the moving frame 71 moves downward with the small rod 81, the rotating ring 82 and the extrusion frame 83. At this time, under the action of the elastic force of the shrinking membrane 92 itself, the extrusion frame 83 moves with the tilting ring 91 to a position away from the rotating rod 11, ensuring that the increased liquid can smoothly reach the position of the elastic membrane 12.

[0071] It should be noted that the elastic membrane 12, elastic membrane 52, and gathering membrane 92 are all made of high-temperature resistant and elastic rubber material.

[0072] An energy-saving finned heat exchanger method includes the following steps:

[0073] S1. Liquid inlet: A liquid inlet pipe is fixedly inserted into the outer shell 1 above the top plate 2. A liquid outlet pipe for discharging the liquid after heat exchange is fixedly inserted into the bottom of the outer shell 1. A steam inlet pipe and a steam outlet pipe are fixedly inserted between the top plate 2 and the bottom plate 3 of the outer shell 1. The steam inlet pipe is located below the steam outlet pipe. The beverage that needs to be heated and sterilized enters from the liquid inlet pipe. Then the liquid enters multiple finned tubes 4 for softening and heating. Then it enters the bottom of the bottom plate 3 from the finned tubes 4 and is discharged from the liquid outlet pipe.

[0074] S2, heat exchange: high-temperature steam is injected from the steam inlet pipe located below. The high-temperature steam is used to exchange heat with the liquid beverage inside the finned tube 4. The gas after heat exchange is discharged from the steam outlet pipe.

[0075] Working principle: The output shaft of motor 61 rotates, which causes the drive gear 63 to rotate. Under the meshing action of drive gear 63 and driven gear 64, driven gear 64 rotates. Driven gear 64 drives rotating rod 11 to rotate. When rotating rod 11 rotates, elastic membrane 12 and rotating frame 10 rotate accordingly. When liquid enters from the top of finned tube 4 and falls above elastic membrane 12, the rotation of elastic membrane 12 and rotating frame 10 causes the liquid to be thrown out to the inner wall of finned tube 4 by centrifugal force. This allows the liquid and liquid film to flow downward along the inner wall of finned tube 4, thereby reducing uneven heat exchange of liquid beverages.

[0076] When it is necessary to increase the thickness of the liquid film formed by the falling liquid, the output shaft of the electric telescopic rod 77 extends, causing the lifting plate 14 to move downward and squeeze the ball 78. At this time, the ball 78 moves downward with the motion frame 71, and the spring 74 is compressed, causing the squeezing plate 72 to move downward. Under the elastic force of the elastic membrane 12, the elastic membrane 12 moves towards the center, and multiple push plates 76 also move towards the center, thus increasing the distance between the elastic membrane 12 and the inner side of the finned tube 4, thereby increasing the thickness of the liquid film. When it is necessary to decrease the thickness of the liquid film formed by the falling liquid, the output shaft of the electric telescopic rod 77 retracts, causing the lifting plate 14 to move upward. Under the elastic force of the spring 74, the ball 78 moves upward with the motion frame 71, thus causing the squeezing plate 72 to move upward. At this time, multiple push plates 76 move outward, squeezing and expanding the elastic membrane 12, thus reducing the distance between the elastic membrane 12 and the inner side of the finned tube 4, thereby reducing the thickness of the liquid film.

[0077] When the thickness of the liquid film needs to be reduced, the upward movement of the motion frame 71 causes the small rod 81 to move upward with the rotating ring 82, and the rotating ring 82 to move upward with the extrusion frame 83. At this time, the extrusion frame 83 extrudes multiple rotating bars 51, causing the rotating bars 51 to deflect the elastic membrane 52 upward. At this time, the area of ​​the space between the elastic membrane 52 and the rotating rod 11 is reduced, thereby reducing the flow rate of liquid to the elastic membrane 12. When the thickness of the liquid film needs to be increased, the downward movement of the motion frame 71 causes the small rod 81 to move downward with the rotating ring 82, and the rotating ring 82 to move downward with the extrusion frame 83. At this time, under the action of the rotating bars 51 and the liquid pressure, the rotating bars 51 deflect the elastic membrane 52 downward. At this time, the area of ​​the space between the elastic membrane 52 and the rotating rod 11 is increased, thereby increasing the flow rate of liquid to the elastic membrane 12.

[0078] Because the extrusion arc plate 94 is set at an angle, the inner side of the shrinking membrane 92 squeezed by the extrusion arc plate 94 is in an inclined state, which facilitates the guidance of the liquid entering this place to the rotating rod 11. When the liquid starts to fall from the top position of the elastic membrane 12, it needs to go through an acceleration stage. During this stage, the liquid is in full contact with the surface of the prism and gains kinetic energy through viscous force or friction. This avoids the liquid being unable to be thrown out due to insufficient initial speed, and ensures that the liquid reaches a sufficient speed before being thrown out. This helps to improve the liquid's adhesion to the inner wall of the finned tube 4 and thus improve the uniformity of heat exchange.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy-saving finned heat exchanger, comprising a shell (1), a top plate (2) and a bottom plate (3) disposed inside the shell (1), finned tubes (4) for heat exchange being fixedly inserted in a ring array between the top plate (2) and the bottom plate (3), a rotating frame (10) disposed inside the finned tubes (4), a rotating rod (11) disposed above the rotating frame (10), and an elastic membrane (12) disposed between the bottom of the rotating rod (11) and the rotating frame (10), characterized in that, The heat exchanger also includes: The drive assembly (6) is positioned above the finned tube (4). The drive assembly (6) is used to drive the rotating rod (11), the rotating frame (10) and the elastic membrane (12) to rotate, thereby generating centrifugal force to throw the liquid toward the inner wall of the finned tube (4). Adjustment component (7) is used to adjust the distance between the elastic membrane (12) and the inner wall of the finned tube (4), thereby adjusting the thickness of the liquid film; The limiting component (5) is disposed inside the finned tube (4) to block some liquid from entering the upper position of the elastic membrane (12) and limit the flow rate of liquid entering the upper position of the elastic membrane (12). The limiting component (5) includes a rotating bar (51) rotatably connected to the top of the inner side of the finned tube (4) in an annular array. An elastic membrane (52) is fixedly connected between the top of the rotating bar (51) and the inner wall of the finned tube (4).

2. The energy-saving finned heat exchanger according to claim 1, characterized in that: The inner wall of the outer shell (1) is fixed with a partition (13) above the top plate (2). The inner wall of the outer shell (1) is slidably connected with a lifting plate (14) above the partition (13). The top of the outer wall of the rotating rod (11) is rotatably connected to the partition (13). The drive assembly (6) includes a motor (61) fixedly connected to the bottom of the lifting plate (14). The output shaft of the motor (61) is slidably connected to a slide rod (62). The bottom of the slide rod (62) rotates with the partition (13). The bottom of the slide rod (62) is fixedly connected to a drive gear (63). The drive assembly (6) also includes a passive gear (64) fixedly connected to the top outer wall of the rotating rod (11). Multiple passive gears (64) mesh with the drive gear (63).

3. The energy-saving finned heat exchanger according to claim 2, characterized in that: A round rod (15) is fixedly connected between the rotating frame (10) and the rotating rod (11). The adjusting assembly (7) includes a motion frame (71) slidably connected inside the rotating rod (11). The bottom of the motion frame (71) extends into the interior of the elastic membrane (12) and is fixedly connected to a pressing disc (72). The pressing disc (72) is slidably connected to the round rod (15). The adjusting assembly (7) also includes a ring (73) fixedly connected inside the rotating rod (11). A spring (74) is fixedly connected between the ring (73) and the motion frame (71). The adjusting assembly (7) also includes a slide (75) slidably connected to the top of the rotating frame (10) in an annular array. A push plate (76) is fixedly connected to the outer wall of the slide (75). The outer side of the push plate (76) is fixedly connected to the elastic membrane (12).

4. The energy-saving finned heat exchanger according to claim 3, characterized in that: The push plate (76) is inclined near the extrusion plate (72), and the extrusion plate (72) is inclined near the push plate (76).

5. An energy-saving finned heat exchanger according to claim 4, characterized in that: The adjustment assembly (7) also includes an electric telescopic rod (77) fixedly connected to the top of the inner side of the housing (1). The output shaft of the electric telescopic rod (77) is fixedly connected to the lifting plate (14), and a ball (78) is rotatably connected to the top of the motion frame (71).

6. An energy-saving finned heat exchanger according to claim 3, characterized in that, The heat exchanger also includes: Adjustment component (8) is located at the bottom of rotating bar (51). Adjustment component (8) is used to adjust the flow rate of liquid falling above elastic membrane (12). Adjustment component (8) includes small rods (81) fixedly connected to both sides of the outer wall of slide (75). The side of small rod (81) away from slide (75) passes through rotating rod (11) and is fixedly connected to rotating ring (82). The top of rotating ring (82) is rotatably connected to extrusion frame (83). The top of extrusion frame (83) near rotating bar (51) is arc-shaped.

7. An energy-saving finned heat exchanger according to claim 6, characterized in that: A slot (16) is provided near the small rod (81) of the rotating rod (11). A flexible membrane (17) is fixedly connected inside the slot (16). The interior of the flexible membrane (17) is fixedly connected to the small rod (81).

8. An energy-saving finned heat exchanger according to claim 6, characterized in that, The heat exchanger also includes: The gathering assembly (9) is positioned above the rotating ring (82). The gathering assembly (9) includes an inclined ring (91) fixedly connected inside the finned tube (4). The inclined ring (91) is inclined inside. The gathering assembly (9) also includes a moving rod (93) slidably connected inside the extrusion frame (83). The moving rod (93) is inclined near the inclined ring (91). The gathering assembly (9) also includes a gathering membrane (92) fixedly connected inside the extrusion frame (83). The moving rod (93) extends into the extrusion frame (83) and is fixedly connected to an extrusion arc plate (94) near the gathering membrane (92).

9. An energy-saving finned heat exchanger according to claim 8, characterized in that: The extrusion arc plate (94) is set at an angle.

10. An energy-saving finned heat exchange method, characterized in that: This method is applicable to the energy-saving finned heat exchanger according to any one of claims 1-9, and includes the following steps: S1, Liquid inlet: Add the liquid that needs to be heated into the interior of the outer shell (1) above the top plate (2), and the liquid flows into the interior of the finned tube (4); S2, heat exchange: Steam is added to the interior of the shell (1) between the top plate (2) and the bottom plate (3) to exchange heat with the liquid in the finned tube (4).

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