Energy-saving finned heat exchanger and using method thereof

Abstract

The invention relates to the technical field of heat exchange, and particularly discloses an energy-saving finned heat exchanger which comprises a shell, a top plate and a bottom plate are arranged in the shell, finned tubes used for heat exchange are fixedly inserted between the top plate and the bottom plate in an annular array mode, rotating frames are arranged in the finned tubes, rotating rods are arranged above the rotating frames, and the rotating rods are arranged above the rotating frames. An elastic film is arranged between the bottom of the rotating rod and the rotating frame, the heat exchanger further comprises a driving assembly arranged above the finned tube, the driving assembly is used for driving the rotating rod, the rotating frame and the elastic film to rotate and used for generating centrifugal force to throw liquid to the inner wall of the finned tube, and the adjusting assembly is used for adjusting the distance between the elastic film and the inner wall of the finned tube. Through cooperation of the structure, the situation that liquid is accumulated above the elastic film can be reduced, so that the influence on the effect that the elastic film throws out the liquid through centrifugal force is reduced, the effect that the liquid forms a liquid film to be attached to the inner wall of the finned tube is improved, and the heat exchange uniformity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and in particular to an energy-saving fin-type heat exchanger and a method of using the same. Background Art

[0002] Fin-tube heat exchanger is a type of fin-type heat exchanger. It is a high-efficiency heat exchange equipment that enhances heat transfer by adding fins to the surface of the base tube. It is widely used in food processing, industry, HVAC, refrigeration and other fields. It is a common intelligent heat exchange equipment. Fin-tube heat exchanger can be used when heating and sterilizing beverage products.

[0003] When a traditional tubular exchanger heats and sterilizes beverages, the liquid near the inner wall of the pipe can usually absorb more heat and achieve a better heat exchange effect. However, the heat exchange efficiency of the liquid in the middle of the pipe is poor, which affects the heating and sterilization effect of the beverage. In order to solve the problem of uneven heat exchange in the middle of the heat exchange pipe and near the inner wall of the pipe, the "A Propane Dehydrogenation Device Waste Heat Recovery and Power Generation System" with publication number "CN119042601A" contains a technical solution that includes a heat exchange device. Through the action of a rotating component, the fixed frame rotates, thereby partially rotating the elastic membrane, which can provide centrifugal force for the liquid working medium falling on the elastic membrane. When the liquid working medium is thrown out, the working medium is close to the inner wall of the heat exchange pipe and descends in the state of a liquid film, so that the liquid remains close to the inner wall of the heat exchange pipe and flows downward, avoiding poor heat exchange of the liquid in the middle of the heat exchange pipe.

[0004] However, in the above scheme, since liquid is continuously added to the heat exchange equipment, when the liquid enters the heat exchange pipe, it is easy for a large amount of liquid to accumulate above the fixed frame and the elastic membrane. The accumulation of more liquid causes the mass of the liquid above the point where the liquid is thrown out to increase, and the inertia is enhanced, so that a greater centrifugal force is required to throw the liquid out, affecting the effect of the liquid sticking to the inner wall of the heat exchange pipe when it is thrown out, thereby affecting the uniformity of heat exchange. Summary of the Invention

[0005] The object of the present invention is to provide an energy-saving fin-type heat exchanger and a method for using the same, which can reduce the accumulation of liquid above the elastic membrane, thereby reducing the effect of the elastic membrane on the liquid being thrown out by centrifugal force, thereby improving the effect of the liquid forming a liquid film that adheres to the inner wall of the fin tube, thereby improving the uniformity of heat exchange, and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving fin-type heat exchanger, comprising a housing, a top plate and a bottom plate disposed within the housing, fin tubes for heat exchange being fixedly connected in an annular array between the top plate and the bottom plate, a rotating rack disposed within the fin tubes, a rotating rod disposed above the rotating rack, and an elastic membrane disposed between the bottom of the rotating rod and the rotating rack, characterized in that the heat exchanger further comprises: A driving assembly is disposed above the fin tube, and is used to drive the rotating rod, the rotating frame, and the elastic membrane to rotate, so as to generate centrifugal force to throw the liquid toward the inner wall of the fin tube; An adjusting component is used to adjust the distance between the elastic membrane and the inner wall of the fin tube, thereby adjusting the thickness of the liquid film; The limiting component is arranged inside the fin tube and is used to block part of the liquid from entering the position above the elastic membrane, thereby limiting the flow of the liquid entering the position above the elastic membrane. The limiting component includes a circular array of rotating bars rotatably connected to the top of the inner side of the fin tube, and an elastic membrane is fixedly connected between the top of the rotating bar and the inner wall of the fin tube.

[0007] Preferably, a partition is fixed on the inner wall of the shell above the top plate, a lifting plate is slidably provided on the inner wall of the shell above the partition, the top of the outer wall of the rotating rod is rotatably connected to the partition, the driving assembly includes a motor fixedly connected to the bottom of the lifting plate, the output shaft of the motor is slidably connected to the sliding rod, the bottom of the sliding rod rotates with the partition, the bottom of the sliding rod is fixedly connected to a driving gear, the driving assembly also includes a passive gear fixedly connected to the outer wall of the top of the rotating rod, and multiple passive gears are meshed with the driving gear.

[0008] Preferably, a round rod is fixedly connected between the rotating frame and the rotating rod, the adjusting component includes a moving frame slidably connected to the inside of the rotating rod, the bottom of the moving frame extends into the interior of the elastic membrane and is fixedly connected to an extrusion disk, the extrusion disk is slidably connected to the round rod, the adjusting component also includes a circular ring fixedly connected to the inside of the rotating rod, a spring is fixedly connected between the circular ring and the moving frame, the adjusting component also includes a slide slidably connected to the top of the rotating frame in an annular array, the outer wall of the slide is fixedly connected to a push plate, and the outer side of the push plate is fixedly connected to the elastic membrane.

[0009] Preferably, the portion of the propulsion plate close to the extrusion disk and the portion of the extrusion disk close to the propulsion plate are both arranged obliquely.

[0010] Preferably, the adjustment assembly further comprises an electric telescopic rod fixedly connected to the top inner side of the shell, the output shaft of the electric telescopic rod is fixedly connected to the lifting plate, and the top of the motion frame is rotatably connected with a ball.

[0011] Preferably, the heat exchanger further comprises: The adjustment component is arranged at the bottom of the rotating bar. The adjustment component is used to adjust the flow rate of the liquid falling on the elastic membrane. The adjustment component includes a small rod fixedly connected to both sides of the outer wall of the slide. The side of the small rod away from the slide passes through the rotating rod and is fixedly connected to a rotating ring. The top of the rotating ring is rotatably connected to an extrusion frame. The top of the extrusion frame is arc-shaped near the rotating bar.

[0012] Preferably, a hollow groove is provided on the rotating rod near the small rod, a flexible membrane is fixedly connected inside the hollow groove, and the inside of the flexible membrane is fixedly connected to the small rod.

[0013] Preferably, the heat exchanger further comprises: The gathering assembly is arranged above the rotating ring. The gathering assembly includes an inclined ring fixedly connected to the inside of the fin tube, and the inner side of the inclined ring is inclined. The gathering assembly also includes a moving rod slidably connected to the inside of the extrusion frame, and the moving rod is inclined near the inclined ring. The gathering assembly also includes a gathering film fixedly connected to the inside of the extrusion frame, and the moving rod extends into the interior of the extrusion frame and is fixedly connected to an extrusion arc plate near the gathering film.

[0014] Preferably, the extruded arc plate is arranged at an angle.

[0015] An energy-saving fin-type heat exchange method comprises the following steps: S1, liquid inlet, add the liquid that needs to be heat exchanged into the shell above the top plate, and the liquid flows into the inside of the fin tube; S2. Heat exchange: steam is added between the top plate and the bottom plate inside the shell to exchange heat with the liquid in the fin tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the action of the limiting component, the area of ​​the space formed between the elastic membrane and the rotating rod is smaller than the area of ​​the space formed between the bottom of the elastic membrane and the inner side of the fin tube. The elastic membrane and the rotating bar block the liquid falling from the top of the fin tube, reducing the accumulation of liquid above the elastic membrane, thereby reducing the effect of the elastic membrane on the liquid being thrown out by centrifugal force, thereby improving the effect of the liquid forming a liquid film to adhere to the inner wall of the fin tube, thereby improving the uniformity of heat exchange; 2. The design of the rotating strip and elastic membrane can also limit the space for the liquid to flow downward, which is conducive to the liquid flowing evenly to the inside of each fin tube; 3. By adjusting the function of the component, 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 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 away from the inside of the fin tube, thereby affecting the thickness of the liquid film; 4. Through the function of the gathering component, the liquid entering this area is conveniently guided to the rotating rod, which is beneficial for the liquid to go through an acceleration stage when it starts to fall from the top of the elastic membrane. During this stage, the liquid is in full contact with the surface of the prism and obtains kinetic energy through viscosity or friction, avoiding the lack of throwing out due to insufficient initial speed, ensuring that the liquid reaches a sufficient speed before being thrown out, thereby improving the effect of the liquid falling against the inner wall of the finned tube, thereby improving the uniformity of heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific 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 any creative work.

[0018] Figure 1 It is an overall structural view of the present invention; Figure 2 It is a schematic diagram of a half-section structure of the present invention; Figure 3 A schematic diagram of a half-section structure of the top portion of the housing of the present invention; Figure 4 It is a schematic diagram of a partial top view of the structure of the motor of the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of the separator of the present invention; Figure 6 This is a schematic diagram of a half-section structure of the top position of the fin tube of the present invention; Figure 7 It is a partial upward cross-sectional structural schematic diagram of the fin tube of the present invention; Figure 8 It is a schematic diagram of a half-section structure of the rotating rod of the present invention; Figure 9 is a schematic diagram of a top cross-sectional structure of the elastic membrane of the present invention; Figure 10 Schematic diagram of a half-section structure of the inclined ring of the present invention; Figure 11 It is a bottom view structural diagram of the rotating ring of the present invention; Figure 12 It is a schematic diagram of the partial bottom view of the structure of the extruded arc plate of the present invention.

[0019] Description of reference numerals: 1. Shell; 2. Top plate; 3. Bottom plate; 4. Fin tube; 5. Limiting assembly; 51. Rotating bar; 52. Elastic membrane; 6. Driving assembly; 61. Motor; 62. Slide rod; 63. Active gear; 64. Passive gear; 7. Adjusting assembly; 71. Moving frame; 72. Extrusion disk; 73. Ring; 74. Spring; 75. Slide; 76. Push plate; 77. Electric telescopic rod; 78. Ball; 8. Adjusting assembly; 81. Small rod; 82. Rotating ring; 83. Extrusion frame; 9. Gathering assembly; 91. Tilting 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. Empty slot; 17. Flexible membrane. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 12 The present invention provides a technical solution: an energy-saving fin-type heat exchanger, comprising an outer shell 1 made of a multi-section shell, and the multi-section shells are fixed by flanges. The interior of the outer shell 1 is provided with a top plate 2 and a bottom plate 3, the top plate 2 is located above the bottom plate 3, and a ring array of fin tubes 4 for heat exchange is fixedly inserted between the top plate 2 and the bottom plate 3. Fins are fixed on the outside of the fin tubes 4 to increase the heat exchange area between the medium inside the fin tubes 4 and the outside of the fin tubes 4.

[0022] The shell 1 is located above the top plate 2 and is fixedly connected to a liquid inlet pipe. The bottom of the shell 1 is fixedly connected to a liquid outlet pipe for discharging the liquid after heat exchange. The shell 1 is located between the top plate 2 and the bottom plate 3 and is fixedly connected to a steam inlet pipe and a steam outlet pipe. The steam inlet pipe is located below the steam outlet pipe. When heat exchange is performed, the beverage that needs to be heated and sterilized enters from the liquid inlet pipe, and then the liquid enters multiple fin tubes 4 to be softened and heated, and then enters the bottom of the bottom plate 3 from the fin tubes 4 and is discharged from the liquid outlet pipe.

[0023] High-temperature steam is injected from the steam inlet pipe located below, and the high-temperature steam is used to exchange heat with the liquid beverage in the finned tube 4. The gas after heat exchange is discharged from the steam outlet pipe.

[0024] When the low-temperature beverage enters the finned tube 4, it exchanges heat with the high-temperature steam to achieve high-temperature sterilization.

[0025] It should be noted that the tops of the plurality of fin tubes 4 are higher than the top of the top plate 2 , and the tops of the plurality of fin tubes 4 are flush.

[0026] The interior of the finned tube 4 is provided with a rotating frame 10, and a rotating rod 11 is provided above the rotating frame 10. An elastic membrane 12 is provided between the bottom of the rotating rod 11 and the rotating frame 10. The heat exchanger also includes a driving assembly 6 arranged above the finned tube 4, and the driving assembly 6 is used to drive the rotating rod 11, the rotating frame 10 and the elastic membrane 12 to rotate, so as to generate centrifugal force to throw the liquid toward the inner wall of the finned tube 4. The inner wall of the outer shell 1 is located above the top plate 2 and is fixed with a partition 13. The inner wall of the outer shell 1 is located above the partition 13 and is slidably provided with a lifting plate 14. The top of the outer wall of the rotating rod 11 is rotatably connected to the partition 13. The driving assembly 6 includes a motor 61 fixedly connected to the bottom of the lifting plate 14, and the output shaft of the motor 61 is slidably connected to the sliding rod 62. The bottom of the sliding rod 62 rotates with the partition 13, and the bottom of the sliding rod 62 is fixedly connected to the driving gear 63. The driving assembly 6 also includes a passive gear 64 fixedly connected to the outer wall of the top of the rotating rod 11, and multiple passive gears 64 are meshed with the active gear 63.

[0027] By adopting the above technical solution, when heat exchange is performed, the output shaft of the motor 61 is rotated, so that the driving gear 63 can be rotated. Under the action of the engagement of the driving gear 63 and the driven gear 64, the driven gear 64 can be rotated, so that the driven gear 64 can rotate with the rotating rod 11. When the rotating rod 11 rotates, the elastic membrane 12 and the rotating frame 10 can be rotated accordingly. In this way, when the liquid enters from the top of the fin tube 4 and falls on the top of the elastic membrane 12, as the elastic membrane 12 and the rotating frame 10 rotate, the liquid can be thrown out to the inner wall of the fin tube 4 by centrifugal force, which is beneficial for the liquid and the liquid film to flow downward along the inner wall of the fin tube 4, thereby helping to reduce the uneven heat exchange of the liquid beverage.

[0028] The heat exchanger also includes an adjustment component 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 component 7 includes a moving frame 71 slidably connected to the inside of 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 squeeze disk 72. The squeeze disk 72 is slidably connected to the round rod 15. The adjustment component 7 also includes a ring 73 fixedly connected to the inside of the rotating rod 11. The ring 73 is fixedly connected to the moving frame 71. 1 is fixedly connected with a spring 74, the adjustment component 7 also includes a slide 75 slidably connected to the top of the rotating frame 10 in an annular array, the outer wall of the slide 75 is fixedly connected with a push plate 76, the outer side of the push plate 76 is fixedly connected to the elastic membrane 12, the push plate 76 is close to the extrusion disk 72 and the extrusion disk 72 is close to the push plate 76. The adjustment component 7 also includes an electric telescopic rod 77 fixedly connected to the top of the inner side of the shell 1, the output shaft of the electric telescopic rod 77 is fixedly connected to the lifting plate 14, and the top of the moving frame 71 is rotatably connected with a ball 78.

[0029] The design of the sliding rod 62 being rotatably connected to the output shaft of the motor 61 ensures that the sliding rod 62 and the motor 61 do not affect the up and down movement of the lifting plate 14 .

[0030] It should be noted that the ball 78 is used to reduce the friction between the moving 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 .

[0031] A thermometer for temperature monitoring is provided at the bottom of the housing 1. When the beverage temperature after heat exchange is detected to be higher than the set value, the thickness of the liquid film needs to be controlled to increase. Conversely, when the beverage temperature after heat exchange is detected to be lower than the set value, the thickness of the liquid film needs to be controlled to decrease. The thermometer transmits the temperature signal to the external controller, and the controller controls the output shaft of the electric telescopic rod 77 to extend and retract. This design is conducive to intelligent control of the temperature of the liquid.

[0032] 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 is extended, so that the lifting plate 14 moves downward to squeeze the ball 78. At this time, the ball 78 moves downward with the moving frame 71. At this time, the spring 74 is compressed, so that the extrusion plate 72 moves downward. At this time, under the elastic force of the elastic membrane 12, the elastic membrane 12 moves toward the middle, and multiple push plates 76 move toward the middle, thereby increasing the distance between the elastic membrane 12 and the inner side of the fin tube 4, thereby increasing the thickness of the liquid film.

[0033] 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 is contracted, so that the lifting plate 14 moves upward. Under the elastic force of the spring 74, the ball 78 moves upward with the moving frame 71, thereby causing the extrusion plate 72 to move upward. At this time, multiple propulsion plates 76 move outward, and the propulsion plates 76 squeeze and stretch the elastic membrane 12, which can reduce the distance between the elastic membrane 12 and the inner side of the fin tube 4, thereby reducing the thickness of the liquid film.

[0034] It should be noted that the elastic force of the spring 74 is much greater than the elastic force of the elastic membrane 12 .

[0035] The heat exchanger also includes a limiting component 5 arranged inside the fin tube 4, which is used to block part of the liquid from entering the position above the elastic membrane 12 and limit the flow of liquid entering the position above the elastic membrane 12. The limiting component 5 includes a circular array of rotating bars 51 rotatably connected to the top inner side of the fin tube 4, and an elastic membrane 52 is fixedly connected between the top of the rotating bar 51 and the inner wall of the fin tube 4.

[0036] It should be noted that a plurality of rotating bars 51 are provided, and the rotating bars 51 are arranged tilted.

[0037] By adopting the above technical solution, the area of ​​the space formed between the elastic membrane 52 and the rotating rod 11 is smaller, which is smaller than the area of ​​the space formed between the bottom of the elastic membrane 12 and the inner side of the fin tube 4. The elastic membrane 52 and the rotating bar 51 block the liquid falling from the top of the fin tube 4, reducing the accumulation of liquid above the elastic membrane 12, thereby reducing the effect of the elastic membrane 12 on throwing the liquid out through centrifugal force, thereby improving the effect of the liquid forming a liquid film to fit the inner wall of the fin tube 4, thereby improving the uniformity of heat exchange.

[0038] It should be noted that the liquid that needs heat exchange continuously enters the top of the top plate 2. When in use, the liquid level is higher than the top of the fin tube 4. The design of the rotating bar 51 and the elastic membrane 52 can limit the space for the liquid to flow downward, which is conducive to the liquid flowing evenly to the inside of each fin tube 4.

[0039] The heat exchanger also includes an adjustment component 8 arranged at the bottom of the rotating bar 51. The adjustment component 8 is used to adjust the flow rate of the liquid falling above the elastic membrane 12. The adjustment component 8 includes a small rod 81 fixedly connected to both sides of the outer wall of the slide 75. The side of the small rod 81 away from the slide 75 passes through the rotating rod 11 and is fixedly connected to a rotating ring 82. The top of the rotating ring 82 is rotatably connected to an extrusion frame 83. The top of the extrusion frame 83 is arc-shaped near the rotating bar 51. The rotating rod 11 is provided with an empty groove 16 near the small rod 81. The inside of the empty groove 16 is fixedly connected to a flexible membrane 17, and the inside of the flexible membrane 17 is fixedly connected to the small rod 81.

[0040] It should be noted that the design of the flexible membrane 17 ensures that the interior of the rotating rod 11 is sealed while not affecting the up and down movement of the small rod 81 .

[0041] By adopting the above technical solution, when the thickness of the liquid film needs to be reduced, the moving frame 71 moves upward, causing the small rod 81 to move upward with the rotating ring 82, and the rotating ring 82 to move upward with the squeezing frame 83. At this time, the squeezing frame 83 squeezes the multiple rotating bars 51, causing the rotating bars 51 to deflect upward with the elastic membrane 52. 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 the liquid flowing to the elastic membrane 12.

[0042] When the thickness of the liquid film needs to be increased, the moving frame 71 moves downward, causing 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 deflects the elastic film 52 downward. At this time, the area of ​​the space between the elastic film 52 and the rotating rod 11 increases, thereby increasing the flow rate of the liquid flowing to the elastic membrane 12.

[0043] Such a design can adjust the distance between the elastic membrane 52 and the rotating rod 11 according to the required thickness of the liquid film, and correspondingly adjust the flow rate of the liquid flowing down from the elastic membrane 52 and the rotating rod 11, thereby controlling the amount of liquid entering the elastic membrane 12, and avoiding insufficient liquid falling to the elastic membrane 52 when the elastic membrane 52 is away from the interior of the fin tube 4, thereby affecting the thickness of the liquid film.

[0044] Embodiment 2: The technical solution of this embodiment is different from that of embodiment 1 in that: Figures 1 to 2 and Figures 5 to 12 The heat exchanger also includes a gathering component 9 arranged above the rotating ring 82, the gathering component 9 includes an inclined ring 91 fixedly connected to the inside of the fin tube 4, the inner side of the inclined ring 91 is inclined, the gathering component 9 also includes a moving rod 93 slidably connected to the inside of the extrusion frame 83, the moving rod 93 is inclined near the inclined ring 91, the gathering component 9 also includes a gathering film 92 fixedly connected to the inside of the extrusion frame 83, the moving rod 93 extends into the interior of the extrusion frame 83, and is fixedly connected to the gathering film 92 with an extrusion arc plate 94, the extrusion arc plate 94 is inclined, and the rotation of the end of the moving rod 93 is conducive to reducing friction of the ball.

[0045] By adopting the above technical solution, since the extrusion arc plate 94 is set at an angle, the inner side of the gathering membrane 92 squeezed by the extrusion arc plate 94 is in an inclined state, which is convenient for guiding the liquid entering there to be close to the rotating rod 11, and is beneficial for the liquid to go through an acceleration stage when it starts to fall from the top position of the elastic membrane 12. At this stage, the liquid is in full contact with the surface of the prism and obtains kinetic energy through viscosity or friction, avoiding the lack of ability to be thrown out due to insufficient initial speed, and ensuring that the liquid reaches a sufficient speed before being thrown out, thereby facilitating improving the effect of the liquid falling against the inner wall of the fin tube 4, thereby improving the uniformity of heat exchange.

[0046] When the thickness of the liquid film needs to be reduced, the moving frame 71 moves upward with the small rod 81, the rotating ring 82 and the squeezing frame 83, and the squeezing frame 83 moves upward with the moving rod 93. At this time, the end of the moving rod 93 is limited by the inner inclined part of the inclined ring 91, and the inclined ring 91 brings the squeezing frame 83 to squeeze the gathering film 92, thereby facilitating the gathering film 92 to approach the rotating rod 11, and further facilitating the liquid to start falling from the top of the elastic membrane 12 near the rotating rod 11, thereby facilitating the liquid to fall against the inner wall of the fin tube 4 and improving the uniformity of heat exchange.

[0047] When the thickness of the liquid film needs to be increased, the moving frame 71 moves downward with the small rod 81, the rotating ring 82 and the squeezing frame 83. At this time, under the action of the elastic force of the gathering film 92 itself, the squeezing frame 83 moves with the inclined 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.

[0048] It should be noted that the elastic membrane 12 , the elastic membrane 52 and the gathering membrane 92 are all made of a high-temperature-resistant and elastic rubber material.

[0049] An energy-saving fin-type heat exchange method comprises the following steps: S1. Liquid inlet: The shell 1 is located above the top plate 2 and is fixedly connected to a liquid inlet pipe. The bottom of the shell 1 is fixedly connected to a liquid outlet pipe for discharging the liquid after heat exchange. The shell 1 is located between the top plate 2 and the bottom plate 3 and is fixedly connected to a steam inlet pipe and a steam outlet pipe. The steam inlet pipe is located below the steam outlet pipe. The beverage to be heated and sterilized enters through the liquid inlet pipe, and then enters the multiple fin tubes 4 for softening. Then, the liquid enters the bottom of the bottom plate 3 from the fin tubes 4 and is discharged from the liquid outlet pipe. S2, heat exchange, high temperature steam is injected from the steam inlet pipe at the bottom, the high temperature steam is used to exchange heat with the liquid beverage in the finned tube 4, and the gas after heat exchange is discharged from the steam outlet pipe.

[0050] Working principle: By rotating the output shaft of the motor 61, the driving gear 63 can be rotated, and under the action of the engagement of the driving gear 63 and the driven gear 64, the driven gear 64 can be rotated, so that the driven gear 64 can rotate with the rotating rod 11. When the rotating rod 11 rotates, the elastic membrane 12 and the rotating frame 10 can be rotated accordingly. In this way, when the liquid enters from the top of the fin tube 4 and falls on the top of the elastic membrane 12, as the elastic membrane 12 and the rotating frame 10 rotate, the liquid can be thrown out to the inner wall of the fin tube 4 by centrifugal force, which is conducive to the liquid and the liquid film flowing downward along the inner wall of the fin tube 4, thereby helping to reduce the uneven heat exchange of the liquid beverage.

[0051] 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 is extended, so that the lifting plate 14 moves downward to squeeze the ball 78. At this time, the ball 78 moves downward with the moving frame 71. At this time, the spring 74 is compressed, so that the squeezing plate 72 moves downward. At this time, under the elastic force of the elastic membrane 12, the elastic membrane 12 moves closer to the middle, and multiple pusher plates 76 move closer to the middle, thus increasing the distance between the elastic membrane 12 and the inner side of the fin tube 4, thereby increasing the thickness of the liquid film. 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 is contracted, so that the lifting plate 14 moves upward. Under the elastic force of the spring 74, the ball 78 moves upward with the moving frame 71, thereby causing the squeezing plate 72 to move upward. At this time, multiple pusher plates 76 move outward, and the pusher plates 76 squeeze and stretch the elastic membrane 12, thereby reducing the distance between the elastic membrane 12 and the inner side of the fin tube 4, thereby reducing the thickness of the liquid film.

[0052] When the thickness of the liquid film needs to be reduced, the moving frame 71 moves upward, causing the small rod 81 to move upward with the rotating ring 82, and the rotating ring 82 to move upward with the squeezing frame 83. At this time, the squeezing frame 83 squeezes the multiple rotating bars 51, causing the rotating bars 51 to deflect upward with the elastic membrane 52. 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 the liquid flowing to the elastic membrane 12. When the thickness of the liquid film needs to be increased, the moving frame 71 moves downward, causing the small rod 81 to move downward with the rotating ring 82, and the rotating ring 82 to move downward with the squeezing frame 83. At this time, under the action of the rotating bar 51 and the liquid pressure, the rotating bar 51 deflects downward with the elastic membrane 52. 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 the liquid flowing to the elastic membrane 12.

[0053] Since the extrusion arc plate 94 is set at an angle, the inner side of the gathering membrane 92 squeezed by the extrusion arc plate 94 is in an inclined state, which is convenient for guiding the liquid entering there to be close to the rotating rod 11, and is beneficial for the liquid to go through an acceleration stage when it starts to fall from the top position of the elastic membrane 12. At this stage, the liquid is in full contact with the surface of the prism and obtains kinetic energy through viscosity or friction, avoiding the lack of ability to be thrown out due to insufficient initial speed, and ensuring that the liquid reaches a sufficient speed before being thrown out, thereby facilitating improving the effect of the liquid falling against the inner wall of the fin tube 4, thereby improving the uniformity of heat exchange.

[0054] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 fin-type heat exchanger, comprising a shell (1), wherein a top plate (2) and a bottom plate (3) are arranged inside the shell (1), fin tubes (4) for heat exchange are fixedly connected in an annular array between the top plate (2) and the bottom plate (3), a rotating frame (10) is arranged inside the fin tubes (4), a rotating rod (11) is arranged above the rotating frame (10), and an elastic membrane (12) is arranged between the bottom of the rotating rod (11) and the rotating frame (10), characterized in that: The heat exchanger also includes: A driving assembly (6) is arranged above the fin tube (4), and the driving assembly (6) is used to drive the rotating rod (11), the rotating frame (10) and the elastic membrane (12) to rotate, so as to generate centrifugal force to throw the liquid toward the inner wall of the fin tube (4); An adjusting component (7) 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 limiting assembly (5) is arranged inside the fin tube (4) and is used to block part of the liquid from entering the position above the elastic membrane (12), thereby limiting the flow of the liquid entering the position above the elastic membrane (12). The limiting assembly (5) includes a rotating bar (51) that is rotatably connected to the top of the inner side of the fin tube (4) in an annular array, and an elastic membrane (52) is fixedly connected between the top of the rotating bar (51) and the inner wall of the fin tube (4).

2. The energy-saving fin heat exchanger according to claim 1, characterized in that: The inner wall of the housing (1) is located above the top plate (2) and is fixed with a partition (13). The inner wall of the housing (1) is located above the partition (13) and is slidably provided with a lifting plate (14). The top of the outer wall of the rotating rod (11) is rotatably connected to the partition (13). The driving component (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 driving gear (63). The driving component (6) also includes a passive gear (64) fixedly connected to the outer wall of the top of the rotating rod (11). The plurality of passive gears (64) are meshed with the active gear (63).

3. The energy-saving fin 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), and the adjustment component (7) includes a moving frame (71) slidably connected to the inside of the rotating rod (11), and the bottom of the moving frame (71) extends into the inside of the elastic membrane (12) and is fixedly connected to an extrusion disk (72), and the extrusion disk (72) is slidably connected to the round rod (15). The adjustment component (7) also includes a circular ring (73) fixedly connected to the inside of the rotating rod (11), and a spring (74) is fixedly connected between the circular ring (73) and the moving frame (71). The adjustment component (7) also includes a slide (75) slidably connected to the top of the rotating frame (10) in an annular array, and an outer wall of the slide (75) is fixedly connected to a propulsion plate (76), and the outer side of the propulsion plate (76) is fixedly connected to the elastic membrane (12).

4. The energy-saving fin heat exchanger according to claim 3, characterized in that: The propulsion plate (76) is arranged close to the extrusion plate (72) and the extrusion plate (72) is arranged close to the propulsion plate (76) at an angle.

5. The energy-saving fin heat exchanger according to claim 4, characterized in that: The adjustment assembly (7) further includes an electric telescopic rod (77) fixedly connected to the top inner side of the housing (1), an 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. The energy-saving fin heat exchanger according to claim 1, characterized in that: The heat exchanger also includes: An adjustment component (8) is disposed at the bottom of the rotating bar (51). The adjustment component (8) is used to adjust the flow rate of the liquid falling on the elastic membrane (12). The adjustment component (8) includes a small rod (81) fixedly connected to both sides of the outer wall of the slide (75). The side of the small rod (81) away from the slide (75) passes through the rotating rod (11) and is fixedly connected to a rotating ring (82). The top of the rotating ring (82) is rotatably connected to an extrusion frame (83). The top of the extrusion frame (83) is in an arc shape near the rotating bar (51).

7. The energy-saving fin heat exchanger according to claim 6, characterized in that: The rotating rod (11) is provided with an empty slot (16) near the small rod (81), the interior of the empty slot (16) is fixedly connected with a flexible membrane (17), and the interior of the flexible membrane (17) is fixedly connected to the small rod (81).

8. The energy-saving fin heat exchanger according to claim 1, characterized in that: The heat exchanger also includes: The gathering assembly (9) is arranged above the rotating ring (82), and the gathering assembly (9) includes a tilting ring (91) fixedly connected to the inside of the fin tube (4), and the inner side of the tilting ring (91) is tilted. The gathering assembly (9) also includes a moving rod (93) slidably connected to the inside of the extrusion frame (83), and the moving rod (93) is tilted near the tilting ring (91). The gathering assembly (9) also includes a gathering film (92) fixedly connected to the inside of the extrusion frame (83), and the moving rod (93) extends into the inside of the extrusion frame (83) and is fixedly connected to an extrusion arc plate (94) near the gathering film (92).

9. The energy-saving finned heat exchanger according to claim 8, characterized in that: The extrusion arc plate (94) is arranged tilted.

10. An energy-saving fin-type heat exchange method, characterized in that: The method is applicable to the energy-saving fin heat exchanger according to any one of claims 1 to 9, and comprises the following steps: S1, liquid inlet, adding the liquid to be heat exchanged into the interior of the shell (1) above the top plate (2), and the liquid flows into the interior of the finned tube (4); S2, heat exchange, adding steam between the top plate (2) and the bottom plate (3) inside the shell (1) to exchange heat with the liquid in the finned tube (4).

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