Double-walled plate energy-saving heat exchanger

Abstract

The application discloses a double-wall plate type energy-saving heat exchanger and relates to the technical field of plate type heat exchangers. The double-wall plate type energy-saving heat exchanger comprises a fixed plate, a sealing ring fixedly connected to the outer side of the fixed plate, a square plate fixedly connected to the side, away from the fixed plate, of the sealing ring, a clamping plate fixedly connected to the middle of the side, close to the sealing ring, of the fixed plate, an inclined plate fixedly connected to the side, close to the clamping plate, of the square plate, a baffle fixedly connected to the opposite side end of the clamping plate, and an intermediate plate fixedly connected to the end, away from the baffle, of the clamping plate. The double-wall plate type energy-saving heat exchanger is characterized in that the inside of the heat exchange plate is provided with a trapezoidal inner cavity formed by the baffle, the intermediate plate and two partition plates, the parallel sides of the trapezoidal inner cavity are vertically arranged, the two ends of the bottom side of the trapezoidal inner cavity are communicated with the through holes of the opposite two sleeves, thereby forming a flow channel, a plurality of heat exchange components are arranged, two kinds of independent flow channels arranged alternately are formed, and heat transfer between two or more kinds of fluids with different temperatures is realized.

Description

Technical Field

[0001] This invention relates to the field of plate heat exchanger technology, specifically a double-walled plate energy-saving heat exchanger. Background Technology

[0002] Heat exchangers, as key equipment for heat exchange and transfer in the industrial field, are widely used in many industries such as chemical, petroleum, power, food, and HVAC, playing a core supporting role in energy efficiency, precise process control, and product quality assurance. Over a century of development, they have evolved from early simple tubular heat exchangers to diverse types such as plate and shell, spiral plate, and plate heat exchangers. Each innovation has focused on improving heat exchange efficiency, expanding adaptability to operating conditions, and enhancing structural reliability. The double-walled plate heat exchanger emerged precisely in response to this wave of technological iteration and the complex demands of industrial applications.

[0003] The double-walled plate in a double-walled heat exchanger is essentially an independent heat exchange unit consisting of two sets of plates (or a set of composite plates) and sealing elements. In order to pursue sealing reliability under high pressure conditions, traditional double-walled plates often adopt a fully welded structure for edge sealing, that is, the edges of the double-layer plates are completely welded into a closed unit. Once one set of plates of the double-walled plate is damaged, it cannot be disassembled alone when replacing it. It is necessary to cut along the weld seam with special equipment first, which may also damage the plates or sealing surfaces of adjacent double-walled plates, resulting in a long maintenance cycle. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a double-walled plate energy-saving heat exchanger, comprising a frame and an adjustment assembly, wherein the adjustment assembly is slidably connected to the frame; The heat exchange components are fixedly installed at the interval between the regulating components and the frame. There are multiple heat exchange components, and adjacent heat exchange components are flipped. The heat exchange assembly includes a fixed plate, a sealing ring fixedly connected to the outer side of the fixed plate, a square plate fixedly connected to the side of the sealing ring away from the fixed plate, and two clamping plates fixedly connected to the middle of the side of the fixed plate near the sealing ring. The clamping plates are symmetrically arranged on the fixed plate and are inclined. An inclined plate is fixedly connected to the side of the square plate near the clamping plate. A baffle is fixedly connected to the opposite end of the clamping plate. A middle plate is fixedly connected to the end of the clamping plate away from the baffle. The two ends of the middle plate and the two ends of the baffle are respectively connected to the two ends of two partition plates. Initially, the fixed plate, sealing ring, and square plate are assembled together to form a heat exchange plate. The card plate is located at the interval between two inclined plates in a set, merging into a partition plate. Then, the sleeve is installed at the corner of the heat exchange plate, so that the sleeve connects the fixed plate, sealing ring and square plate together. At this time, the interior of the heat exchange plate forms a trapezoidal cavity through the baffle, intermediate plate and two partition plates. The parallel sides of the trapezoid are set vertically. The two ends of the bottom edge of the trapezoidal cavity are connected to the through holes of the two diagonally opposite sleeves, thus forming a flow channel. By setting multiple heat exchange components, two kinds of alternating independent flow channels are formed, namely hot fluid flow channel and cold fluid flow channel, to realize the heat transfer between two or more fluids with different temperatures, while ensuring that the hot and cold fluids do not come into direct contact.

[0005] Preferably, the sealing ring is trapezoidal, the edge of the fixing plate near the sealing ring is chamfered, and the edge of the fixing plate is parallel to the sealing ring. The edge of the square plate near the sealing ring is also chamfered, and the edge of the square plate is parallel to the sealing ring. The internal flow channel of the heat exchange plate serves as an independent main fluid flow channel. The heat exchange plate forms a closed flow channel space, and different media, such as process fluid and heat exchange medium, flow in their respective heat exchange plate cavities, achieving complete physical isolation. Compared with traditional single-wall plate flow channels, the closed structure of the heat exchange plate cavity reduces the medium permeation path. Even if a small crack appears in one side plate, the medium will be confined to its own cavity rather than directly permeating into the adjacent medium flow channel. At the same time, the fixing plate and the square plate are snap-fitted together by the cooperation of the clamping plate and the inclined plate. The structure restricts the tensile deformation of the plates due to medium pressure during fluid flow, reduces the compression displacement of the sealing ring, ensures a tight seal, and lowers the probability of fluid leakage from the plate gaps. Simultaneously, when cleaning the inner cavity flow channel or replacing a damaged plate, the corresponding heat exchange plate unit can be directly separated, allowing direct contact with the inner cavity flow channel. A sleeve is provided at the corner of the fixed plate, penetrating both the fixed plate and the square plate along the thickness direction. There are four sleeves in total, divided into two groups. The sleeves in one group are diagonally arranged. Two sleeves in each group have through holes on their outer sides, with the openings located between the retaining plate and the intermediate plate. The two groups of sleeves between adjacent heat exchange components are staggered. Two trapezoidal grooves are provided in the middle of the side of the fixed plate. A trapezoidal groove is symmetrically arranged at both ends of the fixed plate in the vertical direction. The trapezoidal groove extends along the thickness direction of the fixed plate until it completely penetrates through it. The trapezoidal groove starts from the side of the fixed plate away from the sealing ring, passes through the fixed plate and the sealing ring in sequence, and finally penetrates to the side of the square plate away from the sealing ring. The groove outlines on the three layers of the plate are completely consistent and coaxially aligned, without interlayer misalignment or discontinuity, forming a continuous through channel. A corrugated plate is provided on the side of the fixed plate near the square plate, and a corrugated groove is opened on the side of the fixed plate near the corrugated plate. The corrugated plate is located inside the corrugated groove. There are multiple corrugated grooves, which are divided into two groups. The two groups of corrugated grooves are respectively set on the fixed plate and the square plate. The corrugated plate is set vertically, and the trapezoidal inner cavity presents a shape with vertical parallel sides. Inlet and outlet Located at the bottom edge, the fluid enters from the inlet and naturally diffuses along the inclined direction of the perpendicular parallel edge, avoiding the dead zones formed by fluid accumulation at the corners that are common in traditional rectangular cavities. Simultaneously, the vertically positioned parallel edge guides the fluid to flow vertically along the cavity wall, reducing lateral flow and minimizing velocity deviation across the entire cavity cross-section. This ensures that every heat exchange surface is in full contact with the fluid, maximizing the utilization of the heat exchange area. A corrugated plate vertically positioned in the center of the cavity creates periodic vortices and shear flows as the fluid passes through, effectively compensating for the fluid's insufficient thermal conductivity and improving heat exchange efficiency. Multiple corrugated plates are evenly arranged between the middle plate and the baffle. A frame-shaped rubber strip is fixedly connected to the outside of the sealing ring.There are two adhesive strips, symmetrically arranged around the sealing ring. A square groove, frame-shaped, is formed on the edge of the fixing plate near the sealing ring. One adhesive strip located near the sealing ring on the fixing plate is inside the square groove. A retaining groove is formed on the edge of the square plate near the sealing ring, and another adhesive strip located near the sealing ring on the square plate is inside the retaining groove. Multiple hexagonal grooves are formed on the inner wall of the fixing plate, divided into two groups, symmetrically arranged around the corrugated plate. A cylinder is fixedly connected to the side of the square plate near the groove; the hexagonal cylinder has multiple facets. The surface divides the fluid into multiple uniform streams, guiding the fluid smoothly along the cylindrical surface towards the depths of the inner cavity. This prevents impurities from being trapped and deposited by eddies, ensuring flow stability. The uniform fluid, after being divided by the hexagonal cylinder, flows smoothly towards the corrugated plate area under the guidance of the trapezoidal inner cavity. This avoids localized idleness of the corrugated plate due to uneven fluid distribution, further ensuring continuous disturbance by the corrugated plate throughout the fluid flow. This prevents turbulence from weakening due to kinetic energy decay in the later stages of flow, maintaining a highly turbulent state throughout the entire inner cavity flow process and ensuring stable heat transfer efficiency. Multiple hexagonal cylinders are located inside the groove.

[0006] Preferably, the frame includes an end plate, with two supports fixedly connected to the bottom of the end plate. These supports are symmetrically arranged at both ends of the bottom of the end plate. Multiple through slots are formed on the sides of the end plate, divided into two groups. These two groups of through slots are symmetrically arranged on both sides of the end plate in the horizontal direction. The through slots penetrate the end plate along its thickness direction. A screw is installed inside each through slot, with one end of the screw fixedly connected to the end plate through the through slot. Multiple screws are present. Four pipes are fixedly connected to one side of the end plate, divided into two groups. Two pipes in each group are vertically symmetrically arranged. The two groups of pipes are respectively hot water inlet / outlet and cold water inlet / outlet. The axis of the pipes is on the same straight line as the axis of the sleeve. The side of the end plate away from the pipes is fixedly connected... There are two guide rods, symmetrically arranged around the heat exchanger assembly. The guide rods are located inside the trapezoidal groove. The guide rods are trapezoidal in design, and through the sliding fit between the trapezoidal groove and the guide rod, the trapezoidal structure of the groove allows the guide rod to be embedded in the trapezoidal groove of the heat exchanger plate. The inclined surfaces on both sides of the groove fit tightly with the sides of the guide rod, forming a natural bidirectional limit. This ensures that the internal flow channels of multiple heat exchanger assemblies are precisely aligned, avoiding increased fluid resistance or local turbulence caused by flow channel misalignment, and ensuring stable heat exchange efficiency. The end of the guide rod away from the end plate is fixedly connected to a support column, and the end of the screw away from the end plate is threadedly connected to an L-shaped plate. There are multiple L-shaped plates, and positioning plates are fixedly connected to the sides of the L-shaped plates. The positioning plates are triangular, and the right-angled plates of the positioning plates are fixedly connected to the turning points of the L-shaped plates. The positioning plates are symmetrically arranged around the screw.

[0007] Preferably, the adjusting assembly includes a movable clamping plate, and the heat exchange assembly is located in the gap between the end plate and the movable clamping plate. The movable clamping plate has two guide grooves at its ends, symmetrically arranged at both ends in the vertical direction. Guide rods are located inside the guide grooves, and the movable clamping plate is slidably connected to the frame via the guide rods. The heat exchange assembly is installed in the gap between the two guide rods, the end plate, and the movable clamping plate. Then, by tightening the nuts, the end plate and the movable clamping plate are brought into close contact with the heat exchange assembly located at both ends. Simultaneously, a positioning plate is located inside the inclined groove, and an L-shaped plate contacts the surface of the movable clamping plate. By setting the L-shaped plate, a right-angle load-bearing structure is formed. Compared to the traditional method of directly pressing the movable clamping plate with a nut, the L-shaped plate can... The axial tightening force is evenly distributed over a larger area of ​​the movable clamping plate, thereby reducing local pressure on the movable clamping plate and preventing it from denting due to pressure concentration. This also reduces direct wear between the nut and the movable clamping plate, extending the component's service life. Rollers are rotatably connected to the inner side of the guide groove, and the outer sides of the rollers are slidably connected to the side of the guide rod away from the heat exchange component. Circular grooves are formed on the side of the movable clamping plate, with the screw located inside these grooves. The inner side of the L-shaped plate contacts the movable clamping plate. Multiple circular grooves extend through the movable clamping plate along its thickness. These grooves are divided into two groups, symmetrically positioned at both ends of the movable clamping plate in the horizontal direction. A spring is fixedly connected to the side of the movable clamping plate closest to the heat exchange component. The elastic plate is V-shaped and pre-compressed during assembly to create a continuous elastic preload force acting on the end face of the heat exchange component. When the screw becomes slightly loose due to long-term operation, or when the sealing surface gap of the heat exchange component increases due to temperature changes, the elastic plate releases the preload force through elastic rebound, replenishing the sealing surface pressure and preventing seal leakage due to insufficient pressure. This reduces the number of downtimes caused by seal maintenance. Furthermore, the diagonally arranged elastic plates can evenly transmit the elastic preload force to the sealing surface along the diagonal direction, avoiding uneven pressure caused by local elastic components. Through the cross force of the diagonal, it is ensured that the sealing rings at the edges and in the middle area of ​​the heat exchange plate are in a stable compressed state, preventing edge leakage due to insufficient local pressure. For edge leakage or intermediate leakage, there are four elastic plates, which are distributed along the diagonal of the movable clamping plate, forming an X shape. The end of the movable clamping plate away from the elastic plates has a slanted groove. The slanted groove on the movable clamping plate fits tightly with the slanted edge of the positioning plate, forming a slanted interlocking structure. This interlocking can convert the axial tightening force of the nut into a lateral compressive force on the positioning plate, causing friction between the triangular plate and the slanted groove, further enhancing the locking effect. It can prevent the nut from loosening due to thermal expansion of the material and ensure long-term stable fastening. There are multiple slanted grooves, with two slanted grooves forming a group. The two slanted grooves in a group are symmetrically arranged with the circular groove as the center. The positioning plate is located inside the slanted groove.

[0008] This invention provides a double-walled plate type energy-saving heat exchanger. It has the following beneficial effects: I. This double-walled plate energy-saving heat exchanger is formed by vertically setting the parallel sides of a trapezoid. The two ends of the bottom edge of the trapezoidal inner cavity are connected to the through holes of two diagonally opposite sleeves, thus forming a flow channel. By setting multiple heat exchange components, two kinds of alternating independent flow channels are formed, namely hot fluid flow channel and cold fluid flow channel, to realize the heat transfer between two or more fluids with different temperatures, while ensuring that the hot and cold fluids do not come into direct contact.

[0009] Second, this double-walled plate energy-saving heat exchanger, through its snap-fit ​​structure, can limit the pulling deformation of the plates by the medium pressure during fluid flow, reduce the squeezing displacement of the sealing ring, ensure that the sealing surface is always tightly fitted, and reduce the probability of fluid leakage from the gap between the plates. At the same time, when it is necessary to clean the inner cavity flow channel or replace the damaged plate, the corresponding heat exchange plate unit can be directly separated, so that the inner cavity flow channel can be directly contacted.

[0010] Third, this double-walled plate energy-saving heat exchanger guides the fluid to flow vertically along the cavity wall through the vertically set parallel edges, reducing lateral flow and lowering the flow velocity deviation of the fluid throughout the entire inner cavity cross section. This ensures that every heat exchange surface can fully contact the fluid, maximizing the utilization of the heat exchange area. The corrugated plate vertically set in the middle of the inner cavity forms periodic eddies and shear flows when the fluid flows through it, which can effectively compensate for the insufficient thermal conductivity of the fluid itself and improve the heat exchange efficiency.

[0011] Fourth, this double-walled plate energy-saving heat exchanger uses the multifaceted hexagonal cylinder to divide the fluid into multiple uniform streams, guiding the fluid to flow smoothly along the cylindrical surface into the depths of the inner cavity. This avoids eddies carrying impurities and ensuring flow stability. The uniform fluid after being divided by the hexagonal cylinder flows smoothly to the corrugated plate area under the guidance of the trapezoidal inner cavity, avoiding the corrugated plate being partially idle due to uneven fluid distribution. Furthermore, the corrugated plate continuously generates disturbances throughout the fluid flow, preventing the fluid from weakening due to kinetic energy decay in the later stages of flow. This ensures that the fluid maintains a high turbulent state throughout the entire inner cavity flow process, ensuring stable heat transfer efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of another side view of the present invention; Figure 3 This is a schematic diagram of the heat exchange component of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the heat exchange component of the present invention; Figure 5 This is a partial structural schematic diagram of the heat exchange component of the present invention; Figure 6 This is a schematic diagram of the structure of the fixing plate of the present invention; Figure 7This is a schematic diagram of the structure of the square plate of the present invention; Figure 8 This is a schematic diagram of the frame structure of the present invention; Figure 9 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 10 This is a structural schematic diagram of the adjustment component of the present invention from another side view; Figure 11 This is a schematic diagram of the structure of the elastic plate of the present invention.

[0013] In the diagram: 1. Frame; 11. End plate; 12. Screw; 13. Through groove; 14. Pipe; 15. Support; 16. Guide rod; 17. Support column; 18. L-shaped plate; 19. Positioning plate; 2. Heat exchange assembly; 21. Fixing plate; 22. Sealing ring; 23. Square plate; 24. Sleeve; 25. Through hole; 26. Trapezoidal groove; 27. Groove; 28. Corrugated plate; 29. ​​Clamping plate; 210. Baffle; 211. Intermediate plate; 212. Rubber strip; 213. Square groove; 214. Clamping groove; 215. Inclined plate; 216. Corrugated groove; 217. Cylinder; 3. Adjustment assembly; 31. Movable clamping plate; 32. Circular groove; 33. Elastic plate; 34. Roller; 35. Guide groove; 36. Inclined groove. Detailed Implementation

[0014] 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.

[0015] First embodiment, such as Figures 1 to 7 As shown, the present invention provides a technical solution: a double-walled plate type energy-saving heat exchanger, including a frame 1 and an adjustment component 3, wherein the adjustment component 3 is slidably connected to the frame 1; Heat exchange component 2 is fixedly installed at the interval between the regulating component 3 and the frame 1. There are multiple heat exchange components 2, and two adjacent heat exchange components 2 are flipped. The heat exchange assembly 2 includes a fixed plate 21. A sealing ring 22 is fixedly connected to the outer side of the fixed plate 21. A square plate 23 is fixedly connected to the side of the sealing ring 22 away from the fixed plate 21. A retaining plate 29 is fixedly connected to the middle part of the side of the fixed plate 21 near the sealing ring 22. There are two retaining plates 29, which are symmetrically arranged on the fixed plate 21. The retaining plates 29 are inclined. An inclined plate 215 is fixedly connected to the side of the square plate 23 near the retaining plate 29. A baffle 210 is fixedly connected to the opposite end of the retaining plate 29. An intermediate plate 211 is fixedly connected to the end of the retaining plate 29 away from the baffle 210. The two ends of the intermediate plate 211 and the two ends of the baffle 210 are respectively connected to the two ends of the two partitions. In the initial state, the fixed plate 21 and the sealing ring 22 are... The square plate 23 and the square plate 23 are combined and installed to form a heat exchange plate, so that the clamping plate 29 is located at the interval between the two inclined plates 215 in the group, and is combined into a partition. Then, the sleeve 24 is installed at the corner of the heat exchange plate, so that the sleeve 24 connects the fixing plate 21, the sealing ring 22 and the square plate 23 together. At this time, the interior of the heat exchange plate is formed by the baffle 210, the intermediate plate 211 and the two partitions to form a trapezoidal inner cavity. The parallel sides of the trapezoid are set vertically, and the two ends of the bottom side of the trapezoidal inner cavity are connected to the through holes 25 of the two diagonal sleeves 24, thus forming a flow channel. By setting multiple heat exchange components 2, two kinds of alternating independent flow channels are formed, namely hot fluid flow channel and cold fluid flow channel, to realize the heat transfer between two or more fluids with different temperatures, while ensuring that the hot and cold fluids do not come into direct contact.

[0016] The sealing ring 22 is trapezoidal. The edge of the fixing plate 21 near the sealing ring 22 is chamfered, and the side of the fixing plate 21 is parallel to the sealing ring 22. The edge of the square plate 23 near the sealing ring 22 is also chamfered, and the side of the square plate 23 is parallel to the sealing ring 22. The internal flow channel of the heat exchange plate serves as an independent main fluid flow channel. The heat exchange plate forms a closed flow channel space, and different media, such as process fluid and heat exchange medium, flow in their respective heat exchange plate cavities, achieving complete physical isolation. Compared with traditional single-wall plate flow channels, the closed structure of the heat exchange plate cavity reduces the medium permeation path. Even if a small crack appears in a single side plate, the medium will be confined to its own cavity rather than directly permeating into the adjacent medium flow channel. At the same time, the fixing plate 21 and the square plate 23 are connected by... The clamping plate 29 and the inclined plate 215 are fitted together by a snap-fit ​​assembly. The snap-fit ​​structure can limit the pulling deformation of the plates by the medium pressure during fluid flow, reduce the extrusion displacement of the sealing ring, ensure that the sealing surface is always tightly fitted, and reduce the probability of fluid leakage from the gap between the plates. At the same time, when it is necessary to clean the inner cavity flow channel or replace the damaged plate, the corresponding heat exchange plate unit can be directly separated, so that the inner cavity flow channel can be directly contacted. A sleeve 24 is provided at the corner of the fixed plate 21. The sleeve 24 penetrates the fixed plate 21 and the square plate 23 along the thickness direction of the fixed plate 21. There are four sleeves 24, which are divided into two groups. The sleeves 24 in one group are diagonally arranged. The outer sides of the two sleeves 24 in one group are provided with through holes 25. The opening range of the through holes 25 is located between the clamping plate 29 and the inclined plate 215. Between the intermediate plates 211, the two sets of sleeves 24 between adjacent heat exchange components 2 are staggered. A trapezoidal groove 26 is provided in the middle of the side of the fixed plate 21. There are two trapezoidal grooves 26, symmetrically arranged at both ends of the fixed plate 21 in the vertical direction. The trapezoidal groove 26 extends along the thickness direction of the fixed plate 21 until it completely penetrates through. The trapezoidal groove 26 starts from the side of the fixed plate 21 away from the sealing ring 22, passes through the fixed plate 21 and the sealing ring 22 in sequence, and finally penetrates to the side of the square plate 23 away from the sealing ring 22. The groove outlines on the three plates are completely consistent and coaxially aligned, without interlayer misalignment or discontinuity, forming a continuous through channel. A corrugated plate 28 is provided on the side of the fixed plate 21 near the square plate 23. A corrugated groove 216 is provided on one side near the corrugated plate 28. The corrugated plate 28 is located inside the corrugated groove 216. There are multiple corrugated grooves 216, which are divided into two groups. The two groups of corrugated grooves 216 are respectively set on the fixed plate 21 and the square plate 23. The corrugated plate 28 is vertically arranged, and the trapezoidal inner cavity presents a shape with vertical parallel sides. The inlet and outlet are located at the bottom edge. After the fluid enters from the inlet, it can naturally diffuse along the inclined direction of the vertical parallel sides, avoiding the accumulation of fluid at the corners and the formation of dead zones that are easy to form in traditional rectangular inner cavities. At the same time, the vertically arranged parallel sides can guide the fluid to flow vertically along the cavity wall, reduce lateral flow, reduce the flow velocity deviation of the fluid in the entire inner cavity cross section, and ensure that every heat exchange surface can fully contact the fluid, maximizing the utilization of the heat exchange area.A corrugated plate 28 is vertically positioned in the middle of the inner cavity. When fluid flows through it, periodic eddies and shear flows are formed on the corrugated plate 28, which can effectively compensate for the insufficient thermal conductivity of the fluid itself and improve heat exchange efficiency. There are multiple corrugated plates 28, which are evenly arranged in the gap between the intermediate plate 211 and the baffle 210. A rubber strip 212 is fixedly connected to the outside of the sealing ring 22. The rubber strip 212 has a frame-shaped design, and there are two rubber strips 212. 12. Symmetrically arranged around the sealing ring 22, the fixing plate 21 has a square groove 213 on one edge near the sealing ring 22. The square groove 213 is frame-shaped. One of the adhesive strips 212 located at the end of the sealing ring 22 near the fixing plate 21 is located inside the square groove 213. The square plate 23 has a slot 214 on one edge near the sealing ring 22. One of the adhesive strips 212 located at the end of the sealing ring 22 near the square plate 23 is located inside the slot 214. The inner wall of the fixing plate 21 has... The grooves 27 are hexagonal in design, and there are multiple grooves 27. These grooves are divided into two groups, symmetrically arranged around the corrugated plate 28. A cylinder 217 is fixedly connected to the side of the square plate 23 near the grooves 27. The multifaceted surfaces of the hexagonal cylinder 217 divide the fluid into multiple uniform streams, guiding the fluid smoothly along the surface of the cylinder 217 towards the depths of the inner cavity. This prevents impurities from being carried away by eddies and ensures flow stability. The uniform fluid after being divided by the hexagonal cylinder flows smoothly towards the corrugated plate 28 area under the guidance of the trapezoidal inner cavity, preventing the corrugated plate 28 from being partially idle due to uneven fluid distribution. This further ensures that the corrugated plate 28 continuously generates disturbance throughout the fluid flow, preventing the turbulence from weakening due to kinetic energy decay in the later stages of flow. This maintains a high turbulent state throughout the entire inner cavity flow, ensuring stable heat transfer efficiency. Multiple cylinders 217, each hexagonal in design, are located inside the grooves 27.

[0017] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figure 8As shown, the frame 1 includes an end plate 11. A support 15 is fixedly connected to the bottom of the end plate 11. There are two supports 15, symmetrically arranged at both ends of the bottom of the end plate 11. Multiple through slots 13 are provided on the sides of the end plate 11. These through slots 13 are divided into two groups, symmetrically arranged on both sides of the end plate 11 in the horizontal direction. The through slots 13 penetrate the end plate 11 along its thickness direction. A screw 12 is installed inside the through slot 13. One end of the sleeve 24 is fixedly connected to the end plate 11 via the through groove 13. There are multiple screws 12. A pipe 14 is fixedly connected to one side of the end plate 11. There are four pipes 14, which are divided into two groups. The two pipes 14 in each group are arranged vertically and symmetrically. The two groups of pipes 14 are respectively the hot water inlet and outlet and the cold water inlet and outlet. The axis of the pipe 14 is on the same straight line as the axis of the sleeve 24. The side of the end plate 11 away from the pipe 14 Two guide rods 16 are fixedly connected and symmetrically arranged around the heat exchange assembly 2. The guide rods 16 are located inside the trapezoidal groove 26. The guide rods 16 are trapezoidal in design. Through the sliding fit between the trapezoidal groove 26 and the guide rod 16, the trapezoidal structure of the groove 26 allows the guide rod 16 to be embedded in the heat exchange plate. The inclined surfaces on both sides of the groove closely fit the sides of the guide rod 16, forming a natural bidirectional limiting effect. This ensures the smooth flow of the internal channels of multiple heat exchange assemblies 2. Precise alignment avoids increased fluid resistance or local turbulence caused by misalignment of the flow channel, ensuring stable heat exchange efficiency. The end of the guide rod 16 away from the end plate 11 is fixedly connected to a support column 17, and the end of the screw 12 away from the end plate 11 is threadedly connected to an L-shaped plate 18. There are multiple L-shaped plates 18, and a positioning plate 19 is fixedly connected to the side of the L-shaped plate 18. The positioning plate 19 is triangular, and the right angle plate of the positioning plate 19 is fixedly connected to the turning point of the L-shaped plate 18. The positioning plate 19 is symmetrically arranged with the screw 12 as the center.

[0018] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 9 to 11As shown, the adjusting assembly 3 includes a movable clamping plate 31. The heat exchange assembly 2 is located at the gap between the end plate 11 and the movable clamping plate 31. Two guide grooves 35 are provided at the ends of the movable clamping plate 31, symmetrically arranged at both ends of the movable clamping plate 31 in the vertical direction. Guide rods 16 are located inside the guide grooves 35. The movable clamping plate 31 is slidably connected to the frame 1 via the guide rods 16. The heat exchange assembly 2 is installed at the gap between the two guide rods 16, the end plate 11, and the movable clamping plate 31. Then, by tightening the nuts, the end plate 11 and the movable clamping plate 31 are brought into close contact with the heat exchange assembly 2 located at both ends. Simultaneously, the positioning plate 19 is located inside the inclined groove 36, and the L-shaped plate 18 contacts the surface of the movable clamping plate 31. By setting the L-shaped plate 19... 8. A right-angle load-bearing structure is formed. Compared with the traditional method of directly pressing the movable clamping plate 31 with a nut, the L-shaped plate 18 can evenly distribute the axial tightening force of the nut to a larger area of ​​the movable clamping plate 31, thereby reducing the local pressure on the movable clamping plate 31 and avoiding the indentation of the movable clamping plate 31 due to pressure concentration. At the same time, it reduces the direct wear between the nut and the movable clamping plate 31 and extends the service life of the component. The inner side of the guide groove 35 is rotatably connected to a roller 34. The outer side of the roller 34 is slidably connected to the side of the guide rod 16 away from the heat exchange component 2. A circular groove 32 is opened on the side of the movable clamping plate 31. The screw 12 is located inside the circular groove 32. The inner side of the L-shaped plate 18 contacts the movable clamping plate 31. The circular groove 32 penetrates the movable clamping plate 31 along the thickness direction of the movable clamping plate 31. There are multiple grooves 32, which are divided into two groups. The two groups of grooves 32 are symmetrically arranged at both ends of the movable clamping plate 31 in the horizontal direction. An elastic plate 33 is fixedly connected to the side of the movable clamping plate 31 near the heat exchange component 2. The elastic plate 33 is V-shaped and is pre-compressed during assembly to form a continuous elastic preload force, which acts on the end face of the heat exchange component 2. When the screw 12 becomes slightly loose due to long-term operation, or when the gap between the sealing surfaces of the heat exchange component 2 increases due to temperature changes, the elastic plate 33 releases the preload force through elastic rebound, replenishing the pressure on the sealing surface, avoiding sealing leakage due to insufficient pressure, reducing the number of downtimes caused by sealing maintenance, and the diagonally arranged elastic plates 33 can evenly transmit the elastic preload force along the diagonal direction. The sealing surface avoids uneven pressure caused by local elastic components. Through diagonal cross-force distribution, it ensures that the sealing rings at the edges and in the middle of the heat exchange plate are in a stable compressed state, preventing edge or middle leakage due to insufficient local pressure. There are four elastic plates 33, distributed along the diagonal of the movable clamping plate 31, forming an X shape. A slanted groove 36 is provided at the end of the movable clamping plate 31 away from the elastic plates 33. The slanted groove 36 on the movable clamping plate 31 fits tightly with the inclined edge of the positioning plate 19, forming a slanted interlocking structure. This interlocking converts the axial tightening force of the nut into a lateral compressive force on the positioning plate 19, generating friction between the triangular plate and the slanted groove, further enhancing the locking effect.This design prevents nuts from loosening due to material thermal expansion, ensuring a long-term stable fastening condition. Multiple inclined grooves 36 are present, with two grooves 36 forming a group. Within each group, the two inclined grooves 36 are symmetrically arranged around the circular groove 32. The positioning plate 19 is located inside the inclined groove 36.

[0019] In use, the two ends of the intermediate plate 211 and the two ends of the baffle 210 are respectively connected to the two ends of the two partitions. In the initial state, the fixed plate 21, the sealing ring 22 and the square plate 23 are assembled together to form a heat exchange plate, so that the clamping plate 29 is located at the interval between the two inclined plates 215 in a group, and is assembled into a partition. Then, the sleeve 24 is installed at the corner of the heat exchange plate, so that the sleeve 24 connects the fixed plate 21, the sealing ring 22 and the square plate 23 together. At this time, the heat exchange plate is connected by the baffle 210 and the intermediate plate 21. 1 and two partitions form a trapezoidal inner cavity. The parallel sides of the trapezoid are set vertically. The two ends of the bottom side of the trapezoidal inner cavity are connected to the through holes 25 of the two diagonally opposite sleeves 24, thus forming a flow channel. By setting multiple heat exchange components 2, two kinds of alternating independent flow channels are formed, namely hot fluid flow channel and cold fluid flow channel. Different media (such as process fluid and heat exchange medium) flow in their respective heat exchange plate inner cavities to realize heat transfer between two (or more) fluids with different temperatures, while ensuring that the hot and cold fluids do not come into direct contact.

[0020] Multiple heat exchange components 2 are alternately flipped and installed in the gap between two guide rods 16, end plates 11 and movable clamping plates 31. Then, by tightening nuts, the end plates 11 and movable clamping plates 31 are in close contact with the heat exchange components 2 located at both ends. At the same time, the positioning plate 19 is located inside the inclined groove 36, and the L-shaped plate 18 is in contact with the surface of the movable clamping plate 31.

[0021] After being fixed, the corresponding fluids are introduced into the hot water inlet pipe 14 and the cold water inlet pipe 14 respectively, so that the fluids enter the interior of the sleeve 24 through the pipe 14, and enter the hot fluid flow channel and the cold fluid flow channel through the through hole 25 on the sleeve 24 respectively, and finally flow back from the bottom and are discharged from the outlet pipe 14.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-walled plate type energy-saving heat exchanger, characterized in that, It includes a frame (1) and an adjustment component (3), wherein the adjustment component (3) is slidably connected to the frame (1); Heat exchange component (2), the heat exchange component (2) is fixedly installed at the interval between the adjustment component (3) and the frame (1), there are multiple heat exchange components (2), and two adjacent heat exchange components (2) are flipped. The heat exchange assembly (2) includes a fixed plate (21), a sealing ring (22) is fixedly connected to the outer side of the fixed plate (21), a square plate (23) is fixedly connected to the side of the sealing ring (22) away from the fixed plate (21), and a clamping plate (29) is fixedly connected to the middle part of the fixed plate (21) near the sealing ring (22). There are two clamping plates (29), which are symmetrically arranged on the fixed plate (21). The clamping plates (29) are inclined. The square plate (23) is fixed to the side near the clamping plate (29). The inclined plate (215) is connected. There are four inclined plates (215) in total, which are divided into two groups. Each group has two inclined plates (215) and a clamping plate (29) in position. The opposite side end of the clamping plate (29) is fixedly connected to a baffle (210). The fixing plate (21), sealing ring (22) and square plate (23) are combined and installed to form a heat exchange plate, so that the clamping plate (29) is located at the interval between the two inclined plates (215) in the group, and is combined into a partition. The end of the clamping plate (29) away from the baffle (210) is fixedly connected to an intermediate plate (211).

2. The double-walled plate type energy-saving heat exchanger according to claim 1, characterized in that: The sealing ring (22) is trapezoidal. The edge of the fixing plate (21) near the sealing ring (22) is chamfered and the side of the fixing plate (21) is parallel to the sealing ring (22). The edge of the square plate (23) near the sealing ring (22) is chamfered and the side of the square plate (23) is parallel to the sealing ring (22). A sleeve (24) is provided at the corner of the fixing plate (21). The sleeve (24) penetrates the fixing plate (21) and the square plate (23) along the thickness direction of the fixing plate (21).

3. The double-walled plate energy-saving heat exchanger according to claim 2, characterized in that: There are four sleeves (24), which are divided into two groups. The sleeves (24) in one group are arranged diagonally. Two sleeves (24) in one group have through holes (25) on their outer sides. A trapezoidal groove (26) is provided in the middle of the side of the fixing plate (21). There are two trapezoidal grooves (26). The two trapezoidal grooves (26) are symmetrically arranged at both ends of the fixing plate (21) in the vertical direction. The trapezoidal grooves (26) extend along the thickness direction of the fixing plate (21) to completely penetrate through it.

4. A double-walled plate energy-saving heat exchanger according to claim 3, characterized in that: A wave plate (28) is provided on the side of the fixed plate (21) near the square plate (23). A wave groove (216) is provided on the side of the fixed plate (21) near the wave plate (28). The wave plate (28) is located inside the wave groove (216). There are multiple wave grooves (216). The multiple wave grooves (216) are divided into two groups. The two groups of wave grooves (216) are respectively provided on the fixed plate (21) and the square plate (23). The wave plate (28) is vertically arranged. There are multiple wave plates (28). The multiple wave plates (28) are evenly arranged in the interval between the middle plate (211) and the baffle (210).

5. A double-walled plate energy-saving heat exchanger according to claim 1, characterized in that: A rubber strip (212) is fixedly connected to the outside of the sealing ring (22). The rubber strip (212) is frame-shaped and there are two rubber strips (212). The two rubber strips (212) are symmetrically arranged with the sealing ring (22) as the center. A square groove (213) is provided on the side edge of the fixing plate (21) near the sealing ring (22). The square groove (213) is frame-shaped. One of the rubber strips (212) located at the end of the sealing ring (22) near the fixing plate (21) is located inside the square groove (213). A slot (214) is provided on the side edge of the square plate (23) near the sealing ring (22). One of the rubber strips (212) located at the end of the sealing ring (22) near the square plate (23) is located inside the slot (214).

6. A double-walled plate energy-saving heat exchanger according to claim 5, characterized in that: The inner wall of the fixing plate (21) is provided with a groove (27). The groove (27) is hexagonal in design. There are multiple grooves (27). The multiple grooves (27) are divided into two groups. The two groups of grooves (27) are symmetrically arranged with the wave plate (28) as the center. A cylinder (217) is fixedly connected to the side of the square plate (23) near the groove (27). There are multiple cylinders (217). The cylinders (217) are hexagonal in design and are located inside the groove (27).

7. A double-walled plate energy-saving heat exchanger according to claim 3, characterized in that: The frame (1) includes an end plate (11), and a support (15) is fixedly connected to the bottom of the end plate (11). There are two supports (15), which are symmetrically arranged at both ends of the bottom of the end plate (11). A through groove (13) is provided on the side of the end plate (11). There are multiple through grooves (13), which are divided into two groups. The two groups of through grooves (13) are symmetrically arranged on both sides of the end plate (11) in the horizontal direction. 13) An internal screw (12) is provided. One end of the screw (12) is fixedly connected to the end plate (11) through the through groove (13). There are multiple screws (12). A pipe (14) is fixedly connected to one side of the end plate (11). There are four pipes (14). The four pipes (14) are divided into two groups. The two pipes (14) in one group are arranged vertically and symmetrically. The axis of the pipe (14) and the axis of the sleeve (24) are on the same straight line.

8. A double-walled plate energy-saving heat exchanger according to claim 7, characterized in that: A guide rod (16) is fixedly connected to the side of the end plate (11) away from the pipe (14). There are two guide rods (16). The two guide rods (16) are symmetrically arranged with the heat exchange component (2) as the center. The guide rod (16) is located inside the trapezoidal groove (26). The guide rod (16) is trapezoidal in design. A support column (17) is fixedly connected to the end of the guide rod (16) away from the end plate (11). An L-shaped plate (18) is threadedly connected to the end of the screw (12) away from the end plate (11). There are multiple L-shaped plates (18). A positioning plate (19) is fixedly connected to the side of the L-shaped plate (18). The positioning plate (19) is symmetrically arranged with the screw (12) as the center.

9. A double-walled plate energy-saving heat exchanger according to claim 8, characterized in that: The adjustment component (3) includes a movable clamping plate (31). The heat exchange component (2) is located at the gap between the end plate (11) and the movable clamping plate (31). The end of the movable clamping plate (31) is provided with a guide groove (35). There are two guide grooves (35). The two guide grooves (35) are symmetrically arranged at both ends of the movable clamping plate (31) in the vertical direction. The guide rod (16) is located inside the guide groove (35). The movable clamping plate (31) is slidably connected to the frame (1) through the guide rod (16). The inner side of the guide groove (35) is rotatably connected with a roller (34). The outer side of the roller (34) is slidably connected to the side of the guide rod (16) away from the heat exchange component (2). The side of the movable clamping plate (31) is provided with a circular groove (32). The screw (12) is located inside the circular groove (32). The inner side of the L-shaped plate (18) is in contact with the movable clamping plate (31).

10. A double-walled plate energy-saving heat exchanger according to claim 9, characterized in that: The circular groove (32) penetrates the movable clamping plate (31) along the thickness direction. There are multiple circular grooves (32), which are divided into two groups. The two groups of circular grooves (32) are symmetrically arranged at both ends of the movable clamping plate (31) in the horizontal direction. An elastic plate (33) is fixedly connected to the side of the movable clamping plate (31) near the heat exchange component (2). The elastic plate (33) is V-shaped. There are four elastic plates (33), which are distributed along the diagonal of the movable clamping plate (31). An inclined groove (36) is opened at the end of the movable clamping plate (31) away from the elastic plate (33). There are multiple inclined grooves (36), which are divided into two groups. The two inclined grooves (36) in a group are symmetrically arranged with the circular groove (32) as the center. The positioning plate (19) is located inside the inclined groove (36).

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