Heat Exchanger

Abstract

The present application provides a heat exchanger, including a base and a movable clamping plate, an intermediate partition plate and a fixed clamping plate stacked in sequence on the base, the fixed clamping plate is arranged close to the base, multiple layers of heat exchange plates are arranged between the movable clamping plate and the intermediate partition plate and between the intermediate partition plate and the fixed clamping plate, and a sealing rubber pad is arranged between two adjacent layers of heat exchange plates; a cylindrical guide rod is connected between the movable clamping plate and the fixed clamping plate, the guide rod passes through the intermediate partition plate and is threadedly connected to the fixed clamping plate, the heat exchange plate is provided with an arc-shaped hanging positioning groove, and the hanging positioning groove is against the guide rod; a plurality of blind holes are arranged on the side wall of one end of the guide rod close to the fixed clamping plate, and the blind holes are used to be plugged and matched with the torsion rod to tighten the guide rod and the fixed clamping plate. The heat exchanger provided by the present application has a simple structure, is easy to manufacture, the guide rod is easy to tighten and disassemble, is not prone to leakage, has a good sealing effect, and has a long service life.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger. Background Art

[0002] Detachable plate heat exchangers are widely used in metallurgy, energy, shipbuilding and other industries due to their high efficiency and reliable heat exchange performance, small space occupation, easy cleaning and maintenance, etc. Usually, heat exchangers are firmly fixed in a certain place, and the whole does not move, or moves very little, and does not need to resist external forces such as movement and vibration, and has high reliability; however, in the shipbuilding industry, heat exchangers such as central coolers and even oil coolers have very harsh application conditions, especially large engines with vibration acceleration of more than 10g. In order to save space, these heat exchangers are directly integrated on the engine, and it is inevitable to withstand vibration.

[0003] The existing heat exchanger mainly consists of fixed clamping plate, middle partition, movable clamping plate, plate and rubber pad, tie rod, guide rod and other components. Under such a large vibration condition, how to ensure that the guide rod and other components do not loosen or break, the plate and rubber pad do not misalign, and the heat exchange medium does not leak, etc., is an urgent problem to be solved.

[0004] Patent CN215638959U discloses a marine heat exchanger, which has two heat exchange media, so there is no intermediate partition. Its guide rod is a round shaft structure, and the shaft is relatively long, which is not easy to tighten, or the guide rod will be damaged when tightened, causing the shaft to deform; the guide rod is processed with an outer hexagonal edge at one end close to the fixed clamping plate. Although it is easier to tighten, some plates will rely on the hexagonal edge for positioning. The positioning gap of the plates in this area is too large and inaccurate, and it will also deviate left and right during use, causing sealing problems and even leakage failures. In addition, during the disassembly and assembly process, the steps at the hexagonal edge are easy to jam the plates in this area, causing deformation of the plate hanging part.

[0005] Patent CN211598811U discloses a marine heat exchanger, which has three heat exchange media and a structure with a middle partition, and its guide rod is square. The middle partition is not connected with the fixed clamping plate and the movable clamping plate. On the one hand, it will cause the clamping size of the plate before and after the middle partition to deviate, affecting the sealing effect. On the other hand, when vibration occurs during operation, the plate will be compressed or loosened, which is prone to leakage. At the same time, the guide rod may also become loose. In addition, the square guide rod is used as the positioning of the plate suspension, which is affected by the plate and is not convenient to tighten and fix. Summary of the invention

[0006] In view of this, the purpose of the present application is to propose a heat exchanger to solve the related problems mentioned in the background technology.

[0007] The present application provides a heat exchanger, comprising a base and a movable pressure plate, an intermediate partition and a fixed pressure plate stacked in sequence on the base, the fixed pressure plate being arranged close to the base, multiple layers of heat exchange plates being arranged between the movable pressure plate and the intermediate partition and between the intermediate partition and the fixed pressure plate, and a sealing rubber pad being arranged between two adjacent layers of the heat exchange plates; a cylindrical guide rod being connected between the movable pressure plate and the fixed pressure plate, the guide rod passing through the intermediate partition and being threadedly connected to the fixed pressure plate, the heat exchange plate being provided with an arc-shaped hanging positioning groove, the hanging positioning groove being against the guide rod; a plurality of blind holes being provided on the side wall of one end of the guide rod close to the fixed pressure plate, the blind holes being used for plugging and cooperating with the torsion rod to tighten the guide rod and the fixed pressure plate.

[0008] Furthermore, the number of the blind holes is six, which are distributed at intervals around the axial direction of the guide rod, and along the circumference of the guide rod, the angle between the central axes of two adjacent blind holes is 60°.

[0009] Furthermore, the blind holes are in two groups, each group includes three blind holes that are spirally distributed at equal intervals around the axial direction of the guide rod; the spiral directions of the two groups of blind holes are the same, and the two groups of blind holes are spaced apart along the circumference of the guide rod, and the two groups of blind holes are staggered along the axial direction of the guide rod.

[0010] Furthermore, in each group of the blind holes, the spacing between two adjacent blind holes along the axial direction of the guide rod is a first spacing, and the first spacing is greater than or equal to 2.5 times the aperture of the blind hole and less than or equal to 4 times the aperture of the blind hole.

[0011] Furthermore, the blind hole closest to the fixed pressing plate is a first blind hole, and a distance between the first blind hole and an end of the guide rod close to the fixed pressing plate is greater than or equal to 20 mm.

[0012] Furthermore, the depth of the blind hole is 1 / 3 to 1 / 2 of the cross-sectional diameter of the guide rod.

[0013] Furthermore, a stud is provided at one end of the guide rod, and a threaded hole is provided at the other end, the stud is threadedly connected to the threaded hole of the fixed clamping plate, and the threaded hole is connected to the movable clamping plate by bolts.

[0014] Furthermore, a plurality of first pull rods are connected between the movable pressing plate and the middle partition plate, and a plurality of second pull rods are connected between the middle partition plate and the fixed pressing plate.

[0015] Furthermore, along the extension direction of the heat exchange plate, the first pull rod and the second pull rod are arranged in a staggered manner.

[0016] Furthermore, the torsion rod comprises a rod body, one end of the rod body is provided with a protrusion, and the protrusion is used to be plugged and matched with the blind hole to tighten the guide rod and fix the clamping plate.

[0017] From the above description, it can be seen that the heat exchanger provided by the present application includes a base and a movable clamping plate, an intermediate partition and a fixed clamping plate stacked in sequence on the base, the fixed clamping plate is arranged close to the base, and multiple layers of heat exchange plates are arranged between the movable clamping plate and the intermediate partition and between the intermediate partition and the fixed clamping plate, and a sealing rubber pad is arranged between two adjacent layers of heat exchange plates; a cylindrical guide rod is connected between the movable clamping plate and the fixed clamping plate, the guide rod passes through the intermediate partition and is threadedly connected to the fixed clamping plate, the heat exchange plate is provided with an arc-shaped hanging positioning groove, and the hanging positioning groove is against the guide rod; the guide rod is close to the fixed clamping plate A plurality of blind holes are provided on the side wall of one end of the plate, and the blind holes are used to plug and cooperate with the torsion rod to tighten the guide rod and fix the clamping plate; the cylindrical guide rod and the heat exchange plate are tightly matched and accurately positioned. The blind holes are provided on the guide rod, which can ensure torsional rigidity on the one hand, and the guide rod and the clamping plate can be tightened and fixed by the blind holes and the torsion rod, and the heat exchanger does not need to be disassembled when loosening the guide rod; on the other hand, the blind holes will not excessively reduce the shaft diameter, avoid the gap between the guide rod and the suspension positioning groove is too large, the heat exchange plate and the sealing pad are misaligned, and the heat exchange medium leaks, and the blind holes will not get stuck on the plate, causing deformation or even damage to the suspension position. The heat exchanger has a simple structure, is easy to make, the guide rod is easy to tighten and disassemble, is not prone to leakage, has a good sealing effect, and has a long service life, and is suitable for use in strong vibration scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of a three-dimensional structure of a heat exchanger in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] Figure 3 It is a schematic diagram of the structure of the cooperation between the guide rod and the torsion bar;

[0022] Figure 4 It is a schematic diagram of the structure of the cooperation between the guide rod and the heat exchange plate;

[0023] Figure 5 It is a schematic diagram of the structure of the guide rod cooperating with the movable pressing plate and the fixed pressing plate;

[0024] Figure 6 is a side view of a guide rod;

[0025] Figure 7 for Figure 6 Top view of the middle guide rod;

[0026] Figure 8 This is a schematic diagram of the distribution of the first type of blind holes on the side of the guide rod;

[0027] Fig. 9 This is a schematic diagram of the distribution of the second type of blind holes on the side of the guide rod;

[0028] Fig.10 This is a schematic diagram of the distribution of the third type of blind holes on the side of the guide rod.

[0029] Figure numerals: 1, base; 2, movable clamping plate; 2-1, bolt; 3, middle partition; 4, fixed clamping plate; 4-1, screw hole; 5, heat exchange plate; 5-1, suspension positioning groove; 6, sealing rubber pad; 7, guide rod; 7-1, blind hole; 7-2, stud; 7-3, threaded hole; 8, first pull rod; 9, second pull rod; 10, torsion bar; 10-1, rod body; 10-2, protrusion. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] The following is a specific embodiment and combined with Figures 1 to 10 To describe the technical solution of this application in detail.

[0033] In some embodiments of the present application, a heat exchanger is provided, such as Figures 1 to 5As shown, it includes a base 1 and a movable pressing plate 2, an intermediate partition 3 and a fixed pressing plate 4 which are stacked in sequence on the base 1, the fixed pressing plate 4 is arranged close to the base 1, and multiple layers of heat exchange plates 5 are arranged between the movable pressing plate 2 and the intermediate partition 3 and between the intermediate partition 3 and the fixed pressing plate 4, and a sealing rubber pad 6 is arranged between two adjacent layers of the heat exchange plates 5; a cylindrical guide rod 7 is connected between the movable pressing plate 2 and the fixed pressing plate 4, the guide rod 7 passes through the intermediate partition 3 and is threadedly connected to the fixed pressing plate 4, the heat exchange plate 5 is provided with an arc-shaped hanging positioning groove 5-1, and the hanging positioning groove 5-1 is against the guide rod 7; a plurality of blind holes 7-1 are provided on the side wall of one end of the guide rod 7 close to the fixed pressing plate 4, and the blind hole 7-1 is used to be plugged in with the torsion bar 10 to tighten the guide rod 7 and the fixed pressing plate 4.

[0034] like Figure 1 As shown, the heat exchanger includes a base 1, a movable pressing plate 2, a middle partition 3 and a fixed pressing plate 4. Figure 2 As shown, a plurality of heat exchange plates 5 are arranged between the compression plates. Figure 3 As shown, a sealing rubber pad 6 is provided between two adjacent heat exchange plates 5 , and the pressing plate squeezes the sealing rubber pad 6 to seal the heat exchange plates 5 .

[0035] like Figure 5 As shown, two guide rods 7 are connected between the movable pressing plate 2 and the fixed pressing plate 4. The guide rods 7 play a role in positioning and fixing the heat exchange plate 5 and are threadedly connected to the fixed pressing plate 4. The guide rods 7 are cylindrical in shape, such as Figure 4 As shown, the cylindrical guide rod 7 is tightly matched with the suspension positioning groove 5 - 1 of the heat exchange plate 5 , and the positioning is accurate.

[0036] like Figure 3 As shown, a plurality of blind holes 7-1 are provided on the guide rod 7, and the blind holes 7-1 are plugged into and matched with the torsion bar 10. The guide rod 7 can be driven to rotate by twisting the torsion bar 10, and then the guide rod 7 and the fixing clamping plate 4 can be tightened. On the one hand, the torsional rigidity can be ensured, and when the guide rod 7 is loosened, there is no need to disassemble the heat exchanger. On the other hand, the blind holes 7-1 will not excessively reduce the shaft diameter, so as to avoid the problem that the gap between the guide rod 7 and the suspension positioning groove 5-1 is too large, the heat exchange plate 5 and the sealing pad 6 are misaligned, and the heat exchange medium leaks. The blind holes 7-1 will not jam the plate, causing deformation or even damage to the suspension position.

[0037] The heat exchanger has a simple structure and is easy to manufacture. The guide rod 7 is easy to tighten and disassemble, is not prone to leakage, has a good sealing effect, and has a long service life, and is suitable for use in strong vibration scenarios.

[0038] In some embodiments, Figure 6 and Figure 7As shown, the number of the blind holes 7 - 1 is six, which are spaced apart around the axial direction of the guide rod 7 , and along the circumference of the guide rod 7 , the included angle between the central axes of two adjacent blind holes 7 - 1 is 60°.

[0039] like Figure 4 As shown, both ends of the heat exchange plate 5 are provided with hanging positioning grooves 5-1, which are arc-shaped and partially close the guide rod 7 after abutting against the guide rod 7. Figure 3 As shown, only a rotation range of about 90° of the guide rod 7 can expose the heat exchanger.

[0040] like Figure 6 As shown, the Z direction is the axial direction of the guide rod 7, and the C direction is the circumferential direction of the guide rod 7. Six blind holes 7-1 are arranged at intervals around the axial direction of the guide rod 7, as shown in FIG. Figure 7 As shown, along the circumference of the guide rod 7, the central axis angle between two adjacent blind holes 7-1 is β, and β is 60°. In this way, after the torsion bar 10 is inserted into a blind hole 7-1 and the guide rod 7 is twisted about 90°, the heat exchanger will be exposed in the next blind hole 7-1. The torsion bar 10 can be inserted into the next blind hole 7-1 and the guide rod 7 can be twisted continuously. The six blind holes 7-1 are exactly 360° around a circle, and there is no dead angle, thereby realizing the continuous rotation of the guide rod 7 in the circumferential direction.

[0041] If the number of blind holes 7-1 is small and the angle between the central axes of the two blind holes 7-1 is large, the guide rod 7 may not be able to twist continuously. For example, when there are 4 blind holes 7-1 and the angle between the central axes of the two blind holes 7-1 is 90°, after the torsion bar 10 is inserted into a blind hole 7-1 to twist the guide rod 7, the next blind hole 7-1 may be blocked by the heat exchange plate 5, resulting in the inability to tighten the guide rod 7; if the number of blind holes 7-1 is large and the angle between the central axes of the two blind holes 7-1 is small, the blind holes 7-1 are densely distributed, which will reduce the torsional stiffness and strength of the guide rod 7, and the guide rod 7 is easily damaged during operation, and heat exchange medium leakage is likely to occur. At the same time, more blind holes 7-1 not only increase the cost, but also reduce the disassembly and assembly efficiency; in addition, when the number of blind holes 7-1 is an even number, it is convenient to evenly group the blind holes 7-1 for spiral distribution.

[0042] In some embodiments, Figure 6 and Fig. 9 As shown, the blind holes 7-1 are divided into two groups, each group includes three blind holes 7-1 which are spirally distributed with equal spacing around the axial direction of the guide rod 7; the spiral directions of the two groups of blind holes 7-1 are the same, and the two groups of blind holes 7-1 are spaced apart along the circumference of the guide rod 7, and the two groups of blind holes 7-1 are staggered along the axial direction of the guide rod 7.

[0043] like Figure 6As shown, there are two groups of blind holes 7-1, each with three blind holes, which are arranged in a double-screw spiral around the axial direction of the guide rod 7. The spacing between two adjacent blind holes 7-1 in both the axial direction and the circumferential direction is constant, and the spiral directions of the two groups of blind holes 7-1 are the same. Fig. 9 As shown, it is a schematic diagram of the side wall of the guide rod 7 at the blind hole 7-1. Along the circumference of the guide rod 7, two groups of blind holes 7-1 are arranged at intervals, and along the axial direction of the guide rod 7, the two groups of blind holes 7-1 are staggered. In this way, the six blind holes 7-1 are not only relatively evenly distributed on the entire side wall of the guide rod 7, but also relatively evenly distributed on each half-side wall, ensuring the torsional strength and rigidity of the guide rod 7. When the torsion bar 10 applies force to different blind holes 7-1, the force on different parts of the guide rod 7 is more even, avoiding loosening or breakage; the blind hole 7-1 is a weak area of ​​the guide rod 7, Fig. 9 In the figure, a21, a22 and a23 are the spacings between adjacent blind holes 7-1. It can be seen that the blind holes 7-1 are far apart, and the lengths of a21, a22 and a23 are close, so the blind holes 7-1 are evenly stressed and have less mutual influence, and the structural stability of the guide rod 7 is stronger.

[0044] like Figure 8 As shown, the six blind holes 7-1 are not grouped and are spirally distributed on the side wall of the guide rod 7 in the form of a single screw. Similarly, the spacing between two adjacent blind holes 7-1 in both the axial direction and the circumferential direction is a constant. The six blind holes 7-1 in this arrangement are not evenly distributed on the entire side wall of the guide rod 7. For example, there are no blind holes 7-1 in the large areas of the upper left corner and the lower right corner, where the torsional strength and rigidity of the guide rod 7 are very strong, while there are blind holes 7-1 in the large areas of the lower left corner and the upper right corner, where the torsional strength and rigidity of the guide rod 7 are very weak. Therefore, the torsional strength and rigidity are not uniform when viewed from the entire side wall, which is different from the aforementioned double The screw form is prone to loosening or breaking; the six blind holes 7-1 arranged in a single screw are not evenly distributed on the half side wall of the guide rod 7. For example, in the left half side wall in the figure, there is no blind hole 7-1 in the upper half area, where the torsional strength and rigidity of the guide rod 7 are very strong, while there is a blind hole 7-1 in the lower half area, where the torsional strength and rigidity of the guide rod 7 are very weak. Therefore, the torsional strength and rigidity are not uniform when viewed from half of the side wall, and are also prone to loosening or breaking compared to the aforementioned double screw form; in addition, the arrangement of the single screw arrangement blind holes 7-1 is designed with the same overall length and width as the aforementioned double screw arrangement blind holes 7-1, such as Figure 8 As shown, Figure 8 In the figure, a1 is the spacing between adjacent blind holes 7 - 1 . It can be seen that the blind holes 7 - 1 are very close to each other, which is much smaller than the spacing between the blind holes 7 - 1 in the double screw arrangement. Therefore, they have a great influence on each other, so the structural stability of the guide rod 7 is very poor.

[0045] like Fig.10As shown, the blind holes 7-1 are divided into three groups, each with two blind holes, which are spirally distributed on the side wall of the guide rod 7 in the form of three screws. Similarly, the spacing between two adjacent blind holes 7-1 in both the axial direction and the circumferential direction is a constant, and the spiral directions of the three groups of blind holes 7-1 are the same. The six blind holes 7-1 in this arrangement are not particularly evenly distributed on the entire side wall of the guide rod 7. For example, there are no blind holes 7-1 in the upper left corner and the lower right corner, where the torsional strength and stiffness of the guide rod 7 are relatively stronger, while there are blind holes 7-1 in the lower left corner and the upper right corner, where the torsional strength and stiffness of the guide rod 7 are relatively weaker. Therefore, the torsional strength and stiffness are not evenly distributed from the perspective of the entire side wall. The six blind holes 7-1 arranged in a three-screw arrangement are not evenly distributed on the half side wall of the guide rod 7. For example, in the left half side wall in the figure, there is no blind hole 7-1 in the upper area, where the torsional strength and rigidity of the guide rod 7 are relatively stronger, while there is a blind hole 7-1 in the middle and lower area, where the torsional strength and rigidity of the guide rod 7 are relatively weaker. Therefore, the torsional strength and rigidity are not uniform when viewed from half of the side wall, and are also prone to loosening or breaking compared to the aforementioned double-screw form. In addition, the arrangement of the blind holes 7-1 arranged in a three-screw arrangement is designed with the same overall length and width as the blind holes 7-1 arranged in the aforementioned double-screw arrangement, such as Fig.10 As shown, Fig.10 Among them, a31, a32 and a33 are the spacings between adjacent blind holes 7-1. It can be seen that the blind holes 7-1 are not equidistant from each other. The difference in the length values ​​of a31, a32 and a33 is larger than the difference in the blind hole spacings in the double screw arrangement. Therefore, the forces on the blind holes 7-1 are more uneven, and they affect each other more, and the structural stability of the guide rod 7 is poor.

[0046] In summary, the blind holes 7-1 are most evenly distributed using a double-screw arrangement, and the guide rod 7 has the best torsional strength and stiffness.

[0047] In some embodiments, Figure 6 As shown, in each group of the blind holes 7-1, the spacing between two adjacent blind holes 7-1 along the axial direction of the guide rod 7 is a first spacing, and the first spacing is greater than or equal to 2.5 times the aperture of the blind hole 7-1, and less than or equal to 4 times the aperture of the blind hole 7-1.

[0048] like Figure 6As shown, in each group of blind holes 7-1, the spacing between two adjacent blind holes 7-1 along the axial direction of the guide rod 7 is a first spacing, i.e., D1, and the aperture of the blind hole 7-1 is d, and 4d≥D1≥2.5d is set. On the one hand, it is avoided that the first spacing is too large, so that the blind hole 7-1 as a whole is too far away from the fixed clamping plate 4, which will increase the torsional deformation angle and cause tightening problems or fatigue failure; on the other hand, it is avoided that the first spacing is too small, so that a blind hole 7-1 in one group of blind holes will intersect with a blind hole 7-1 in another group of blind holes along the axial direction. From the radial cross-section, this will reduce the torsional strength and stiffness of the guide rod 7.

[0049] In some embodiments, Figure 6 As shown, the distance between two adjacent blind holes 7-1 along the axial direction of the guide rod 7 is D3, D3=1 / 2D1, that is, a blind hole 7-1 in one group of blind holes is located between two adjacent blind holes 7-1 in another group of blind holes, ensuring uniform torsional strength and stiffness. In addition, 2d≥D3≥1.25d.

[0050] In some embodiments, Figure 6 As shown, the blind hole 7 - 1 closest to the fixed pressing plate 4 is the first blind hole 7 - 1 , and the distance between the first blind hole 7 - 1 and the end of the guide rod 7 close to the fixed pressing plate 4 is greater than or equal to 20 mm.

[0051] like Figure 6 As shown, the distance between the blind hole 7-1 closest to the fixed clamping plate 4 and one end of the guide rod 7 is D2, and D2 is set to be ≥ 20 mm, leaving space for the use of the torsion bar 10, which is convenient for operation. On this basis, the smaller D2 is, the better, because for the tightening of the slender guide rod 7, the smaller D2 means that all blind holes 7-1 are set closer to the fixed clamping plate 4, so that the tightening torque becomes smaller during the tightening process, the torsional deformation angle is small, the torsional stress is not easy to reach the yield point of the material, and it is not easy to bend during the tightening process. Therefore, the guide rod 7 is not prone to fatigue and breakage failure or the torsion bar 10 slips during the tightening process, and the tightening safety is high and the stability is good. The upper limit of D2 can be determined according to the yield limit of the material, the elastic modulus, the cross-sectional properties of the part, and the maximum tightening torque.

[0052] In some embodiments, Figure 7 As shown, the depth of the blind hole 7-1 is 1 / 3 to 1 / 2 of the cross-sectional diameter of the guide rod 7, so as to avoid the blind hole 7-1 being too deep, which would reduce the torsional strength and stiffness of the guide rod 7, and also avoid the blind hole 7-1 being too deep, which would make it difficult to apply force with the torsion bar 10 and easily cause the torsion bar 10 to slip.

[0053] In some embodiments, Figure 5 and Figure 6As shown, a stud 7-2 is provided at one end of the guide rod 7, and a threaded hole 7-3 is provided at the other end. The stud 7-2 is threadedly connected to the screw hole 4-1 of the fixed clamping plate 4, and the threaded hole 7-3 is connected to the movable clamping plate 2 through a bolt 2-1.

[0054] like Figure 6 As shown, one end of the guide rod 7 is provided with a stud 7-2, and the other end is provided with a threaded hole 7-3. Figure 5 As shown, the stud 7-2 is threadedly connected to the screw hole 4-1 of the fixed clamping plate 4, and the stud 7-2 and the screw hole 4-1 can be tightly matched by rotating the torsion bar 10; the threaded hole 7-3 is connected and fixed to the movable clamping plate 2 by the bolt 2-1, and a fixing block can be arranged therebetween, so that the heat exchanger is connected as a whole and the vibration resistance is enhanced.

[0055] In some embodiments, Figure 1 and Figure 2 As shown, a plurality of first tie rods 8 are connected between the movable pressing plate 2 and the middle partition plate 3 , and a plurality of second tie rods 9 are connected between the middle partition plate 3 and the fixed pressing plate 4 .

[0056] like Figure 1 As shown, a plurality of first tie rods 8 are connected between the movable clamping plate 2 and the middle partition 3, and a plurality of second tie rods 9 are connected between the middle partition 3 and the fixed clamping plate 4, to ensure that the heat exchange plates 5 on both sides of the middle partition 3 can maintain a good clamping effect when vibration occurs. Tie rods are connected to both sides of the middle partition 3, so that the movable clamping plate 2, the middle partition 3 and the fixed clamping plate 4 are connected as a whole, reducing the risk of the tie rods and guide rods 7 breaking due to vibration, and better avoiding the heat exchange plate 5 and the sealing rubber pad 6 from misalignment and leakage; compared with only setting a tie rod connecting the movable clamping plate 2 and the fixed clamping plate 4, the length of the first tie rod 8 and the second tie rod 9 is shortened, which reduces the difficulty of manufacturing and increases the rigidity.

[0057] In some embodiments, Figure 1 and Figure 2 As shown, along the extension direction of the heat exchange plate 5, the first tie rod 8 and the second tie rod 9 are staggeredly arranged.

[0058] like Figure 1 As shown, the first tie rod 8 and the second tie rod 9 are staggeredly arranged to further even out the force on the middle partition 3 and ensure the structural stability of the heat exchanger. Sealant can be applied to the threaded connection of the guide rod 7 and the tie rod.

[0059] In some embodiments, Figure 3 As shown, the torsion bar 10 includes a rod body 10 - 1 , one end of which is provided with a protrusion 10 - 2 , and the protrusion 10 - 2 is used to be plugged into and matched with the blind hole 7 - 1 to tighten the guide rod 7 and fix the clamping plate 4 .

[0060] like Figure 3 As shown, the torsion bar 10 includes a rod body 10-1 and a protrusion 10-2. The size of the protrusion 10-2 is smaller than that of the rod body 10-1, and cooperates with the blind hole 7-1 to reduce the occupied space.

[0061] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0062] In addition, when details are set forth to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the present application embodiments can be implemented without these details or with changes in these details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0063] While the present application has been described in conjunction with embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.

[0064] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A heat exchanger, characterized in that: It comprises a base and a movable pressing plate, a middle partition plate and a fixed pressing plate stacked in sequence on the base, wherein the fixed pressing plate is arranged close to the base, and multiple layers of heat exchange plates are arranged between the movable pressing plate and the middle partition plate and between the middle partition plate and the fixed pressing plate, and a sealing rubber pad is arranged between two adjacent layers of the heat exchange plates; A cylindrical guide rod is connected between the movable pressing plate and the fixed pressing plate, the guide rod passes through the middle partition plate and is threadedly connected to the fixed pressing plate, the heat exchange plate is provided with an arc-shaped hanging positioning groove, and the hanging positioning groove abuts against the guide rod; a side wall of one end of the guide rod close to the fixed pressing plate is provided with a plurality of blind holes, the blind holes are used to be plugged and matched with the torsion bar to tighten the guide rod and the fixed pressing plate; the number of the blind holes is six, which are distributed at intervals around the axial direction of the guide rod, and the angle between the central axes of two adjacent blind holes is 60° along the circumference of the guide rod; the blind holes are divided into two groups, each group including three blind holes distributed at equal intervals in a spiral around the axial direction of the guide rod; the spiral directions of the two groups of blind holes are the same, and along the circumference of the guide rod, the two groups of blind holes are arranged at intervals, and along the axial direction of the guide rod, the two groups of blind holes are arranged alternately.

2. The heat exchanger according to claim 1, characterized in that In each group of the blind holes, the spacing between two adjacent blind holes along the axial direction of the guide rod is a first spacing, and the first spacing is greater than or equal to 2.5 times the aperture of the blind holes and less than or equal to 4 times the aperture of the blind holes.

3. The heat exchanger according to claim 1, characterized in that The blind hole closest to the fixed pressing plate is a first blind hole, and a distance between the first blind hole and an end of the guide rod close to the fixed pressing plate is greater than or equal to 20 mm.

4. The heat exchanger according to claim 1, characterized in that The depth of the blind hole is 1 / 3 to 1 / 2 of the cross-sectional diameter of the guide rod.

5. The heat exchanger according to claim 1, characterized in that A stud is provided at one end of the guide rod, and a threaded hole is provided at the other end. The stud is threadedly connected to the threaded hole of the fixed pressing plate, and the threaded hole is connected to the movable pressing plate by bolts.

6. The heat exchanger according to claim 1, characterized in that A plurality of first pull rods are connected between the movable pressing plate and the middle partition plate, and a plurality of second pull rods are connected between the middle partition plate and the fixed pressing plate.

7. The heat exchanger according to claim 6, characterized in that Along the extension direction of the heat exchange plate, the first pull rod and the second pull rod are staggeredly arranged.

8. The heat exchanger according to claim 1, characterized in that The torsion rod comprises a rod body, one end of which is provided with a protrusion, and the protrusion is used to be plugged and matched with the blind hole to tighten the guide rod and fix the clamping plate.

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