Reinforcing structure of plate heat exchanger and plate heat exchanger

Abstract

The plate heat exchanger comprises a first pressing plate, a heat exchange plate and a second pressing plate which are arranged in a stacked mode in the thickness direction of the plate heat exchanger, a groove is formed in the second pressing plate, a bolt is fixedly arranged on the outer side of the second pressing plate and in the area corresponding to the groove, and the first pressing plate and the heat exchange plate are connected through a bolt. One end of the bolt extends out of a fixing support of the heat exchange equipment towards the outer side of the second pressing plate, a fixing nut matched with the bolt is arranged on the outer side of the fixing support, and the fixing nut is in threaded connection with the bolt so that the second pressing plate can be fixedly connected with the fixing support. The reinforcing structure further comprises a reinforcing component arranged between the second pressing plate and the fixing support, the reinforcing component is located at the position, corresponding to the bolt, in the area corresponding to the groove, one side of the reinforcing component abuts against the second pressing plate, and the other side of the reinforcing component abuts against the fixing support. According to the scheme, the reinforcing component is arranged between the second pressing plate and the fixing support, and the stability when the plate heat exchanger is connected with the heat exchange equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a reinforcement structure of a plate heat exchanger and a plate heat exchanger. Background Art

[0002] Plate heat exchangers are widely used in fields including heating, ventilation and air conditioning, power industry, textile industry, etc. Because of their advantages such as high heat exchange efficiency, small heat loss, and compact structure, they have become ideal equipment for liquid-liquid heat exchange.

[0003] Generally, a plate heat exchanger needs to be arranged on a fixing plate of a heat exchange device (such as an air conditioner, a floor heating system), and the fixing plate is generally perpendicular to the base of the heat exchange device. However, the installation surface of the plate heat exchanger corresponding to the fixing plate is generally a concave plane, and the concave plane does not contact the fixing plate when the fixing plate and the plate heat exchanger are fixedly installed. Therefore, the gap between the fixing plate and the bottom of the plate heat exchanger will cause deformation when the installation surface of the plate heat exchanger is connected, resulting in poor connection stability between the plate heat exchanger and the fixing plate.

[0004] Therefore, there is a problem of poor connection stability when the plate heat exchanger is connected to the heat exchange device in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem of poor connection stability when the plate heat exchanger is connected to the heat exchange device in the prior art.

[0006] To solve the above problem, an embodiment of the utility model discloses a reinforcement structure of a plate heat exchanger. The plate heat exchanger includes a first pressing plate, heat exchange plates, and a second pressing plate stacked along its thickness direction. The second pressing plate is recessed towards the inner side of the plate heat exchanger to form a groove. Bolts are fixedly arranged in the corresponding area of the groove on the outer side of the second pressing plate. One end of the bolt extends towards the outer side of the second pressing plate and extends out of the fixing bracket of the heat exchange device. A fixing nut adapted to the bolt is arranged on the outer side of the fixing bracket, and the fixing nut is screwed with the bolt to fixedly connect the second pressing plate and the fixing bracket. And, a reinforcing member is further included and is arranged between the second pressing plate and the fixing bracket, in the area corresponding to the groove and at the position corresponding to the bolt. One side of the reinforcing member abuts against the second pressing plate and the other side abuts against the fixing bracket.

[0007] With the above technical solution, by arranging a strengthening member between the second pressing plate and the fixed bracket, since both sides of the strengthening member are respectively in contact with the second pressing plate and the fixed bracket, it can effectively support the second pressing plate and the groove part. The gap between the groove of the second pressing plate and the fixed bracket will be supported by the strengthening member. Therefore, the second pressing plate and the fixed bracket will not be deformed when connected, improving the stability when the plate heat exchanger is connected to the heat exchange equipment. Moreover, only by arranging the strengthening member can the stability of the connection between the plate heat exchanger and the heat exchange equipment be effectively improved, without increasing the structural strength of the second pressing plate or the fixed bracket itself, nor modifying the mold of the second pressing plate or the fixed bracket. The operation is simple and the cost can be effectively reduced.

[0008] According to another specific embodiment of the present invention, for the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present invention, the strengthening member is a support nut arranged in the groove; the support nut is sleeved on the bolt and is screwed and fixed with the bolt, and the two end faces of the support nut are respectively in contact with the outer side of the second pressing plate and the inner side of the fixed bracket. Moreover, the end face of the fixing nut is in contact with the outer side of the fixed bracket.

[0009] With the above technical solution, since the support nut can be installed only by using the bolt for fixing the second pressing plate and the fixed bracket, without additionally arranging a bolt corresponding to the support nut, the integrity of the structure is improved. Moreover, by setting the strengthening member as a support nut, and the support nut is screwed and fixed with the bolt, the connection strength between the second pressing plate and the fixed bracket can be further improved.

[0010] According to another specific embodiment of the present invention, for the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present invention, an elastic washer is further arranged between one end face of the support nut and the second pressing plate, between the other end face of the support nut and the fixed bracket, and / or between the end face of the fixing nut and the fixed bracket; the elastic washer is in a ring structure, sleeved on the bolt, and both sides of the elastic washer are respectively in contact with the corresponding end faces; the radial dimension of the elastic washer is adapted to the radial dimension of the support nut.

[0011] With the above technical solution, by arranging the elastic washer, a force can be provided to the nut after the corresponding support nut and fixing nut are tightened, so as to increase the friction between the nut and the bolt bracket, prevent the bolt from loosening due to vibration during the operation of the plate heat exchanger, and further improve the stability when the plate heat exchanger is connected to the heat exchange equipment. Moreover, the radial dimension of the elastic washer is adapted to the radial dimension of the support nut, which can ensure the protection effect of the elastic washer on the premise of ensuring visual aesthetics.

[0012] According to another specific embodiment of the present utility model, for the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the number of bolts is one, and the bolt is located at the center position of the groove; the number of support nuts is one, and it is located at the center position of the groove corresponding to the bolt.

[0013] Adopting the above technical solution, only one set of bolts and support nuts are provided, which reduces the structural weight and cost, and there is no need to occupy a large installation space. Moreover, setting one set of bolts and support nuts at the center position of the groove can improve the support effect compared with setting them on the periphery of the groove.

[0014] According to another specific embodiment of the present utility model, for the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the number of bolts is at least two, and the number of support nuts is the same as that of the bolts; at least two support nuts are arranged at intervals along the length direction and / or width direction of the groove.

[0015] Adopting the above technical solution, by setting multiple sets of bolts and support nuts, the support stability of the strengthening structure is improved, and further the connection stability and connection strength between the plate heat exchanger and the heat exchange equipment are improved.

[0016] According to another specific embodiment of the present utility model, for the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the number of bolts is one, and the bolt is located at the center position of the groove. Moreover, the strengthening member includes a first support plate arranged at the corresponding position of the bolt in the groove. The first support plate is integrally in a cross-shaped structure, and a threaded hole is provided at the middle position of the first support plate; the bolt passes through the threaded hole of the first support plate and is screwed and fixed with the first support plate; both sides of the first support plate are respectively in contact with the outer side of the second pressing plate and the inner side of the fixed bracket.

[0017] Adopting the above technical solution, by setting the strengthening member as a cross-shaped support plate structure and screwing and fixing the support plate structure with the bolt, there is no need to provide additional fixing bolts for the strengthening member, which saves cost. Moreover, since the cross-shaped plate structure can extend from the middle position of the groove towards the periphery of the groove, the connection stability and strength when the plate heat exchanger is connected to the heat exchange equipment can be improved.

[0018] According to another specific embodiment of the present utility model, the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the strengthening member includes a second support plate disposed in the groove and around the bolt, the second support plate is integrally in a cross-shaped structure, and threaded holes are formed in the middle position of the second support plate and on the second pressing plate; a screw is disposed on the outer side of the fixed bracket, and the screw is integrally in a T-shaped structure; the large end of the screw is fixedly disposed on the outer side of the fixed bracket, and the end surface of the large end abuts against the fixed bracket; the small end of the screw passes through the threaded holes of the fixed bracket and the second support plate and extends into the threaded hole of the second pressing plate; both sides of the second support plate respectively abut against the outer side of the second pressing plate and the inner side of the fixed bracket.

[0019] By adopting the above technical solution, by setting the strengthening member as a cross-shaped support plate structure and arranging the support plate structure around the bolt, it does not affect the original structure of the plate heat exchanger, and the cross-shaped support plate can also be used to improve the connection stability and strength when the plate heat exchanger is connected to the heat exchange equipment, and has higher universality.

[0020] According to another specific embodiment of the present utility model, the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the strengthening member is a support gasket disposed in the groove and around the bolt; both end faces of the support gasket are adhesively fixed to the outer side of the second pressing plate and the inner side of the fixed bracket respectively.

[0021] By adopting the above technical solution, by setting the strengthening member as a support gasket and bonding the support gasket to the second pressing plate and the fixed bracket, the structure and the connection method are both simpler, and it also has higher universality.

[0022] According to another specific embodiment of the present utility model, the strengthening structure of the plate heat exchanger disclosed in the embodiment of the present utility model, the size of the strengthening member in the thickness direction is the same as the size of the groove in the thickness direction; the fixed bracket of the heat exchange equipment includes a connecting plate and a fixing plate, and the connecting plate and the fixing plate are integrally in an L-shaped structure; the connecting plate is fixedly connected to the base of the heat exchange equipment, and the plate heat exchanger is disposed on the base; the fixing plate is perpendicular to the plane where the base is located and is fixedly connected to the connecting plate, and the second pressing plate is fixedly connected to the fixing plate.

[0023] By adopting the above technical solution, the size of the strengthening member in the thickness direction is the same as the size of the groove in the thickness direction, so that there is no gap between the second pressing plate and the fixed bracket at the position where the strengthening member is disposed, ensuring the stability of the support of the strengthening member and also improving the connection stability between the plate heat exchanger and the heat exchange equipment.

[0024] The embodiment of the present utility model discloses a plate heat exchanger, and a strengthening structure of the plate heat exchanger as described in any of the above embodiments is disposed between the plate heat exchanger and the fixed bracket of the heat exchange equipment.

[0025] With the above technical solution, the connection surface between the plate heat exchanger and the heat exchange equipment will not be deformed due to the provision of the strengthening structure, so it has high connection stability.

[0026] The beneficial effects of the present utility model are as follows:

[0027] The strengthening structure of the plate heat exchanger provided by the present utility model, by arranging a strengthening member between the second pressing plate and the fixing bracket, since both sides of the strengthening member are respectively abutted against the second pressing plate and the fixing bracket, can effectively support the second pressing plate and the groove part. When the second pressing plate and the fixing bracket are installed and fixed, the gap between the groove of the second pressing plate and the fixing bracket will be supported by the strengthening member. Therefore, the second pressing plate and the fixing bracket will not be deformed when connected, improving the stability when the plate heat exchanger is connected to the heat exchange equipment. Moreover, only by arranging the strengthening member can the connection stability between the plate heat exchanger and the heat exchange equipment be effectively improved, without increasing the structural strength of the second pressing plate or the fixing bracket itself, nor modifying the mold of the second pressing plate or the fixing bracket. The operation is simple and the cost can be effectively reduced.

[0028] For the plate heat exchanger provided by the present utility model, since a strengthening structure is provided between it and the heat exchange equipment, the connection surface between the plate heat exchanger and the heat exchange equipment will not be deformed, so it has high connection stability. Description of the Drawings

[0029] Figure 1 is an exploded view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model;

[0030] Figure 2 is a schematic structural view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model;

[0031] Figure 3 is a side view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model;

[0032] Figure 4 is a top view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model;

[0033] Figure 5 is another schematic structural view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model;

[0034] Figure 6 is another schematic structural view of the strengthening structure of the plate heat exchanger provided by the embodiment of the present utility model.

[0035] Description of the Reference Numerals:

[0036] 1. Plate heat exchanger; 11. First pressing plate; 12. Heat exchange plate; 13. Second pressing plate; 14. Groove; 2. Fixed bracket; 21. Connecting plate; 22. Fixed plate; 3. Fixed nut; 4. Reinforcing member; 5. Elastic washer; 6. Base; 7. First support plate; A. Thickness direction of the plate heat exchanger; B. Length direction of the groove; C. Width direction of the groove. Detailed implementation mode

[0037] Embodiment 1:

[0038] An embodiment of the present utility model provides a strengthening structure for a plate heat exchanger.

[0039] First, refer to Figure 1 The structure of the plate heat exchanger 1 will be described. The plate heat exchanger 1 includes a first pressing plate 11, a heat exchange plate 12, and a second pressing plate 13 that are stacked along its thickness direction A. The number of heat exchange plates 12 is at least two, and the heat exchange plates 12 are respectively connected and fixed to the first pressing plate 11 and the second pressing plate 13. The specific fixing method can be a fastening bolt passing through the first pressing plate 11, the heat exchange plate 12, and the second pressing plate 13 along the thickness direction A, or other fixing methods can also be selected.

[0040] Moreover, the second pressing plate 13 is recessed towards the inner side of the plate heat exchanger 1 ( Figure 1 the direction from right to left) to form Figure 2 the shown groove 14. A bolt is fixedly arranged in the corresponding area of the outer side of the second pressing plate 13 and the groove 14, and one end of the bolt extends out of the fixed bracket 2 of the heat exchange device towards the outer side of the second pressing plate 13 ( Figure 2 the direction from left to right). And a fixed nut 3 adapted to the bolt is arranged on the outer side of the fixed bracket 2, and the fixed nut 3 is screwed with the bolt to fixedly connect the second pressing plate 13 and the fixed bracket 2.

[0041] Combined with the description in the background technology, it can be known that since the groove 14 is formed on the second pressing plate 13, when the plate heat exchanger 1 and the fixed bracket 2 of the heat exchange device are connected by bolts and fixed nuts 3, the groove 14 on the second pressing plate 13 cannot contact the fixed bracket 2. Therefore, during installation, the gap between the groove 14 of the second pressing plate 13 and the fixed bracket 2 will cause the fixed bracket 2 to deform during installation and fixation, thereby reducing the stability when the plate heat exchanger 1 is connected to the heat exchange device.

[0042] To solve the technical problem of poor connection stability when the plate heat exchanger 1 is connected to the heat exchange equipment in the prior art, the reinforcement structure provided in this embodiment further includes a reinforcement member 4 disposed between the second pressing plate 13 and the fixed bracket 2. The reinforcement member 4 is located in the area corresponding to the groove 14 and at a position corresponding to the bolt. One side of the reinforcement member 4 abuts against the second pressing plate 13, and the other side abuts against the fixed bracket 2. With such a structure, by providing the reinforcement member 4 between the second pressing plate 13 and the fixed bracket 2, since both sides of the reinforcement member 4 abut against the second pressing plate 13 and the fixed bracket 2 respectively, it can effectively support the second pressing plate 13 and the groove 14 part. When the second pressing plate 13 and the fixed bracket 2 are installed and fixed, the gap between the groove 14 of the second pressing plate 13 and the fixed bracket 2 will be supported by the reinforcement member 4. Therefore, the second pressing plate 13 and the fixed bracket 2 will not be deformed during connection, improving the connection stability when the plate heat exchanger 1 is connected to the heat exchange equipment. Moreover, only by setting the reinforcement member 4 can the connection stability between the plate heat exchanger 1 and the heat exchange equipment be effectively improved, without increasing the structural strength of the second pressing plate 13 or the fixed bracket 2 itself, nor modifying the mold of the second pressing plate 13 or the fixed bracket 2. The operation is simple and the cost can be effectively reduced.

[0043] Furthermore, in the reinforcement structure of the plate heat exchanger according to the present invention, referring to Figure 1 , the reinforcement member 4 is a support nut disposed in the groove 14. The support nut is sleeved on the bolt and screwed and fixed with the bolt, and the two end faces of the support nut respectively abut against the outer side of the second pressing plate 13 and the inner side of the fixed bracket 2. The outer side of the second pressing plate 13 is also the Figure 1 right side of the second pressing plate 13 in Figure 1 , and the inner side of the fixed bracket 2 is also the Figure 1 left side of the fixed bracket 2 in Figure 1 . And, the end face of the fixing nut 3 abuts against the outer side of the fixed bracket 2. Specifically, the support nut and the fixing nut 3 are respectively disposed on both sides of the fixed bracket 2 and coaxially connected to the bolt. With such a structure, since the support nut can be installed only by the bolt for fixing the second pressing plate 13 and the fixed bracket 2, without additionally setting a bolt corresponding to the support nut, the integrity of the structure is improved. Moreover, by setting the reinforcement member 4 as a support nut and screwing and fixing the support nut with the bolt, the connection strength between the second pressing plate 13 and the fixed bracket 2 can be further improved.

[0044] Furthermore, in the reinforcement structure of the plate heat exchanger according to the present invention, referring to Figure 1 , an elastic washer 5 is further provided between one end face of the support nut and the second pressing plate 13, between the other end face of the support nut and the fixed bracket 2, and / or between the end face of the fixing nut 3 and the fixed bracket 2. Specifically, the elastic washer 5 can be provided only on one end face of the support nut ( Figure 1between the left end face of the middle reinforcing member 4) and the second pressing plate 13, or it can be only arranged on the other end face of the supporting nut ( Figure 1 the right end face of the middle reinforcing member 4) and the fixed bracket 2, or it can be only arranged between the left end face of the fixed nut 3 and the fixed bracket 2. Of course, the elastic washer 5 can also be arranged at any two of the above three positions, or at all three positions. It should be noted that the elastic washer 5 is specifically a spring washer. By arranging the elastic washer 5, a force can be provided to the nut after the corresponding supporting nut and the fixed nut 3 are tightened, so as to increase the friction between the nut and the bolt bracket, prevent the bolts from loosening due to vibration during the operation of the plate heat exchanger 1, and further improve the stability when the plate heat exchanger 1 is connected to the heat exchange equipment.

[0045] More specifically, the elastic washer 5 is in a ring structure, sleeved on the bolt, and both sides of the elastic washer 5 are respectively attached to the corresponding end faces. The diameter of the inner ring of the elastic washer 5 is adapted to the diameter of the bolt to prevent the elastic washer 5 from moving radially. The corresponding end faces in contact with the elastic washer 5 refer to the one end face of the supporting nut, the other end face of the supporting nut, and the left end face of the fixed nut 3 where the elastic washer 5 is arranged at the above three positions and is in close contact with both sides of the elastic washer 5.

[0046] Furthermore, in the reinforcing structure of the plate heat exchanger according to the present invention, the radial dimension of the elastic washer 5 is adapted to the radial dimension of the supporting nut. That is to say, the radial dimension of the elastic washer 5 is basically equal to the radial dimension of the supporting nut. The elastic washer 5 will not exceed the radial range of the supporting nut, which improves the visual aesthetics, and the service life of the elastic washer 5 is longer under the protection of the supporting nut; and the elastic washer 5 will not be too small, thus ensuring the protection effect of the elastic washer 5.

[0047] Further, in the reinforcing structure of the plate heat exchanger according to the present invention, the number of bolts is one, and the bolt is located at the center position of the groove 14; the number of supporting nuts is one, and it is located at the center position of the groove 14 corresponding to the bolt. With such a structure, only one set of bolts and supporting nuts is arranged, which reduces the structural weight and cost, and does not require a large installation space. And arranging one set of bolts and supporting nuts at the center position of the groove 14 can improve the supporting effect compared with arranging them on the periphery of the groove 14.

[0048] Further, in the reinforcing structure of the plate heat exchanger according to the present invention, referring to Figure 1, the dimension of the reinforcing member 4 in the thickness direction A is the same as that of the groove 14 in the thickness direction A. Therefore, at the position where the reinforcing member 4 is provided, there will be no gap between the second pressing plate 13 and the fixing bracket 2, ensuring the stability of the support of the reinforcing member 4 and also improving the stability of the connection between the plate heat exchanger 1 and the heat exchange equipment.

[0049] Furthermore, in the reinforcing structure of the plate heat exchanger according to the present utility model, referring to Figure 1 , the fixing bracket 2 of the heat exchange equipment includes a connecting plate 21 and a fixing plate 22, and the connecting plate 21 and the fixing plate 22 are integrally in an L-shaped structure. The connecting plate 21 is fixedly connected to the base 6 of the heat exchange equipment, generally by bonding, welding, or screwing. The bottom of the connecting plate 21 is adhesively fixed to the upper surface of the base 6 through structural adhesive, or the corner of the connecting plate 21 is welded to the base 6, or the corner of the connecting plate 21 is screwed to the base 6 through bolts. The plate heat exchanger 1 is disposed on the base 6, and the bottom of the plate heat exchanger 1 abuts against the base 6. The fixing plate 22 is perpendicular to the plane where the base 6 is located and is fixedly connected to the connecting plate 21. Among them, the fixing plate 22 can be integrally formed with the connecting plate 21, or a slot can be provided on the connecting plate 21 to insert the fixing plate 22 into the connecting plate 21 for fixation. The second pressing plate 13 is fixedly connected to the fixing plate 22, specifically by connecting through bolts and fixing nuts 3 as detailed in the foregoing content. The side view of installing the plate heat exchanger 1 on the base 6 of the heat exchange equipment can refer to Figure 3 , and the top view can refer to Figure 4 . It can be seen that the fixing plate 22 is generally provided on the peripheral side of the base 6.

[0050] Next, the assembly process of the reinforcing structure of the plate heat exchanger provided in this embodiment will be described in conjunction with Figure 1 .

[0051] First, the fixing bracket 2 is fixedly connected to the base 6 of the heat exchange equipment. The fixing plate 22 and the connecting plate 21 of the fixing bracket 2 are integrally formed, and the connecting plate 21 is fixed to the base 6 by screws.

[0052] After that, the reinforcing member 4 is sleeved on the bolt extending outwards towards the outside of the second pressing plate 13 and tightened, and the bolt passes through the fixing plate 22.

[0053] Next, an elastic washer 5 is sleeved on the bolt, and a fixing nut 3 is sleeved.

[0054] Finally, the fixing nut 3 is tightened to complete the fixation of the plate heat exchanger 1 and the heat exchange equipment.

[0055] In this embodiment, by providing the reinforcing member 4, two end faces of the reinforcing member 4 are respectively in contact with the second pressing plate 13 and the fixing plate 22 of the fixing bracket 2. Even if a groove 14 is recessed in the second pressing plate 13, due to the supporting effect of the reinforcing member 4, deformation caused by the gap formed by the groove 14 between the second pressing plate 13 and the fixing bracket 2 can be prevented, improving the connection stability. Moreover, by setting the reinforcing member 4 as a supporting nut, the connection strength can also be improved.

[0056] Embodiment 2:

[0057] Based on the reinforcing structure of the plate heat exchanger provided in the foregoing embodiment, this embodiment provides a variant of this reinforcing structure. The difference between this embodiment and Embodiment 1 lies only in the number and arrangement positions of the bolts and the supporting nuts.

[0058] Specifically, in this embodiment, the reinforcing member 4 is still implemented as a supporting nut, and the number of bolts is at least two, and the number of supporting nuts is the same as that of the bolts. For example, two groups, three groups, five groups or even more groups of bolts and supporting nuts can be set. Moreover, at least two supporting nuts are arranged at intervals along the length direction B and / or the width direction C of the groove. That is to say, at least two groups of bolts and supporting nuts can be arranged at intervals only along the length direction B of the groove 14, or only along the width direction C of the groove 14, or bolts and supporting nuts can be arranged in both the length direction B and the width direction C of the groove 14 and arranged at intervals. Preferably, in order to improve the supporting stability, the supporting nuts are preferably arranged at equal intervals.

[0059] Refer to Figure 5 , which shows the case where five groups of bolts and supporting nuts are provided. It can be seen that the five groups of bolts and supporting nuts are arranged at equal intervals along the length direction B and the width direction C of the groove 14 with the center of the groove 14 as the origin.

[0060] In this embodiment, by providing multiple groups of bolts and supporting nuts, the supporting stability of the reinforcing structure is improved, and thus the connection stability and the connection strength between the plate heat exchanger and the heat exchange equipment are improved.

[0061] Embodiment 3:

[0062] Based on the reinforcing structure of the plate heat exchanger provided in the foregoing embodiment, this embodiment provides a variant of this reinforcing structure. The difference between this embodiment and Embodiment 1 lies in the specific implementation manner of the reinforcing member.

[0063] Specifically, in this embodiment, the number of bolts is one, and the bolt is located at the center position of the groove. And refer to Figure 6, the reinforcing member 4 includes a first support plate 7 disposed within the groove 14 at the corresponding position of the bolt. Specifically, the corresponding position of the bolt refers to the middle position of the first support plate 7, which is also the position where the bolt is located.

[0064] More specifically, the first support plate 7 is integrally in a cross-shaped structure, and a threaded hole is provided at the middle position of the first support plate 7. The bolt passes through the threaded hole of the first support plate 7 and is screwed and fixed to the first support plate 7. Both sides of the first support plate 7 are respectively in contact with the outer side of the second pressing plate and the inner side of the fixing bracket.

[0065] In this embodiment, by setting the reinforcing member as a cross-shaped support plate structure and screwing and fixing the support plate structure to the bolt, there is no need to provide an additional fixing bolt for the reinforcing member, which saves costs. Moreover, since the cross-shaped plate structure can extend from the middle position of the groove 14 toward the periphery of the groove 14, the connection stability and strength can be improved when the plate heat exchanger is connected to the heat exchange equipment.

[0066] Embodiment 4:

[0067] Based on the reinforcing structure of the plate heat exchanger provided in the foregoing embodiment, this embodiment provides a variant of this reinforcing structure. The difference between this embodiment and Embodiment 1 lies in the specific implementation manner of the reinforcing member.

[0068] Specifically, in this embodiment, the reinforcing member includes a second support plate disposed on the periphery of the bolt within the groove. That is, in this embodiment, the second support plate is not screwed and fixed to the bolt, but is disposed on the periphery of the bolt.

[0069] Furthermore, the second support plate is integrally in a cross-shaped structure, and threaded holes are provided at the middle position of the second support plate and on the second pressing plate. A screw is provided on the outer side of the fixing bracket, and the screw is integrally in a T-shaped structure; the large end portion of the screw is fixedly disposed on the outer side of the fixing bracket and the end face of the large end portion is in contact with the fixing bracket; the small end portion of the screw passes through the threaded holes of the fixing bracket and the second support plate and extends into the threaded hole of the second pressing plate. After the screw passes through the fixing bracket, the second support plate, and the second pressing plate in sequence and is tightened and fixed, the fixing of the second support plate can be achieved. Both sides of the second support plate are respectively in contact with the outer side of the second pressing plate and the inner side of the fixing bracket to provide support when the fixing bracket and the second pressing plate are installed and fixed.

[0070] In this embodiment, by setting the reinforcing member as a cross-shaped support plate structure and disposing the support plate structure on the periphery of the bolt, it does not affect the original structure of the plate heat exchanger, and the cross-shaped support plate can also be used to improve the connection stability and strength when the plate heat exchanger is connected to the heat exchange equipment, having higher universality.

[0071] Embodiment 5:

[0072] Based on the strengthening structure of the plate heat exchanger provided in the foregoing embodiments, this embodiment provides a variant of this strengthening structure. The difference between this embodiment and Embodiment 1 lies in the specific implementation manner of the strengthening member.

[0073] Specifically, in this embodiment, the strengthening member is a support gasket disposed in the groove and around the bolt. The two end faces of the support gasket are adhesively fixed to the outer side of the second pressing plate and the inner side of the fixed bracket respectively.

[0074] In this embodiment, by setting the strengthening member as a support gasket and adhesively bonding the support gasket to the second pressing plate and the fixed bracket, both the structure and the connection method are simpler, and it also has higher universality.

[0075] Embodiment 6:

[0076] Based on the strengthening structure of the plate heat exchanger provided in the foregoing embodiments, this embodiment provides a plate heat exchanger, and a strengthening structure of the plate heat exchanger described in any of the above implementation manners is provided between the plate heat exchanger and the fixed bracket of the heat exchange device.

[0077] For the plate heat exchanger provided in this embodiment, since a strengthening structure is provided between it and the heat exchange device, the connection surface for connecting the plate heat exchanger and the heat exchange device will not be deformed, and thus it has high connection stability.

[0078] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A reinforcement structure of a plate heat exchanger, characterized in that: The plate heat exchanger comprises a first pressing plate, a heat exchange plate, and a second pressing plate stacked in a thickness direction thereof, the second pressing plate being recessed toward the inner side of the plate heat exchanger to form a groove, a bolt being fixedly arranged on the outer side of the second pressing plate and in an area corresponding to the groove, one end of the bolt extending outward from a fixing bracket of the heat exchange device toward the outer side of the second pressing plate, a fixing nut matched with the bolt being arranged on the outer side of the fixing bracket, the fixing nut being threadedly connected with the bolt to fix the second pressing plate to the fixing bracket; and It also includes a reinforcing member arranged between the second clamping plate and the fixing bracket, wherein the reinforcing member is located in an area corresponding to the groove and at a position corresponding to the bolt, and one side of the reinforcing member abuts against the second clamping plate and the other side abuts against the fixing bracket.

2. The reinforcement structure of the plate heat exchanger according to claim 1, characterized in that: The reinforcing member is a supporting nut disposed in the groove; The support nut is sleeved on the bolt and is threadedly fixed to the bolt, and two end surfaces of the support nut are respectively in contact with the outer side of the second clamping plate and the inner side of the fixing bracket; and The end surface of the fixing nut abuts against the outer side of the fixing bracket.

3. The reinforcement structure of the plate heat exchanger according to claim 2, characterized in that: An elastic washer is further provided between one end surface of the support nut and the second pressing plate, between the other end surface of the support nut and the fixing bracket, and / or between the end surface of the fixing nut and the fixing bracket; The elastic washer is annular and sleeved on the bolt, and two sides of the elastic washer are respectively in contact with corresponding end faces; The radial dimension of the elastic washer is matched with the radial dimension of the supporting nut.

4. The reinforcement structure of the plate heat exchanger according to claim 3, characterized in that: The number of the bolt is one, and the bolt is located at the center of the groove; The number of the supporting nut is one, and the supporting nut is located at the center of the groove corresponding to the bolt.

5. The reinforcement structure of the plate heat exchanger according to claim 3, characterized in that: The number of the bolts is at least two, and the number of the support nuts is the same as the number of the bolts; At least two of the supporting nuts are arranged at intervals along the length direction and / or width direction of the groove.

6. The reinforcement structure of the plate heat exchanger according to claim 1, characterized in that: The number of the bolt is one, and the bolt is located at the center of the groove; and The reinforcing member comprises a first supporting plate arranged in the groove and at a position corresponding to the bolt, the first supporting plate being in a cross-shaped structure as a whole, and a threaded hole being provided in the middle of the first supporting plate; The bolt passes through the threaded hole of the first support plate and is screwed and fixed to the first support plate; Two sides of the first supporting plate are respectively in contact with the outer side of the second pressing plate and the inner side of the fixing bracket.

7. The reinforcement structure of the plate heat exchanger according to claim 1, characterized in that: The reinforcing member comprises a second supporting plate arranged in the groove and around the bolt, the second supporting plate is in a cross-shaped structure as a whole, and threaded holes are provided in the middle of the second supporting plate and on the second clamping plate; The outer side of the fixing bracket is provided with screws, and the screws are in a T-shaped structure as a whole; The large end of the screw is fixedly arranged on the outside of the fixing bracket, and the end surface of the large end is in contact with the fixing bracket; The small end of the screw passes through the threaded holes of the fixing bracket and the second supporting plate, and extends into the threaded hole of the second pressing plate; Two sides of the second supporting plate are respectively in contact with the outer side of the second pressing plate and the inner side of the fixing bracket.

8. The reinforcement structure of the plate heat exchanger according to claim 1, characterized in that: The reinforcing member is a supporting washer disposed in the groove and around the bolt; The two end surfaces of the support gasket are respectively bonded and fixed to the outer side of the second pressing plate and the inner side of the fixing bracket.

9. The reinforcement structure of the plate heat exchanger according to any one of claims 1 to 8, characterized in that: The dimension of the reinforcing member in the thickness direction is the same as the dimension of the groove in the thickness direction; The fixing bracket of the heat exchange device comprises a connecting plate and a fixing plate, and the connecting plate and the fixing plate are in an L-shaped structure as a whole; The connecting plate is fixedly connected to the base of the heat exchange device, and the plate heat exchanger is arranged on the base; The fixing plate is perpendicular to the plane where the base is located and is fixedly connected to the connecting plate, and the second pressing plate is fixedly connected to the fixing plate.

10. A plate heat exchanger, characterized in that: A reinforcement structure of the plate heat exchanger according to any one of claims 1 to 9 is arranged between the plate heat exchanger and the fixing bracket of the heat exchange equipment.

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