CN219347455U - Plate heat exchanger - Google Patents

Abstract

The utility model provides a plate heat exchanger. The plate heat exchanger comprises two end plates, wherein a first flanging structure of each end plate is arranged along the circumferential direction of the end plate body, and one part of the first flanging structure protrudes outwards to form a first lug part or the first lug part is connected with the first flanging structure and is positioned at the outer side of the first flanging structure; the second flanging structures of the heat exchange plates are arranged along the circumferential direction of the heat exchange plate body, and one part of each second flanging structure protrudes outwards to form a second lug part, or the second lug part is connected with the second flanging structure and is positioned at the outer side of the second flanging structure; adjacent first flanging structures and second flanging structures are welded along the thickness direction of the plate heat exchanger, and adjacent two second flanging structures are welded; and two adjacent second lugs and/or two adjacent first lugs and second lugs are welded. The utility model solves the problem that the flatness of the end plate and the heat exchange plate of the plate heat exchanger in the prior art influences the sealing reliability of the plate heat exchanger.

Description

Plate heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a plate heat exchanger.

Background

At present, the brazing type plate heat exchanger is mainly formed by welding an upper end plate, a lower end plate, a heat exchanger plate and an interface, flanges are arranged on the upper end plate, the lower end plate and the heat exchanger plate, the interface, the upper end plate, the heat exchanger plate and the lower end plate are sequentially stacked and pressed by a worker, and then all the flanges are welded to complete the assembly of the brazing type plate heat exchanger.

However, because the sizes of the upper end plate, the lower end plate and the heat exchanger plate are larger, slight deformation is easy to occur in the processing process of the upper end plate, the lower end plate, the heat exchanger plate and adjacent heat exchanger plates, gaps exist at the joint positions of the upper end plate, the lower end plate, the heat exchanger plate and adjacent heat exchanger plates, the upper end plate, the lower end plate, the heat exchanger plates and the adjacent heat exchanger plates are offset in the placement direction of each other in the assembly process, the assembly precision of the plate heat exchanger is affected, the distance of the gaps is further increased, and then the plate heat exchanger is caused to have a liquid leakage phenomenon, so that the normal operation of the plate heat exchanger is affected.

Disclosure of Invention

The utility model mainly aims to provide a plate heat exchanger so as to solve the problem that the flatness of an end plate and a heat exchange plate of the plate heat exchanger influences the sealing reliability of the plate heat exchanger in the prior art.

In order to achieve the above object, the present utility model provides a plate heat exchanger comprising: the two end plates comprise an end plate body, a first flanging structure and a first lug part, wherein the first flanging structure is arranged along the circumferential direction of the end plate body, one part of the first flanging structure protrudes outwards to form the first lug part, or the first lug part is connected with the first flanging structure and is positioned at the outer side of the first flanging structure; the heat exchange plates are arranged between the two end plates, each heat exchange plate comprises a heat exchange plate body, a second flanging structure and a second lug, the second flanging structure is arranged along the circumferential direction of the heat exchange plate body, one part of the second flanging structure protrudes outwards to form the second lug, or the second lug is connected with the second flanging structure and is positioned at the outer side of the second flanging structure; the plate heat exchanger comprises a plate heat exchanger, a first flange structure, a second flange structure, a first flange and a second flange, wherein the adjacent first flange structure and the second flange structure are welded in the thickness direction of the plate heat exchanger; and two adjacent second lugs and/or two adjacent first lugs and second lugs are welded.

Further, the first ear is one; or the plurality of first lugs are arranged at intervals along the circumferential direction of the end plate body; and/or the second ear is one; or the plurality of second lugs are arranged at intervals along the circumferential direction of the heat exchange plate body; the first lugs and the second lugs are arranged in one-to-one correspondence.

Further, each end plate is provided with a first reference surface, and the first reference surface is consistent with the distance between the two first short sides of the end plate; the first lugs are a group, the group of first lugs comprises two first lugs which are oppositely arranged, and the group of first lugs is positioned at one side of the first datum plane; or, the first ears are multiple groups, the multiple groups of first ears are arranged at intervals along the circumferential direction of the end plate, the multiple groups of first ears are symmetrically arranged about the first reference plane, and each group of first ears comprises two oppositely arranged first ears.

Further, each heat exchange plate is provided with a second reference surface, and the distance between the second reference surface and two second short sides of the heat exchange plate is consistent; the second lugs are a group, the group of second lugs comprises two second lugs which are oppositely arranged, and the group of second lugs is positioned at one side of the second datum plane; or, the second ear is the multiunit, multiunit second ear sets up along the circumference interval of heat exchange plate, multiunit second ear sets up about second reference plane symmetry, and each group second ear includes two second ears of relative setting.

Further, when a portion of the first burring structure protrudes to the outside thereof to form a first ear portion, the first ear portion is press-formed from the portion of the first burring structure; and/or, when a part of the second burring structure protrudes to the outside thereof to form the second ear portion, the second ear portion is press-formed from the part of the second burring structure.

Further, the plate thickness of the first lug part is consistent with the plate thickness of the rest part of the first flanging structure; and/or the plate thickness of the second lug part is consistent with the plate thickness of the rest part of the second flanging structure.

Further, the cross section of the first ear part is polygonal, semicircular, semi-elliptical or V-shaped; and/or the cross section of the second ear part is polygonal, semicircular, semi-elliptical or V-shaped.

Further, the width W of the first ear is greater than or equal to 0.3mm, and the length L of the first ear is greater than or equal to 1mm; and/or the width W of the second ear is greater than or equal to 0.3mm, and the length L of the second ear is greater than or equal to 1mm.

Further, the widths of the first and second ears are uniform.

Further, the surface of each first flanging structure facing the heat exchange plate is flush with the surface of the first lug part facing the heat exchange plate; the surface of the second flanging structure facing the end plate is flush with the surface of the second lug part facing the end plate; every two adjacent heat exchange plates comprise a first sub heat exchange plate and a second sub heat exchange plate, and the surface of the second flanging structure arranged on the first sub heat exchange plate, which faces the second sub heat exchange plate, is flush with the surface of the second lug part arranged on the first sub heat exchange plate, which faces the second sub heat exchange plate.

By applying the technical scheme of the utility model, the plate heat exchanger comprises two end plates, the first flanging structures of the end plates are arranged along the circumferential direction of the end plate body, and one part of each first flanging structure protrudes outwards to form the first lug part, or the first lug part is connected with the first flanging structure and is positioned at the outer side of the first flanging structure, so that the forming mode of the first lug part is more flexible and various. A plurality of heat exchange plates are arranged between the two end plates, the second flanging structure of each heat exchange plate is arranged along the circumferential direction of the heat exchange plate body, one part of the second flanging structure protrudes towards the outer side of the second flanging structure to form a second lug, or the second lug is connected with the second flanging structure and is positioned on the outer side of the second flanging structure, so that the forming mode of the second lug is more flexible and various. In this way, in the process of assembling the plate heat exchanger, workers need to weld the adjacent first flanging structure and the second flanging structure, the adjacent two second flanging structures and the adjacent two second lugs and/or the adjacent first lugs and the adjacent second lugs along the thickness direction of the plate heat exchanger, so that the welding area between the end plate and the heat exchange plate and the welding area between the adjacent two heat exchange plates are increased, and the structural strength of the plate heat exchanger is further improved; on the other hand has enlarged the scope of welding position to ensure the planarization of end plate and heat exchanger plate, and then can avoid leading to the plate heat exchanger after the welding is accomplished to appear leaking the liquid phenomenon because the planarization of end plate and heat exchanger plate is lower, solved among the prior art plate heat exchanger's end plate and heat exchanger plate's planarization influence plate heat exchanger's sealing reliability's problem, promoted plate heat exchanger's operating stability and sealing reliability. Meanwhile, in the process of assembling the plate heat exchanger, the arrangement ensures that the end plate and the heat exchange plate are placed correctly in the proper position, so that deviation cannot occur, and the assembly precision between the end plate and the heat exchange plate and between two adjacent heat exchange plates is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic perspective view of a first embodiment of a plate heat exchanger according to the utility model;

fig. 2 shows a schematic view of a plate heat exchanger of fig. 1 in a further angular perspective;

fig. 3 shows a front view of a heat exchanger plate of the plate heat exchanger in fig. 1;

fig. 4 shows a front view of a heat exchanger plate according to a second embodiment of the plate heat exchanger of the utility model;

fig. 5 shows a front view of a heat exchanger plate according to a third embodiment of the plate heat exchanger of the present utility model;

fig. 6 shows a front view of a heat exchanger plate according to a fourth embodiment of the plate heat exchanger of the utility model;

fig. 7 shows a front view of a heat exchanger plate of a fifth embodiment of a plate heat exchanger according to the utility model.

Wherein the above figures include the following reference numerals:

10. an end plate; 11. an end plate body; 12. a first flanging structure; 13. a first ear; 14. a first short side; 20. a heat exchange plate; 21. a heat exchange plate body; 22. a second flanging structure; 23. a second ear; 24. and a second short side.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used generally with respect to the orientation shown in the drawings or to the vertical, vertical or gravitational orientation; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present utility model.

In order to solve the problem that the flatness of the end plate and the heat exchange plate of the plate heat exchanger influences the sealing reliability of the plate heat exchanger in the prior art, the application provides a plate heat exchanger.

Example 1

As shown in fig. 1 to 3, the plate heat exchanger includes two end plates 10 and a plurality of heat exchange plates 20, each end plate 10 includes an end plate body 11, a first burring structure 12, and a first ear portion 13, the first burring structure 12 being provided along a circumferential direction of the end plate body 11, a portion of the first burring structure 12 being bulged outwardly thereof to form the first ear portion 13. The plurality of heat exchange plates 20 are disposed between the two end plates 10, each heat exchange plate 20 includes a heat exchange plate body 21, a second flange structure 22, and a second ear portion 23, the second flange structure 22 is disposed along a circumferential direction of the heat exchange plate body 21, and a portion of the second flange structure 22 protrudes outward to form the second ear portion 23. Wherein, along the thickness direction of the plate heat exchanger, the adjacent first flanging structure 12 and the second flanging structure 22 are welded, and the adjacent two second flanging structures 22 are welded. And two adjacent second ears 23 and two adjacent first ears 13 and second ears 23.

By applying the technical scheme of the embodiment, the plate heat exchanger comprises two end plates 10, the first flanging structure 12 of each end plate 10 is arranged along the circumferential direction of the end plate body 11, and a part of the first flanging structure 12 protrudes towards the outer side of the first flanging structure to form the first lug 13, or the first lug 13 is connected with the first flanging structure 12 and is positioned at the outer side of the first flanging structure 12, so that the forming mode of the first lug 13 is more flexible and various. A plurality of heat exchange plates 20 are arranged between the two end plates 10, the second flanging structure 22 of each heat exchange plate 20 is arranged along the circumferential direction of the heat exchange plate body 21, and a part of the second flanging structure 22 protrudes outwards to form a second lug 23, or the second lug 23 is connected with the second flanging structure 22 and is positioned at the outer side of the second flanging structure 22, so that the forming mode of the second lug 23 is more flexible and various. In this way, in the process of assembling the plate heat exchanger, the worker needs to weld the adjacent first flanging structure 12 and the second flanging structure 22, the adjacent two second flanging structures 22, the adjacent two second lugs 23 and/or the adjacent first lugs 13 and second lugs 23 along the thickness direction of the plate heat exchanger, so that the welding area between the end plate 10 and the heat exchange plate 20 and the welding area between the adjacent two heat exchange plates 20 are increased, and the structural strength of the plate heat exchanger is further improved; on the other hand has enlarged the scope of welding position to ensure the planarization of end plate 10 and heat exchanger plate 20, and then can avoid leading to the plate heat exchanger after the welding to appear leaking the liquid phenomenon owing to the planarization of end plate 10 and heat exchanger plate 20 is lower, and then solved the problem that the planarization of end plate and heat exchanger plate of plate heat exchanger influences plate heat exchanger's seal reliability among the prior art, promoted plate heat exchanger's operating stability and seal reliability. Meanwhile, in the process of assembling the plate heat exchanger, the arrangement ensures that the direction of the end plate 10 and the direction of the heat exchange plates 20 are placed correctly and are positioned at proper positions, so that deviation can not occur, and the assembling precision between the end plate 10 and the heat exchange plates 20 and between two adjacent heat exchange plates 20 is improved.

In the present embodiment, a portion of the first burring 12 projects to the outside thereof to form the first ear portion 13, and a portion of the second burring 22 projects to the outside thereof to form the second ear portion 23. Like this, above-mentioned setting makes first ear 13 and first turn-ups structure 12 structure as an organic whole, second ear 23 and second turn-ups structure 22 structure as an organic whole to promoted the structural strength of first ear 13 and second ear 23, reduced the processing cost of first ear 13 and second ear 23, and then can avoid first ear 13 and second ear 23 to take place to warp and influence end plate 10 and heat exchanger plate 20's planarization in plate heat exchanger's assembly process, further promoted plate heat exchanger's sealing reliability.

In other embodiments not shown in the drawings, only two adjacent second ears are welded therebetween.

In other embodiments not shown in the drawings, only between adjacent first and second ears are welded.

In other embodiments not shown in the drawings, a portion of the first cuff structure projects outwardly thereof to form a first ear, and the second ear is connected to and located outwardly of the second cuff structure.

In other embodiments not shown in the drawings, the first ear is connected to and located outside the first cuff structure, and a portion of the second cuff structure protrudes to the outside thereof to form the second ear.

In other embodiments not shown in the drawings, the first ear is connected with and located outside the first cuff structure and the second ear is connected with and located outside the second cuff structure.

Optionally, the first ear 13 is one; alternatively, the plurality of first lugs 13 are provided, and the plurality of first lugs 13 are arranged at intervals along the circumferential direction of the end plate body 11; and/or the second ear 23 is one; alternatively, the plurality of second lugs 23 are arranged at intervals along the circumferential direction of the heat exchange plate body 21; wherein the plurality of first ears 13 are disposed in one-to-one correspondence with the plurality of second ears 23. Like this, when the staff assembles plate heat exchanger, first ear 13 can with rather than the second ear 23 welding that sets up that corresponds to enlarge the welded range between end plate 10 and the heat exchanger plate 20, and then ensure the planarization of end plate 10 and heat exchanger plate 20, promoted the laminating degree of tightness between the two. Meanwhile, the number of the first lug parts 13 and the second lug parts 23 is more flexible and various due to the arrangement, so that different working conditions and use requirements can be met, and the processing flexibility of staff is improved.

In the present embodiment, there are two first ears 13, and the two first ears 13 are disposed at intervals along the circumferential direction of the end plate body 11. The number of the second lugs 23 is two, and the two second lugs 23 are arranged at intervals along the circumferential direction of the heat exchange plate body 21. In this way, the above arrangement increases the fitting area between the first ear portion 13 and the second ear portion 23 to ensure the flatness of the end plate 10 and the heat exchange plate 20, and further improves the fit tightness between the end plate 10 and the heat exchange plate 20; on the other hand, the welding area between the end plate 10 and the heat exchange plate 20 is increased, and the structural strength of the plate heat exchanger is further improved.

It should be noted that the number of the first ears 13 is not limited thereto, and may be adjusted according to the working condition and the use requirement. Alternatively, the first ear 13 is one, or three, or four, or five, or six, or seven, or more.

It should be noted that the number of the second ears 23 is not limited thereto, and may be adjusted according to the working condition and the use requirement. Alternatively, the first ear 13 is one, or three, or four, or five, or six, or seven, or more.

In this embodiment, when the worker welds the adjacent two heat exchange plates 20, the second lugs 23 on the adjacent two heat exchange plates 20 cooperate with each other to ensure the degree of tightness of the fit between the adjacent two heat exchange plates 20. Simultaneously, two second lugs 23 on the heat exchange plates 20 can increase the welding area between two adjacent heat exchange plates 20 to promote the structural strength of the plate heat exchanger.

Optionally, each end plate 10 has a first reference surface that coincides with the distance between the two first short sides 14 of the end plate 10. The first ears 13 are a group, the group of first ears 13 comprises two first ears 13 which are oppositely arranged, and the group of first ears 13 are positioned at one side of the first reference surface; alternatively, the first ears 13 are multiple groups, the multiple groups of first ears 13 are arranged at intervals along the circumferential direction of the end plate 10, the multiple groups of first ears 13 are symmetrically arranged about the first reference plane, and each group of first ears 13 includes two first ears 13 arranged oppositely. Like this, when first ear 13 is a set of, end plate 10 is asymmetric structure, and the structure of a set of first ear 13 messenger end plate 10 is simpler, easy processing, realization, and then has reduced staff's the processing degree of difficulty. Meanwhile, the arrangement mode of the first lug 13 is more flexible and various due to the arrangement mode, so that different working conditions and use requirements can be met, and the processing flexibility of staff is improved.

In this embodiment, the first ears 13 are a set, and the first ears 13 are located on the upper side of the first reference surface.

It should be noted that the number of the first ears 13 is not limited thereto, and may be adjusted according to the working conditions and the use requirements. Alternatively, the first ears 13 are two, or three, or four, or five, or six, or seven, or more groups.

Optionally, each heat exchanger plate 20 has a second reference surface which coincides with the distance between the two second short sides 24 of the heat exchanger plate 20. The second ears 23 are a group, the group of second ears 23 comprises two second ears 23 which are arranged oppositely, and the group of second ears 23 is positioned at one side of the second reference surface; alternatively, the second lugs 23 are multiple groups, the multiple groups of second lugs 23 are arranged at intervals along the circumferential direction of the heat exchange plate 20, the multiple groups of second lugs 23 are symmetrically arranged about the second reference plane, and each group of second lugs 23 comprises two second lugs 23 which are oppositely arranged. Like this, when second ear 23 is a set of, heat exchange plate 20 is asymmetric structure, and a set of second ear 23 makes heat exchange plate 20's structure simpler, easy processing, realization, and then has reduced staff's the processing degree of difficulty. Meanwhile, the arrangement mode of the second lug 23 is more flexible and various due to the arrangement mode, so that different working conditions and use requirements can be met, and the processing flexibility of staff is improved.

In the present embodiment, the second ears 23 are a set, and the set of second ears 23 is located on the upper side of the second reference surface.

It should be noted that the number of the second ears 23 is not limited thereto, and may be adjusted according to the working conditions and the use requirements. Alternatively, the second ears 23 are two, or three, or four, or five, or six, or seven, or more groups.

Alternatively, when a portion of the first burring structure 12 protrudes to the outside thereof to form the first ear portion 13, the first ear portion 13 is press-formed from the portion of the first burring structure 12; and/or, when a portion of the second burring structure 22 protrudes to the outside thereof to form the second ear portion 23, the second ear portion 23 is press-formed from the portion of the second burring structure 22. Like this, above-mentioned setting makes the mode of formation of first ear 13 and second ear 23 simpler, and easy processing, realization, and then reduced staff's the processing degree of difficulty and the processing cost of first ear 13, second ear 23.

In this embodiment, the first ear portion 13 is formed by stamping a portion of the first flange structure 12 protruding towards the outside thereof, and the second ear portion 23 is formed by stamping a portion of the second flange structure 22 protruding towards the outside thereof, so that not only is the processing cost of the first ear portion 13 and the second ear portion 23 reduced, but also the overall structural strength of the plate heat exchanger is improved, and the service life of the plate heat exchanger is prolonged.

Alternatively, the plate thickness of the first ear portion 13 coincides with the plate thickness of the remaining portion of the first burring structure 12; and/or the second ear portion 23 has a plate thickness that corresponds to the plate thickness of the remaining portion of the second burring structure 22. Thus, the above arrangement can promote the structural strength of the first and second ears 13 and 23 to avoid the deformation thereof during the assembly process due to the smaller plate thicknesses of the first and second ears 13 and 23, thereby improving the structural reliability of the first and second ears 13 and 23.

In the present embodiment, the plate thickness of the first ear portion 13 coincides with the plate thickness of the remaining portion of the first burring 12, and the plate thickness of the second ear portion 23 coincides with the plate thickness of the remaining portion of the second burring 22.

Alternatively, the cross section of the first ear portion 13 is polygonal, or semicircular, or semi-elliptical, or V-shaped; and/or the cross section of the second ear 23 is polygonal, or semi-circular, or semi-elliptical, or V-shaped. Like this, above-mentioned setting makes the shape of first ear 13 and second ear 23 more nimble, various to adapt to different operating modes and user demand, also promoted staff's processing flexibility.

In this embodiment, the first ear 13 is rectangular in cross section.

It should be noted that the shape of the first ear portion 13 is not limited thereto, and may be adjusted according to the working condition and the use requirement. Alternatively, the first ear 13 is semi-circular, or semi-elliptical, or V-shaped.

In this embodiment, the second ear 23 is rectangular in cross-section.

It should be noted that the shape of the second ear portion 23 is not limited thereto, and may be adjusted according to the working condition and the use requirement. Alternatively, the second ear 23 is semi-circular, or semi-elliptical, or V-shaped.

The cross sections of the first ear portion 13 and the second ear portion 23 are perpendicular to the thickness direction of the plate heat exchanger.

Alternatively, the width W of the first ear 13 is greater than or equal to 0.3mm, and the length L of the first ear 13 is greater than or equal to 1mm; and/or the width W of the second ear 23 is greater than or equal to 0.3mm and the length L of the second ear 23 is greater than or equal to 1mm. In this way, the above arrangement makes the dimensions of the first ear portion 13 and the second ear portion 23 more suitable, on the one hand, ensuring the normal implementation of the functions of the two to promote the sealing reliability of the plate heat exchanger; on the other hand, the processing difficulty of the two materials is avoided from being too large due to undersize.

In the present embodiment, the width W of the first ear 13 is 0.3mm, and the length L of the first ear 13 is 1mm.

It should be noted that, the value of the width W of the first ear portion 13 is not limited thereto, and may be adjusted according to the working condition and the use requirement. Alternatively, the width W of the first ear 13 is 0.4mm, or 0.5mm, or 0.6mm, or 0.7mm, or 0.8mm.

It should be noted that, the length L of the first ear portion 13 is not limited to this, and may be adjusted according to the working condition and the use requirement. Alternatively, the length L of the first ear 13 is 1.3mm, or 1.5mm, or 1.7mm, or 1.9mm, or 2.1mm.

In the present embodiment, the width W of the second ear 23 is 0.3mm, and the length L of the second ear 23 is 1mm.

It should be noted that, the width W of the second ear 23 is not limited to this, and may be adjusted according to the working condition and the use requirement. Alternatively, the width W of the second ear 23 is 0.4mm, or 0.5mm, or 0.6mm, or 0.7mm, or 0.8mm.

It should be noted that, the length L of the second ear portion 23 is not limited to this, and may be adjusted according to the working condition and the use requirement. Alternatively, the length L of the second ear 23 is 1.3mm, or 1.5mm, or 1.7mm, or 1.9mm, or 2.1mm.

As shown in fig. 1 to 3, the width of each first ear portion 13 and each second ear portion 23 is uniform. Thus, after the plate heat exchanger is assembled, the edges of the first lug 13 and the edges of the second lug 23 are positioned in the same plane, so that the plate heat exchanger has more attractive and tidy appearance.

In the present embodiment, the surface of each first flange structure 12 facing the heat exchanger plate 20 is flush with the surface of the first ear portion 13 facing the heat exchanger plate 20. The surface of the second flange structure 22 facing the end plate 10 is flush with the surface of the second ear 23 facing the end plate 10. Each two adjacent heat exchange plates 20 comprise a first sub heat exchange plate and a second sub heat exchange plate, and the surface of the second flanging structure 22 arranged on the first sub heat exchange plate facing the second sub heat exchange plate is flush with the surface of the second lug 23 arranged on the first sub heat exchange plate facing the second sub heat exchange plate. In this way, the above arrangement can ensure that the end plate 10 and the heat exchange plate 20 in the plate heat exchanger after assembly and two adjacent heat exchange plates 20 can be tightly attached to each other, so as to further improve the sealing reliability of the plate heat exchanger.

Specifically, when the surface of the first flange structure 12 facing the heat exchange plate 20 is closely adhered to the second flange structure 22, the surface of the first ear portion 13 facing the heat exchange plate 20 is closely adhered to the second ear portion 23. When the surface of the second flanging structure 22 facing the heat exchange plate 20 is tightly adhered to the first flanging structure 12, the surface of the second lug 23 facing the heat exchange plate 20 is tightly adhered to the first lug 13. When the surface of the second flanging structure 22 arranged on the first sub heat exchange plate facing the second sub heat exchange plate is tightly attached to the second flanging structure 22 arranged on the second sub heat exchange plate, the surface of the second lug 23 arranged on the first sub heat exchange plate facing the second sub heat exchange plate is tightly attached to the second lug 23 arranged on the second sub heat exchange plate. Therefore, the flange structures and the lugs can be tightly attached to each other, so that the sealing reliability of the plate heat exchanger is further improved.

Example two

The plate heat exchanger in the second embodiment differs from the first embodiment in that: the first and second ears 13, 23 are arranged differently.

In this embodiment, the first ears 13 are two groups, the two groups of first ears 13 are disposed at intervals along the circumferential direction of the end plate 10, the two groups of first ears 13 are symmetrically disposed about the first reference plane, and each group of first ears 13 includes two oppositely disposed first ears 13. In this way, the above arrangement is such that the end plate 10 is provided with the first ear portions 13 on both sides of the first reference surface to further secure the flatness of the end plate 10. Meanwhile, the arrangement enables the number of the arrangement groups of the first lug 13 to be more flexible and various so as to adapt to different working conditions and use requirements, and the processing flexibility of staff is improved.

As shown in fig. 4, the second ears 23 are two groups, the two groups of second ears 23 are arranged at intervals along the circumferential direction of the heat exchange plate 20, the two groups of second ears 23 are symmetrically arranged about the second reference plane, and each group of second ears 23 includes two oppositely arranged second ears 23. In this way, the above arrangement is such that the heat exchange plate 20 is provided with the second ears 23 on both sides of the first reference surface to further secure the flatness of the heat exchange plate 20. Meanwhile, the arrangement enables the number of the second lug 23 to be more flexible and various, so as to adapt to different working conditions and use requirements, and the processing flexibility of staff is improved.

Example III

The plate heat exchanger in the third embodiment differs from the second embodiment in that: the number of sets of the first ear portion 13 and the second ear portion 23 is different.

In the present embodiment, the first ears 13 are eleven groups, the eleven groups of first ears 13 are disposed at intervals along the circumferential direction of the end plate 10, the eleven groups of first ears 13 are disposed symmetrically about the first reference plane, and each group of first ears 13 includes two oppositely disposed first ears 13. In this way, the above arrangement increases the fitting area of the first and second ears 13, 23 to further secure the flatness of the end plate 10. Meanwhile, the arrangement enables the number of the arrangement groups of the first lug 13 to be more flexible and various so as to adapt to different working conditions and use requirements, and the processing flexibility of staff is improved.

As shown in fig. 5, the second ears 23 are eleven groups, the eleven groups of second ears 23 are disposed at intervals along the circumferential direction of the heat exchange plate 20, the eleven groups of second ears 23 are disposed symmetrically about the second reference plane, and each group of second ears 23 includes two oppositely disposed second ears 23. In this way, the above arrangement increases the fitting area of the second ear portion 23 and the first ear portion 13 to further secure the flatness of the heat exchange plate 20. Meanwhile, the arrangement enables the number of the second lug 23 to be more flexible and various, so as to adapt to different working conditions and use requirements, and the processing flexibility of staff is improved.

Example IV

The plate heat exchanger in the fourth embodiment differs from the first embodiment in that: the first ear 13 and the second ear 23 are shaped differently.

As shown in fig. 6, the first ear portion 13 has a trapezoidal cross section, and the second ear portion 23 has a trapezoidal cross section. Like this, above-mentioned setting makes the shape of first ear 13 and second ear 23 more nimble, various to adapt to different operating modes and user demand, also promoted staff's processing flexibility.

Example five

The plate heat exchanger in embodiment five differs from embodiment one in that: the first ear 13 and the second ear 23 are shaped differently.

As shown in fig. 7, the first ear portion 13 has a semicircular cross section, and the second ear portion 23 has a semicircular cross section. Like this, above-mentioned setting makes the shape of first ear 13 and second ear 23 more nimble, various to adapt to different operating modes and user demand, also promoted staff's processing flexibility.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the plate heat exchanger includes two end plates, and the first turn-ups structure of each end plate sets up along the circumference of end plate body, and a part of first turn-ups structure is protruding in order to form first ear in its outside, or, and first ear is connected and is located the outside of first turn-ups structure with first turn-ups structure to make the mode of formation of first ear more nimble, various. A plurality of heat exchange plates are arranged between the two end plates, the second flanging structure of each heat exchange plate is arranged along the circumferential direction of the heat exchange plate body, one part of the second flanging structure protrudes towards the outer side of the second flanging structure to form a second lug, or the second lug is connected with the second flanging structure and is positioned on the outer side of the second flanging structure, so that the forming mode of the second lug is more flexible and various. In this way, in the process of assembling the plate heat exchanger, workers need to weld the adjacent first flanging structure and the second flanging structure, the adjacent two second flanging structures and the adjacent two second lugs and/or the adjacent first lugs and the adjacent second lugs along the thickness direction of the plate heat exchanger, so that the welding area between the end plate and the heat exchange plate and the welding area between the adjacent two heat exchange plates are increased, and the structural strength of the plate heat exchanger is further improved; on the other hand has enlarged the scope of welding position to ensure the planarization of end plate and heat exchanger plate, and then can avoid leading to the plate heat exchanger after the welding is accomplished to appear leaking the liquid phenomenon because the planarization of end plate and heat exchanger plate is lower, solved among the prior art plate heat exchanger's end plate and heat exchanger plate's planarization influence plate heat exchanger's sealing reliability's problem, promoted plate heat exchanger's operating stability and sealing reliability. Meanwhile, in the process of assembling the plate heat exchanger, the arrangement ensures that the end plate and the heat exchange plate are placed correctly in the proper position, so that deviation cannot occur, and the assembly precision between the end plate and the heat exchange plate and between two adjacent heat exchange plates is improved.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A plate heat exchanger, comprising:

two end plates (10), each end plate (10) comprises an end plate body (11), a first flanging structure (12) and a first lug (13), the first flanging structure (12) is arranged along the circumferential direction of the end plate body (11), a part of the first flanging structure (12) protrudes outwards to form the first lug (13), or the first lug (13) is connected with the first flanging structure (12) and is positioned outside the first flanging structure (12);

the heat exchange plates (20) are arranged between the two end plates (10), each heat exchange plate (20) comprises a heat exchange plate body (21), a second flanging structure (22) and a second lug (23), the second flanging structure (22) is arranged along the circumferential direction of the heat exchange plate body (21), a part of the second flanging structure (22) protrudes outwards to form the second lug (23), or the second lug (23) is connected with the second flanging structure (22) and is positioned at the outer side of the second flanging structure (22);

wherein, along the thickness direction of the plate heat exchanger, the adjacent first flanging structure (12) and the adjacent second flanging structure (22) are welded, and the adjacent two second flanging structures (22) are welded; and two adjacent second lugs (23) and/or two adjacent first lugs (13) and second lugs (23) are welded.

2. A plate heat exchanger according to claim 1, wherein the first ear (13) is one; or,

the plurality of first lugs (13) are arranged at intervals along the circumferential direction of the end plate body (11); and/or, the second ear (23) is one; alternatively, a plurality of the second lugs (23) are arranged at intervals along the circumferential direction of the heat exchange plate body (21); wherein a plurality of the first lugs (13) and a plurality of the second lugs (23) are arranged in one-to-one correspondence.

3. A plate heat exchanger according to claim 1, wherein each end plate (10) has a first reference surface which coincides with the distance between two first short sides (14) of the end plate (10);

the first lugs (13) are a group, the group of first lugs (13) comprises two oppositely arranged first lugs (13), and the group of first lugs (13) are positioned on one side of the first datum plane; or,

the first lugs (13) are multiple groups, the multiple groups of first lugs (13) are arranged at intervals along the circumferential direction of the end plate (10), the multiple groups of first lugs (13) are symmetrically arranged relative to the first reference surface, and each group of first lugs (13) comprises two oppositely arranged first lugs (13).

4. A plate heat exchanger according to claim 1, wherein each heat exchanger plate (20) has a second reference surface, which coincides with the distance between two second short sides (24) of the heat exchanger plate (20);

the second lugs (23) are a group, the group of second lugs (23) comprises two second lugs (23) which are oppositely arranged, and the group of second lugs (23) are positioned on one side of the second datum plane; or,

the second lugs (23) are multiple groups, the multiple groups of second lugs (23) are arranged at intervals along the circumferential direction of the heat exchange plate (20), the multiple groups of second lugs (23) are symmetrically arranged relative to the second reference surface, and each group of second lugs (23) comprises two oppositely arranged second lugs (23).

5. A plate heat exchanger according to claim 1, wherein the first ear (13) is stamped from a part of the first flange structure (12) when this part of the first flange structure (12) protrudes outwards to form the first ear (13); and/or, when a portion of the second burring structure (22) protrudes to the outside thereof to form the second ear portion (23), the second ear portion (23) is press-formed from the portion of the second burring structure (22).

6. A plate heat exchanger according to claim 5, wherein the plate thickness of the first ear (13) corresponds to the plate thickness of the rest of the first flange structure (12); and/or the plate thickness of the second lug part (23) is consistent with the plate thickness of the rest part of the second flanging structure (22).

7. A plate heat exchanger according to claim 1, wherein the cross-section of the first ear (13) is polygonal, or semi-circular, or semi-elliptical, or V-shaped; and/or the cross section of the second ear part (23) is polygonal, semicircular, semi-elliptical or V-shaped.

8. A plate heat exchanger according to claim 1, wherein,

the width W of the first ear part (13) is larger than or equal to 0.3mm, and the length L of the first ear part (13) is larger than or equal to 1mm; and/or the number of the groups of groups,

the width W of the second ear (23) is greater than or equal to 0.3mm, and the length L of the second ear (23) is greater than or equal to 1mm.

9. A plate heat exchanger according to claim 1, wherein each of the first ear portions (13) and each of the second ear portions (23) are of uniform width.

10. A plate heat exchanger according to claim 1, wherein,

the surface of each first flanging structure (12) facing the heat exchange plate (20) is flush with the surface of the first lug (13) facing the heat exchange plate (20);

the surface of the second flanging structure (22) facing the end plate (10) is flush with the surface of the second ear (23) facing the end plate (10);

every two adjacent heat exchange plates (20) comprise a first sub heat exchange plate and a second sub heat exchange plate, and the surface of a second flanging structure (22) arranged on the first sub heat exchange plate, which faces towards the second sub heat exchange plate, is flush with the surface of a second lug (23) arranged on the first sub heat exchange plate, which faces towards the second sub heat exchange plate.

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