CN106197094B - A kind of heat exchanger - Google Patents

Abstract

The invention discloses a kind of heat exchangers, there is the abnormity protrusion of guide functions by being arranged between the first aperture and the second aperture, two sides of the fluid on plate can be uniformly distributed, the heat exchange property of the heat exchanger of corresponding raising, the width of heat exchanger can be made to increase, the length-width ratio of plate can be less than or equal to 3.Not only the heat exchange property of heat exchanger is high, but also heat exchanger can be made to realize miniaturization.

Description

A kind of heat exchanger

Technical field

The present invention relates to technical field of heat exchange, in particular to plate heat exchanger.

Background technique

Plate heat exchanger is defined as the heat exchanger that heat transfer element is made of circulation plate, and circulation plate is its core Part, common plate type have: herringbone ripple, horizontal straight ripple, spherical ripple, oblique ripple and vertical ripple etc., wherein V-shape corrugated plate is most widely used.In order to enhance the heat transfer effect of plate heat exchanger, people circulate to it sheet structure progress Continuous research and development and improvement.

Compared to traditional heat exchanger, the structure of plate heat exchanger is extremely compact；Multi-purpose aluminum alloy materials manufacture, very gently Ingeniously；Simultaneously because the high-termal conductivity of circulation plate, so that plate heat exchanger has very high efficiency.Therefore, plate heat exchanger Adaptability is very strong, the heat exchange that can be used between various fluids and the phase-change heat-exchange that collection state variation occurs；Pass through the cloth of runner It sets and combines and can adapt to the different heat-exchanging state such as adverse current, cross-flow, multiple flow and multipass flow；By series, parallel between unit, Series-parallel combination can satisfy the heat exchange needs of large scale equipment.

Currently, plate heat exchanger is widely used in air separation plant, petrochemical industry, refrigeration and low temperature field, automobile and boat The fields such as empty industry.

With the continuous improvement of heat exchanging device requirement, the heat exchange property of plate heat exchanger is also required to further enhance. This requires us to carry out the optimization in structure to plate heat exchanger, and to obtain, passing rate of processing is higher, production cost is lower, changes The stronger plate heat exchanger of hot property.

But it is effective to reduce plate for the non-uniform phenomenon of fluid distrbution in generally existing inner passage in existing plate heat exchanger Heat exchange area, i.e. plate utilization rate are lower.

Therefore, how the problem of fluid distrbution unevenness is that this field is badly in need of solving in effective solution heat exchanger inner passage The technical issues of.

Summary of the invention

In order to solve the above technical problems existing in the prior art, the present invention provides a kind of heat exchangers, can be effective Solution above-mentioned technical problem.

The present invention provides a kind of heat exchanger, including heat exchanger core body, and the heat exchanger core body includes being spaced apart from each other stacking to set Several first flow plates and several second flow plates set, are formed between each first flow plate and the second flow plate It is spaced apart from each other the first circulation passage and the second circulation passage of setting, is set respectively on first flow plate and the second flow plate It is equipped at least two first apertures and at least two second apertures, is changed based on the middle part of first flow plate and the second flow plate Thermal region, at least side in the two side areas up and down in the main heat exchange region of first flow plate and/or the second flow plate It is provided with water conservancy diversion region, the water conservancy diversion region is between two adjacent first apertures and the second aperture, the guiding region Domain is provided at least one abnormity protrusion, is provided with ripple protrusion on the main heat exchange region；The abnormity protrusion and the wave Angle is respectively formed in line protrusion, the angle of the abnormity protrusion is greater than the angle of the ripple protrusion, and the abnormity is convex The angle risen has the offset towards the certain angle of first aperture side relative to the angle of the ripple protrusion；

The length-width ratio of first flow plate and the second flow plate is less than or equal to 3, and is more than or equal to 0.6.

First flow plate and the second flow plate are the plate of the same shape structure, on the heat exchanger core body, institute It states the first flow plate and rotates 180 ° relative to the second flow plate；

The plate includes plate plane and the flange for surrounding plate plane, and first aperture is located at the plate plane Two corners, are respectively formed with the boss for protruding from plate plane certain altitude on the another two corner of the plate plane: first Boss and second boss are formed with the pit for being recessed in plate plane certain distance on the corresponding position of plate reverse side, described Second aperture is formed on the boss；The water conservancy diversion region abnormity protrusion both ends respectively with adjacent first hole The edge of mouth and boss maintains a certain distance d1, and d1 is more than or equal to 1mm；

The ripple protrusion includes a bending section, and the both ends of the abnormity protrusion are located at the two sides of the bending section.

The plate include first area in the middle part of the plate and above and below first area two side areas second Region and third region, wherein the first area is the main heat exchange region, the second area is the water conservancy diversion region；Institute It states and is formed at least one described abnormity protrusion for protruding from the plate plane certain distance on second area, it is corresponding, The pit for being recessed in plate plane certain distance, the height of the abnormity protrusion and institute are formed on the corresponding region of plate reverse side The height for stating first boss is roughly the same.

Using the vertical line on the vertex by the raised angle of abnormity as boundary, the raised angle of abnormity is divided into close to described the The angle a2 of the angle a1 in two apertures and close first aperture, and a2 >=a1, a2≤90.

The second area includes multiple abnormity protrusions, using the vertical line on the vertex by the raised angle of the abnormity as boundary, The raised angle of abnormity is divided into angle a1 close to second aperture and the angle a2 close to first aperture, described different Shape protrusion is smaller closer to the angle of abnormity protrusion described in the first area, on the direction towards the first area, institute Each a1 stated in each abnormity protrusion is identical, and a2 successively decreases.

The third region is also the water conservancy diversion region, is formed at least one on the third region and protrudes from the plate Second abnormity protrusion of plane certain distance, the height substantially phase of the height and the second boss of the second abnormity protrusion Together, the end of the second abnormity protrusion kept respectively with adjacent first aperture and the edge of second boss it is certain away from From.

The angle of the second abnormity protrusion is greater than the angle of the ripple protrusion, and the angle of the second abnormity protrusion Angle relative to the ripple protrusion has the offset towards the certain angle of first aperture side.

Using the vertical line on the angle vertex by the second abnormity protrusion as boundary, the angle of the second abnormity protrusion is divided into Angle a3 close to the second aperture and angle a4 close to first aperture, and angle a4 is more than or equal to angle a3, And 90 °≤a4≤a3+90 °.

The third region includes multiple second abnormity protrusions, and on the direction towards the first area, The angle of angle a3 in each second abnormity protrusion is identical, and the angle of angle a4 is incremented by.

Multiple ripple protrusions for protruding from the plate plane certain distance are formed on the first area, described The corresponding region of plate reverse side is formed with pit, and the ripple protrusion is single font ripple protrusion, the ripple protrusion Height is roughly the same with the height of the boss, and the width d4 of each ripple protrusion is roughly the same；

Two first apertures are located at the same side of the plate, and two second apertures are located at the another of the plate Side.

Heat exchanger provided by the invention, by the way that the abnormity with guide functions is arranged between the first aperture and the second aperture Protrusion, two sides of the fluid on plate can be uniformly distributed, and the heat exchange property of the heat exchanger of corresponding raising can make to exchange heat The width of device increases, and the length-width ratio L/W of plate can be less than or equal to 3.Not only the heat exchange property of heat exchanger is high, but also can make to change Hot device realizes miniaturization.

Detailed description of the invention

Fig. 1 is the schematic perspective view of one embodiment of present invention heat exchanger.

Fig. 2 is the sheet structure schematic diagram in the heat exchanger core body of heat exchanger shown in Fig. 1.

Fig. 3 is a partial schematic diagram of plate shown in Fig. 2.

Fig. 4 is another partial schematic diagram of plate shown in Fig. 2.

Fig. 5 is the another partial schematic diagram of plate shown in Fig. 2.

Fig. 6 is the schematic cross-sectional view after plate shown in two adjacent Fig. 2 assembles at A-A.

Fig. 7 is the fluid flow path schematic diagram on plate shown in Fig. 2.

Fig. 8 is the perspective diagram after the assembling of plate shown in two adjacent Fig. 2.

Specific embodiment

With reference to the accompanying drawings and detailed description, the present invention is specifically described.

Fig. 1 is the stereoscopic schematic diagram of an embodiment of present invention heat exchanger, as shown in Figure 1, in the present embodiment, heat exchanger Including heat exchanger core body 6, end plate 5 and the first extension tube attached 1, the second extension tube attached 2, third extension tube attached 3 and the 4th extension tube attached 4.

Heat exchanger core body 6 includes being spaced apart from each other several first flow plates and several second flow plates being stacked, The first circulation passage and the second circulation passage for being spaced apart from each other setting are formed between each first flow plate and the second flow plate, the It is not connected to mutually between one circulation passage and the second circulation passage.If be spaced apart from each other several first flow plates for being stacked and Dry second flow plate, which is coupled, is formed as heat exchanger core body 6.Further, in order to increase fluid in the first circulation passage and Flow-disturbing performance in second circulation passage, the first flow plate and the second flow plate are using being formed with the recessed of corrugated or dimple shape Male structure.

Further, in order to reduce cost, the first flow plate and the second flow plate are the plate 20 of the same shape structure, are folded When dress, the first flow plate rotates 180 ° of progress closed assemblies relative to the second flow plate.In order to make it easy to understand, below only with plate 20 into Row explanation.

As shown, plate 20 includes plate plane 21 and surrounds the flange 22 of plate plane, plate plane 21 wherein There are two the first apertures 26 for two corners formation, are respectively formed on the another two corner of plate plane 21 and protrude from plate plane 21 The boss of certain altitude: first boss 281 and second boss 282, it is corresponding, it will form on the reverse side of plate 20 recessed In the pit of plate plane certain distance.The second aperture 27 is formed on each boss.Wherein, boss is raised in the side of plate plane 21 The contrary of plate plane 21 is raised in flange 22.Here front will be defined as on one side with boss on plate, it is another Face is then reverse side.

Plate 20 further includes positioned at the second area 24 on about 20 both sides of plate and third region 25 and being located at plate 20 The first area 23 at middle part, wherein second area 24 and third region 25 are between the first aperture 26 and the second aperture 27, and One region 23 is between second area 24 and third region 25.Wherein first area main heat exchange region, the second area and Third region can be guiding region domain.

Multiple ripple protrusions 231 for protruding from 21 certain distance of plate plane are formed on first area 23, it is corresponding, The pit for being recessed in plate plane certain distance is formed on the reverse side of plate 20.Further, ripple protrusion 231 be include one curved The single font ripple protrusion of pars convoluta 232, wherein 231 liang of herringbone row sides of herringbone ripple protrusion form angle Y.It is changed to improve The heat exchange property of hot device, herringbone ripple protrusion 231 extends to the intersection of plate plane 21 Yu flange 22, to make two adjacent panels The heat exchange area formed between piece 20 is larger and enables a fluid to uniform in the flowing of the marginal portion of plate.Each herringbone ripple Protrusion 231 is spaced apart from each other certain distance arrangement, and the plate plane for fluid circulation is formed between each herringbone ripple protrusion 231 21。

Further, the width d4 of each herringbone ripple protrusion 231 on first area 23 is roughly the same, ripple protrusion 231 raised and plate plane 21 height is identical as the height that boss 28 is raised in plate plane 21.

Wherein, it as shown in figure 8, when two adjacent plates are stacked, are formed between adjacent plate 20 and are flowed for fluid Fluid channel, the plate plane and the pit on reverse side that fluid channel includes the first area 23 on 20 front of plate, and the The plate plane contact position of ripple protrusion and 20 reverse side of adjacent plate on one region 23 can be formed with weldering by being welded and fixed Point.

As shown in Figure 3 and Figure 4, be formed on second area 24 at least one protrude from 21 certain distance of plate plane One abnormity protrusion 241, it is corresponding, the pit for being recessed in plate plane certain distance is formed on the another side of plate 20.Into One step, the height for being raised in plate plane 21 and first boss 281 of the first abnormity protrusion 241 are raised in the height of plate plane 21 It is roughly the same.

First abnormity protrusion 241 is located between first aperture 26 and the second aperture 27 of 20 the same side of plate, and first is different Edge of the end of shape protrusion 241 respectively with the first aperture 26 and first boss 281 maintains a certain distance, to make a part Fluid can flow to 281 edge region of first boss under the guidance of the first abnormity protrusion 241 from the first aperture 26.

Specifically, including at least two lug bosses in the first abnormity protrusion 241, wherein each lug boss can be linear type It can be shaped form, each lug boss connects to form the first abnormity protrusion 241.The first abnormity protrusion being made up of each lug boss 241 can be rough by two straight line fittings X in an angle, and it is convex that the angle X of the fitting is defined as the first abnormity here Play 241 angle X.Also, the angle X of the first abnormity protrusion 241 is located on its bending section, and angle X is greater than herringbone ripple Protrusion 231 bending section angle Y, the opening direction of angle X with the opening of angle Y towards roughly the same, and angle X relative to Angle Y has the offset towards the certain angle of 26 side of the first aperture.In this way, enabling the fluid come out in the first aperture 26 more The smooth plate plane domain that 28 adjacent edges of boss are flowed to by the plate plane 21 between each first abnormity protrusion 241, thus The distributing uniformity for improving fluid, improves the heat exchange property of heat exchanger.

Also, the both ends of the first abnormity protrusion 241 are located at the two sides of bending section 232, are more advantageous to guidance in this way Fluid is uniformly distributed.

Further, the angle X of the first abnormity protrusion 241 can be divided into two parts by the vertical line by the vertex angle X, The respectively angle a1 close to the second aperture 27 and angle a2 close to the first aperture, and angle a2 is more than or equal to angle a1, A2 is less than or equal to 90 °.In such manner, it is possible to improve the guide performance of the first abnormity protrusion 241, enable a fluid to smoothly flow to boss 28 edge environs, evenly distribute fluid, improve the heat exchange property of heat exchanger.Further, hanging down by the vertex angle X Line also passes through the vertex of angle Y, further, is located near the centre of plate 20 by the vertical line on the vertex angle X, is made The heat exchange area of heat exchanger is reasonably distributed, and keeps the heat exchange property of heat exchanger preferable.

Further, second area 24 includes at least two first abnormity protrusions 241, and in the first abnormity protrusion 241 Angle it is smaller closer to first area 23.Further, second area 24 includes multiple first special-shaped raised 241, each first The angle of angle a1 in special-shaped protrusion 241 is identical, and on the direction towards first area 23, the angle of angle a2 is successively decreased, and Angle a2 far from first area 23 can be greater than 90 °.

In order to enable through the fluid of second area 24 smoothly and smoothly along 281 edge environ of first boss First area 23 is flowed to, is at least protected between the end of the first abnormity protrusion 241 on 281 edge of first boss and second area 24 Certain distance d1 is held, makes to be formed with the plate plane 21 for fluid flowing between 281 edge of first boss and second area 24, wherein By the minimum range between the end of d1 the first abnormity protrusion 241 being defined as on 281 edge of first boss and second area 24 Value.Further, at least keep certain between the herringbone ripple protrusion 231 on 281 edge of first boss and first area 23 Distance d2 makes to be formed with the plate plane 21 for fluid flowing between 281 edge of first boss and first area 23, wherein d2 is fixed Justice is between the herringbone ripple protrusion 231 adjacent with first boss 281 on 281 edge of first boss and first area 23 Lowest distance value, and d2 >=1mm.Also, by the fluid of second area 24, a part flows directly into first area 23, separately A part flows to first runner 211, so, so that minimum range d1 is greater than minimum range d2, keeps the flowing of fluid smooth, specifically , 1mm≤d2≤d1.In this way, it is formed with a first runner 211 long and narrow, for fluid flowing at 281 edge of first boss, After a part of fluid passes through second area 24, it can be flowed along first runner 211, to make fluid from 26 effluent of the first aperture To 27 side of the second aperture, fluid can be prevented big in 26 effluent amount of the first aperture when flowing between two adjacent plates 20 and the second hole 27 effluent amounts of mouth are small, enable a fluid to more evenly be distributed and flow resistance is smaller, to improve the heat exchange property of heat exchanger.

As shown in figure 5, being formed at least one on third region 25 protrudes from the second different of 21 certain distance of plate plane Shape protrusion 251, it is corresponding, the pit for being recessed in plate plane certain distance is formed on the another side of plate 20.Further , the height for being raised in plate plane 21 of the second abnormity protrusion 251 is roughly the same with the height that boss is raised in plate plane 21.

Second abnormity protrusion 251 is located on plate 20 between first aperture 26 and the second aperture 27 of the same side, and with the One abnormity protrusion 241 is oppositely arranged.When making two adjacent plate closed assemblies, there is intersection between second area 24 and third region 25, make Fluid can flow to the pit of 20 reverse side of adjacent plate from the positive plate plane of a plate 20, or from the recessed of 20 reverse side of a plate Hole flows to the positive plate plane of adjacent plate 20.

And the end of the second abnormity protrusion 251 keeps certain with the first aperture 26 and the edge of second boss 282 respectively Distance, and second abnormity protrusion 251 end be located at the two sides of bending section 232, to make a part of fluid second Under the guidance of special-shaped protrusion 251, the first aperture 26 can be flowed to from the edge of second boss 282.

Specifically, it is also formed with angle Z in the second abnormity protrusion 251, the wherein definition phase of the definition of angle Z and angle X It is similar, no longer it is described in detail.Also, the angle Z of the second abnormity protrusion 251 is greater than herringbone ripple protrusion 231 in the angle of bending section Y, angle Z and the opening direction of angle Y are in substantially opposite setting.In this way, making the plate plane domain of 282 adjacent edges of second boss The fluid to come over can be smoother by it is each second abnormity protrusion 251 between plate plane 21 flow to the first aperture 26, thus The distributing uniformity for improving fluid, improves the heat exchange property of heat exchanger.

Further, the angle Z of the second abnormity protrusion 251 can also be divided into two by the vertical line by the vertex angle Z Point, the respectively angle a3 close to the second aperture 27 and the angle a4 close to the first aperture, and angle a4 is more than or equal to angle A3, and 90 °≤a4≤a3+90 °.In such manner, it is possible to improve the guide performance of the second abnormity protrusion 251, enable a fluid to smoothly The first aperture 26 is flowed to from 282 edge environ of second boss, evenly distributes fluid, to improve the heat-exchange performance of heat exchanger Energy.

Further, third region 25 includes at least two second abnormity protrusions 251, and in the second abnormity protrusion 251 Angle it is smaller closer to first area 23.Further, third region 25 includes multiple second special-shaped raised 251, each second The angle of angle a3 in special-shaped protrusion 251 is identical, and on the direction towards first area 23, the angle of angle a4 is incremented by.

It is similar with second area 24, the end of the second abnormity protrusion 251 on 282 edge of second boss and third region 25 Between at least keep certain distance, the plate for making to be formed between 282 edge of second boss and third region 25 for fluid flowing is flat Face 21.

Further, it is at least kept between the herringbone ripple protrusion 231 on 282 edge of second boss and first area 23 Certain distance d3 makes to be formed with the plate plane 21 for fluid flowing between 282 edge of second boss and first area 23, wherein d3 Between herringbone ripple raised brim adjacent with second boss 282 on 282 edge of second boss and first area 23 most Small distance value.In this way, a second flow channel 212 long and narrow, for fluid flowing is formed at 282 fringe region of second boss, After fluid passes through first area 23, it can be flowed along second flow channel 212, thus make fluid under the water conservancy diversion in third region, from Second aperture, 27 effluent enables a fluid to more evenly be distributed and flow resistance is lower, to improve heat exchanger to 26 side of the first aperture Heat exchange property.

Further, d3 is roughly the same with d2, and 1mm≤d3≤d4.In this way, flowing to fluid from the first aperture of side 26 When the first aperture 26 of the other side, in particular, (referred to as unilateral stream changes when two first apertures 26 are located at the same side of plate 20 Hot device), by the setting of d1, d2 and d3, in the flow process of fluid, the stage especially flowed in and out can be played Preferable guide functions can enable fluid to be uniformly distributed on the both sides of plate, improve the heat exchange property of heat exchanger.

Since fluid more uniform in plate can distribute, the heat exchange property of the heat exchanger of corresponding raising, so Heat exchanger can be made to realize miniaturization.Especially in unilateral stream heat exchanger, due to being provided with the secondth area with guide functions Domain 24 and third region 25, two sides of the fluid on plate can be uniformly distributed, so as to so that the width of heat exchanger increases It still is able to realize that fluid is uniformly distributed on plate, specifically, the length-width ratio L/W of plate can be more than or equal to 0.6 and be less than Equal to 3, wherein the length and width of plate refers to the length and width not comprising 22 part of flange.Here by two first hole on plate Mouth or two second aperture side are defined as the length side of plate, by the first aperture on plate and the second aperture side It is defined as the width side of plate.

As shown in figure 8, being formed with the fluid channel for fluid flowing, plate between adjacent plate 20 when two plate closed assemblies The plate plane of first area 23 on 20 fronts and the dimple-shaped on reverse side become fluid channel, and in the positive of plate 20 The plate plane contact position of ripple protrusion and adjacent plate reverse side on first area 23 is formed with solder joint by being welded and fixed 235.At 235 position of solder joint, fluid can not flow, and solder joint position can play the role of flow-disturbing.

Conventionally, as in herringbone ripple protrusion 231 in the first area of plate 20, there are bending sections 232, when two plates 20 are stacked, the generally existing solder joint 235 at bending section 232 is larger, to cause be bent Fluid flow at portion 232 is less, or even passes through without fluid, so as to cause flow distribution of fluid unevenness, reduces heat exchanger Heat exchange property.

As shown in Figure 6 and Figure 7, in the present embodiment, when the first plate 201 and the second plate 202 are stacked, In first area 23, at least one ripple protrusion 231 on the second plate 202 near bending section 232 not with the first plate 201 At least one wave crest of bending section 232 in plate plane contact on reverse side, that is, the first area 23 of the first plate 201 234 meet with the wave crest 234 of the bending section 232 on the first area 23 of the second plate 202, make the first plate 201 and the second plate At least one third flow channel 236 is formed between bending section on the first area 23 of piece 202.To improve fluid in middle part The mobility of position, prevents from forming biggish solder joint in bending section, evenly distributes fluid more in heat exchanger, improves heat exchanger Heat exchange property.

Further, the wave crest 234 and second of at least 2/3 bending section 232 on the first area 23 of the first plate 201 The wave crest 234 of bending section 232 on the first area 23 of plate 202 meets, at least 1/3 ripple protrusion on the second plate 202 231 can form solder joint with the plate plane contact on 201 reverse side of the first plate near bending section 232.In this way, can either prevent Biggish solder joint is formed about in bending section and leads to the problem of reducing fluid flow area, and fluid can be prevented in bending section The problem of being formed about larger flow improves the flow-disturbing performance in bending section, to improve the heat exchange property of heat exchanger.

The above is only specific embodiments of the present invention, is not intended to limit the present invention in any form.Though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art Member, without departing from the scope of the technical proposal of the invention, all using the disclosure above technology contents to technical solution of the present invention Make many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all without departing from skill of the present invention The content of art scheme, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent variations and repair Decorations, all of which are still within the scope of protection of the technical scheme of the invention.

Claims (10)

1. a kind of heat exchanger, including heat exchanger core body, the heat exchanger core body include be spaced apart from each other be stacked several One flow plate and several second flow plates, are formed between each first flow plate and the second flow plate and are spaced apart from each other setting The first circulation passage and the second circulation passage, be respectively arranged at least two on first flow plate and the second flow plate The middle part of first aperture and at least two second apertures, first flow plate and the second flow plate is main heat exchange area, special Sign is, at least side in the two side areas up and down in the main heat exchange region of first flow plate and/or the second flow plate It is provided with water conservancy diversion region, the water conservancy diversion region is between two adjacent first apertures and the second aperture, the guiding region Domain is provided at least one abnormity protrusion, is provided with ripple protrusion on the main heat exchange region；The abnormity protrusion and the wave Angle is respectively formed in line protrusion, the angle of the abnormity protrusion is greater than the angle of the ripple protrusion, and the abnormity is convex The angle risen has the offset towards the certain angle of first aperture side relative to the angle of the ripple protrusion；

The length-width ratio of first flow plate and the second flow plate is less than or equal to 3, and is more than or equal to 0.6.

2. heat exchanger according to claim 1, which is characterized in that first flow plate and the second flow plate are same shape The plate of shape structure, on the heat exchanger core body, first flow plate rotates 180 ° relative to the second flow plate；

The plate includes plate plane and the flange for surrounding plate plane, and first aperture is located at two of the plate plane Corner is respectively formed with the boss for protruding from plate plane certain altitude: first boss on the another two corner of the plate plane And second boss, it is formed with the pit for being recessed in plate plane certain distance on the corresponding position of plate reverse side, described second Aperture is formed on the boss；The both ends of the abnormity protrusion in the water conservancy diversion region respectively with adjacent first aperture and The edge of boss maintains a certain distance d1, and d1 is more than or equal to 1mm；

The ripple protrusion includes a bending section, and the both ends of the abnormity protrusion are located at the two sides of the bending section.

3. heat exchanger according to claim 2, which is characterized in that the plate includes the first area in the middle part of plate And the second area of two side areas and third region above and below first area, wherein the first area is the main heat exchange Region, the second area are the water conservancy diversion region；It is formed at least one on the second area and protrudes from the plate plane The abnormity protrusion of certain distance, it is corresponding, it is formed on the corresponding region of plate reverse side and is recessed in plate plane one The height of the pit of set a distance, the abnormity protrusion is roughly the same with the height of the first boss.

4. heat exchanger according to claim 3, which is characterized in that pass through the vertical line on the vertex of the raised angle of the abnormity For boundary, the raised angle of abnormity is divided into the angle a1 close to the second aperture and angle a2 close to first aperture, And a2 >=a1, a2≤90.

5. heat exchanger according to claim 3, which is characterized in that the second area includes multiple abnormity protrusions, with logical The vertical line for crossing the vertex of the raised angle of the abnormity is boundary, and the raised angle of abnormity is divided into the angle close to second aperture The angle a2 of a1 and close first aperture, angle of the abnormity protrusion closer to abnormity protrusion described in the first area Smaller, on the direction towards the first area, each a1 in each abnormity protrusion is identical, and a2 successively decreases.

6. according to the described in any item heat exchangers of claim 3 to 5, which is characterized in that the third region is also the water conservancy diversion Region is formed at least one second abnormity protrusion for protruding from the plate plane certain distance on the third region, described The height of second abnormity protrusion is roughly the same with the height of the second boss, the raised end of second abnormity respectively with phase The edge in adjacent first aperture and second boss maintains a certain distance.

7. heat exchanger according to claim 6, which is characterized in that the angle of the second abnormity protrusion is greater than the ripple The angle of protrusion, and the angle of the second abnormity protrusion has relative to the angle of the ripple protrusion towards first hole The offset of the certain angle of mouth side.

8. heat exchanger according to claim 7, which is characterized in that pass through the angle vertex of the second abnormity protrusion Vertical line is boundary, and the angle of the second abnormity protrusion is divided into close to the angle a3 in second aperture and close to first aperture Angle a4, and angle a4 is more than or equal to angle a3, and 90 °≤a4≤a3+90 °.

9. heat exchanger according to claim 8, which is characterized in that the third region includes that multiple second abnormity are convex It rises, and on the direction towards the first area, the angle of the angle a3 in each second abnormity protrusion is identical, angle The angle of a4 is incremented by.

10. heat exchanger according to claim 9, which is characterized in that be formed on the first area and multiple protrude from institute The ripple protrusion for stating plate plane certain distance, is formed with pit, the ripple in the corresponding region of the plate reverse side Protrusion is single font ripple protrusion, and the height of the ripple protrusion is roughly the same with the height of the boss, each ripple The width d4 of protrusion is roughly the same；

Two first apertures are located at the same side of the plate, and two second apertures are located at the other side of the plate.