CN218566255U - Heat exchange plate, heat exchange plate pair and heat exchanger - Google Patents

Abstract

The application provides a heat transfer board, heat transfer board are to reaching the heat exchanger, and the heat transfer board includes: a plate body including a heat exchange region; along the length direction of the plate body, a plurality of staggered baffling parts are arranged on the plate body at intervals so as to divide the heat exchange area into a plurality of sub heat exchange areas; one end of the baffling part is connected with one long edge of the plate body along the width direction of the plate body, and the other end of the baffling part is arranged at intervals with the other long edge of the plate body so as to communicate the adjacent sub heat exchange areas; the long limit of plate body is equipped with first fluid passage connector and second fluid passage connector, and first fluid passage connector and second fluid passage connector communicate with corresponding sub heat transfer region respectively, and along the direction of first fluid passage connector to second fluid passage connector, the width in a plurality of sub heat transfer regions is the descending trend, and the interval on a plurality of baffling portions and plate body long limit is the descending trend. The application provides a heat transfer board, heat transfer board to reaching heat exchanger simple structure, convenient to use can the velocity of flow of balanced fluid in the heat exchanger, ensures the heat transfer effect, improves heat exchanger life.

Description

Heat exchange plate, heat exchange plate pair and heat exchanger

Technical Field

The application relates to the technical field of plate heat exchangers, in particular to a heat exchange plate, a heat exchange plate pair and a heat exchanger.

Background

The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied. Be applied to plate heat exchanger that condensation operating mode used, the fluid state of its import department is gaseous state or gas-liquid mixture usually, through the condensation of heat exchanger, the fluid state of exit is gas-liquid mixture or liquid generally, the volume can significantly reduce, and the inside runner sectional area of heat exchanger of current condensation operating mode equals, this just leads to the fluid at the in-process of condensation, in order to fill the runner, the velocity of flow can constantly reduce, thereby make the heat transfer effect worsen, some heat exchangers can reduce the pipe diameter in exit, improve the fluid velocity of flow of export, but can not balance the velocity of flow change of fluid in the heat exchanger is inside, can reduce the heat transfer effect equally.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present application is to provide a heat exchange plate, a heat exchange plate pair and a heat exchanger, so as to solve the related problems mentioned in the background art.

In a first aspect of the application, a heat exchanger plate is provided, comprising: a plate body including a heat exchange region; along the length direction of the plate body, a plurality of staggered baffling parts are arranged on the plate body at intervals so as to divide the heat exchange area into a plurality of sub heat exchange areas; one end of the baffling part is connected with one long edge of the plate body along the width direction of the plate body, and the other end of the baffling part is arranged at intervals with the other long edge of the plate body so as to communicate the adjacent sub heat exchange areas; the long limit of plate body is equipped with first fluid passage connector and second fluid passage connector, first fluid passage connector with the second fluid passage connector respectively with corresponding the regional intercommunication of sub heat transfer, follow first fluid passage connector extremely the direction of second fluid passage connector is a plurality of the regional width of sub heat transfer is the descent trend, and is a plurality of baffling portion with the interval on the long limit of plate body is the descent trend.

Furthermore, along the direction from the first flow channel connecting port to the second flow channel connecting port, the width of each sub heat exchange area is gradually decreased, and the distance between each baffle part and the long edge of the plate body is gradually decreased.

Furthermore, the number of the sub heat exchange areas is more than or equal to six, the widths of two or three adjacent sub heat exchange areas positioned in the middle of the plate body are equal, and the distances between two or three adjacent baffling parts positioned in the middle of the plate body and the long edges of the plate body are equal.

Furthermore, along the direction from the first flow channel connecting port to the second flow channel connecting port, the first sub heat exchange area behind the deflection part is a first area, and the distance between the deflection part and the long edge of the plate body is 0.5 to 2 times of the width of the first area corresponding to the deflection part.

In a second aspect of the present application, a heat exchange plate pair is provided, which includes two heat exchange plates as described in the first aspect, where the structures of the two heat exchange plates are mirror images of each other; the four sides of the two heat exchange plates are abutted, the baffling parts of the two heat exchange plates are abutted, and the sub heat exchange areas of the two heat exchange plates are connected to form a heat exchange flow channel; the first flow channel connectors of the two heat exchange plates are connected to form a flow channel inlet, and the second flow channel connectors of the two heat exchange plates are connected to form a flow channel outlet.

Furthermore, a plurality of bulges are arranged in the heat exchange areas, the heat exchange areas of the two heat exchange plates are butted to form a plurality of contact points, the contact points are arranged in an array, and the distance between every two adjacent contact points is 20mm to 50mm.

Furthermore, the contact points of two adjacent columns are arranged in a staggered mode, and the staggered length is equal to 1/2 of the distance between two adjacent contact points in the same column.

Furthermore, the sectional area of the runner inlet is larger than or equal to that of the runner outlet, and the maximum depth of the heat exchange runner is 5mm to 10mm.

Furthermore, four sides of the two heat exchange plates are connected through welding, a welding bead is formed at the joint, and the distance between the welding bead and the edge of the plate body is smaller than or equal to 20mm.

In a third aspect of the present application, there is provided a heat exchanger comprising a plurality of stacked pairs of heat exchanger plates as described in the second aspect above.

As can be seen from the above, the heat exchange plate pair and the heat exchanger provided by the application divide the heat exchange area into a plurality of sub heat exchange areas by arranging the deflection parts, and the deflection parts are arranged in a staggered manner, so that the flow direction of fluid can be continuously changed, the flow of the fluid on the plate body is increased, the fluid flow time is prolonged, and the heat exchange effect is improved; one end of the baffling part is connected with one long edge of the plate body, and the other end of the baffling part is arranged at an interval with the other long edge of the plate body so as to communicate the adjacent sub heat exchange areas; the long edge of the plate body is provided with a first flow passage connecting port and a second flow passage connecting port which are respectively used for forming a flow passage inlet and a flow passage outlet; the first flow channel connecting port is communicated with the sub heat exchange area at the head end, and the second flow channel connecting port is communicated with the sub heat exchange area at the tail end, so that a complete fluid flow path is formed from the first flow channel connecting port to the second flow channel connecting port through the plurality of sub heat exchange areas; along the direction from the first flow channel connecting port to the second flow channel connecting port, the widths of the plurality of sub heat exchange areas are in a descending trend, so that the cross section area of the flow channel is in a descending trend, the volume is reduced due to the condensation of the fluid, the flow speed of the fluid can be ensured, the heat transfer effect is ensured, and meanwhile, the heat exchange area of the plate body is fully utilized; the distance between the deflection parts and the long sides of the plate body influences the cross section area of a flow channel when the fluid deflects, the smaller the distance is, the smaller the cross section area of the flow channel is, the distance between the deflection parts and the long sides of the plate body is set to be in a descending trend along the direction from the first flow channel connecting port to the second flow channel connecting port, the cross section area of the flow channel when the fluid deflects is also matched with the volume of the fluid, the flowing speed of the fluid is ensured, and the heat transfer effect is ensured; the heat exchange plate, the heat exchange plate pair and the heat exchanger are simple in structure and convenient to use, flow velocity of fluid in the heat exchanger can be balanced, heat transfer effect is ensured, stability is good, and service life of the heat exchanger is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the related art, the drawings needed to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a first heat exchange plate according to an embodiment of the present application;

FIG. 2 is a schematic view of a heat exchanger plate mirroring the configuration of FIG. 1;

FIG. 3 is a schematic structural view of a second heat exchange plate according to an embodiment of the present application;

FIG. 4 is a schematic view of a heat exchange plate pair according to an embodiment of the present application;

FIG. 5 is a schematic view of another heat exchange plate pair according to an embodiment of the present application;

fig. 6 isbase:Sub>A schematic sectional view along the directionbase:Sub>A-base:Sub>A in fig. 5.

Reference numerals: 1. a plate body; 1-1, a heat exchange zone; 1-2, a sub heat exchange area; 2. a baffle portion; 3. a first flow passage connection port; 4. a second flow passage connection port; 5. a protrusion; 6. a heat exchange flow channel; 7. a flow channel inlet; 8. a flow channel outlet; 9. welding a bead; 10. a point of contact.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to the accompanying drawings in combination with specific embodiments.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should have a general meaning as understood by those having ordinary skill in the art to which the present application belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied.

Be applied to plate heat exchanger that condensation operating mode used, the fluid state of its import department is gaseous state or gas-liquid mixture usually, through the condensation of heat exchanger, the fluid state of exit is gas-liquid mixture or liquid generally, the volume can significantly reduce, and the inside runner sectional area of heat exchanger of current condensation operating mode equals, this just leads to the fluid at the in-process of condensation, in order to fill the runner, the velocity of flow can constantly reduce, thereby make heat transfer effect worsen, some heat exchangers can reduce the pipe diameter at exit, with this improve the fluid velocity of flow of exit, but can not balance the velocity of flow change of fluid in the heat exchanger is inside, can reduce heat transfer effect equally.

Hereinafter, the technical solution of the present application will be described in detail by specific examples with reference to fig. 1 to 6.

In some embodiments of the present application, there is provided a heat exchanger plate, as shown in fig. 1 to 3, comprising: the plate body 1 comprises a heat exchange area 1-1; along the length direction of the plate body 1, a plurality of staggered baffling parts 2 are arranged on the plate body 1 at intervals, so that the heat exchange area 1-1 is divided into a plurality of sub heat exchange areas 1-2; one end of the baffle part 2 is connected with one long edge of the plate body 1 along the width direction of the plate body 1, and the other end of the baffle part is arranged at intervals with the other long edge of the plate body 1, so that the adjacent sub heat exchange areas 1-2 are communicated; the long edge of the plate body 1 is provided with a first flow channel connecting port 3 and a second flow channel connecting port 4, the first flow channel connecting port 3 and the second flow channel connecting port 4 are respectively communicated with the corresponding sub heat exchange areas 1-2, the width of the sub heat exchange areas 1-2 is in a descending trend along the direction from the first flow channel connecting port 3 to the second flow channel connecting port 4, and the distance between the baffling parts 2 and the long edge of the plate body 1 is in a descending trend.

As shown in fig. 1, the plate body 1 is rectangular and includes two long sides and two short sides, the heat exchange area 1-1 is also rectangular, in the figure, the direction L is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, and the direction L' is along the first flow channel connection port 3 to the second flow channel connection port 4.

The baffling parts 2 are arranged to divide the heat exchange area 1-1 into a plurality of sub heat exchange areas 1-2, the sub heat exchange areas 1-2 are used for forming heat exchange flow channels 6, the baffling parts 2 are arranged in a staggered mode, the flowing direction of fluid can be changed continuously, the flow of the fluid on the plate body 1 is increased, the flowing time of the fluid is prolonged, and the heat exchange effect is improved; the number of the baffle parts 2 is plural, and is not limited specifically, as shown in fig. 1, 7 baffle parts 2 are provided, the plate body 1 is divided into 8 sub heat exchange regions 1-2, a dashed line box in the figure represents one sub heat exchange region 1-2, the corresponding flow path is eight, and the widths of the sub heat exchange regions 1-2 are L1, L2, L3, L4, L5, L6, L7 and L8 in sequence along the L' direction.

One end of the baffle part 2 is connected with one long edge of the plate body 1, and the other end of the baffle part is arranged at an interval with the other long edge of the plate body 1, so that adjacent sub heat exchange areas 1-2 are communicated, and as shown in fig. 1, along the direction L', the distances between the baffle part 2 and the long edges of the heat exchange plates are D1, D2, D3, D4, D5, D6 and D7 in sequence.

A first flow channel connecting port 3 and a second flow channel connecting port 4 are arranged on the long side of the plate body 1 and are respectively used for forming a flow channel inlet 7 and a flow channel outlet 8, as shown in fig. 1, the first flow channel connecting port 3 and the second flow channel connecting port 4 are arranged on the same side of the plate body 1, namely, the first flow channel connecting port 3 is arranged at one end of the same long side of the plate body 1, the second flow channel connecting port 4 is arranged at the other end of the same long side of the plate body 1, and the plate body is suitable for plate bodies 1 with even number of flow channels; as shown in fig. 3, the opposite sides of the plate body 1 are provided with a first flow channel connection port 3 and a second flow channel connection port 4, that is, one end of one long side of the plate body 1 is provided with the first flow channel connection port 3, and the other end of the other long side is provided with the second flow channel connection port 4, which are distributed along the opposite angle of the plate body 1, and are suitable for plate bodies 1 with odd number of flow paths.

The first flow channel connection port 3 communicates with the first-end sub heat exchange area 1-2, and the second flow channel connection port 4 communicates with the last-end sub heat exchange area 1-2, so that a complete fluid flow path is formed from the first flow channel connection port 3 to the second flow channel connection port 4 through the plurality of sub heat exchange areas 1-2.

Along the L' direction, the widths of the plurality of sub heat exchange areas 1-2 are in a descending trend, as shown in figure 1, namely L1 is more than or equal to L2, more than or equal to L3, more than or equal to L4, more than or equal to L5, more than or equal to L6, more than or equal to L7 and more than or equal to L8, so that the cross section area of the flow channel is in a descending trend, the volume is reduced due to fluid condensation, the cross section area of the flow channel is reduced, additional flow channel volume does not need to be filled with the fluid, the flowing speed of the fluid can be prevented from being reduced, the heat transfer effect is ensured, and meanwhile, the heat exchange area of the plate body 1 is fully utilized.

The distance between the deflection parts 2 and the long sides of the plate body 1 influences the flow passage sectional area when the fluid deflects, the smaller the distance, the smaller the corresponding flow passage sectional area, and the distance between the deflection parts 2 and the long sides of the plate body 1 is arranged along the L' direction, as shown in figure 1, namely, D1 is more than or equal to D2, D3 is more than or equal to D4, D5 is more than or equal to D6, D7 is more than or equal to D4, D5 is more than or equal to D6, the flow passage sectional area when the fluid deflects is matched with the volume of the fluid, the flow speed of the fluid is ensured, and the heat transfer effect is ensured.

The heat exchange plate is simple in structure, convenient to use, capable of balancing the flow velocity of fluid in the heat exchanger, capable of ensuring the heat transfer effect, good in stability and capable of prolonging the service life of the heat exchanger.

In some embodiments, the width of each sub heat exchange area 1-2 decreases and the distance between each baffle 2 and the long side of the plate body 1 decreases in the direction from the first flow channel connection port 3 to the second flow channel connection port 4.

Along the L' direction, the width of each sub heat exchange area 1-2 is decreased progressively, namely L1 is more than L2 and more than L3 and more than L4 and more than L5 and more than L6 and more than L7 and more than L8, so that the cross section area of a flow channel of the sub heat exchange area 1-2 is decreased progressively, the influence of the change of the condensation volume of the fluid can be effectively reduced, the flowing speed of the fluid is ensured to be balanced, and the heat transfer effect is improved.

Similarly, along the direction L', the distance between each baffling part 2 and the long edge of the plate body 1 is gradually reduced, namely D1 is more than D2 and more than D3 is more than D4 and more than D5 and more than D6 and more than D7, so that the balance of the flowing speed of the fluid is ensured, and the heat transfer effect is improved.

In some embodiments, the number of the heat exchange sub-regions 1-2 is greater than or equal to six, the widths of two or three adjacent heat exchange sub-regions 1-2 located in the middle of the plate body 1 are equal, and the distances between two or three adjacent baffles 2 located in the middle of the plate body 1 and the long side of the plate body 1 are equal.

In the process of realizing the application, the process that the volume change is generated by fluid condensation is not linear, for example, the fluid volume change of some adjacent sub heat exchange areas 1-2 in the middle of the plate body 1 is not large, the widths of the corresponding sub heat exchange areas 1-2 can be set to be equal to adapt to the fluid volume, the fluid flow rate is further more balanced, and the heat exchange effect is ensured.

The number of the sub heat exchange areas 1-2 is more than or equal to six, and when the number of the sub heat exchange areas 1-2 is an even number, the widths of two adjacent sub heat exchange areas 1-2 positioned in the middle of the plate body 1 can be set to be equal; when the number of the sub heat exchange areas 1-2 is odd, the widths of the adjacent three sub heat exchange areas 1-2 positioned in the middle of the plate body 1 can be set to be equal, and the heat exchange effect is improved without limitation; similarly, when the number of the sub heat exchange areas 1-2 is even, the distance between the adjacent three baffling parts 2 positioned in the middle of the plate body 1 and the long edge of the plate body 1 can be set to be equal; when the number of the sub-heat exchange areas 1-2 is odd, the distance between two adjacent baffling parts 2 positioned in the middle of the plate body 1 and the long edge of the plate body 1 can be equal, and the heat exchange effect is improved without limitation.

In some embodiments, as shown in fig. 1, in the direction from the first flow channel connection port 3 to the second flow channel connection port 4, the first sub heat exchange area 1-2 behind the baffle 2 is a first area, and the distance between the baffle 2 and the long side of the plate body 1 is 0.5 to 2 times the width of the first area corresponding to the baffle 2.

As shown in fig. 1, along the direction L', the first sub heat exchange area 1-2 behind the baffle 2 is the first area, that is, the first area corresponding to the baffle 2 with the distance D1 is the sub heat exchange area 1-2 with the width L1, the first area corresponding to the baffle 2 with the distance D2 is the sub heat exchange area 1-2 with the width L2, and so on; the distance between the baffle part 2 and the long edge of the plate body 1 is 0.5 to 2 times of the width of the first area corresponding to the baffle part 2, namely D1/L1 is more than or equal to 0.5 and less than or equal to 2, D2/L2 is more than or equal to 0.5 and less than or equal to 2, and the like, the distance proportion can be adjusted according to the flow velocity of the fluid, and the heat exchange effect is further ensured.

For example, when the flow rate of the fluid is lower, D1/L1 is set to be more than or equal to 0.5 and less than 1, and the like, so that the phenomenon that the fluid turning space is larger and the space in the flow channel is vacant to form a flow dead zone and reduce the heat exchange effect during baffling is prevented; when the fluid velocity of flow is higher, can set up 1 and be less than or equal to D1/L1 and be less than or equal to 2 etc. guarantee that the fluid is abundant when the baffling turns to the space, the velocity of flow when can control the fluid better turns to ensures the stability of heat exchanger, because fluid inertia is great, if the interval on baffling portion 2 and plate body 1's long limit is less, the fluid can receive the runner when turning to at a high speed and hinder, produce violent vibrations, also can seriously influence the velocity of flow, reduce the heat transfer effect.

In some embodiments of the present application, there is provided a heat exchange plate pair, as shown in fig. 1, fig. 2 and fig. 4, including two heat exchange plates as described in any of the above embodiments, which are oppositely disposed, and the structures of the two heat exchange plates are mirror images of each other; the four sides of the two heat exchange plates are abutted, the baffling parts 2 of the two heat exchange plates are abutted, and the sub heat exchange areas 1-2 of the two heat exchange plates are connected to form a heat exchange flow channel 6; the first flow channel connectors 3 of the two heat exchange plates are connected to form a flow channel inlet 7, and the second flow channel connectors 4 of the two heat exchange plates are connected to form a flow channel outlet 8.

Fig. 1 shows a first heat exchange plate, fig. 2 shows another heat exchange plate with a mirror image of the structure of fig. 1, in fig. 2, the direction L is the length direction of the plate body 1, W is the width direction of the plate body 1, and L' is the direction from the first flow channel connection port 3 to the second flow channel connection port 4; the two heat exchange plates are oppositely arranged to obtain the heat exchange plate pair shown in fig. 4, wherein the direction L in fig. 4 is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, and the direction L' is from the flow channel inlet 7 to the flow channel outlet 8.

The two heat exchange plates are in mirror image structures and used for sealing the heat exchange plate pair and forming a heat exchange flow channel 6; the four sides of the two heat exchange plates are abutted with the baffle part 2, the sub heat exchange areas 1-2 of the two heat exchange plates are connected to form a complete roundabout heat exchange runner 6, the first runner connectors 3 of the two heat exchange plates are connected to form a complete runner inlet 7, the second runner connectors 4 of the two heat exchange plates are connected to form a complete runner outlet 8, and fluid passes through the heat exchange runners 6 at the sub heat exchange areas 1-2 through the runner inlet 7 until the runner outlet 8 forms a complete fluid flow path.

The heat exchange plate has the same corresponding effect with the heat exchange plate, can balance the flow velocity of fluid in the heat exchanger, ensures the heat transfer effect, has good stability and prolongs the service life of the heat exchanger.

In some embodiments, as shown in fig. 5 and fig. 6, a plurality of protrusions 5 are disposed in the heat exchange region 1-1, the heat exchange regions 1-1 of two heat exchange plates are butted to form a plurality of contact points 10, the contact points 10 are arranged in an array, and a distance between two adjacent contact points 10 is 20mm to 50mm.

In fig. 5, the direction L is the length direction of the plate body 1, the direction W is the width direction of the plate body 1, and the direction L' is along the flow channel inlet 7 to the flow channel outlet 8, and fig. 6 is a schematic sectional structure diagram of the protrusion 5.

The bulge 5 is arranged for forming a complex flow channel, the heat transfer effect of the fluid is improved, the bulge 5 can adopt a processing mode of welding and then bulging forming, the heat exchange plate manufactured by the process is small in welding point, the heat transfer area is increased, the material utilization rate is improved, and meanwhile, no gap exists in the welding point, and the gap corrosion is avoided.

As shown in fig. 5, the heat exchange areas 1-1 of the two heat exchange plates are offset to form a plurality of contact points 10, the diameter of each contact point 10 may be 5mm to 12mm, and the contact points 10 are arranged in an array to form a complex flow channel, as shown in fig. 4, C2 is the distance between two adjacent contact points 10 in the same row, and the set distance is 20mm to 50mm, so that the situation that the distance is too small to block the flow of fluid, and the situation that the distance is too large and the heat transfer effect is poor is avoided.

The manufacturing method of the heat exchange plate pair can be characterized in that two stacked metal plates can be arranged, a contact point 10, a baffling part 2 and welding point welding lines on four sides of a plate body 1 are formed through laser welding, and then a three-dimensional bulge 5, a flow channel inlet 7 and a flow channel outlet 8 are formed through a bulging forming process.

In some embodiments, as shown in fig. 4, the contact points 10 in two adjacent columns are arranged in a staggered manner, and the staggered length is equal to 1/2 of the distance between two adjacent contact points 10 in the same column.

The two adjacent columns of contact points 10 are arranged in a staggered manner, so that the complexity of the flow channel can be increased, a netted flow channel is formed, and the heat transfer effect of the fluid is improved, as shown in fig. 4, C1 is the staggered length of two adjacent columns of contact points 10, C2 is the distance between two adjacent contact points 10 in the same column, and the staggered length is equal to 1/2 of the distance between two adjacent contact points 10 in the same column, namely C1/C2=1/2, so that the contact points 10 are arranged in a regular triangle or isosceles triangle, and the heat transfer effect is improved.

In some embodiments, the cross-sectional area of the channel inlet 7 is greater than or equal to the cross-sectional area of the channel outlet 8, and the maximum depth of the heat exchange channel 6 is 5mm to 10mm.

As shown in fig. 4 and 5, the runner inlet 7 is connected to the fluid input pipeline, the runner outlet 8 is connected to the fluid output pipeline, and the sectional area of the runner inlet 7 is greater than or equal to that of the runner outlet 8, so that the flow rate of the fluid can be balanced, the flow rate of the fluid inlet is ensured not to be too large, vibration caused by too large pressure loss is avoided, and the stability of the heat exchanger is improved.

As shown in fig. 6, H in the drawing is the maximum depth of the heat exchange flow channel 6, and the maximum depth of the heat exchange flow channel 6 is set to be 5mm to 10mm, so that the situation that the depth is too low to influence the flow of fluid is avoided, the situation that the depth is too high is also avoided, and the heat transfer effect is reduced.

In some embodiments, as shown in fig. 5, four sides of two heat exchange plates are connected by welding, and a welding bead 9 is formed at the joint, wherein the distance between the welding bead 9 and the edge of the plate body 1 is less than or equal to 20mm.

The distance at the edge of welding bead 9 and plate body 1 is less than or equal to 20mm, can improve heat transfer area, improve plate body 1's utilization ratio, welding bead 9 can be for the two-way sealing line, strengthen sealed effect, the distance at the sealing line in the outside and plate body 1's edge is less than or equal to 4mm, the distance at the edge of inboard sealing line and plate body 1 is less than or equal to 20mm, prevent that one sealing line from leading to leaking when plate body 1 internal corrosion or welding are not good, also can prevent that plate body 1 outside medium has corrosivity, protect main inboard sealing line.

In some embodiments of the present application, there is provided a heat exchanger comprising a plurality of stacked pairs of heat exchange plates as described in any of the above embodiments.

The heat exchanger is simple in structure, convenient to use, capable of balancing the flow velocity of fluid in the heat exchanger and ensuring the heat transfer effect, good in stability and long in service life.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the context of the present application, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

Additionally, where details are set forth in order to describe example embodiments of the present application, it will be apparent to one skilled in the art that the present embodiments may be practiced without, or with variation of, these details. Accordingly, the description is to be regarded as illustrative instead of restrictive.

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

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made without departing from the spirit or scope of the embodiments of the present application are intended to be included within the scope of the claims.

Claims (10)

1. A heat exchanger plate, comprising:

a plate body including a heat exchange region;

along the length direction of the plate body, a plurality of staggered baffling parts are arranged on the plate body at intervals so as to divide the heat exchange area into a plurality of sub heat exchange areas; one end of the baffling part is connected with one long edge of the plate body along the width direction of the plate body, and the other end of the baffling part is arranged at intervals with the other long edge of the plate body so as to communicate the adjacent sub heat exchange areas;

the long edge of the plate body is provided with a first flow channel connecting port and a second flow channel connecting port, the first flow channel connecting port and the second flow channel connecting port are respectively communicated with the corresponding sub heat exchange areas, and the width of each sub heat exchange area is downward and the distance between the deflection parts and the long edge of the plate body is downward.

2. A heat exchanger plate according to claim 1, wherein the width of each of said sub-heat exchange areas decreases in a direction from said first flow channel connection port to said second flow channel connection port, and the distance between each of said baffles and the long side of said plate body decreases.

3. A heat exchanger plate according to claim 1, wherein the number of said sub heat exchange areas is equal to or greater than six, the width of two or three adjacent sub heat exchange areas in the middle of said plate body is equal, and the distance between two or three adjacent baffles in the middle of said plate body and the long side of said plate body is equal.

4. A heat exchange plate according to claim 1, wherein the first sub heat exchange area behind the baffle in the direction from the first flow passage connection port to the second flow passage connection port is a first area, and the distance between the baffle and the long side of the plate body is 0.5 to 2 times the width of the first area corresponding to the baffle.

5. A heat exchanger plate pair, comprising two heat exchanger plates according to any of claims 1-4 arranged opposite each other, the structures of the two heat exchanger plates being mirror images of each other;

the four sides of the two heat exchange plates are abutted, the baffling parts of the two heat exchange plates are abutted, and the sub heat exchange areas of the two heat exchange plates are connected to form a heat exchange flow channel;

the first flow channel connectors of the two heat exchange plates are connected to form a flow channel inlet, and the second flow channel connectors of the two heat exchange plates are connected to form a flow channel outlet.

6. The pair of heat exchange plates according to claim 5, wherein a plurality of protrusions are provided in the heat exchange region, the heat exchange regions of two heat exchange plates abut to form a plurality of contact points, the contact points are arranged in an array, and the distance between two adjacent contact points is 20mm to 50mm.

7. A heat exchange plate pair according to claim 6, wherein the contact points of two adjacent columns are arranged with a dislocation length equal to 1/2 of the distance between two adjacent contact points of the same column.

8. The pair of heat exchange plates according to claim 5, wherein the cross-sectional area of the flow channel inlet is greater than or equal to the cross-sectional area of the flow channel outlet, and the maximum depth of the heat exchange flow channel is 5mm to 10mm.

9. The pair of heat exchange plates according to claim 5, wherein four sides of two heat exchange plates are connected by welding, and a weld bead is formed at the joint, and the distance between the weld bead and the edge of the plate body is less than or equal to 20mm.

10. A heat exchanger, characterized in that it comprises a plurality of stacked pairs of heat exchanger plates according to any one of claims 5-9.

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