CN211178074U

CN211178074U - Second plate for multi-stage flow-dividing brazing heat exchanger plate group

Info

Publication number: CN211178074U
Application number: CN201922180794.5U
Authority: CN
Inventors: 陈天鹏; 韩维哲; 吴耀华; 姚建; 徐晓栋
Original assignee: Weal Yield Jiangsu Heat Exchanger Co ltd
Current assignee: Weal Yield Jiangsu Heat Exchanger Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-04
Anticipated expiration: 2029-12-06

Abstract

The utility model belongs to the technical field of the heat exchanger, concretely relates to second slab is used to multistage reposition of redundant personnel brazing heat exchanger slab group, the second slab includes the interarea board and baffle on every side, the interarea board includes diffluence zone, main heat transfer district and converges the district, all be equipped with the reposition of redundant personnel muscle between diffluence zone and the main heat transfer district and between main heat transfer district and the district that converges for it is even to flow into the medium in main heat transfer district and flow into the medium distribution that converges the district from main heat transfer district from the diffluence zone. The utility model discloses set up diffluence area, main heat transfer district and the district that converges on the main panel of heat transfer slab to set up the reposition of redundant personnel muscle between diffluence area and main heat transfer district and converge between the district, do benefit to the evenly distributed of medium, be favorable to improving the heat transfer performance and the heat transfer stability of heat exchanger.

Description

Second plate for multi-stage flow-dividing brazing heat exchanger plate group

Technical Field

The utility model belongs to the technical field of the heat exchanger, concretely relates to second slab is used to heat exchanger plate group of brazing of multistage reposition of redundant personnel.

Background

The brazed plate heat exchanger is one efficient heat exchanger produced through brazing and includes one series of corrugated metal sheets. The various plates form channels between them through which heat is exchanged. Compared with the conventional shell-and-tube heat exchanger, the heat transfer coefficient of the heat exchanger is much higher under the condition of the same flow resistance and pump power consumption, and the heat exchanger tends to replace the shell-and-tube heat exchanger in an applicable range.

In the design process of the brazed plate heat exchanger in the market at present, the circulation performance of media near the middle part of a plate sheet is not considered due to the circulation performance of the media at two ends of the heat exchanger, and the condition that the media in the heat exchanger circulate unevenly is aggravated along with the increase of the distance, so that the performance of the heat exchanger is reduced or is not stable enough.

SUMMERY OF THE UTILITY MODEL

Poor in order to solve the medium circulation homogeneity of current heat exchanger to lead to heat exchanger performance to descend or the problem of stablizing inadequately, the utility model discloses a second slab is used to brazing heat exchanger slab group of multistage reposition of redundant personnel, through set up the diffluence area on the main board of second slab, main heat transfer district and converge the district, and set up the reposition of redundant personnel muscle between diffluence area and main heat transfer district and between main heat transfer district and the district that converges, do benefit to the evenly distributed of medium, be favorable to improving the heat transfer performance and the heat transfer stability of heat exchanger.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a second plate for a multi-stage shunting brazed heat exchanger plate set comprises a main panel and surrounding baffle plates, wherein the main panel comprises a shunting area, a main heat exchange area and a confluence area, and shunting ribs are arranged between the shunting area and the main heat exchange area and between the main heat exchange area and the confluence area and used for uniformly distributing media flowing into the main heat exchange area from the shunting area and media flowing into the confluence area from the main heat exchange area.

Preferably, the flow splitting region is provided with a plurality of first convex ridges, valley I is formed between adjacent first convex ridges, the included angle between the first convex ridges and the flow splitting ribs is α, the main heat exchange region is provided with a plurality of second convex ridges, valley II is formed between adjacent second convex ridges, the included angle between the second convex ridges and the flow splitting ribs is β, the flow converging region is provided with a plurality of third convex ridges, valley III is formed between adjacent third convex ridges, the included angle between the third convex ridges and the flow splitting ribs is gamma, the α is not equal to β, and the β is not equal to gamma.

Preferably, the second plate for the brazed heat exchanger plate group is used for an evaporator, wherein α is equal to gamma and is 30-45 degrees, and β is 20-30 degrees.

Preferably, the second plate for the brazed heat exchanger plate group is used for a condenser, wherein α is equal to gamma and is 20-30 degrees, and β is 30-45 degrees.

Preferably, the first ridge, the second ridge and the third ridge are inclined towards the same direction; the heights of the first raised ridge, the second raised ridge and the third raised ridge are equal and equal to twice the height of the flow dividing rib.

Preferably, the second ridges of the second plate are provided with a plurality of grooves recessed in the direction of the second valleys.

Preferably, the grooves are uniformly distributed on the corresponding second ridges.

Preferably, the second valley of the second plate has a valley protrusion protruding towards the second ridge along the bottom thereof, so as to increase the turbulence of the medium in the flow channel.

Preferably, the height of the valley and the protrusion is equal to half of the height of the second ridge.

Preferably, the bottom of the second valley of the second plate is divided into a second valley and a second valley by the valley protrusion, and the width of the bottom of the second valley, the width of the bottom of the second valley and the width of the top of the second ridge of the second plate are equal and larger than the width of the top of the valley protrusion.

The multi-stage flow dividing brazed heat exchanger plate group using the second plate comprises at least two pairs of unit plate groups, each pair of unit plate groups comprises a first plate and a second plate which are arranged in a stacked mode, and the first plate also comprises a main panel and a surrounding baffle.

Preferably, the second plate is rotated 180 ° with respect to the first plate.

Preferably, the second valley of the first plate is provided with a plurality of convex grooves protruding towards the second ridge.

Preferably, the convex grooves and the concave grooves have the same size and are respectively and uniformly distributed on the corresponding second valleys and the corresponding second ridges.

Preferably, the second ridges of the first plate have concave ridges along the top thereof in the direction of the second valleys, so as to increase turbulence of the medium in the flow channel.

Preferably, the height of the ridge depressions and the height of the valley projections are equal.

Preferably, the top of the second ridge of the first plate is divided into a first second ridge and a second ridge by the ridge recess, the top width of the second ridge, the bottom width of the second valley of the first plate, the bottom width of the second valley and the top width of the second ridge of the second plate are all equal, the bottom width of the ridge recess is equal to the top width of the valley protrusion, and the top width of the first ridge is greater than the top width of the valley protrusion.

The utility model discloses following beneficial effect has:

(1) the utility model discloses set up the diffluence area on the main panel of second slab, main heat transfer district and converge the district, and set up the reposition of redundant personnel muscle between diffluence area and main heat transfer district and between main heat transfer district and the district that converges, the setting up of reposition of redundant personnel muscle can make the medium that flows to main heat transfer district from the diffluence area carry out uniform distribution at reposition of redundant personnel muscle department, do benefit to the medium and flow into main heat transfer district evenly, after the medium accomplishes the heat exchange in main heat transfer district, again through the reposition of redundant personnel muscle between main heat transfer district and the district that converges and carry out secondary distribution, evenly converge together, flow to the exit position through the district that converges, in the whole process, the medium has undergone twice uniform distribution, can make the medium circulate more evenly in the whole runner, be favorable to improving heat transfer and form, guarantee permanent heat;

(2) the heat exchange plate sheet of the utility model can adjust the flow velocity of the medium in three different areas by adjusting the size of the included angle α between the first convex ridge and the shunting rib, the included angle β between the second convex ridge and the shunting rib and the included angle gamma between the third convex ridge and the shunting rib, and the size of β is adjusted to determine that the heat exchange plate sheet is used for an evaporator or a condenser;

(3) the heat exchange plate of the utility model is provided with the convex groove on the second valley and the groove on the second convex ridge, and the arrangement of the convex groove and the groove is beneficial to reducing the pressure drop in the flow passage and is beneficial to the faster and more uniform circulation of the medium, thereby improving the heat exchange performance;

(4) the utility model discloses it is sunken to be equipped with sunken convex ridge at two tops of convex ridge of first slab to be equipped with convex valley arch in two bottoms of valley of second slab, be convenient for increase the torrent of medium in the runner, not only be favorable to improving heat exchange efficiency, can also effectively avoid the accumulation of dirt, play good antifouling dirt effect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a heat exchange plate group of the present invention;

fig. 2 is a schematic structural view of a first sheet of the present invention;

FIG. 3 is an enlarged view of a portion a of FIG. 2;

FIG. 4 is an enlarged view of portion b of FIG. 2;

fig. 5 is a schematic structural view of a second sheet of the present invention;

FIG. 6 is an enlarged view of portion c of FIG. 5;

FIG. 7 is an enlarged view of portion d of FIG. 5;

FIG. 8 is a top view of a pair of cell plate sets according to the present invention;

FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 8;

in the figure: 1. a first sheet; 2. a second sheet; 3. a baffle plate; 41. a shunting region; 411. a first convex ridge; 412. a valley I; 42. a main heat exchange zone; 421. a second convex ridge; 4211. a second ridge; 4212. a second ridge two; 422. a second valley; 4221. a second valley; 4222. a second valley two; 423. a convex groove; 424. a groove; 425. the convex ridge is concave; 426. the valley is convex; 43. a converging region; 431. a third convex ridge; 432. valley three; 44. and (4) distributing ribs.

Detailed Description

The present invention will now be described in further detail with reference to examples.

A second plate for a multi-stage flow division brazing heat exchanger plate group is shown in fig. 5, wherein the second plate 2 comprises a main panel and a surrounding baffle 3, the main panel comprises a flow division area 41, a main heat exchange area 42 and a confluence area 43, and flow division ribs 44 are arranged between the flow division area 41 and the main heat exchange area 42 and between the main heat exchange area 42 and the confluence area 43 and are used for uniformly distributing media flowing into the main heat exchange area 42 from the flow division area 41 and media flowing into the confluence area 43 from the main heat exchange area 42. The arrangement of the flow dividing ribs 44 can enable the medium flowing from the flow dividing region 41 to the main heat exchange region 42 to be uniformly distributed at the flow dividing ribs 44, so that the medium can uniformly flow into the main heat exchange region 42, and after the medium completes heat exchange in the main heat exchange region 42, the medium is secondarily distributed through the flow dividing ribs 44 between the main heat exchange region 42 and the flow converging region 43, uniformly converged together, and flows to an outlet position through the flow converging region 43. In the whole process, the medium is uniformly distributed on two sides, so that the medium can more uniformly circulate in the whole flow channel, the heat exchange is favorably improved, and the long-term heat exchange stability is ensured.

In addition, because the main panel of the heat exchange plate is provided with a plurality of corrugated convex ridges and valleys, the heat exchange plate is easy to deform, and the arrangement of the flow dividing ribs 44 can provide effective support for the whole heat exchange plate, thereby improving the panel strength and being beneficial to improving the problem of processing deformation.

In a specific embodiment, as shown in fig. 2-8, the diversion area 41 is provided with a plurality of first ridges 411, a valley 412 is formed between adjacent first ridges 411, an included angle between the first ridges 411 and the diversion ribs 44 is α, the main heat transfer area 42 is provided with a plurality of second ridges 421, a valley 422 is formed between adjacent second ridges 421, an included angle between the second ridge 421 and the diversion ribs 44 is β, the confluence area 43 is provided with a plurality of third ridges 431, a valley 432 is formed between adjacent third ridges 431, an included angle between the third ridge 431 and the diversion ribs 44 is γ, α is not equal to β, β is not equal to γ, α is not equal to β, so that the medium does not directly flow from the diversion area 41 to the main heat transfer area 42, but first passes through the distribution of the diversion ribs 44 and then enters the main heat transfer area 42, β is not equal to γ, and the medium can also pass through the distribution and then enters the confluence area 43.

In one particular embodiment, shown in fig. 8, where the brazed heat exchanger plate pack uses the second plate 2 for the evaporator, α is equal to γ, 30-45 °, β is 20-30 °, since evaporation is the process of liquid to vapor, setting the α (or γ) angle to a larger angle is more favorable for the liquid (or vapor) to rapidly flow into (or rapidly evaporate out of) the main heat exchange zone 42, thereby improving evaporation performance.

In one particular embodiment, as shown in fig. 8, the brazed heat exchanger plate pack uses the second plate 2 for the condenser, α is equal to γ, and is 20-30 °, β is 30-45 °. since condensation is the process of converting vapor state to liquid state, setting the α (or γ) angle to a larger angle is more favorable for the vapor state (or liquid) to rapidly flow into (or out of) the main heat exchange area 42, thereby improving condensation performance.

In a specific embodiment, as shown in fig. 9 and 10, the first ridge 411, the second ridge 421 and the third ridge 431 are all inclined toward the same direction; the heights of the first ridge 411, the second ridge 421 and the third ridge 431 are all equal and equal to twice the height of the flow dividing rib 44.

In a specific embodiment, as shown in fig. 6-7, the second ridge 421 of the second plate 2 is provided with a plurality of grooves 424 which are recessed towards the second valley 422. The grooves 424 formed in the second ridges 421 are beneficial to reducing pressure drop, facilitating the medium to flow more quickly and uniformly, and improving heat exchange performance.

In one embodiment, as shown in fig. 2 and 5, the grooves 424 are evenly distributed over the corresponding ridges two 421.

In a particular embodiment, as shown in fig. 6-7, the second valley 422 of the second plate 2 has valley protrusions 426 along its bottom that protrude in the direction of the second ridge 421 to facilitate increased turbulence of the medium in the flow channel. As shown by the dotted line with an arrow in fig. 9, the medium can form turbulent flow in the flow channel, which is not only beneficial to improving the heat exchange efficiency, but also can effectively avoid the accumulation of dirt, and has good dirt-proof effect.

In one particular embodiment, as shown in FIG. 10, the height of the valley projections 426 is equal to half the height of the second ridge 421.

In a specific embodiment, as shown in fig. 6-7 and 10, the bottom of the valley two 422 of the second plate 2 is divided into a first valley two 4221 and a second valley two 4222 by a valley protrusion 426, and the bottom width of the first valley two 4221, the bottom width of the second valley two 4222 and the top width of the ridge two 421 of the second plate 2 are all equal and greater than the top width of the valley protrusion 426.

A multi-stage flow-dividing brazing heat exchanger plate group using the second plate comprises at least two pairs of unit plate groups, as shown in FIG. 1, each pair of unit plate groups comprises a first plate 1 and a second plate 2 which are arranged in a stacked mode, the first plate 1 also comprises a main panel and a surrounding baffle 3, the main panel of the first plate 1 also comprises the flow dividing region 41, the main heat exchange region 42, a flow converging region 43 and a flow dividing rib 44 which are arranged in a stacked mode, the flow dividing region 41 of the first plate 1 also comprises the first ridge 411 and the first valley 412 which are arranged in a stacked mode and the angle between the first ridge 411 and the flow dividing rib 44 is α, the main heat exchange region 42 of the first plate 1 also comprises the second ridge 421 and the second valley 422 which are arranged in a stacked mode and the angle between the second ridge 421 and the flow dividing rib 44 is β, the flow converging region 43 of the first plate 1 also comprises the third ridge 431 and the valley 432 which are arranged in a stacked mode and the angle between the third ridge 431 and the flow dividing rib 44 is gamma.

In a particular embodiment, as shown in fig. 1, the second plate 2 is rotated 180 ° with respect to the first plate 1.

In a specific embodiment, as shown in fig. 3-4, the second valley 422 of the first plate 1 is provided with a plurality of convex grooves 423 protruding toward the second ridge 421. The convex groove 423 arranged on the second valley 422 is beneficial to reducing pressure drop and facilitating the medium to flow more quickly and uniformly, and the heat exchange performance is improved.

In one embodiment, as shown in fig. 2 and 5, the grooves 423 and the grooves 424 are equal in size and are uniformly distributed on the corresponding valleys 422 and ridges 421.

In a specific embodiment, as shown in fig. 3-4, the second ridges 421 of the first plate 1 have ridge recesses 425 along the top thereof, which are recessed toward the second valleys 422, to facilitate increased turbulence of the medium in the flow channels. As shown by the dotted line with an arrow in fig. 9, the medium can form turbulent flow in the flow channel, which is not only beneficial to improving the heat exchange efficiency, but also can effectively avoid the accumulation of dirt, and has good dirt-proof effect.

In one particular embodiment, the ridge depressions 425 and the valley projections 426 are of equal height, as shown in fig. 9-10.

In a specific embodiment, as shown in fig. 3-4, 6-7, and 9-10, the top of the second ridge 421 of the first plate 1 is divided into a first second ridge 4211 and a second ridge 4212 by the ridge recess 425, the top width of the first second ridge 4211, the top width of the second ridge 4212, the bottom width of the second valley 422 of the first plate 1, the bottom width of the first valley second 4221, the bottom width of the second valley second 4222, and the top width of the ridge 421 of the second plate 2 are all equal, the bottom width of the ridge recess 425 and the top width of the valley protrusion 426 are equal, and the top width of the first ridge second 4211 is greater than the top width of the valley protrusion 426.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A second plate for a multi-stage flow-splitting brazed heat exchanger plate package, the second plate (2) comprising a main panel and a surrounding baffle (3), characterized in that: the main panel comprises a flow distribution area (41), a main heat exchange area (42) and a confluence area (43), wherein flow distribution ribs (44) are arranged between the flow distribution area (41) and the main heat exchange area (42) and between the main heat exchange area (42) and the confluence area (43) and are used for uniformly distributing media flowing into the main heat exchange area (42) from the flow distribution area (41) and media flowing into the confluence area (43) from the main heat exchange area (42).

2. The second plate for the multi-stage flow division brazing heat exchanger plate group according to claim 1, wherein the flow division area (41) is provided with a plurality of first ridges (411), valley ones (412) are formed between every two adjacent first ridges (411), an included angle between each first ridge (411) and each flow division rib (44) is α, the main heat exchange area (42) is provided with a plurality of second ridges (421), valley ones (422) are formed between every two adjacent second ridges (421), an included angle between each second ridge (421) and each flow division rib (44) is β, the flow converging area (43) is provided with a plurality of third ridges (431), valley ones (432) are formed between every two adjacent third ridges (431), an included angle between each third ridge (431) and each flow division rib (44) is gamma, the α is not equal to β, and the β gamma is not equal to.

3. The second plate for a multi-split brazing heat exchanger plate group according to claim 2, wherein the second plate (2) for a brazing heat exchanger plate group is used for an evaporator, and α is equal to gamma and is 30-45 degrees, and β is 20-30 degrees.

4. The second plate for a multi-split brazing heat exchanger plate group according to claim 2, wherein the second plate (2) for a brazing heat exchanger plate group is used for a condenser, and α is equal to γ and is 20-30 ° and β is 30-45 °.

5. A second plate for a multi-stage flow splitting brazed heat exchanger plate pack according to claim 2, characterized in that: the first ridge (411), the second ridge (421) and the third ridge (431) are inclined towards the same direction; the heights of the first ridge (411), the second ridge (421) and the third ridge (431) are all equal and equal to twice the height of the flow dividing rib (44).

6. A second plate for a multi-stage flow splitting brazed heat exchanger plate pack according to claim 2, characterized in that: and a plurality of grooves (424) which are sunken towards the direction of the second valley (422) are arranged on the second ridge (421) of the second plate (2).

7. The second plate for a multi-stage flow-splitting brazed heat exchanger plate pack of claim 6, wherein: the grooves (424) are uniformly distributed on the corresponding second ridges (421).

8. A second plate for a multi-stage flow splitting brazed heat exchanger plate pack according to claim 2, characterized in that: the second valley (422) of the second plate (2) is provided with a valley bulge (426) protruding towards the direction of the second ridge (421) along the bottom of the second valley, so that the turbulence of the medium in the flow channel is increased.

9. A second plate for a multi-stage flow splitting brazed heat exchanger plate pack according to claim 8, wherein: the height of the valley protrusions (426) is equal to half of the height of the second ridge (421).

10. A second plate for a multi-stage flow splitting brazed heat exchanger plate pack according to claim 8, wherein: the bottom of the valley II (422) of the second plate (2) is divided into a first valley II (4221) and a second valley II (4222) by a valley bulge (426), and the bottom width of the first valley II (4221), the bottom width of the second valley II (4222) and the top width of the ridge II (421) of the second plate (2) are all equal and are larger than the top width of the valley bulge (426).