CN213811877U

CN213811877U - Plate-fin cooler

Info

Publication number: CN213811877U
Application number: CN202022275314.6U
Authority: CN
Inventors: 王晓
Original assignee: Wuxi Wansheng Heat Exchanger Co ltd
Current assignee: Wuxi Wansheng Heat Exchanger Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-07-27
Anticipated expiration: 2030-10-13

Abstract

The utility model provides a plate-fin cooler, which belongs to the technical field of coolers and comprises a cooler core body, a hot inlet end socket for hot fluid inflow, a hot outlet end socket for hot fluid outflow, a cold inlet end socket for cold fluid inflow and a cold outlet end socket for cold fluid outflow; the cooler core body comprises a plurality of heat exchange layers, each heat exchange layer comprises a plurality of fin strips, the fin strips comprise regular hexagram columnar hot fin tubes and regular hexagram columnar cold fin tubes, and a cooler structure formed by combining the fin strip structures has high stability. The hot finned tubes are provided with six angle bodies, each angle body is provided with a plurality of holes, the holes on the hot finned tubes are communicated with each other to form a hot flow channel, and the cold finned tubes form a cold flow channel. Each heat exchange layer heat flow channel wraps the cold flow channel, and independent heat exchange of each heat exchange layer is realized. The hot fluid flows through the holes to realize a plurality of local point type heat exchanges, so that the heat exchange flow of the hot fluid in the cooler can be increased, and the heat exchange efficiency is improved.

Description

Plate-fin cooler

Technical Field

The utility model relates to a cooler technical field especially relates to plate-fin cooler.

Background

In the thirties of the twentieth century, plate-fin coolers were first adopted in the aerospace industry and then widely used in the industrial sectors of refrigeration, petrochemical, air separation, aerospace, power machinery, superconduction and the like, and were recognized as one of the novel high-efficiency coolers.

Traditional plate-fin cooler uses shutter fin, ripple type fin, straight type fin etc. and hot flow channel carries out whole heat transfer with cold flow channel layering superpose, and the heat transfer effect is not good, can not full play fin to the heat transfer effect of cold, hot-fluid, and cooling efficiency has more and more can not satisfy people's cooling demand. And the conventional special-shaped fin is unstable in structure and low in pressure bearing capacity, is easy to damage and deform under the impact of high-temperature fluid and high-speed fluid, and shortens the service life of the plate-fin cooler.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a plate-fin cooler can solve among the prior art hot runner and cold flow passageway layering superpose and carry out whole heat transfer, and heat transfer effect is not good and current dysmorphism fin structure is stable inadequately, bearing capacity is lower, damages the deformation easily under the impact of high temperature fluid, high speed fluid, shortens plate-fin cooler life's problem.

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

the utility model provides a plate-fin cooler, which comprises a cooler core body, a hot inlet end socket for hot fluid to flow in and a hot outlet end socket for hot fluid to flow out; a cold inlet end socket for cold fluid to flow in and a cold outlet end socket for cold fluid to flow out; the cooler core comprises a plurality of layers of heat exchange layers, wherein each heat exchange layer comprises a hot flow channel for circulating hot fluid, a cold flow channel for cooling the hot fluid, a partition plate for separating each heat exchange layer and a seal strip for isolating the cold flow channel and the hot flow channel in each layer of the heat exchange layer; the heat inlet end socket is communicated with the heat outlet end socket through the heat flow channel; the cold inlet end socket is communicated with the cold outlet end socket through the cold flow channel; the heat exchange layer comprises a plurality of fin strips, and the fin strips comprise hot fin tubes through which a heat supply fluid flows and cold fin tubes through which a cold supply fluid flows; the heat finned tube comprises a hollow cavity and six angle bodies, wherein the hollow cavity is in a hexagonal prism shape, the six angle bodies radiate outwards from the inner wall of the heat finned tube, the angle bodies are in a triangular prism shape, a plurality of holes are formed in the angle bodies, and the holes are communicated with one another to form a heat flow channel; the cold finned tube is hexagonal prism-shaped, the cold finned tube is arranged in the cavity, the outer wall of the cold finned tube is closely attached to the inner wall of the hot finned tube, and a plurality of cold finned tubes form a cold flow channel.

Preferably, the heat finned tube is in a regular hexagram column shape, the cavity is in a regular hexagonal prism shape, and the horn body is in a regular triangular prism shape; the cold finned tube is in a regular hexagonal prism shape.

Preferably, the angle body of the hot fin tube comprises a first connecting angle body and a second connecting angle body, and the first connecting angle body and the second connecting angle body are correspondingly arranged in a direction perpendicular to the tube axis of the cold fin tube; the first connecting angle body is provided with a first V-shaped groove; and a second V-shaped groove is formed in the second connecting angle body.

Preferably, a plurality of turbolators are arranged on the inner wall of the cold fin tube, the turbolators and the cold fin tube are integrally formed, and the turbolators are hemispheres protruding out of the inner wall of the cold fin tube.

Preferably, the contact surface between the inner wall of the hot fin tube and the outer wall of the cold fin tube of each fin strip is the bottom surface of the corresponding angle body, and a plurality of holes penetrating through the angle body are equidistantly formed in each angle body along the direction parallel to the bottom surface of the angle body.

Preferably, the hot-fin tube is integrally formed with the cold-fin tube.

The technical scheme has the following advantages or beneficial effects:

Drawings

The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not intended to be drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic view of a cooler core of a plate-fin cooler provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a fin strip of a plate-fin cooler provided in embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a hot fin tube of a plate fin cooler according to embodiment 1 of the present invention;

fig. 4 is a schematic cross-sectional view of a cold fin tube of a plate fin cooler according to embodiment 1 of the present invention.

Fig. 5 is a schematic structural diagram of holes in a heat fin tube of a plate fin cooler according to embodiment 1 of the present invention.

Fig. 6 is a schematic view of the flow direction of the hot fluid in the holes of the finned heat pipe according to embodiment 1 of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which should not be construed as limiting the invention.

Example 1:

the plate-fin cooler provided by the embodiment 1 of the present invention can be understood by referring to fig. 1, 2, 3 and 6, and includes a cooler core 1, a hot inlet head 2 for hot fluid inflow, a hot outlet head 3 for hot fluid outflow, a cold inlet head for cold fluid inflow, and a cold outlet head (not shown in the drawings) for cold fluid outflow; the cooler core 1 comprises a plurality of layers of heat exchange layers 11, wherein each heat exchange layer 11 comprises a hot flow channel for circulating hot fluid, a cold flow channel for cooling the hot fluid, a partition plate 12 for separating each heat exchange layer and a seal 13 for isolating the cold flow channel and the hot flow channel in each layer of the heat exchange layer 11; the heat inlet end socket 2 is communicated with the heat outlet end socket 3 through the heat flow channel; the cold inlet end socket is communicated with the cold outlet end socket through the cold flow channel; the heat exchange layer 11 comprises a plurality of fins 14, and the fins 14 comprise hot fins 141 through which a heating fluid flows and cold fins 142 through which a cooling fluid flows; the heat finned tube 141 comprises a hollow cavity 1411 and six corner bodies 1412, wherein the hollow cavity is hexagonal prism-shaped, the six corner bodies 1412 radiate outwards from the inner wall of the heat finned tube 141, the corner bodies 1412 are triangular prism-shaped, a plurality of holes 1413 are formed in the corner bodies 1412, and the holes 1413 are communicated with one another to form the heat flow channel; the cold finned tube 142 is hexagonal prism-shaped, the cold finned tube 142 is disposed in the cavity 1411, an outer wall of the cold finned tube 142 is closely attached to an inner wall of the hot finned tube 141, and the cold flow channel is formed by a plurality of the cold finned tubes 142.

The embodiment 1 provides a plate-fin cooler, when implementing, in each heat transfer layer 11, every heat transfer layer 141's inner wall all outwards radiates out six triangular prism form horns 1412, set up a plurality of holes 1413 on every horns 1412, a plurality of holes 1413 communicate each other and form the heat flow channel, a plurality of cold fin pipes 142 form the cold flow passageway, the hot-fluid passes through the heat flow passageway that heat entered head 2 and got into each heat transfer layer 11 in, the cold-fluid passes through the cold flow passageway that the cold entered head got into every heat transfer layer 11 in and carries out the heat transfer with the hot-fluid. Because each finned heat exchanger 142 is arranged in the hollow cavity 1411 communicated with the finned heat exchanger 141, one finned heat exchanger 141 is wrapped around one finned heat exchanger 142, the hot flow channel and the cold flow channel in each heat exchange layer 11 are isolated by the seal strip 15, and the hot flow channel is wrapped on the cold flow channel, when hot fluid enters the hot flow channel and cold fluid enters the cold flow channel, the hot fluid is wrapped on the cold fluid in the hot flow channel, and the heat exchange layers 11 are separated by the partition plates 14 because the partition plates 14 are tightly welded between the adjacent heat exchange layers 11, so that the independent heat exchange of each heat exchange layer 11 is realized, the structure compactness is improved, the space is saved, the volume of the plate-fin cooler is reduced, and the production cost is reduced. In addition, when the hot fluid flows through the holes 1413, the whole heat exchange can be divided into a plurality of local point type heat exchanges, the flow of the hot fluid is increased in a limited heat exchange area, and the heat exchange efficiency can be effectively improved compared with the insufficient whole heat exchange. The cavities 1411 of the hot finned tubes 141 and the cold finned tubes 142 are both hexagonal prisms, so that the pressure bearing capacity of the cold finned tubes 142 and the pressure bearing capacity of the hot finned tubes 141 can be improved. The embodiment 1 of the utility model provides a strip of paper used for sealing of plate-fin heat exchanger is not limited to specific shape, as long as can realize in each heat transfer layer 11 cold flow channel with the thermal current channel completely cut off can.

The plate-fin cooler provided in embodiment 1 of the present invention, preferably, referring to fig. 1, 2 and 3, the heat-fin tube 141 is in a regular hexagonal prism shape, the cavity 1411 is in a regular hexagonal prism shape, and the horn 1412 is in a regular triangular prism shape; the cold finned tube 142 is in a regular hexagonal prism shape. Set up hot finned tube 141 into regular six mango star columns, inside cavity 1411 and cold finned tube 142 set up to regular six prism forms, can improve the bearing capacity of cold flow passageway and hot flow passageway for the structure of plate fin formula cooler is more stable, and the range of application for current dysmorphism plate wing is restricted, the utility model discloses the novel fin application scope that embodiment 1 provided is wider, can bring bigger benefit for the enterprise, and regular triangular prism and regular six prismatic shape are convenient for process moreover, have lower processing cost.

Preferably, referring to fig. 3, in the plate-fin cooler provided in embodiment 1 of the present invention, the corner body 1412 of the hot-fin tube 141 includes a first connecting corner body 1412-a and a second connecting corner body 1412-b, and the first connecting corner body 1412-a and the second connecting corner body 1412-b are disposed perpendicular to the tube axis direction of the cold-fin tube 142; the first connecting horn 1412-a is provided with a first V-shaped groove 1412-c; the second connecting angle body 1412-b is provided with a second V-shaped groove 1412-d. In this embodiment 1, the first V-shaped groove 1412-c and the second V-shaped groove 1412-d are both used for filling solder, so that when the plate-fin cooler is processed and produced, the contact surface between the heat exchange layer 11 and the partition plate 12 is increased, the brazing is facilitated, the close welding between the heat exchange layer 11 and the partition plate 12 is realized, the heat exchange layer 11 and the partition plate 12 are not easily affected by high-temperature fluid to cause damage and drop, the service life of the plate-fin cooler is prolonged, and the production cost is saved.

Further, the embodiment 1 of the present invention provides a plate-fin cooler, preferably, referring to fig. 4, the inner wall of the cold-fin tube 142 is provided with a plurality of turbulators 1421, the turbulators 1421 and the cold-fin tube 142 are integrally formed, and the turbulators 1421 are hemispheroids protruding from the inner wall of the cold-fin tube 142. The embodiment 1 of the utility model provides a plate-fin cooler, through the turbolator 1421 that sets up a plurality of hemispheroids on cold fin pipe 142 inner wall, at implementation in-process, when the cold flow body flows in the cold flow passageway, continuously receives the hindrance of hemispherical protruding turbolator 1421 for the dwell time of cold flow body in the cold flow passageway increases, the hot-fluid can carry out the heat transfer with the cold flow body fully, improves plate-fin cooler's heat exchange efficiency. Meanwhile, the integrated design of the turbolator 1421 and the cold fin tube 142 facilitates processing and production, and reduces the assembly difficulty.

Referring to fig. 5, in the plate-fin cooler according to embodiment 1 of the present invention, preferably, the contact surface between the inner wall of the hot fin tube 141 and the outer wall of the cold fin tube 142 of each fin strip 14 is the bottom surface of the corresponding horn 1412, and a plurality of holes 1413 penetrating through the horn 1412 are equidistantly formed in each horn 1412 along a direction parallel to the bottom surface of the horn 1412. When implementing, after the hot-fluid entered the heat transfer layer 11 from the heat entering head, can shunt and get into a plurality of holes 1413 of seting up on the horn 1412, the hot-fluid in a plurality of holes 1413 is at the in-process that the heat flow channel was marchd, concentrates the heat transfer with the cold fluid that flows in the cold fin pipe 142 respectively, and is insufficient with heat transfer heat exchange efficiency, leads to the traditional cooler of wasting of resources to compare, the utility model provides a time that flow and hot-fluid that the flow of hot-fluid passed through the increase hot-fluid stopped in the heat flow channel for the hot-fluid has higher heat transfer comprehensive properties at the flow in-process, has increased the holistic heat transfer volume of plate fin cooler, thereby improves heat exchange efficiency effectively. The holes 1413 are parallel to the contact surface between the inner wall of the hot finned tube 141 of each fin strip 14 and the outer wall of the cold finned tube 142, so that after the hot fluid enters the hot flow channel, in each hot finned tube 141, as can be understood by referring to the movement direction of the hot fluid indicated by fig. 6, the split flow going to the holes above the hot finned tubes is decelerated and then accelerated in the hot finned tubes, and the split flow going to the holes below the hot finned tubes is accelerated and then decelerated, so that the hot fluid cannot exchange heat unevenly due to too fast speed on the whole, and the hot fluid cannot flow smoothly due to too slow speed. In addition, the equidistant hole opening mode has the advantage of being convenient for production and processing, and reduces the process difficulty of batch production.

The plate-fin cooler provided in embodiment 1 of the present invention preferably, referring to fig. 2, the hot-fin tube 141 and the cold-fin tube 142 are integrally formed. The design of the integral forming of the hot finned tube 141 and the cold finned tube 142 is convenient for production and processing and installation, reduces the difficulty of the assembly process, and reduces the production cost.

The preferred embodiments of the present invention have been described; it is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; the skilled person in the art, without affecting the essence of the invention, may make numerous possible variations and modifications, or may modify equivalent embodiments, without departing from the technical solution of the invention; therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.

Claims

1. A plate-fin cooler is characterized by comprising a cooler core body, a hot inlet end enclosure for inflow of hot fluid, a hot outlet end enclosure for outflow of the hot fluid, a cold inlet end enclosure for inflow of cold fluid and a cold outlet end enclosure for outflow of the cold fluid;

the cooler core comprises a plurality of layers of heat exchange layers, wherein each heat exchange layer comprises a hot flow channel for circulating hot fluid, a cold flow channel for cooling the hot fluid, a partition plate for separating each heat exchange layer and a seal strip for isolating the cold flow channel and the hot flow channel in each layer of the heat exchange layer; the heat inlet end socket is communicated with the heat outlet end socket through the heat flow channel; the cold inlet end socket is communicated with the cold outlet end socket through the cold flow channel; the heat exchange layer comprises a plurality of fin strips, and the fin strips comprise hot fin tubes through which a heat supply fluid flows and cold fin tubes through which a cold supply fluid flows;

the heat finned tube comprises a hollow cavity and six angle bodies, wherein the hollow cavity is in a hexagonal prism shape, the six angle bodies radiate outwards from the inner wall of the heat finned tube, the angle bodies are in a triangular prism shape, a plurality of holes are formed in the angle bodies, and the holes are communicated with one another to form a heat flow channel; the cold finned tube is hexagonal prism-shaped, the cold finned tube is arranged in the cavity, the outer wall of the cold finned tube is closely attached to the inner wall of the hot finned tube, and a plurality of cold finned tubes form a cold flow channel.

2. The plate fin cooler of claim 1, wherein the heat fin tube has a regular hexagonal prism shape, the cavity has a regular hexagonal prism shape, and the horn has a regular triangular prism shape; the cold finned tube is in a regular hexagonal prism shape.

3. The plate fin cooler of claim 2, wherein the corner bodies of the hot-fin tube comprise a first connecting corner body and a second connecting corner body, and the first connecting corner body and the second connecting corner body are correspondingly arranged along a direction perpendicular to the tube axis of the cold-fin tube; the first connecting angle body is provided with a first V-shaped groove; and a second V-shaped groove is formed in the second connecting angle body.

4. The plate-fin cooler according to claim 1, wherein a plurality of turbulators are arranged on the inner wall of the cold-fin tube, the turbulators and the cold-fin tube are integrally formed, and the turbulators are hemispheres protruding out of the inner wall of the cold-fin tube.

5. The plate-fin cooler according to any one of claims 1 to 4, wherein a contact surface between an inner wall of the hot fin tube and an outer wall of the cold fin tube of each fin strip is a bottom surface of the corresponding horn, and a plurality of holes penetrating through the horn are equidistantly formed in each horn along a direction parallel to the bottom surface of the horn.

6. The plate fin cooler of claim 5, wherein the hot fin tube is integrally formed with the cold fin tube.