CN220339164U - Multi-chamber heat exchanger - Google Patents

Abstract

The utility model discloses a multi-chamber heat exchanger which is characterized by comprising a heat exchanger shell, wherein a middle cavity is divided into a first heat exchange cavity and a second heat exchange cavity by a partition plate in the shell, a steam inlet and a condensate outlet are arranged on two sides of the shell, the steam inlet is arranged above the shell, and the condensate outlet is arranged below the shell; and a set of heat exchange pipes are arranged in the first heat exchange chamber and the second heat exchange chamber, and each set of heat exchange pipes comprises a steam inlet main pipe, a condensate water main pipe, a plurality of fin pipes and fin pipe elbows. According to the utility model, through arranging the first heat exchange chamber and the second heat exchange chamber, the drying quality is ensured, and meanwhile, the design volume of the oven is saved; the symmetrical heat exchange pipes are arranged inside the heat exchange device, so that the uniformity of heat exchange is improved, and meanwhile, the phenomenon of water hammer is avoided.

Description

Multi-chamber heat exchanger

Technical Field

The utility model relates to the technology of oven heat exchanger equipment, in particular to a multi-cavity heat exchanger.

Background

In the manufacturing process of the pole piece and the diaphragm of the lithium battery, slurry is coated on the surface of a base material, and the base material is dried by an oven. At present, the pole piece drying mainly takes hot air drying as a main part, and the heat exchange is carried out on fresh air sucked by a fresh air fan through a heat exchanger.

The pole piece drying process has upper and lower stage tape running, and every required temperature is different and drying condition is different, and required temperature is inconsistent, needs a plurality of heat exchangers to realize different temperature heating, uses a plurality of heat exchangers occupation space great, and a heat exchanger can't reach different temperature effects.

The existing heat exchanger adopts a heat exchange tube which is repeatedly arranged in an S shape to heat the air passing through the straight tube section of the heat exchange tube, and in the heat exchange process, a heat exchange medium (commonly used as water vapor) in a pipeline is condensed into liquid from gas, the content of the water vapor is reduced in the latter half section of the heat exchange tube, the heat exchange capability is weakened, uneven heat exchange to the air is caused, and the drying consistency is affected. And the condensed water flows in a longer heat exchange pipeline and is continuously accelerated under the action of gravity, so that the condensed water impacts the pipe wall at the bent pipe to cause the phenomenon of water hammer, and the service life of the heat exchanger is reduced.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the multi-chamber heat exchanger, which is characterized in that the first heat exchange chamber and the second heat exchange chamber are arranged, so that the drying quality is ensured, and meanwhile, the design volume of an oven is saved; the symmetrical heat exchange pipes are arranged inside the heat exchange device, so that the uniformity of heat exchange is improved, a large amount of accumulated water is avoided, the phenomenon of water hammer is aggravated, and the safety of equipment is improved.

The technical scheme adopted for solving the technical problems is as follows:

the multi-chamber heat exchanger comprises a shell, wherein a middle cavity is divided into a first heat exchange cavity and a second heat exchange cavity by a partition plate in the shell, steam inlets and condensate water outlets are formed in two sides of the shell, the steam inlets are arranged above the shell, and the condensate water outlets are arranged below the shell; and a set of heat exchange pipes are arranged in the first heat exchange chamber and the second heat exchange chamber, and each set of heat exchange pipes comprises a steam inlet main pipe, a condensate water main pipe, a plurality of fin pipes and fin pipe elbows.

As a further improvement of the above technical solution, the heat exchange tubes are respectively mirror images and are independently arranged in the first heat exchange chamber and the second heat exchange chamber.

As a further improvement of the technical scheme, the steam inlet main pipe and the condensate water main pipe are two straight pipes which are arranged in parallel and vertically; the upper part of the steam inlet main pipe is connected with the steam inlet, and the lower part of the condensed water main pipe is connected with the condensed water outlet.

As a further improvement of the technical scheme, the fin tubes are connected with the fin tube elbows, a plurality of fin tubes and a plurality of fin tube elbows are connected to form a middle heat exchange tube, and the middle heat exchange tube is S-shaped and is respectively arranged in the first heat exchange chamber and the second heat exchange chamber.

As a further improvement of the technical scheme, four fin tubes of each section of the middle heat exchange tube are arranged in parallel and are positioned in the same inclined plane with a certain inclination angle.

As a further improvement of the technical scheme, the steam inlet main pipe and the condensate water main pipe are provided with a plurality of through holes; the inlets of the middle heat exchange tubes of each group are connected with the through holes of the steam inlet main pipe, and the outlets of the middle heat exchange tubes of each group are connected with the through holes of the condensate water main pipe.

As a further improvement of the technical scheme, the uppermost and lowermost two sections of the middle heat exchange tubes are provided with two fin tubes and two fin tube bends.

As a further improvement of the above technical solution, the fin tube bends are provided in the housing and in the partition plate.

As a further improvement of the technical scheme, the shell and the partition plate around the multi-chamber heat exchanger are heat insulation layers.

As a further improvement of the technical scheme, four corners of the bottom of the multi-chamber heat exchanger are provided with fixing brackets; the air inlet of the multi-chamber heat exchanger is provided with an air inlet butt flange, and the air outlet of the multi-chamber heat exchanger is provided with an air outlet butt flange.

The beneficial effects of the utility model are as follows: through setting up first heat transfer cavity and second heat transfer cavity on the heat exchanger, can improve heat exchange efficiency and homogeneity, reduce the heat exchanger volume. Meanwhile, the heat exchange pipes which are symmetrically arranged can be independently adjusted, so that the requirements of different heat exchange temperatures can be met, and the design volume of the oven is saved while the drying effect is ensured. The design multistage middle part heat exchange tube, through the overall arrangement mode of the mutual combination of fin tube and fin tube bend, improve the homogeneity of heat transfer, avoid taking place the heat exchange tube overlength and take place the water hammer phenomenon simultaneously, improve heat exchanger life-span, be convenient for drainage.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the assembly of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic illustration of the internal piping of the present utility model;

FIG. 5 is a side view of the inner conduit of the present utility model;

fig. 6 is a side view of the present utility model.

Reference numerals illustrate: 100-heat exchanger housing; 110-a separator; 120-a first heat exchange chamber; 130-a second heat exchange chamber; 140-air inlet butt flange; 150-an air outlet butt flange; 160-an insulating layer; 200-steam inlet; 300-a condensate outlet; 400-heat exchange tubes; 410-steam header; 420-a condensate header; 430-finned tube; 440-fin tube bends; 500-fixing the bracket.

Detailed Description

The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the utility model can be interactively combined on the premise of no contradiction and conflict.

Example 1

Referring to fig. 1 to 2, the present utility model provides a multi-chamber heat exchanger including a heat exchanger housing 100 having a heat exchanger chamber therein and heat exchange tubes 400. The heat exchanger cavity is divided into a first heat exchange cavity 120 and a second heat exchange cavity 130 through the partition plate 110, the first heat exchange cavity 120 and the second heat exchange cavity 130 are respectively arranged on the left side and the right side, the heat exchange pipes 400 are respectively arranged in the two heat exchange cavities, the temperatures of the two heat exchange cavities can be independently controlled, and the heat exchanger is suitable for heating in different stages, so that different heating effects are achieved. The partition plate 110 between the two heat exchange chambers is an air heat insulation layer, so that the air between the two chambers is prevented from exchanging heat mutually, and the heat exchange efficiency is reduced.

Further, the first heat exchange chamber 120 and the second heat exchange chamber 130 can be separated from each other by the middle transverse partition 110, and are suitable for heat exchange at different stages on the upper side and the lower side.

Wherein, the first heat exchange chamber 120 and the second heat exchange chamber 130 are respectively provided with a set of heat exchange tubes 400, and the two sets of heat exchange tubes 400 are distributed in a mirror image manner. The heat exchange tubes 400 are uniformly arranged in the heat exchange chamber, and air entering the heat exchange chamber reaches a heating effect through the heat exchange tubes 400. Two heat exchange chambers and two sets of heat exchange pipes 400 are symmetrically arranged, so that the heat exchange efficiency and uniformity are improved, the volume of the heat exchanger is reduced, the drying quality is ensured, and meanwhile, the design volume of the oven is saved. Meanwhile, the two sets of heat exchange tubes 400 can be independently adjusted, and the requirements of different stages in the oven can be met.

A steam inlet 200 and a condensed water outlet 300 are arranged on both sides of the heat exchanger shell 100, and the steam inlet 200 and the condensed water outlet 300 are connected with a heat exchange tube 400 in the heat exchange cavity. The steam outlet is arranged above the shell and is used for conveying high-temperature steam to the heat exchange tube 400 in the heat exchanger, so that the temperature of the heat exchange tube 400 passing through the heat exchanger is increased, and the temperature of the air passing through the heat exchanger is increased after the air contacts the heat exchange tube 400; the condensed water outlet is arranged below to remove the condensed water formed after the temperature of the steam is reduced, and the cooled condensed water is heavier than the steam in mass, so that the condensed water outlet 300 is arranged below to conveniently collect the condensed water formed after the temperature of the steam in the heat exchange tube 400.

Example two

The heat exchanger chamber in the embodiment of the present utility model may be divided into a plurality of chambers by a plurality of partitions 110, and when two partitions 110 are provided, the heat exchanger chamber is divided into a first heat exchange chamber 120, a second heat exchange chamber 130 and a third heat exchange chamber. The number of baffles 110 is increased in turn, corresponding to the number of heat exchange chambers being increased in turn, each chamber being independently temperature controllable. Each heat exchange chamber is provided with a heat exchange tube 400, a steam inlet 200 and a condensate outlet 300. Wherein, the steam inlet 200 and the condensed water outlet 300 of the cavities at both sides are respectively arranged on the outer shell 100 at both sides; the steam inlet 200 and the condensed water outlet 300 of the chamber in the middle portion are provided on the housing 100 at the upper and lower positions, respectively.

Further, when the heat exchanger chamber is divided into a plurality of chambers by a plurality of transverse partitions, the plurality of heat exchange chambers may be disposed in parallel up and down in the transverse direction, and the two side cases 100 are correspondingly provided with a plurality of steam inlets 200 and condensate outlets 300. The heat exchange tubes 400 correspondingly arranged inside can be independently adjusted, and the requirements of different stages in the oven can be met.

Example III

Referring to fig. 3 to 5, the heat exchange tube 400 in the heat exchange chamber includes a steam header 410, a condensate header 420, a plurality of fin tubes 430, and a plurality of fin tube bends 440. Preferably, the steam header pipe 410 and the condensed water header pipe 420 are two straight pipes, and the two straight pipes are vertically and parallelly arranged. The upper part of the steam header pipe 410 is connected with the steam inlet 200, and the lower part of the condensed water header pipe 420 is connected with the condensed water outlet. Wherein, the steam header pipe 410 and the condensed water header pipe 420 are also provided with a plurality of through holes, and the through holes are uniformly and vertically arranged on the steam header pipe 410 and the condensed water header pipe 420 in a row. The through holes are connected with the finned tubes 430, the steam header 410 uniformly distributes and conveys steam into the finned tubes 430 through the through holes, and the condensation header collects and gathers condensed water in the finned tubes 430 through the through holes.

Further, the finned tubes 430 in the heat exchange tube 400 are connected with the finned tube bends 440 and uniformly distributed in the cavities of the first heat exchange chamber 120 and the second heat exchange chamber 130, and air enters the first heat exchange chamber 120 and the second heat exchange chamber 130 to contact with the finned tubes 430 so as to heat the air. The heat exchange tube 400 increases a heat exchange area using the fin tube 430, and can increase heat exchange efficiency. Wherein, a set of middle heat exchange tubes 400 is formed by a plurality of fin heat exchange tubes 400 and a plurality of fin tube bends 440. In the embodiment of the utility model, four fin heat exchange tubes 400 and three fin tube bends 440 are alternately connected to form a set of middle heat exchange tubes 400. The middle heat exchange tube 400 is arranged in the first heat exchange chamber 120 and the second heat exchange chamber 130 in an S shape, and the inlet and the outlet of the middle heat exchange tube 400 are fin heat exchange. Wherein, the inlet of the middle heat exchange tube 400 is communicated with the through hole of the steam header 410, and the outlet of the middle condensing tube is communicated with the through hole of the condensed water header 420.

Because the through holes of the steam header pipe 410 and the condensed water header pipe 420 are arranged at different positions, the four fin tubes 430 of the middle heat exchange tube 400 in each section are arranged in parallel and all are positioned in the same inclined plane with a certain inclination angle. The direction of inclination is inclined downwardly from the inlet direction of connection with the steam header 410 to the outlet direction of connection with the condensate header 420, with the intermediate fin tube bends 440 also inclined at the same angle. The middle heat exchange tubes 400 of each section are inclined at the same angle and at the same interval, and are uniformly distributed in the first heat exchange chamber 120 and the second heat exchange chamber 130. The inlet of the middle heat exchange tube 400 is higher than the outlet in each section, so that condensed water is conveniently discharged.

Further, the two fin tubes 430 and the two fin tube bends 440 are respectively provided at the uppermost and lowermost middle heat exchange tubes 400 in the chamber, so that the coverage area of the fin tubes 430 to the heat exchange chamber can be ensured, and the heat exchange uniformity can be ensured. With the fin tube bends 440 disposed within the housing and the baffle 110, only the fin tubes 430 are disposed within the first heat exchange chamber 120 and the second heat exchange chamber 130. The fin tube bends 440 may make the air contact area nonuniform, resulting in nonuniform heat exchange, and the straight tube fin tubes 430 can ensure uniformity of the air contact area and uniformity of heat exchange.

After entering the steam header pipe 410 from the steam inlet 200, the steam flows into the middle heat exchange tubes 400 of different sections through a plurality of through holes of the steam header pipe 410, exchanges heat with air in the heat exchange cavity through the fin tubes 430, is converged into the condensed water header pipe 420 from the outlets of the middle heat exchange tubes 400 of each section, is discharged from the condensed water outlet at the lower end of the condensed water header pipe 420, is repeatedly heated and gasified into steam, and then enters the next heat exchange cycle. The multi-section middle heat exchange tube 400 and the plurality of through holes formed in the steam header pipe 410 and the condensed water header pipe 420 are used in the oven, so that the overlong heat exchange tube 400 can be avoided, the phenomenon that condensed water is accumulated in the longer heat exchange tube 400 to aggravate water hammer is avoided, and the service life and the safety of the device can be improved.

Still further, the outer shell around the multi-chamber heat exchanger and the partition plate 110 are both the heat insulation layer 160, and the fin tube elbow 440, the steam header pipe 410 and the condensing header pipe are all arranged in the heat insulation layer 160, so that the temperature of steam can be ensured in the process of entering the heat exchanger, and the heat exchange with external air is avoided, so that the temperature heat exchange efficiency is reduced.

With reference to fig. 3 and 6, the air inlet and the air outlet of the multi-chamber heat exchanger, which are provided with air inlet butt flange 140, are provided with air outlet butt flange 150, and are connected with the front-back device through the butt flange, so that the tightness of the air in the ventilation process is ensured, and the ventilation efficiency is ensured. Simultaneously, the bottom of multicavity room heat exchanger is equipped with fixed bolster 500, and fixed bolster 500 establishes in the four corners of shell, through four corners fixing device, guarantees the stability of installation. The top of shell still is equipped with two hanging hole, conveniently installs and carries the device.

According to the utility model, the heat exchanger is provided with the multiple chambers, so that the heat exchange efficiency and uniformity can be improved, and the volume of the heat exchanger is reduced. The heat exchange pipes in each heat exchange cavity can be independently adjusted, the requirements of different heat exchange temperatures can be met, the requirements of different stages in the oven can be met, and the design volume of the oven is saved while the drying effect is ensured. The design of the multi-section middle heat exchange tube 400 improves the uniformity of heat exchange by the mutual combination of the fin tube 430 and the fin tube elbow 440, and simultaneously avoids the phenomenon of water hammer aggravated by overlong heat exchange tube 400, improves the service life of the heat exchanger and facilitates drainage.

While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The multi-cavity heat exchanger is characterized by comprising a shell, wherein a middle cavity is divided into a first heat exchange cavity and a second heat exchange cavity by a partition plate in the shell, a steam inlet and a condensate water outlet are arranged on two sides of the shell, the steam inlet is arranged above the shell, and the condensate water outlet is arranged below the shell; and a set of heat exchange pipes are arranged in the first heat exchange chamber and the second heat exchange chamber, and each set of heat exchange pipes comprises a steam inlet main pipe, a condensate water main pipe, a plurality of fin pipes and fin pipe elbows.

2. The multi-chamber heat exchanger of claim 1, wherein the heat exchange tubes are mirror images and are independently disposed in the first and second heat exchange chambers, respectively.

3. The multi-chamber heat exchanger of claim 1, wherein the steam inlet header and the condensate header are two straight tubes arranged in parallel; the upper part of the steam inlet main pipe is connected with the steam inlet, and the lower part of the condensed water main pipe is connected with the condensed water outlet.

4. A multi-chamber heat exchanger as claimed in claim 3 wherein the fin tubes are connected to the fin tube bends, and a central heat exchange tube is formed by connecting a plurality of the fin tubes to a plurality of the fin tube bends, and the central heat exchange tube is S-shaped and disposed in the first heat exchange chamber and the second heat exchange chamber, respectively.

5. The multi-chamber heat exchanger according to claim 4, wherein four of the fin tubes of each of the intermediate heat exchange tubes are disposed in parallel and are located in the same inclined plane having a certain inclination angle.

6. The multi-chamber heat exchanger of claim 4, wherein the inlet header and the condensate header are each provided with a plurality of through holes; the inlets of the middle heat exchange tubes of each group are connected with the through holes of the steam inlet main pipe, and the outlets of the middle heat exchange tubes of each group are connected with the through holes of the condensate water main pipe.

7. A multi-chamber heat exchanger according to claim 4 wherein there are two more fin tubes and two fin tube bends in the uppermost and lowermost two sections of the intermediate heat exchange tubes.

8. A multi-chamber heat exchanger according to claim 1, wherein the fin tube bends are disposed within the housing and the baffle.

9. The multi-chamber heat exchanger of claim 1, wherein the housing and the separator around the multi-chamber heat exchanger are both insulation layers.

10. The multi-chamber heat exchanger according to claim 1, wherein four corners of the bottom of the multi-chamber heat exchanger are provided with fixing brackets; the air inlet of the multi-chamber heat exchanger is provided with an air inlet butt flange, and the air outlet of the multi-chamber heat exchanger is provided with an air outlet butt flange.