阅读说明：本技术 废气换热用板翅换热器 (Plate-fin heat exchanger for waste gas heat exchange ) 是由 王秀丽 刘蛟 韩彬 史坤昊 于 2021-09-02 设计创作，主要内容包括：本发明涉及换热器的领域,尤其是涉及一种废气换热用板翅换热器,其包括分别设置在内通道内和外通道内的滑动刮料组件,滑动刮料组件包括若干个滑移在对应通道内的刮片,若干个刮片沿对应通道的长度方向设置,刮片与对应的隔板、刮片与对应的翅片均紧贴,刮片上开有多个过水孔,相邻两个刮片之间设置有压簧,内通道和所述外通道的两端均设置有固定板且之间具有间距,滑动刮料组件最两端的刮片分别通过压簧设置在对应的固定板上。本申请具有方便清除杂质的优点。(The invention relates to the field of heat exchangers, in particular to a waste gas heat exchange plate-fin heat exchanger which comprises sliding scraping components arranged in an inner channel and an outer channel respectively, wherein each sliding scraping component comprises a plurality of scraping blades sliding in the corresponding channel, the scraping blades are arranged along the length direction of the corresponding channel, the scraping blades are tightly attached to corresponding partition plates and corresponding fins, a plurality of water through holes are formed in the scraping blades, a pressure spring is arranged between every two adjacent scraping blades, fixed plates are arranged at two ends of the inner channel and two ends of the outer channel respectively, a distance is reserved between the fixed plates, and the scraping blades at the two ends of the sliding scraping components are arranged on the corresponding fixed plates through the pressure springs respectively. This application has the advantage of conveniently cleaing away impurity.)

1. A plate-fin heat exchanger for waste gas heat exchange is characterized in that: including setting up respectively in the passageway and the outer passageway slip scraping assembly, the slip scraping assembly includes that a plurality of slides doctor-bar (71) in corresponding the passageway, a plurality of doctor-bar (71) set up along the length direction who corresponds the passageway, doctor-bar (71) and the baffle that corresponds doctor-bar (71) all hug closely with the fin that corresponds, it has a plurality of water holes (711), adjacent two to open on doctor-bar (71) be provided with pressure spring (72) between doctor-bar (71), the interior passageway with the both ends of outer passageway all are provided with fixed plate (73) and have the interval between, the slip is scraped the material subassembly and is most both ends doctor-bar (71) pass through respectively pressure spring (72) set up corresponding on fixed plate (73).

2. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 1, characterized in that: the scraping blade (71) is coated with a wear-resistant smooth layer.

3. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 1, characterized in that: the positions of the outer fins (5) and the inner fins (3) relative to the two ends of each channel are connected with limiting strips (8).

4. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 1, characterized in that: the feed liquor end of outer passageway with go out the liquid end the feed liquor end of interior passageway all communicates with play liquid end and has inside hollow kuppe (9), every kuppe (9) all communicate with adjustable speed's two-way water pump (10), fixed plate (73) fixed connection is corresponding in kuppe (9), it has a plurality of through-holes (731) to open on fixed plate (73).

5. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 4, wherein: the air guide sleeve (9) is gradually reduced along the direction caliber far away from the corresponding channel, a plurality of guide plates (11) are arranged in each air guide sleeve (9), and the distance between every two adjacent guide plates (11) is gradually reduced along the direction far away from the corresponding channel.

6. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 1, characterized in that: the side wall of the water inlet end of the channel corresponding to the partition board is provided with a water channel, the water channel is formed along the length direction of the channel corresponding to the partition board, the other side of the partition board, which is opposite to the water channel, is closed, the partition board is provided with a plurality of side punched holes (142), and the side punched holes (142) are communicated with the water channel, the side punched holes (142) and the corresponding channels.

7. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 6, characterized in that: the open end of the water channel is provided with a first filter cloth (12), and one side of the inner wall of the water channel, which corresponds to the fins, is provided with a second filter cloth (13).

8. The plate-fin heat exchanger for exhaust gas heat exchange according to claim 6, characterized in that: the baffle comprises two plate bodies (14) which are tightly attached and detachably connected, and the water channel comprises water tanks (141) which are respectively arranged on the two mutually tightly attached side walls of the plate bodies (14).

Technical Field

The invention relates to the field of heat exchangers, in particular to a plate-fin heat exchanger for waste gas heat exchange.

Background

Plate-fin heat exchangers are generally composed of partitions, fins, seals, and guide vanes. The fins, the flow deflectors and the sealing strips are arranged between two adjacent partition plates to form an interlayer, called a channel, the interlayer is overlapped according to different fluid modes and brazed into a whole to form a plate bundle, and the plate bundle is the core of the plate-fin heat exchanger.

Chinese patent No. CN210533124U discloses an aluminum plate-fin fuel cooler, which comprises a cooler box body with a cooler core body arranged therein, wherein the cooler core body comprises two side plates which are vertically spaced and oppositely arranged, inner channel assemblies and outer channel assemblies are uniformly and alternately distributed between the two side plates from top to bottom, a partition plate is arranged between the inner channel assemblies and the outer channel assemblies, and the partition plates and the side plates are arranged in parallel; the inner channel assembly consists of inner fins and long sealing strips on the left side and the right side of the inner fins, and inner channels which are in front-back directions are arranged in the inner fins; the outer channel assembly consists of an outer fin and short seals at the front side and the rear side of the outer fin; outer channels which are in left and right directions are arranged in the outer fins; the inner channel assembly and the outer channel assembly are in a vertical structure which is overlapped up and down.

In the use process of the cooler, fluid passes through the inner channel and the outer channel, but the fluid may contain impurities, and the impurities are attached to the corresponding partition plates, the inner fins and the outer fins and gradually increase along with the lapse of time, so that the heat exchange effect is affected.

For this reason, when the cooler is used for a certain period of time, it is necessary to disassemble it and remove impurities. At present, impurities on the partition plate, the inner fin and the outer fin are usually removed one by one manually by workers, certain inconvenience exists, and obvious defects exist.

Disclosure of Invention

In order to conveniently remove impurities, the application provides a plate-fin heat exchanger for waste gas heat exchange.

The application provides a waste gas heat transfer plate-fin heat exchanger adopts following technical scheme:

a plate-fin heat exchanger for waste gas heat exchange comprises sliding scraping components arranged in an inner channel and an outer channel respectively, wherein each sliding scraping component comprises a plurality of scraping blades sliding in a corresponding channel, the scraping blades are arranged along the length direction of the corresponding channel, the scraping blades are tightly attached to corresponding partition plates and corresponding fins, a plurality of water passing holes are formed in the scraping blades, a pressure spring is arranged between every two adjacent scraping blades, fixed plates are arranged at two ends of the inner channel and the outer channel respectively, and a distance is reserved between the fixed plates, and the scraping blades at the two ends of the sliding scraping components are arranged on the corresponding fixed plates through the pressure springs respectively.

Through adopting above-mentioned technical scheme, during the clearance, the workman dismantles the heat exchanger and forward intercommunication in the water system among the prior art, and the clear water gets into outer passageway and interior passageway in, passes from the water hole of crossing on each doctor-bar in proper order, flows out outer passageway and interior passageway. The clear water can form certain impact to the doctor-bar at the in-process that flows in the passageway, and the doctor-bar receives the impact of clear water and takes place certain slip along the flow direction of clear water to scrape down the impurity that will adhere to on baffle and fin, the clear water will be scraped impurity and take out the heat exchanger. Then the heat exchanger is reversely communicated in a water system, so that the scraping blade reversely scrapes impurities, and further the completeness of impurity scraping is improved. Through foretell mode, need not the split heat exchanger, just can clear away its inside impurity, convenient operation has just saved manual work and time.

Optionally, the wiper blade is coated with a wear resistant smooth layer.

Through adopting above-mentioned technical scheme, the smooth layer of inner membrance has increased the surface smoothness of doctor-bar to this makes that the doctor-bar can be more smooth and easy slide in the passageway that corresponds.

Optionally, the positions of the outer fin and the inner fin relative to the two ends of each channel are both connected with a limiting strip.

Through adopting above-mentioned technical scheme, spacing strip plays limiting displacement to the doctor-bar, is favorable to reducing the doctor-bar under the impact of clear water, removes the possibility that corresponds the passageway.

Optionally, the feed liquor end of outer passageway with go out the liquid end the feed liquor end of interior passageway all communicates with play liquid end and has inside hollow kuppe, every the kuppe all communicates with adjustable speed's two-way water pump, fixed plate fixed connection is in corresponding in the kuppe, it has a plurality of through-holes to open on the fixed plate.

Through adopting above-mentioned technical scheme, the velocity of flow of clear water can be adjusted to two-way water pump to this slip range of adjusting the doctor-bar in corresponding the passageway is favorable to improving the doctor-bar and strikes off the effect to impurity.

Optionally, the aperture of the air guide sleeve decreases gradually along the direction away from the corresponding channel, each air guide sleeve is internally provided with a plurality of air guide plates, and the distance between two adjacent air guide plates decreases gradually along the direction away from the corresponding channel.

Through adopting above-mentioned technical scheme, the guide plate plays the guide effect to the flow of medium to this makes in the medium can more evenly and smoothly flows into whole heat exchanger, can also reduce the medium striking fixed plate back simultaneously, produces the possibility of indiscriminate flow.

Optionally, a water channel is formed in the side wall of the partition board corresponding to the water inlet end of the channel, the water channel is formed in the length direction of the partition board corresponding to the channel, the other side of the partition board corresponding to the water channel is sealed, a plurality of side punched holes are formed in the partition board, and the side punched holes are communicated with the water channel and the side punched holes and the corresponding channel.

Through adopting above-mentioned technical scheme, when impurity is clear away to the forward, clear water gets into the water course from the kuppe in, then punches a hole through the side and spouts to piling up the impurity in corresponding the passageway for impurity is the turnover that does not stop in the passageway, makes the clear water take the heat exchanger out of impurity more easily with this.

Optionally, the open end of the water channel is provided with a first filter cloth, and one side of the inner wall of the water channel, which corresponds to the fins, is provided with a second filter cloth.

Through adopting above-mentioned technical scheme, first filter cloth and the cooperation of second filter cloth can reduce and pile up in the water course to influence the clear water from the possibility of side blow hole blowout.

Optionally, the partition plate comprises two plate bodies which are tightly attached and detachably connected, and the water channel comprises water grooves which are respectively formed in the two plate bodies, wherein the two plate bodies are tightly attached to the side wall.

Through adopting above-mentioned technical scheme, the workman can be more convenient realize changing the second filter cloth.

In summary, the present application includes at least one of the following beneficial technical effects:

1. clear water flows in the channel in the forward and reverse directions to drive the scraping blades to move, so that impurities attached to the partition plates and the fins are scraped, and meanwhile, the scraped impurities can be taken out of the heat exchanger by the flowing clear water, so that the impurities can be removed without disassembling the heat exchanger, the operation is convenient, and labor and time are saved;

2. the bidirectional water pump can adjust the flow rate of the clear water so as to adjust the sliding range of the scraping blade in the corresponding channel, thereby being beneficial to improving the scraping effect of the scraping blade on impurities;

3. when impurity is clear away to the forward, clear water is followed the kuppe and is got into in the water course, then punches a hole through the side and spouts to piling up the impurity in corresponding the passageway for impurity incessantly overturns in the passageway, makes the clear water take impurity out of heat exchanger more easily with this.

Drawings

FIG. 1 is a schematic structural diagram for embodying the present application;

FIG. 2 is a schematic structural diagram illustrating the connection among the fixing plate, the compression spring and the side plates in the present application;

fig. 3 is an exploded view for illustrating the connection relationship among the plate body, the second filter cloth, and the inner fin in the present application;

fig. 4 is an exploded view for illustrating a connection relationship among a plate body, a second filter cloth, and an outer fin in the present application;

FIG. 5 is a schematic structural diagram showing the connection relationship among the outer fins, the position-limiting strips, the compression springs and the scraping blades in the present application;

fig. 6 is an exploded view for showing the connection relationship among the air guide sleeve, the air guide plate and the fixing plate in the present application.

Description of reference numerals: 1. a cooler box; 2. a side plate; 3. an inner fin; 4. a long seal; 5. an outer fin; 6. a short seal; 71. scraping a blade; 711. water passing holes; 72. a pressure spring; 73. a fixing plate; 731. a through hole; 8. a limiting strip; 9. a pod; 10. a bidirectional water pump; 11. a baffle; 12. a first filter cloth; 13. a second filter cloth; 14. a plate body; 141. a water tank; 142. and (6) side punching.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a plate-fin heat exchanger for waste gas heat exchange. Referring to fig. 1 and 2, the plate-fin heat exchanger for waste gas heat exchange includes a cooler case 1 having a hollow interior, and a cooler core is disposed in the cooler case 1.

Referring to fig. 1 and 2, the cooler core comprises two side plates 2 which are arranged up and down and are opposite to each other at intervals, inner channel assemblies and outer channel assemblies are uniformly distributed between the two side plates 2 in an up-down alternative mode, and the inner channel assemblies and the outer channel assemblies are in a vertical stacking structure.

Referring to fig. 3 and 4, the inner channel assembly includes an inner fin 3, long seals 4 located on the left and right sides of the inner fin 3, and partition boards located on the upper and lower sides of the inner fin 3, and an inner channel extending in the front-rear direction is provided in the inner fin 3.

The outer channel assembly comprises outer fins 5 and short seal strips 6 located on the front side and the rear side of each outer fin 5, partition plates are arranged on the upper side and the lower side of each outer fin 5, and outer channels moving left and right are arranged in the outer fins 5.

Referring to fig. 2 and 5, the plate-fin heat exchanger for exhaust gas heat exchange further includes sliding scraper assemblies respectively disposed in the inner and outer passages, the sliding scraper assemblies including a scraper 71, a compression spring 72, and a fixing plate 73.

The scraping sheets 71 are in sliding fit with the corresponding channels, the scraping sheets 71 are tightly attached to the corresponding partition plates, the scraping sheets 71 are tightly attached to the corresponding fins, and a plurality of the scraping sheets 71 are arranged along the length direction of the corresponding channels.

The doctor blade 71 is coated with a wear-resistant smooth layer (not shown) which increases the smoothness of the blade surface, so that the doctor blade 71 can slide more smoothly in the corresponding channel.

Each scraping piece 71 is provided with a plurality of water holes 711, and one pressure spring 72 is fixedly connected between any two adjacent scraping pieces 71.

Referring to fig. 2 and 5, one fixing plate 73 is provided at both ends of the inner and outer passages with a space between the ends of the inner and outer passages and the corresponding fixing plate 73. The scraping blades 71 at the two ends of the sliding scraping component are fixedly connected to the corresponding fixing plates 73 through compression springs 72 respectively.

Referring to fig. 4 and 5, during cleaning, the cleaning personnel remove the heat exchanger and forward communicate it to the water system (not shown) of the prior art, allowing the fresh water to flow in a forward direction within the cooler core.

The clean water enters the outer channel from the water inlet of the outer channel, then sequentially passes through the water through holes 711 on each scraping blade 71 and flows out from the water outlet of the outer channel.

Because the clear water has certain velocity of flow in the outer passageway in-process, consequently can exert certain thrust to doctor-bar 71, doctor-bar 71 realizes sliding to the direction that is close to outer passageway water outlet end under the effect of thrust, and pressure spring 72 that is close to outer passageway water inlet end is drawn simultaneously, and pressure spring 72 that is close to outer passageway water outlet end is compressed.

In the process that the scraping sheet 71 slides, impurities attached to the corresponding partition plate and the outer fin 5 can be scraped, and the scraped impurities can be taken out of the cooler core body through the water passing holes 711 by clean water, so that the impurities can be cleaned in the forward direction.

When the clean water stops flowing in the channel in the positive direction, the deformation force of the compression spring 72 drives each scraping blade 71 to automatically reset. Due to the limited flow rate of the fresh water, the range of unidirectional sliding of the individual wiper blades 71 is limited, for which a reverse cleaning is also necessary.

During reverse clearance, only need with the heat exchanger reverse intercommunication in water system for clear water is reverse to flow in the outer passageway, and doctor-bar 71 is reverse to be slided, and doctor-bar 71 can reverse the scraping impurity.

The principle and the method for clearing impurities from the inner channel and the outer channel are communicated, so that the impurities in the channel can be cleared through the forward and reverse material scraping movement of the sliding material scraping assembly on the channel, and the heat exchange effect of the heat exchanger is further improved.

When impurity is cleared away to the realization of heat exchanger through foretell mode, scrape the material subassembly with the help of the slip and clear away impurity realization, need not the manual work and realize wasing alone every part with the heat exchanger split, convenient operation, and can save the manual work and the time that consume.

Referring to fig. 3 and 5, the positions of the outer fin 5 and the inner fin 3 relative to the two ends of each channel are fixedly connected with a limiting strip 8, and the limiting strips 8 are used for limiting the scraping blade 71, so that the possibility that the scraping blade 71 slides out of the corresponding channel and is difficult to automatically reset in the forward and reverse movement process is reduced.

Referring to fig. 1 and 6, the cooler case 1 is communicated with a material guide cover with a hollow interior at the positions corresponding to the inner channel water inlet end, the inner channel water outlet end, the outer channel water inlet end and the outer channel water outlet end, the fixing plate 73 is fixedly connected in the corresponding air guide cover 9, and the fixing plate 73 is provided with a plurality of through holes 731.

After entering the pod 9, the clean water passes through the through hole 731 of the fixing plate 73 and then flows into the corresponding channel.

Referring to fig. 5 and 6, each air guide sleeve 9 is communicated with a speed-adjustable bidirectional water pump 10 in the prior art, and the flow speed of the clear water is adjusted through the arrangement of the bidirectional water pump 10, so that the length of a moving path of the scraping blade 71 in the corresponding channel can be adjusted, and the impurity scraping effect is improved.

Referring to fig. 5 and 6, the air guide sleeve 9 is in a quadrangular frustum pyramid shape and gradually decreases along the caliber of the direction away from the corresponding channel, a plurality of air guide plates 11 are fixedly connected in each air guide sleeve 9, and the distance between two adjacent air guide plates 11 gradually decreases along the direction away from the corresponding channel.

The guide plate 11 guides the flow of the medium, so that the medium can flow into the whole cooler core body uniformly and smoothly, and the possibility of generating turbulent flow after the medium impacts the fixed plate 73 can be reduced.

Referring to fig. 4 and 5, since the foreign substances scraped by the blade 71 have a certain volume, the foreign substances are easily accumulated in the passage by gravity and cause clogging.

Therefore, a water channel is formed in the side wall of the water inlet end of the corresponding channel of the partition plate, the water channel is formed in the length direction of the corresponding channel of the partition plate, the other side of the partition plate, opposite to the water channel, is closed, a plurality of side punched holes 142 are formed in the partition plate, and the side punched holes 142 are communicated with the water channel, the side punched holes 142 and the corresponding channel.

In the in-process of cleaing away impurity or normal use heat exchanger, the medium flows into in the water course, then from the blowout of side blow hole 142 to form the impact to the impurity of piling up in the passageway, impurity receives the impact and the rolling that does not stop, with this make the medium take the cooler core with impurity more easily, and then improved the life and the effect of heat exchanger.

Referring to fig. 4 and 5, the first filter cloth 12 is bonded to the open end of the water channel, the second filter cloth 13 is bonded to the side, opposite to the corresponding fin, of the inner wall of the water channel, and the first filter cloth 12 and the second filter cloth 13 are arranged to reduce the possibility of impurities accumulating in the water channel.

When the heat exchanger is in use, impurities may be attached to the side of the first filter cloth 12 facing away from the corresponding water channel, thereby causing a certain obstruction to the clean water medium passing through the first filter cloth 12.

When impurities are reversely removed, the medium can enter the water channel from the side punching holes 142 and then reversely pass through the first filter cloth 12, so that the impurities attached to the first filter cloth 12 are backflushed, and the filtering effect and the service life of the first filter cloth 12 are improved.

Referring to fig. 4 and 5, the partition plate includes two plate bodies 14 tightly attached and bolted, the water channel includes water channels 141 respectively formed on the side walls of the two plate bodies 14 tightly attached to each other, and the partition plate is separately disposed, so that a worker can more conveniently replace the second filter cloth 13.

The implementation principle of the plate-fin heat exchanger for waste gas heat exchange in the embodiment of the application is as follows: the heat exchanger is detached by cleaning personnel and is communicated to the water system in the forward direction. The clean water enters the outer channel from the water inlet of the outer channel, then sequentially passes through the water through holes 711 on each scraping blade 71 and flows out from the water outlet of the outer channel. The clear water drives the scraping sheet 71 to slide towards the direction close to the water outlet end of the outer channel in the flowing process. In the process of sliding the wiper 71, the corresponding spacer and the foreign matter attached to the outer fin 5 can be scraped off. Clear water flows into the water channel and then is sprayed out from the side punching holes 142, so that impurities accumulated in the outer channel are impacted, the impurities are impacted and continuously rolled, the impurities in the outer channel are taken out of the core body of the cooler by the clear water, and forward cleaning of the impurities is realized. When the clear water stops flowing in the outer channel, the deformation force of the pressure spring 72 drives each scraping blade 71 to automatically reset.

During reverse clearance, only need with the heat exchanger reverse intercommunication in water system for clear water is reverse to flow in the outer passageway, and doctor-bar 71 is reverse to be slided, and doctor-bar 71 can reverse the scraping impurity. The inner channel impurity removal method is the same as the outer channel impurity removal method, and therefore, the description thereof is omitted.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.