WO2021179360A1

WO2021179360A1 - Chip assembly and flue gas heat exchanger

Info

Publication number: WO2021179360A1
Application number: PCT/CN2020/082173
Authority: WO
Inventors: 詹凌云; 张文锋; 王丹娟
Original assignee: 浙江银轮机械股份有限公司
Priority date: 2020-03-12
Filing date: 2020-03-30
Publication date: 2021-09-16
Also published as: CN111238267A

Abstract

The present invention relates to the technical field of heat exchange devices, and in particular, to a chip assembly and a flue gas heat exchanger. The chip assembly comprises first intermediate chips and second intermediate chips which are stacked in a first direction. Flue gas channels are formed between the first intermediate chips and the second intermediate chips. The flue gas channels are of a closed structure, and have air ports configured to be in communication with flue gas pipelines. The purpose of the present invention is to provide a chip assembly and a flue gas heat exchanger in view of the problems of a wide variety and relatively complicated assembly of parts of the current heat exchanger.

Description

Chip assembly and flue gas heat exchanger

Cross-references to related applications

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on March 12, 2020 with the application number 202010170498.1, titled "Chip Assembly and Flue Gas Heat Exchanger", the entire content of which is incorporated into this application by reference .

Technical field

The present disclosure relates to the technical field of heat exchange equipment, and in particular to a chip assembly and a flue gas heat exchanger.

Background technique

With the development of exhaust gas recirculation technology (EGR) and waste heat recovery technology (EHRS), various flue gas heat exchangers have been produced one after another. Among them, the plate-fin flue gas heat exchanger is widely used due to its excellent heat exchange performance.

However, because the existing heat exchanger has many defects, it cannot meet the existing demand.

Public content

In order to at least alleviate one of the many technical problems that the current heat exchanger has a large variety of parts, relatively complicated assembly, and is not suitable for mass production, the present disclosure provides a chip assembly and a flue gas heat exchanger.

In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

The present disclosure provides a chip assembly including a first intermediate chip and a second intermediate chip stacked in a first direction, a flue gas flow channel is formed between the first intermediate chip and the second intermediate chip, The flue gas channel is a closed structure, and the flue gas channel has an air port configured to communicate with the flue gas pipe.

Optionally, the edge of the first intermediate chip forms a first flanging, the edge of the second intermediate chip forms a second flanging, and the first flanging overlaps the second flanging to form an airtight The flue gas flow channel.

The beneficial effects of the technical solutions provided by the embodiments of the present disclosure include at least: during the assembly process, the first intermediate chip and the second intermediate chip in the chip assembly can be positioned and overlapped by the first flange and the second flange The use of the above structure can not only improve the assembly efficiency, but also improve the accuracy of assembly, thereby making the flue gas heat exchanger more suitable for mass production.

Optionally, the first intermediate chip further includes a first body and a first bending portion, and the first bending portion is located between the first body and the first flange to connect the first The main body and the first flange, the first bending part protrudes toward the direction of the flue gas flow channel; and/or,

The second intermediate chip further includes a second body and a second bending portion, and the second bending portion is located between the second body and the second flange to connect the second body and the second flange. The second flanging, the second bending part protrudes in the direction of the flue gas flow channel.

Optionally, both the first intermediate chip and the second intermediate chip are formed by stamping.

The beneficial effects of the technical solutions provided by the embodiments of the present disclosure include at least: by using the above-mentioned first bending portion, and/or, the second bending portion, the intermediate chip has a certain release margin during thermal expansion, and the use of the intermediate chip The flexibility to release the margin can reduce the possibility of damage to the intermediate chip and the product using the intermediate chip during thermal expansion, improve product reliability, and facilitate the discharge of flue gas condensed corrosive liquid to avoid corrosion problems.

Optionally, it includes fins, and there are two air ports, one of the air ports is an air inlet and the other is an air outlet, the fins are installed in the flue gas flow channel, and the fins The blade has a straight tooth portion, and the position of the straight tooth portion corresponds to the position of the air inlet. Optionally, the fin further has a heat exchange part; the heat exchange part includes any one of corrugated, staggered teeth or flat fin structure.

The beneficial effects of the technical solution provided in this embodiment at least include: the use of straight teeth in the fins can weaken the heat exchange capacity at the air inlet, and at the same time can reduce the wall temperature at the air inlet, thereby reducing thermal stress and heat. Fatigue failure risk, and at the same time, it can also enhance the pressure resistance of one side of the coolant flow channel; in addition to the straight tooth part, the fin also includes a heat exchange part, where the heat exchange part and the straight tooth part together form the fin as a whole; The heat exchange part of the fin can choose a structure with stronger heat exchange capacity, such as corrugated, staggered teeth or a straight fin structure with a smaller tooth pitch, which is configured to improve the heat exchange capacity and make the product more compact; among them, the fin It can be in split form, or it can be made as a whole.

The present disclosure also provides a flue gas heat exchanger, including a cover and a chip unit connected to the cover, the chip unit includes at least one of the above-mentioned chip components, and the cover is between the outer wall of the chip unit A first liquid flow path is formed between.

Optionally, a liquid channel penetrating the chip assembly in a first direction is formed on the chip assembly, the liquid channel is in communication with the first liquid flow channel, and the liquid channel is connected to the flue gas The flow channels are sealed and isolated.

The beneficial effects of the technical solution provided by this embodiment at least include: connecting the liquid flow channels in the chip unit and around the chip unit through the liquid channel as a whole, so that the flue gas flow channel is covered by the liquid flow channel, improving heat exchange efficiency and exchange rate. Thermal performance, while reducing the flue gas channel wall temperature, improving product reliability.

Optionally, the liquid channel includes a first cylindrical portion formed on the first intermediate chip and a second cylindrical portion formed on the second intermediate chip, and the first cylindrical portion is inserted into the second cylindrical portion .

The beneficial effects of the technical solution provided by this embodiment at least include: connecting the first cylinder part and the second cylinder part in the form of plug-in connection, and forming a liquid channel, which realizes the technical effects of simple installation, improved production efficiency, and cost reduction, so that The flue gas heat exchanger is more suitable for mass production.

Optionally, the chip unit includes at least two of the chip components stacked in a first direction, a second liquid channel is formed between adjacent chip components, and the first liquid channel is connected to the The second liquid flow channels communicate with each other.

The beneficial effects of the technical solution provided in this embodiment at least include: the heat exchange performance of the flue gas heat exchanger can be improved by using multiple chip assemblies.

Optionally, the first intermediate chip and the second intermediate chip are each formed with the air port; the air port formed on the first intermediate chip is a first air port, and in the first direction, the first air port is The air port forms a protrusion protruding to the outside of the flue gas flow channel; the air port formed on the second intermediate chip is a second air port, and in the first direction, the second air port forms a flow toward the flue gas A protrusion protruding from the inner side of the channel; between two adjacent chip assemblies, the first air port of one of the chip assemblies and the second air port of the other chip are inserted and sealed.

The beneficial effects of the technical solution provided by this embodiment include: during the assembly process, the communication between the flue gas flow channels of each chip assembly can be realized through the mating of the first air port and the second air port between the chip assemblies. , Improve the assembly efficiency, and the mating of the first air port and the second air port between the chip components can also play a role in positioning the assembly between the chip units, improve the assembly accuracy, and make the flue gas heat exchanger more Suitable for mass production. The first air port and the second air port may both be air inlets or both air outlets.

Optionally, the covering member includes a first cover plate configured to cooperate with a first intermediate chip located at the outermost side of the chip unit in the first direction, on the first cover plate A third air port is formed, and the first air port of the first intermediate chip located at the outermost side of the chip unit is inserted and sealed with the third air port.

Optionally, a plurality of third air ports are provided along the extending direction of the first cover plate in the second direction.

Optionally, the number of the first air ports of the first intermediate chip corresponds to the number of the third air ports one-to-one, and each of the third air ports corresponds to the first air port of the first intermediate chip. And it is sealed and configured to form the second liquid flow channel between any two adjacent third gas ports.

The beneficial effects of the technical solution provided in this embodiment at least include: the connection between the flue gas flow channel in each chip assembly and the flue gas pipe is realized through the connection between the third gas port and the first gas port, and at the same time, the first gas port and the third gas port are connected to each other. The plug-in connection is simple and convenient, which improves the production efficiency, reduces the production cost, and makes the flue gas heat exchanger more suitable for mass production. When the first air port is the air inlet, the third air port is corresponding to the air inlet, and when the first air port is the air outlet, the third air port is corresponding to the air outlet; at the same time, multiple first air ports and multiple third air ports are used Multiple second liquid flow channels are formed between them, which can better realize the connection between the flue gas flow channels in each chip assembly and the flue gas pipes. The multiple second liquid flow channels and liquid channels are used to make the chip unit and surrounding The liquid flow channel is connected as a whole, so that the flue gas flow channel is covered by the second liquid flow channel, and the heat exchange efficiency and heat exchange performance are improved.

Optionally, the first middle chip has a crescent flanging formed at the edge of the first air port, and the crescent flanging extends obliquely in a direction away from the first cover plate.

Optionally, the crescent flanging of the bottom matching chip is a first crescent flanging, the crescent flanging of the first intermediate chip other than the bottom matching chip is a second crescent flanging, and the first crescent flanging The area of the side is smaller than the area of the second crescent flanging, and the angle between the first crescent flanging and the bottom matching chip is greater than the angle between the second crescent flanging and the first intermediate chip.

The beneficial effects of the technical solution provided by this embodiment at least include: guiding the flue gas flow through the crescent flanges, so that the flue gas flow is evenly distributed, and avoiding large thermal stresses when the temperature field difference is large.

Optionally, it also includes a fluid inlet flange and a fluid outlet flange;

The fluid inlet flange is installed at the air inlet and the liquid inlet of the first cover plate, and the fluid outlet flange is installed at the air outlet and the liquid outlet of the first cover plate.

Optionally, the cover includes a second cover plate configured to cooperate with a second intermediate chip located at the outermost side of the chip unit in the first direction, on the second cover plate A port blocking portion is formed, and in the first direction, the port blocking portion is a protrusion extending toward the chip unit. The second port of the second intermediate chip located at the outermost side of the chip unit is connected to the The air port blocking part is plugged and sealed.

Optionally, a plurality of the air port blocking portions are provided along the extension direction of the second cover plate in the second direction.

Optionally, the number of the second air ports of the second intermediate chip corresponds to the number of the air port blocking portions one-to-one, and each of the air port blocking portions corresponds to the second air port of the second intermediate chip It is plugged and sealed, and is configured such that the first liquid flow channel is formed between any two adjacent air port blocking parts.

The beneficial effects of the technical solution provided by this embodiment at least include: at the second cover plate, the air port blocking part is matched with the second air port, and the air port blocking part and the second air port can be easily and conveniently matched through plugging, and the production is improved. Efficiency, reducing production costs, making the flue gas heat exchanger more suitable for mass production; at the same time, using multiple air port blocking parts and the second air port to form multiple first liquid flow channels, which can better realize each The flue gas flow channel in the chip assembly is connected with the flue gas pipe, and a plurality of first liquid flow channels and liquid channels are used to connect the liquid flow channels in the chip unit and around the chip unit as a whole, so that the flue gas flow channel is covered by the first liquid flow. Road coating improves heat exchange efficiency and heat exchange performance.

The technical solution provided by the present disclosure can at least achieve the following beneficial effects:

In the chip assembly and flue gas heat exchanger provided by the present disclosure, a closed flue gas flow channel is formed inside the chip assembly itself, instead of using a gas chamber and a main board to connect the core to form a closed flue gas heat exchanger as in the traditional flue gas heat exchanger. The flue gas flow channel, therefore, reduces the types of parts required for manufacturing the flue gas heat exchanger, reduces the assembly difficulty, and makes the flue gas heat exchanger more suitable for mass production.

The additional technical features and advantages of the present disclosure will be more apparent in the following description, or can be understood through specific practices of the present disclosure.

Description of the drawings

In order to more clearly illustrate the technical solutions of the specific embodiments of the present disclosure, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of an embodiment of a flue gas heat exchanger provided by an embodiment of the disclosure;

Figure 2 is a cross-sectional view at A-A in Figure 1;

Figure 3 is a partial cross-sectional view at B-B in Figure 1;

4 is a schematic diagram of an explosive structure of an implementation of a flue gas heat exchanger provided by an embodiment of the disclosure;

FIG. 5 is a schematic structural diagram of an implementation manner of a bottom matching chip provided by an embodiment of the disclosure; FIG.

6 is a schematic structural diagram of an implementation manner of a first intermediate chip provided by an embodiment of the disclosure;

FIG. 7 is a schematic structural diagram of an embodiment of a fin provided by an embodiment of the disclosure.

Reference signs: 100-second cover plate; 110-port blocking part; 200-fluid inlet flange; 300-first cover plate; 400-fluid outlet flange; 500-chip assembly; 510-second intermediate chip 511-second barrel part; 512-first bending part; 520-fin; 521-straight tooth part; 530-first intermediate chip; 531-second crescent flanging; 532-first crescent flanging; 533-first cylinder part; 534-second bending part; 600-first liquid flow channel; 700-flue gas flow channel; 800-liquid channel; 900-second liquid flow channel.

Detailed ways

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

It should be noted that the plate-fin flue gas heat exchanger in the prior art generally consists of a number of chip components with built-in fins and corresponding holes on the tube plates at both ends to form a core assembly. It is assembled with shell, air chamber and water inlet and outlet to form a heat exchanger. However, such existing heat exchanger parts have many types and relatively complicated assembly, which is not suitable for mass production.

In view of the problems of the existing heat exchangers, the chip assembly provided by this embodiment can at least alleviate the problems that the existing heat exchangers have a large variety of parts, relatively complicated assembly, and are not suitable for mass production. At least one of them.

As shown in FIGS. 1 to 7, an embodiment of the present disclosure provides a chip assembly 500, which includes a first intermediate chip 530 and a second intermediate chip 510 that are stacked in a first direction. A flue gas channel 700 is formed between the middle chips 510, the flue gas channel 700 is a closed structure, and the flue gas channel 700 has an air port configured to communicate with the flue gas pipe.

It should be noted that the chip assembly 500 provided by the embodiment of the present disclosure forms a closed flue gas flow channel 700 inside itself, instead of using a gas chamber and a main board to connect the core as in the traditional flue gas heat exchanger. The airtight flue gas flow channel 700, therefore, reduces the types of parts required to manufacture the flue gas heat exchanger, reduces the assembly difficulty, and makes the flue gas heat exchanger more suitable for mass production; and, because the embodiments of the present disclosure provide The chip assembly 500 removes the structure such as the chamber body and the main board, further reducing the production cost of the flue gas heat exchanger; the first intermediate chip 530 and the second intermediate chip 510 can be formed by stamping, which has higher production efficiency and lower cost.

Optionally, the edge of the first middle chip 530 forms a first flanging, the edge of the second middle chip 510 forms a second flanging, and the first flanging and the second flanging overlap to form a closed flue gas flow channel 700 . During the assembly process, the first intermediate chip 530 and the second intermediate chip 510 in the chip assembly 500 can be positioned and overlapped by the first flange and the second flange. The use of the above structure can not only improve the assembly efficiency, but also The accuracy of assembly can be improved, and the flue gas heat exchanger is more suitable for mass production.

Optionally, the first intermediate chip 530 further includes a first body and a first bending portion 512, the first bending portion 512 is located between the first body and the first flange to connect the first body and the first flange, The first bending portion 512 protrudes toward the direction of the flue gas flow channel 700; and/or,

The second intermediate chip 510 further includes a second body and a second bending portion 534. The second bending portion 534 is located between the second body and the second flange to connect the second body and the second flange. The portion 534 protrudes toward the direction of the flue gas flow channel 700.

Optionally, both the first intermediate chip 530 and the second intermediate chip 510 are formed by stamping.

The beneficial effects of the technical solution provided by the embodiments of the present disclosure include at least: by using the above-mentioned first bending portion 512 and/or the second bending portion 534, the intermediate chip has a certain release margin during thermal expansion, and the use of The flexibility of the release margin of the intermediate chip can reduce the possibility of damage to the intermediate chip and products using the intermediate chip during thermal expansion, improve product reliability, and facilitate the discharge of flue gas condensed corrosive liquid to avoid corrosion problems.

Optionally, the chip assembly 500 provided by the embodiment of the present disclosure includes a fin 520, and there are two air ports, one of which is an air inlet and the other is an air outlet, and the fin 520 is installed in the flue gas flow channel 700 Inside, the fin 520 has a straight tooth portion 521, and the position of the straight tooth portion 521 corresponds to the position of the air inlet. Optionally, the fin 520 further has a heat exchange part; the heat exchange part includes any one of corrugated, staggered teeth or flat fin structures. The fin 520 adopts a straight tooth part 521 to weaken the heat exchange capacity at the air inlet, and reduce the wall temperature at the air inlet to reduce thermal stress, reduce the risk of thermal fatigue failure, and strengthen the coolant flow path. The pressure resistance capacity of one side; the fin 520 includes a heat exchange part in addition to the straight tooth part 521, wherein the heat exchange part and the straight tooth part 521 together form the fin 520 as a whole; the rest of the fin 520 uses a heat exchange part , The heat exchange part can adopt a structure with stronger heat exchange capacity, such as corrugated, staggered teeth or a flat fin structure with a smaller tooth pitch, which is configured to improve the heat exchange capacity and make the product more compact; among them, the fin 520 can It can be split, or it can be made as a whole.

The embodiment of the present disclosure further provides a flue gas heat exchanger, which includes a cover and a chip unit connected to the cover. The chip unit includes at least one chip assembly 500 provided in the above embodiment of the present disclosure, the cover and the outer wall of the chip unit A first liquid flow channel 600 is formed therebetween.

It should be noted that the flue gas heat exchanger provided by the present disclosure adopts the chip assembly 500 provided by the present disclosure, and a closed flue gas flow channel 700 is formed inside itself, instead of a traditional flue gas heat exchanger. The air chamber and the main board are needed to connect the core to form a closed flue gas flow channel 700. Therefore, the types of parts required for manufacturing the flue gas heat exchanger are reduced, the assembly difficulty is reduced, and the flue gas heat exchanger is more suitable for batches. Production; And, because the flue gas heat exchanger provided by the embodiments of the present disclosure removes the structure such as the chamber body and the main board, the production cost of the flue gas heat exchanger is further reduced. A liquid inlet and a liquid outlet communicating with the first liquid flow channel 600 are formed on the cover.

Optionally, a liquid channel 800 penetrating the chip assembly 500 in the first direction is formed on the chip assembly 500, the liquid channel 800 is in communication with the first liquid flow channel 600, and the liquid channel 800 and the flue gas flow channel 700 are sealed isolation. The liquid channel in the chip unit and the liquid channel around the chip unit are connected as a whole through the liquid channel 800, so that the flue gas channel 700 is covered by the liquid channel, which improves the heat exchange efficiency and heat exchange performance, and reduces the wall temperature of the flue gas channel. Improve product reliability.

Optionally, the liquid channel 800 includes a first cylindrical portion 533 formed on the first intermediate chip 530 and a second cylindrical portion 511 formed on the second intermediate chip 510, and the first cylindrical portion 533 is inserted into the second cylindrical portion 511. The first cylindrical part 533 and the second cylindrical part 511 are connected by plug-in form, and the liquid channel 800 is formed, which realizes the technical effects of simple installation, improved production efficiency, and reduced cost, making the flue gas heat exchanger more suitable for mass production .

Optionally, the chip unit includes at least two chip assemblies 500 stacked in a first direction, a second liquid flow channel 900 is formed between adjacent chip assemblies 500, the first liquid flow channel 600 and the second liquid flow channel 900 Connected between. The use of multiple chip assemblies 500 can improve the heat exchange performance of the flue gas heat exchanger.

Optionally, both the first intermediate chip 530 and the second intermediate chip 510 are formed with air ports; the air port formed on the first intermediate chip 530 is a first air port, and the first air port forms a flue gas flow path in the first direction A protruding protrusion on the outside of 700; the air port formed on the second intermediate chip 510 is a second air port, and in the first direction, the second air port forms a protrusion protruding to the inner side of the flue gas flow channel 700; adjacent Between the two chip assemblies 500, the first air port of one chip assembly 500 and the second air port of the other chip are inserted and sealed. During the assembly process, through the mating of the first air port and the second air port between the chip assemblies 500, the communication between the flue gas channels 700 of each chip assembly 500 can be realized, and the assembly efficiency is improved. The plug-in cooperation of the first air port and the second air port between the components can also play a role in positioning the assembly between the chip units, improve the assembly accuracy, and make the flue gas heat exchanger more suitable for mass production. The first air port and the second air port may both be air inlets or both air outlets.

Optionally, the cover includes a first cover 300, the first cover 300 is configured to cooperate with the first intermediate chip 530 located at the outermost side of the chip unit in the first direction, and a third cover 300 is formed on the first cover 300. The air port, the first air port of the first intermediate chip 530 located at the outermost side of the chip unit and the third air port are inserted and sealed. Through the connection between the third air port and the first air port, the flue gas flow channel 700 in each chip assembly 500 is connected with the flue gas pipe. At the same time, the insertion between the first air port and the third air port is simple and convenient, which improves the production efficiency , Which reduces the production cost and makes the flue gas heat exchanger more suitable for mass production. When the first air port is an air inlet, the third air port is correspondingly an air inlet, and when the first air port is an air outlet, the third air port is correspondingly an air outlet.

Optionally, a plurality of third air ports are provided along the extending direction of the first cover plate 300 in the second direction. Optionally, the number of the first air ports of the first intermediate chip 530 corresponds to the number of the third air ports one-to-one, and each third air port is correspondingly plugged and sealed with the first air port of the first intermediate chip 530, and the configuration is arbitrary A second liquid flow channel 900 is formed between two adjacent third gas ports. Using multiple first gas ports and multiple third gas ports to form multiple second liquid flow passages 900 can better realize the connection between the flue gas flow channels 700 in each chip assembly and the flue gas pipes, and use multiple second liquid flow channels. The flow channel 900 and the liquid channel 800 connect the liquid flow channels in the chip unit and around the chip unit as a whole, so that the flue gas flow channel 700 is covered by the second liquid flow channel 900, which improves heat exchange efficiency and heat exchange performance.

It should be noted that, as shown in Figure 2, the first direction is along the vertical arrangement direction of the flue gas heat exchanger, and the second direction is along the horizontal arrangement direction of the flue gas heat exchanger; in other words, the first direction is the vertical arrangement direction of the flue gas heat exchanger. The direction is the stacking method of the flue gas heat exchanger, and the second direction is the horizontal extension direction of the first cover plate 300.

Optionally, the first middle chip 530 has a crescent flanging formed at the edge of the first air port, and the crescent flanging extends obliquely in a direction away from the first cover plate 300.

Optionally, the crescent flanging of the bottom matching chip is the first crescent flanging 532, the crescent flanging of the first intermediate chip 530 except the bottom matching chip is the second crescent flanging 531, and the crescent flanging of the first crescent flanging 532 The area is smaller than the area of the second crescent flange 531, and the angle between the first crescent flange 532 and the bottom chip is greater than the angle between the second crescent flange 531 and the first middle chip 530.

The beneficial effects of the technical solution provided in this embodiment at least include: guiding the flue gas flow through the crescent flanges, so that the flue gas flow is evenly distributed, and avoiding large thermal stresses when the temperature field difference is large.

Optionally, the cover includes a second cover plate 100 configured to cooperate with the second intermediate chip 510 located at the outermost side of the chip unit in the first direction, and an air port seal is formed on the second cover plate 100 The plugging portion 110, in the first direction, the port plugging portion 110 is a protrusion extending toward the chip unit, and the second port of the second intermediate chip 510 located at the outermost side of the chip unit is inserted and sealed with the port plugging portion 110 . At the second cover plate 100, the air port blocking part 110 cooperates with the second air port through plug-in connection to realize the simple and convenient cooperation between the air port blocking part 110 and the second air port, which improves the production efficiency, reduces the production cost, and makes the flue gas hot. The switch is more suitable for mass production. A fluid inlet flange 200 is installed at the air inlet and liquid inlet of the first cover plate 300, and a fluid outlet flange 400 is installed at the air outlet and liquid outlet of the first cover plate 300.

Optionally, a plurality of air port blocking parts 110 are provided along the extending direction of the second cover plate 100 in the second direction. Optionally, the number of the second air ports of the second intermediate chip 510 corresponds to the number of the air port blocking parts 110 one-to-one, and each of the air port blocking parts 110 corresponds to the second air port of the second intermediate chip 510 and is plugged and sealed. , The first liquid flow channel 600 is formed between any two adjacent air port blocking parts 110. The multiple first liquid flow channels 600 are formed between the multiple air port blocking parts 110 and the second air ports, which can better realize the connection of the flue gas flow channels 700 and the flue gas pipes in each chip assembly, and use multiple first liquid The flow channel 600 and the liquid channel 800 connect the liquid flow channels in the chip unit and around the chip unit as a whole, so that the flue gas flow channel 700 is covered by the first liquid flow channel 600 to improve heat exchange efficiency and heat exchange performance.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit it; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present disclosure. Scope.

Industrial applicability

The chip assembly and the flue gas heat exchanger provided by the embodiments of the present disclosure utilize the inside of the chip assembly itself to form a closed flue gas flow channel, which reduces the heat exchange of the manufacturing flue gas, reduces the assembly difficulty, and makes the flue gas heat exchanger More suitable for mass production.

Claims

A chip assembly, characterized by comprising a first intermediate chip and a second intermediate chip stacked in a first direction, and a flue gas flow channel is formed between the first intermediate chip and the second intermediate chip The flue gas channel is a closed structure, and the flue gas channel has an air port configured to communicate with the flue gas pipe.
The chip assembly according to claim 1, wherein the edge of the first intermediate chip forms a first flanging, the edge of the second intermediate chip forms a second flanging, and the first flanging is connected to the second flanging. The second flange is overlapped to form the airtight flue gas flow channel.
The chip assembly according to claim 2, wherein the first intermediate chip further comprises a first body and a first bending portion, and the first bending portion is located between the first body and the first bending portion. Between the flanges to connect the first body and the first flange, the first bending portion protrudes toward the flue gas flow channel; and/or,

The second intermediate chip further includes a second body and a second bending portion, and the second bending portion is located between the second body and the second flange to connect the second body and the second flange. The second flanging, the second bending part protrudes in the direction of the flue gas flow channel.
The chip assembly according to any one of claims 1 to 3, wherein the first intermediate chip and the second intermediate chip are both stamped and formed.
The chip assembly according to any one of claims 1 to 4, which comprises a fin, and there are two air ports, one of the air ports is an air inlet, and the other is an air outlet, The fin is installed in the flue gas flow channel, and the fin has a straight tooth part, and the position of the straight tooth part corresponds to the position of the air inlet.
A flue gas heat exchanger, characterized by comprising a cover and a chip unit connected to the cover, the chip unit comprising at least one chip assembly according to any one of claims 1-5, and A first liquid flow channel is formed between the cover and the outer wall of the chip unit.
The flue gas heat exchanger according to claim 6, wherein a liquid channel penetrating the chip assembly in a first direction is formed on the chip assembly, and the liquid channel and the first liquid flow The channels are connected, and the liquid channel and the flue gas flow channel are sealed and isolated.
The flue gas heat exchanger according to claim 7, wherein the liquid channel includes a first cylindrical portion formed on the first intermediate chip and a second cylindrical portion formed on the second intermediate chip, the The first cylinder part is plugged into the second cylinder part.
The flue gas heat exchanger according to any one of claims 6-8, wherein the chip unit includes at least two of the chip components stacked in a first direction, and the chip components are adjacent to each other. A second liquid flow path is formed therebetween, and the first liquid flow path is communicated with the second liquid flow path.
The flue gas heat exchanger according to claim 9, wherein the air ports are formed on both the first intermediate chip and the second intermediate chip; the air ports formed on the first intermediate chip are The first air port, in the first direction, the first air port forms a protrusion protruding to the outside of the flue gas flow channel; the air port formed on the second intermediate chip is the second air port, The upward second air port forms a protrusion protruding to the inside of the flue gas flow channel; between two adjacent chip assemblies, the first air port of one of the chip assemblies is connected to the other chip assembly. The second air ports are inserted and sealed.
The flue gas heat exchanger according to claim 10, wherein the first air port and the second air port are both air inlets or both air outlets.
The flue gas heat exchanger according to claim 10 or 11, wherein the cover includes a first cover plate, and the first intermediate chip located at the outermost side of the chip unit in the first direction is a bottom chip The first cover plate is matched with the bottom matching chip, a third air port is formed on the first cover plate, and the first air port of the bottom matching chip is plugged and sealed with the third air port.
The flue gas heat exchanger according to claim 12, wherein the first middle chip has a crescent flanging formed at the edge of the first air port, and the crescent flanging is directed away from the first air port. The direction of the first cover plate extends obliquely.
The flue gas heat exchanger according to claim 13, wherein the crescent flanging of the bottom matching chip is a first crescent flanging, and the crescent flanging of the first intermediate chip except the bottom matching chip Is a second crescent flanging, the area of the first crescent flanging is smaller than the area of the second crescent flanging, and the angle between the first crescent flanging and the bottoming chip is greater than that of the second crescent flanging The angle between the edge and the first middle chip.
The flue gas heat exchanger according to any one of claims 12-14, wherein a plurality of the third air ports are provided along the extending direction of the first cover plate in the second direction.
The flue gas heat exchanger according to claim 15, wherein the number of the first air ports of the first intermediate chip corresponds to the number of the third air ports one-to-one, and each of the third air ports corresponds to It is plugged and sealed with the first gas port of the first intermediate chip, and is configured such that the second liquid flow channel is formed between any two adjacent third gas ports.
The flue gas heat exchanger according to any one of claims 12-16, further comprising a fluid inlet flange and a fluid outlet flange;

The fluid inlet flange is installed at the air inlet and the liquid inlet of the first cover plate, and the fluid outlet flange is installed at the air outlet and the liquid outlet of the first cover plate.
The flue gas heat exchanger according to any one of claims 10-17, wherein the cover comprises a second cover plate, and the second cover plate is configured to be located in the first direction from the The outermost second middle chip of the chip unit is matched, and an air port blocking portion is formed on the second cover plate. In the first direction, the air port blocking portion is a protrusion extending toward the chip unit. The second air port of the second intermediate chip located at the outermost side of the chip unit is inserted and sealed with the air port blocking part.
The flue gas heat exchanger according to claim 18, wherein the air port blocking portion is provided in plurality along the extending direction of the second cover plate in the second direction.
The flue gas heat exchanger according to claim 19, wherein the number of the second air ports of the second intermediate chip corresponds to the number of the air port blocking parts one-to-one, and each of the air port blocking parts They are all correspondingly inserted and sealed with the second air port of the second intermediate chip, and are arranged such that the first liquid flow channel is formed between any two adjacent air port blocking parts.