CN221036202U - Novel condensing wall-mounted boiler heat exchanger - Google Patents

Abstract

The utility model provides a novel condensing type wall-mounted boiler heat exchanger, which comprises a shell-tube mechanism and a heat exchange mechanism, wherein the heat exchange mechanism is positioned in the shell-tube mechanism, a transition smoke cavity communicated with the heat exchange mechanism is arranged in the shell-tube mechanism, the heat exchange mechanism comprises a plurality of flat tubes and water inlet and outlet switching joints, wherein each flat tube is sequentially arranged in a lamination manner from top to bottom to form a flat tube, two ports of each flat tube are flush with and correspond to two ports of adjacent flat tubes to form two ports of the flat tube, the two ports of the flat tube penetrate through the shell-tube mechanism from inside to outside and extend to the outside, the lower end of one side of the inside of the water inlet and outlet switching joint is provided with a water inlet cavity, the upper end of the inside of the flat tube is provided with a mixing cavity, the water inlet and outlet cavity is respectively communicated with the upper part and the lower part of one port of the flat tube in a sealing manner, and the mixing cavity is communicated with the other port of the flat tube in a sealing manner. The device has simple structure, can better improve heat exchange efficiency, reduce water resistance and effectively avoid forming condensed water in the equipment.

Description

Novel condensing wall-mounted boiler heat exchanger

Technical Field

The utility model relates to the technical field of heat exchange equipment, in particular to a novel condensing wall-mounted boiler heat exchanger.

Background

The main stream of wall-hanging stove heat exchangers in the market basically takes a spiral coil pipe as a heat exchange main body, for example, in the prior art CN108917181A, in the technology, the spiral coil pipe is arranged in the heat exchanger, one end of the spiral coil pipe is a water inlet end, and the other end of the spiral coil pipe is a water outlet end, so that heat exchange with a burner in the heat exchanger is completed, and the purpose of heat transfer is achieved.

Meanwhile, in order to improve the heat exchange efficiency of the spiral coil, a person skilled in the art designs the spiral coil with a circular section into a flat elliptic tube type, while the flat elliptic tube type spiral coil has a larger heat exchange area under the same cross section area, the corresponding heating water has larger on-way resistance in the tube, so that the cross section width of the conventional spiral coil is usually designed to be larger in order to balance the water resistance and the heat exchange performance, but the whole volume of the heat exchanger is larger; in addition, the water temperature in the conventional spiral coil is linearly distributed, the temperature of a water outlet is generally highest, the temperature of the water outlet is lower when the water outlet is closer to the water inlet, the temperature difference of different ports of the spiral coil is overlarge, heat exchange is further caused to be uneven, when the heat exchange is uneven to a certain extent, the generation area of condensed water is enlarged, and the condensed water extends from a condensation area to a non-condensation area, so that the damage and the corrosion of the coil to a combustor in a cavity are caused, and the heat exchange amount is reduced.

Manufacturers at home and abroad usually adopt a plurality of coils to increase the heat exchange area, for example, patent CN111207608A of Guangdong and heat energy science and technology limited company discloses a full-premixing efficient condensing heat exchanger, a heat exchange main body of the full-premixing efficient condensing heat exchanger comprises a double-spiral coil, wherein a water inlet interface is arranged on a second spiral heat exchange tube, and a second transfer interface is arranged on the other end of the second spiral heat exchange tube; the first spiral heat exchange tube is internally provided with a spiral heat exchange tube, fins are arranged outside the tube, one end of the first spiral heat exchange tube is provided with a first transfer interface, the other end of the first spiral heat exchange tube is provided with a water outlet interface, and a water communicating box is connected between the first transfer interface and the second transfer interface; the scheme adopts two spiral coils connected in series, and the edge Cheng Shuizu is large.

For another example, patent US20210333013A1 to AO Smith discloses a heat exchanger having inner and outer spiral heat exchange coils and a plurality of fins fixedly disposed around a tube body, a flow guiding structure being provided at a part of the outer periphery of the fins, and a flow guiding flue being located between the flow guiding structure and the outer wall of the tube body. The heat exchange tube forms a flow guide flue through the flow guide structure on the fins, and the flow guide flue can guide the flue gas to the surface of the tube body of the heat exchange tube, so that the outward diffusion of the flue gas between the fins is avoided, and the heat exchange efficiency of the heat exchange tube is improved. However, the structure adopts two layers of coils to exchange heat twice successively, so that the edge Cheng Shuizu is large, fins are added to increase the heat exchange area, and the cost is high.

Therefore, the novel condensing wall-mounted boiler heat exchanger is designed, so that the high-low temperature area in the heat exchange cavity is separated, the influence of condensed water is avoided, the heat efficiency of the tube is improved by changing the heat tube, and the water resistance is reduced.

Disclosure of utility model

In view of the above, in order to solve the above-mentioned influence of condensed water and the problem of low heat exchange efficiency, the embodiment of the utility model provides a novel condensing wall-mounted boiler heat exchanger.

The embodiment of the utility model provides a novel condensing wall-mounted boiler heat exchanger, which comprises a shell and barrel mechanism, wherein the shell and barrel mechanism comprises an outer shell and an inner shell, the inner shell is accommodated in the outer shell, a transition smoke cavity is formed between the outer shell and the inner shell, a smoke outlet communicated with the transition smoke cavity is formed in the wall surface of the outer shell, the transition smoke cavity is communicated with the inside of the inner shell, the upper end of the outer shell is connected with an end cover in a sealing way, a sealing cavity is formed between the outer shell and the end cover, and a combustor extending to the center of the inside of the inner shell is arranged on the end cover;

And the heat exchange mechanism is positioned in the inner cylinder shell and comprises a plurality of flat pipes and water inlet and outlet adapters, wherein each flat pipe is sequentially overlapped from top to bottom to form a flat pipe barrel, two ports of each flat pipe are flush with and correspond to two ports of each adjacent flat pipe barrel to form two ports of the flat pipe barrel, two ports of each flat pipe barrel sequentially penetrate through the inner cylinder shell and the outer cylinder shell from inside to outside and extend to the outside, a water inlet cavity is formed in the lower end of one side of the inner side of the water inlet and outlet adapter, a water outlet cavity is formed in the upper end of the inner side of the water inlet and outlet adapter, the other side of the inner side of the outer side of the inner side adapter is provided with a mixing cavity, the water inlet cavity and the water outlet cavity are respectively communicated with the upper part and the lower part of one port of the flat pipe barrel in a sealing manner, and the other port of the flat pipe barrel in a sealing manner.

Further, an adapter plate is arranged between the water inlet and outlet adapter and the two ports of the flat pipe barrel, the appearance of the adapter plate is matched with the appearance of the two ports of the flat pipe barrel, the water inlet and outlet adapter is fixedly connected with the two ports of the flat pipe barrel in a sealing way through the adapter plate, a first hole is arranged at the lower end of one side of the adapter plate, a second hole is arranged at the upper end of the adapter plate, a third hole is arranged at the other side of the adapter plate, the water inlet cavity and the water outlet cavity are respectively communicated with the corresponding ends of the flat pipe barrel through the first hole and the second hole, and the mixing cavity is communicated with the corresponding ends of the flat pipe barrel through the third hole.

Further, the water inlet and outlet adapter is provided with a water inlet interface and a water outlet interface, the water inlet interface is communicated with the water inlet cavity, and the water outlet interface is communicated with the water outlet cavity.

Further, the axis of the flat tube is coincident with the axis of the inner tube shell, the burner is positioned at the center of the interior of the flat tube, and a premixing cavity is arranged at the upper end of the burner in a communicating manner.

Further, the inner cylinder shell comprises a cylinder body and a supporting plate, the upper end and the lower end of the cylinder body are both open, the flat cylinder body is located in the cylinder body, the supporting plate is located below the cylinder body, the lower end of the cylinder body is fixedly connected with the inner wall of the supporting plate, the outer wall of the supporting plate is fixedly connected with the side inner wall of the outer cylinder shell, a transition smoke cavity is formed between the outer wall of the supporting plate and the side inner wall of the outer cylinder shell, and the transition smoke cavity is communicated with the inside of the cylinder body.

Further, the layer board appearance is class L form, and it includes integrated into one piece's bottom plate and curb plate, wherein the lower terminal surface of bottom plate with the up end fixed connection of urceolus shell bottom surface, up end with barrel lower extreme fixed connection, the curb plate outer wall with urceolus shell side inner wall fixed connection, the up end of urceolus shell bottom surface is equipped with first recess, is equipped with the second recess on the side inner wall, first recess with second recess intercommunication, just the second recess with the exhaust port communicates, the bottom plate with the curb plate shelters from respectively first recess with the second recess is in order to form transition smoke chamber, be equipped with first communication port on the bottom plate, first recess is through first communication port with the inside intercommunication of barrel.

Further, a partition plate is arranged in the flat tube barrel, the partition plate is fixedly connected with the inner wall of the flat tube barrel, and the burner is located above the partition plate.

Further, a gap is reserved between any two adjacent flat pipes.

Further, a second communication port is formed in the cylinder body, a condensate water outlet is formed in the outer wall of the outer cylinder shell, and the condensate water outlet corresponds to the second communication port.

Further, at least one clamping frame is arranged in the cylinder body, the flat pipe barrel is fixedly clamped on the clamping frame, the upper end of the clamping frame is fixedly connected with the end cover, and the lower end of the clamping frame is fixedly connected with the bottom plate.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that: according to the novel condensing type wall-mounted boiler heat exchanger, the traditional spiral coil is replaced by the flat tube formed by laminating the plurality of annular flat tubes, so that the flow area is increased, the flow speed is reduced, the on-way resistance is reduced, the heat exchange efficiency is improved, the fluid in the parallel tubes is mixed and redistributed at the water inlet end of the flat tube, the heat exchange uniformity is improved, the heat exchange efficiency is improved, the partition plate is arranged in the flat tube, two parts with larger temperature difference of the flat tube are separated, condensed water is avoided to the greatest extent, and the possible damage of the condensed water is reduced; meanwhile, the flat tube barrel is formed by laminating a plurality of flat tubes in parallel, so that the heat exchange area can be increased to the greatest extent under the same volume, and the heat exchange performance is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a novel condensing wall-mounted boiler heat exchanger of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of FIG. 1;

FIG. 3 is a schematic view of the outer cartridge housing of FIG. 1;

FIG. 4 is a schematic view of the inner cartridge shell structure of FIG. 2;

FIG. 5 is a schematic view of the pallet structure of FIG. 4;

FIG. 6 is a schematic illustration of the heat exchange mechanism of FIG. 2 in a position within the inner cartridge shell;

FIG. 7 is a schematic view of the heat exchange mechanism of FIG. 6;

FIG. 8 is a schematic view of the water inlet/outlet adapter of FIG. 1;

FIG. 9 is a schematic view of another view of the water inlet/outlet adapter of FIG. 8.

In the figure: 1-shell cylinder mechanism, 2-heat exchange mechanism, 3-outer shell, 4-exhaust port, 5-condensate outlet, 6-end cover, 7-combustor, 8-premix cavity, 9-first recess, 10-second recess, 11-inner shell, 12-barrel, 13-layer board, 14-second communication port, 15-bottom plate, 16-side plate, 17-transition smoke chamber, 18-flat tube, 19-flat tube, 20-clamping frame, 21-water inlet and outlet adapter, 22-water inlet cavity, 23-water outlet cavity, 24-mixing cavity, 25-water inlet interface, 26-water outlet interface, 27-adapter plate, 28-first hole, 29-second hole, 30-third hole, 31-first communication port, 32-partition plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a novel condensing wall-mounted boiler heat exchanger, which includes a shell-and-tube mechanism 1 and a heat exchange mechanism 2 disposed inside the shell structure 1.

The shell and tube mechanism 1 comprises an outer shell and an inner shell, 3, and an inner shell, 11, which are accommodated in the outer shell and 3, and the central lines of the two are mutually overlapped, and the heat exchange mechanism 2 is accommodated in the inner shell and 11 so as to perform heat exchange.

Referring to fig. 3, the outer casing 3 has a cylindrical structure with an open upper end and a bottom surface at a lower end, a smoke outlet 4 and a condensed water outlet 5 which are communicated with the inside are arranged on the outer wall surface of the outer casing 3, and the smoke outlet 4 and the condensed water outlet 5 are positioned on different sides of the outer wall surface of the outer casing 3; the upper end surface of the bottom surface of the outer cylinder shell 3 is provided with a first groove 9, the side inner wall is provided with a second groove 10, the first groove 9 and the second groove 10 are communicated with each other, an L-shaped groove cavity is formed by the first groove 9 and the second groove 10, and meanwhile, the second groove 10 is communicated with the smoke outlet 4; here, the outer cylinder housing 3 in the present embodiment may be integrally formed, or may be formed by assembling two half-shells.

Referring to fig. 4 and 5, the inner cylinder shell 11 includes a cylinder 12 and a supporting plate 13, wherein two ends of the cylinder 12 are open, the cylinder 12 is located above the supporting plate 13, the lower end of the cylinder 12 is fixedly connected with the supporting plate 13, and the supporting plate 13 is fixedly connected with the inner wall of the outer cylinder shell 3, so that the whole inner cylinder shell 11 is fixedly connected with the outer cylinder shell 3, and the heat exchange structure 2 is accommodated in the cylinder 12; here, the outer wall of the cylinder 12 is not in contact with the side inner wall of the outer cylinder housing 3, and is fixedly connected to the outer cylinder housing 3 only by the support plate 13.

The shape of the supporting plate 13 is L-like and comprises a bottom plate 15 and a side plate 16, wherein the bottom plate 15 is round-like, the side plate 16 is triangular-like, the lower end of the side plate 16 is fixedly connected with the edge of the bottom plate 15 in an integrated manner, and a first communication port 31 is arranged in the center of the bottom plate 15; the lower end face of the bottom plate 15 is fixedly connected with the upper end face of the bottom face of the outer cylinder shell 3, the bottom plate 15 shields the first groove 9, the outer side face of the side plate 16 is fixedly connected with the side inner wall of the outer cylinder shell 3, and the side plate 16 shields the second groove 10, so that the first groove 9 and the second groove 10 can be completely shielded to form a transition smoke cavity 17 with the groove chambers of the first groove 9 and the second groove 10, the transition smoke cavity 17 is communicated with the smoke outlet 4, and the first communication port 31 is arranged on the bottom plate 15, so that the transition smoke cavity 17 can be communicated with the interior of the inner cylinder shell 11, and waste gas possibly generated in the inner cylinder shell 11 can be discharged through the smoke outlet 4.

The wall surface of the cylinder 1 is provided with a second communication port 14, the second communication port 14 corresponds to the condensed water outlet 5, so that water vapor possibly generated inside the inner cylinder shell 11 can be discharged through the condensed water outlet 5, and it should be noted that, here, as the outer wall of the cylinder 12 is not contacted with the side inner wall of the outer cylinder shell 3, gaps are left between the outer wall of the cylinder 12 and the side inner wall of the outer cylinder shell 3, and are not directly communicated with the transition smoke chamber 17, and the condensed water outlet 5 is communicated with the second communication port 14 through the gaps, and is further communicated with the inside of the inner cylinder shell 11.

Referring to fig. 1 to 3, an end cover 6 is provided at the upper end of the outer cylinder housing 3, and the lower end surface of the end cover 6 is fixedly connected with the upper end of the outer cylinder housing 3 in a sealing manner, so that a relatively sealed cavity is formed inside the outer cylinder housing 3; the end cover 6 is provided with a burner 7, the burner 7 penetrates through the end cover 6 to extend to the inner center of the cylinder 12, the burner 7 is used for producing flue gas containing heat, the part of the burner 7 positioned in the cylinder 12 is a flue gas discharge end, so that the flue gas containing heat can be discharged into the cylinder 12, and the flue gas containing heat can exchange energy with the heat exchange structure 2; at the same time, the upper end surface of the end cover 6 is provided with a premixing cavity 8, and the premixing cavity 8 is communicated with the inside of the combustor 7 and is used for guiding substances to be combusted into the premixing cavity 8.

The heat exchange mechanism 2 comprises a flat tube 18, the flat tube 18 is accommodated in the cylinder 12, the lower end of the flat tube 18 is fixedly connected with the upper end face of the bottom plate 15, and the upper end of the flat tube 18 is fixedly connected with the lower end face of the end cover 6; at least one clamping frame 20 is arranged inside the barrel 12, each clamping frame 20 is used for further fixing the flat pipe barrel 18, in the embodiment, the number of the clamping frames 20 is two, the clamping frames 20 are symmetrically arranged inside the barrel 12, the shape of each clamping frame 20 is U-shaped, the flat pipe barrel 18 is abutted inside the two clamping frames 20, the opening end of each clamping frame 20 faces upwards and is fixedly connected with the end cover 6, and the other end of each clamping frame is fixedly connected with the upper end face of the bottom plate 15.

The flat tube 18 is formed by sequentially laminating a plurality of annular flat tubes 19 from top to bottom, each flat tube 19 is provided with two ports and a channel, the two ports of each flat tube 19 forming the flat tube 18 are flush with and correspond to the two ports of the adjacent flat tubes 19 to form the two ports of the flat tube 18, and the fact that a gap is reserved between any two adjacent flat tubes 19 is needed to be described, meanwhile, the heat exchange efficiency of the flat tube 18 is directly influenced by the size of the gap, so that the gap can be controlled through the flat tube teeth comb; since the two ports of the flat tube 18 are assembled by the ports of the flat tubes 19, each port of the flat tube 18 is communicated with the channels of the flat tubes 19.

The two ports of the flat tube 18 sequentially penetrate through the inner tube shell 11 and the outer tube shell 3 from inside to outside and extend to the outside, an adapter plate 27 is arranged at the two ports of the flat tube 18, one surface of the adapter plate 27 is fixedly connected with the two ports of the flat tube 18 in a sealing way, the other surface of the adapter plate 27 is far away from the flat tube 18, a first hole 28 is arranged at the lower end of one side of the surface of the adapter plate 27, a second hole 29 is arranged at the upper end of the surface of the adapter plate, a third hole 30 is arranged at the other side of the surface of the adapter plate, the first hole 28, the second hole 29 and the third hole 30 are not communicated, and the first hole 28 and the second hole 29 are communicated with one port of the flat tube 18 in a sealing way, so that one port in the flat tube 18 can be separated into two parts; the third hole 30 is in sealed communication with the other port of the flat tube 18, thus dividing the two ports of the flat tube 18 in three parts as a whole.

The heat exchange mechanism 2 further comprises a water inlet and outlet adapter 21, the water inlet and outlet adapter 21 is fixedly connected with two ports of the flat tube 18 in a sealing way through an adapter plate 27, a water inlet cavity 22 is arranged at the lower end of one side of the interior of the water inlet and outlet adapter 21, a water outlet cavity 23 is arranged at the upper end of the interior of the water inlet and outlet adapter 21, a mixing cavity 24 is arranged at the other side of the interior of the water inlet and outlet adapter 21, the water inlet cavity 22, the water outlet cavity 23 and the mixing cavity 24 are not communicated with each other, and when the heat exchange mechanism 2 is in sealing connection with the adapter plate 27, the water inlet cavity 22 is communicated with a first hole 28 and then communicated with the lower part of a corresponding port of the flat tube 18, the water outlet cavity 23 is communicated with a second hole 29 and then communicated with the upper part of a corresponding port of the flat tube 18, and the mixing cavity 24 is communicated with a third hole 30 and then communicated with another corresponding port of the flat tube 18; and the water inlet interface 25 and the water outlet interface 26 are further arranged on the water inlet-outlet adapter 21, the water inlet interface 25 is communicated with the water inlet cavity 22, the water outlet interface 26 is communicated with the water outlet cavity 23, so that water entering from the water inlet interface 25 can flow into the flat tube 18 through the water inlet cavity 22, then is mixed in the mixing cavity 24, and finally flows through the water outlet cavity 23 and flows out of the water outlet interface 26.

The inside of the flat tube 18 is provided with a baffle plate 32, the baffle plate 32 divides the inner space of the flat tube 18 into an upper part and a lower part, the position of the baffle plate 32 is positioned on the contact interface of the water inlet cavity 22 and the water outlet cavity 23, thus the whole flat tube 18 can be divided into an upper part and a lower part according to the lengths of the water inlet cavity 22 and the water outlet cavity 23, and the burner 7 is positioned above the baffle plate 32.

In the embodiment, the number of the flat tubes 19 assembled into the flat tube 18 is 16, and under the same power operation condition of the burner 7, the heat exchange efficiency of the flat tube 18 of the type is 99.2%, and the heat exchange efficiency of the coil pipe under the traditional equivalent condition is 96.9%, so that the heat exchanger in the embodiment is higher in efficiency.

The novel hanging stove heat exchanger working mode in this embodiment is: firstly, the flue gas containing heat is generated through the burner 7, and the flue gas is emitted from the burner 6 into the inner cavity of the flat tube 18, and because of the resisting effect of the baffle plate 32, the flue gas containing heat exchanges energy with the water body in the upper part tube of the flat tube 18, then enters the lower part of the flat tube 18 from the gap between the flat tubes 19, and along with the loss of energy, waste gas is formed, finally, the waste gas enters the transition flue gas cavity 17 from the first communication port 31, and finally, the waste gas is discharged from the smoke outlet 4.

It should be noted that, because the partition plate 32 is disposed inside the flat tube 18, and external low-temperature water enters the lower portion of the flat tube 18 from the water inlet chamber 22, enters the upper portion of the flat tube 18 after being mixed in the mixing chamber 24, and finally is discharged from the water outlet chamber 23, water just entering the flat tube 18 is preheated in the lower portion and enters the upper portion after being heated, so that condensate water is prevented from being formed on the upper portion of the flat tube 18, and damage to the burner 7 is avoided, and meanwhile, because the flat tube 19 above the partition plate 32 is more than below, the water flow speed above the flat tube 18 is slower than below, and heat exchange can be better performed.

The novel condensing wall-mounted boiler heat exchanger further comprises another embodiment, and compared with the first embodiment, the other embodiment is different in that heat insulation pads are arranged at the upper end and the lower end of the flat tube 18, the lower end of the flat tube 18 is fixedly connected with the upper end face of the bottom plate 15 through the heat insulation pads, and the upper end is tightly abutted against the lower end face of the end cover 6 through the heat insulation pads.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed application.

The embodiments described above and features of the embodiments herein may be combined with each other without conflict.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. Novel condensing wall-mounted boiler heat exchanger, characterized by comprising:

The shell cylinder mechanism (1) is internally provided with a transition smoke cavity (17) in the wall, the outer wall of the shell cylinder mechanism is provided with a smoke outlet (4) communicated with the transition smoke cavity (17), the upper end of the shell cylinder mechanism (1) is provided with an end cover (6) in a sealing way, the end cover (6) and the end cover form a sealing cavity, and the end cover (6) is provided with a combustor (7) extending to the inner center of the shell cylinder mechanism (1);

And the heat exchange mechanism (2) is positioned in the shell barrel mechanism (1), and comprises a plurality of flat pipes (19) and a water inlet and outlet adapter (21), wherein each flat pipe (19) is sequentially arranged in a lamination mode from top to bottom to form a flat barrel (18), two ports of each flat pipe (19) are flush with and correspond to two ports of each flat pipe (19) to form two ports of the flat barrel (18), two ports of each flat barrel (18) penetrate through the shell barrel mechanism (1) and extend to the outside, a water inlet cavity (22) is formed in the lower end of one side of the inner portion of the water inlet and outlet adapter (21), a water outlet cavity (23) is formed in the upper end of the water inlet and outlet adapter (21) and two ports of each flat barrel (18), and the water inlet cavity (22) and the water outlet cavity (23) are respectively communicated with the upper portion and the lower portion of one port of each flat barrel (18) in a sealing mode, and the mixing cavity (24) is communicated with the other port of the other flat barrel (18) in a sealing mode.

2. The novel condensing wall-mounted boiler heat exchanger as set forth in claim 1, wherein: the shell section of thick bamboo mechanism (1), it includes outer shell (3) and inner tube shell (11), wherein interior shell (11) holding is in outer shell (3) and form between the two and be equipped with transition smoke chamber (17), exhaust port (4) set up on outer wall of outer shell (3), transition smoke chamber (17) with the inside intercommunication of inner tube shell (11), outer shell (3) upper end sealing connection is equipped with end cover (6), combustor (7) are located the inside center department of inner tube shell (11).

3. The novel condensing wall-mounted boiler heat exchanger as claimed in claim 2, wherein: the utility model discloses a flat tube (18) both ends mouth is from inside to outside passed in proper order inner tube shell (11) with outer tube shell (3) and extend to outside, business turn over water adapter (21) with be equipped with adapter plate (27) between flat tube (18) both ends mouth, business turn over water adapter (21) pass through adapter plate (27) with flat tube (18) both ends mouth sealing fixed connection, adapter plate (27) one side lower extreme is equipped with first hole (28), upper end is equipped with second hole (29), and the opposite side is equipped with third hole (30), intake chamber (22) with go out water chamber (23) respectively through first hole (28) with second hole (29) with flat tube (18) corresponding end intercommunication, hybrid chamber (24) pass through third hole (30) with flat tube (18) corresponding end intercommunication.

4. A novel condensing wall-mounted boiler heat exchanger as claimed in claim 3, wherein: the water inlet and outlet adapter (21) is provided with a water inlet interface (25) and a water outlet interface (26), the water inlet interface (25) is communicated with the water inlet cavity (22), and the water outlet interface (26) is communicated with the water outlet cavity (23).

5. The novel condensing wall-mounted boiler heat exchanger as claimed in claim 2, wherein: the utility model discloses a burner, including flat bobbin (18), inner tube shell (11), combustor (7), baffle (32) are equipped with in flat bobbin (18), flat bobbin (18) axis with inner tube shell (11) axis coincidence, just combustor (7) are located flat bobbin (18) inside center department, inside baffle (32) that are equipped with of flat bobbin (18), baffle (32) with flat bobbin (18) inner wall fixed connection, combustor (7) are located baffle (32) top, combustor (7) upper end intercommunication is equipped with premix cavity (8).

6. The novel condensing wall-mounted boiler heat exchanger as claimed in claim 2, wherein: the inner cylinder shell (11) comprises a cylinder body (12) and a supporting plate (13) with upper and lower ends being open, wherein the flat cylinder tube (18) is located in the cylinder body (12), the supporting plate (13) is located below the cylinder body (12), the lower end of the cylinder body (12) is fixedly connected with the inner wall of the supporting plate (13), the outer wall of the supporting plate (13) is fixedly connected with the side inner wall of the outer cylinder shell (3) and forms a transition smoke cavity (17) between the two, and the transition smoke cavity (17) is communicated with the inside of the cylinder body (12).

7. The novel condensing wall-mounted boiler heat exchanger as set forth in claim 6, wherein: the utility model provides a cylinder, including cylinder shell (3), layer board (13) appearance is class L form, and it includes integrated into one piece's bottom plate (15) and curb plate (16), wherein bottom plate (15) the lower terminal surface with the up end fixed connection of urceolus shell (3) bottom surface, up end with barrel (12) lower extreme fixed connection, curb plate (16) outer wall with urceolus shell (3) side inner wall fixed connection, the up end of urceolus shell (3) bottom surface is equipped with first recess (9), is equipped with second recess (10) on the side inner wall, first recess (9) with second recess (10) intercommunication, just second recess (10) with exhaust port (4) intercommunication, bottom plate (15) with curb plate (16) shelter from respectively first recess (9) with second recess (10) are in order to form transition smoke chamber (17), be equipped with first communication port (31) on bottom plate (15), first recess (9) are through first communication port (31) with barrel (12) inside intercommunication.

8. The novel condensing wall-mounted boiler heat exchanger as set forth in claim 1, wherein: a gap is reserved between any two adjacent flat pipes (19).

9. The novel condensing wall-mounted boiler heat exchanger as set forth in claim 6, wherein: the barrel (12) is provided with a second communication port (14), the outer wall of the outer barrel shell (3) is provided with a condensed water outlet (5), and the condensed water outlet (5) corresponds to the second communication port (14).

10. The novel condensing wall-mounted boiler heat exchanger as set forth in claim 7, wherein: at least one clamping frame (20) is arranged in the cylinder body (12), the flat tube barrel (18) is fixedly clamped on each clamping frame (20), the upper end of each clamping frame (20) is fixedly connected with the end cover (6), and the lower end of each clamping frame is fixedly connected with the bottom plate (15).