CN115265253A

CN115265253A - Fin structure, heat exchanger and hot water device

Info

Publication number: CN115265253A
Application number: CN202110486349.0A
Authority: CN
Inventors: 熊晓俊; 李龙; 陆祖安; 倪双跃; 杜小文; 杨万沔; 梁国荣; 刘国虎
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-11-01

Abstract

An embodiment of the present invention provides a fin structure, a heat exchanger, and a water heating apparatus, wherein the fin structure includes: the fin base comprises a first base plate and a second base plate which are connected; a plurality of first pipe holes arranged on the first substrate; a plurality of second pipe holes arranged on the second substrate; the bridge structures are arranged on the second substrate and protrude out of the second substrate; the flue gas flows to the gaps of the second pipe holes through the gaps of the first pipe holes and the bridge structures. According to the technical scheme, the bridge structure is arranged, so that on one hand, the overall strength of the fin substrate can be improved, and the copper fin substrate is not easy to deform in the manufacturing and circulating process; on the other hand, the bridge structure can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure can also increase the heat exchange area, reduce the quantity of required fin bases and reduce the cost.

Description

Fin structure, heat exchanger and hot water system

Technical Field

The embodiment of the invention relates to the technical field of water heating devices, in particular to a fin structure, a heat exchanger and a water heating device.

Background

In the related art, the flue gas-water heat exchanger in the related art mostly adopts a tube fin type heat exchanger, and high-temperature flue gas flows through a fin base and can heat water flow in a water pipe. As the temperature of the flue gas is up to 1100 ℃, the base of the fin can adopt copper or stainless steel materials. Stainless steel is far less machinable than copper, but copper is expensive, resulting in high cost pressures on the heat exchanger.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of an embodiment of the present invention is to provide a fin structure.

Another object of an embodiment of the present invention is to provide a heat exchanger having the above-described fin structure.

Another object of an embodiment of the present invention is to provide a hot water apparatus having the above heat exchanger.

To achieve the above object, an embodiment of a first aspect of the present invention provides a fin structure, including: the fin base comprises a first base plate and a second base plate which are connected; a plurality of first pipe holes arranged on the first substrate; a plurality of second pipe holes arranged on the second substrate; the bridge structures are arranged on the second substrate and protrude out of the second substrate; the flue gas flows to the gaps of the second pipe holes through the gaps of the first pipe holes and the bridge structures.

According to the embodiment of the fin structure provided by the invention, the bridge structure is arranged, so that on one hand, the overall strength of the fin substrate can be improved, and the copper fin substrate is not easy to deform in the manufacturing and circulating process; on the other hand, the bridge structure can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure can also increase the heat exchange area, reduce the quantity of required fin bases and reduce the cost. The fin structure that this application provided has high efficiency, reliability height, advantage with low costs.

Specifically, the fin structure includes a fin base, a first tube aperture, a second tube aperture, and a bridge structure. Wherein, the fin base is the plate structure, can be arbitrary shape according to actual demand. The fin base comprises a first base plate and a second base plate which are connected, and the fin base is formed by two sections of base plates, particularly, the two sections of base plates can be connected in a welding mode, so that the processing and the production are convenient; or, first base plate and second base plate formula structure as an organic whole, for the mode of post-processing, mechanical properties is good, and joint strength is higher, and is favorable to reducing the quantity of spare part, and then can reduce the installation procedure, improves the installation effectiveness.

Further, the number of the first pipe holes and the number of the second pipe holes are both multiple. Specifically, the plurality of first pipe holes are formed in the first substrate, and the plurality of second pipe holes are formed in the second substrate. The pipe holes are used for being assembled with the water pipes, and the fin substrate can be connected with the water pipes at the same time through the arrangement of the plurality of pipe holes. Furthermore, the plurality of pipe holes are arranged on the fin substrate in a row, namely the pipe holes are arranged in a row or a column in an aligned mode, the arrangement mode is easy to clean, when smoke or other media flow through the fin substrate, the resistance is small, but the heat transfer coefficient is small and the heat exchange area is large compared with a staggered arrangement mode under the same condition; or, the plurality of pipe holes are arranged on the fin base in a staggered manner, namely, the pipe holes are not all arranged in alignment in the row or column direction, the arrangement mode can improve the disturbance capacity to flue gas or other media, the heat transfer coefficient is large, and the heat exchange area is favorably reduced under the same condition. It should be noted that the orifice may be circular or oval, or may have other shapes. Furthermore, the flanging can be arranged at the edge of the pipe hole, so that the pipe hole and the water pipe are more conveniently connected, and the connection strength of the pipe hole and the water pipe can be improved.

Further, the number of bridge structures is plural. A plurality of bridge structures are arranged on the second substrate, the bridge structures protrude out of the second substrate, in other words, the bridge structures are formed by the second substrate in a protruding mode, the bridge structures and the second substrate are of an integrated structure, and compared with a post-processing mode, the bridge structures are good in mechanical property and high in connection strength. In conventional plate heat exchanger, the medium is refrigerant or water, and the medium in this application can be the flue gas. The flue gas flows to the gaps of the second pipe holes through the gaps of the pipe holes and the bridge structures, in other words, the flue gas flows to one side of the second base plate far away from the first base plate from one side of the first base plate far away from the second base plate, and the flue gas needs to pass through the bridge structures in the flowing process.

In the flue gas-water heat exchanger in the related art, a tube fin type heat exchanger is mostly adopted, and high-temperature flue gas flows through a fin base to heat water flow in a water pipe. As the temperature of the flue gas is up to 1100 ℃, the base of the fin can be made of copper or stainless steel. Stainless steel is far less machinable than copper, but copper is expensive, resulting in high cost pressures on the heat exchanger.

The shape of the bridge structure in the present application may be a straight shape, a U shape, a V shape, or the like. By arranging the bridge structure, on one hand, the overall strength of the fin substrate can be improved, so that the copper fin substrate is not easy to deform in the manufacturing and circulating process; on the other hand, the bridge structure can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure can also increase the heat exchange area, reduce the quantity of required fin bases and reduce the cost. The fin structure that this application provided has high efficiency, reliability height, advantage with low costs.

In addition, the technical scheme provided by the invention can also have the following additional technical characteristics:

in the above technical solution, the method further comprises: the first flanging extends from the first pipe hole to one side of the first base plate; the second flanging extends from the second pipe hole to one side of the second base plate, and the extending direction of the first flanging is the same as that of the second flanging.

In the technical scheme, the fin structure further comprises a first flanging and a second flanging. Specifically, the first flanging extends from the first pipe hole to one side of the first base plate, and the second flanging extends from the second pipe hole to one side of the second base plate, so that the first flanging and the first base plate are of an integrated structure, and the second flanging and the second base plate are of an integrated structure, so that compared with a post-processing mode, the mechanical property is good, and the connection strength is higher. In addition, through setting up first turn-ups and second turn-ups, the staff of being convenient for is connected the tube hole with the water pipe, can improve first tube hole and water pipe to and the joint strength between second tube hole and the water pipe.

Furthermore, the extending direction of the first flanging is the same as that of the second flanging, so that the water pipes connected with the first pipe holes and the water pipes connected with the second pipe holes can be located on the same side of the fin base, and the heat transfer effect of the flue gas can be improved after the flue gas passes through the fin base.

In the above technical solution, the method further comprises: and the welding rod hole is arranged on one side of the first pipe hole close to the second pipe hole and/or on one side of the second pipe hole far away from the first pipe hole.

In this technical scheme, the fin structure still includes the welding rod hole. The welding rod hole is only arranged on one side, close to the second pipe hole, of the first pipe hole; or the welding rod hole is only arranged on one side of the second pipe hole, which is far away from the first pipe hole; or the side of the first pipe hole close to the second pipe hole and the side of the second pipe hole far away from the first pipe hole are both provided with welding rod holes. Through setting up the welding rod hole, can assemble with the welding rod, melt at high temperature welded in-process, make turn-ups and water pipe zonulae occludens be in the same place, and then can reduce thermal contact resistance, the increasing the thermal efficiency.

In the above technical solution, the contour of the side of the first substrate away from the second substrate is adapted to the shape of the first pipe hole.

In the technical scheme, the outline of one side of the first base plate, which is far away from the second base plate, is matched with the shape of the first pipe hole, so that the same distance between the front end of the first base plate in the fin base and the water pipe is ensured, and the local high temperature of the front end of the fin structure is avoided. Specifically, the profile of the front end of the fin and the shape of the first tube hole can be circular, oval or other shapes.

In the above technical solution, the method further comprises: and the at least one hole groove is arranged on one side of the first substrate, which is far away from the second substrate, and each hole groove is arranged between the two first pipe holes.

In this technical scheme, the fin structure still includes the hole groove of locating the one side that the first base plate is kept away from the second base plate, and the hole groove is located the front end of fin base plate promptly. It is worth mentioning that the number of the holes and the slots is at least one, i.e. the number of the holes and the slots may be one, two or more.

Further, all be equipped with a hole groove between per two first tube holes, through setting up the hole groove, can avoid appearing the condition of dry combustion method in the fin region far away from the water pipe.

In the technical scheme, the number of the hole grooves is multiple, and the depth of one of the hole grooves is larger than that of the rest hole grooves.

In this technical scheme, set up to a plurality ofly through the quantity with the hole groove, and the degree of depth of one in a plurality of hole grooves is greater than the degree of depth of all the other hole grooves, can further avoid the fin the condition of dry combustion method to appear, the effect of reinforcing reposition of redundant personnel.

In the above technical solution, the hole groove with a large depth is disposed in the middle of the first substrate.

In this technical scheme, through setting up the great hole groove of degree of depth at the middle part of fin base plate, when connecting two fin base plates, the flue gas of fin base plate both sides can pass through the hole groove intercommunication, and then avoids the fin dry combustion method to appear. Specifically, the depth of the hole groove at the middle position is 1 to 5mm greater than that of the hole grooves at the two sides, and considering the heat release of flame, the temperature of the middle area is higher than that of the left and right sides, so that the design mode can reduce the risk of dry burning at the middle position of the fin structure.

In the above technical solution, the method further comprises: the groove is arranged on one side, away from the first substrate, of the second substrate, and the shape of the groove is matched with the shape of the outline of one side, away from the second substrate, of the first substrate.

In this technical scheme, the fin structure is still including locating the recess that the second base plate kept away from one side of first base plate, and the recess is located the rear end of fin base promptly. Furthermore, the shape of the groove is matched with the shape of the outline of one side, away from the second base plate, of the first base plate, so that the fin bases can be conveniently spliced, and the groove of the second base plate of one fin base can be matched with the front end of the first base plate in the other fin base to realize continuous stamping.

In the above technical solution, the method further comprises: and the side flanging is arranged on two opposite sides of the fin base along the connecting direction of the first base plate and the second base plate.

In this technical scheme, the fin structure still includes the side turn-ups. The side flanging is arranged on two opposite sides of the fin base along the connecting direction of the first base plate and the second base plate, namely the side flanging is positioned on the left side and the right side of the fin base. The flue gas flows to the back of the body cigarette side by the side of meeting the cigarette of fin base plate, through setting up the side turn-ups, can further water conservancy diversion and vortex to the flue gas of flowing to fin base plate both sides, makes the flue gas be close to the water pipe as far as, strengthens heat transfer effect.

In the above technical scheme, the side flanging specifically comprises: the first side edges are arranged on two opposite sides of the first substrate along the connecting direction; the second side edges are arranged on two opposite sides of the second substrate along the connecting direction, and the first side edges are connected with the second side edges.

In the technical scheme, the side flanging specifically comprises a first side edge and a second side edge. The first side edge is arranged on two opposite sides of the first base plate along the two base plate connection directions, the second side edge is arranged on two opposite sides of the second base plate along the two base plate connection directions, in other words, the two side edges are arranged on two opposite sides of the fin base plate along the flue gas flowing direction, the two side edges are connected and are tightly attached to the surrounding frame at the same time, so that the situation that the flue gas passes through the surrounding frame of the heat exchanger and the combustion chamber is avoided, the heat efficiency is reduced, and the combustion chamber is over-temperature. In addition, the length direction of second side is inconsistent with the length direction of first side, has certain angle, therefore the second side with enclose the frame and can form the regional space of triangle-shaped, this kind of design can reduce flue gas and combustion chamber and enclose the frame heat transfer, reduce the combustion chamber and enclose the frame temperature, in addition, can also reduce the heat transfer area of fin basement both sides, improve the temperature of exhanst gas outlet, and then reduce the risk that the comdenstion water produced.

Specifically, the temperatures of the left and right sides of the fin inlet are lower than that of the central portion, so that the temperatures of the left and right side outlets are lower than that of the central portion, and therefore condensed water is easily generated at the left and right side outlets. The front section of the left side and the right side of the fin is tightly attached to the surrounding frame, and a gap is reserved between the rear section of the left side and the right side of the fin and the surrounding frame. This design can obtain two benefits, firstly reduces and encloses the frame temperature, secondly reduces left and right sides heat transfer area, and side exhanst gas outlet temperature about improving reduces the comdenstion water risk.

In the above technical solution, further comprising: the boss structure is arranged on the first substrate, and the flue gas flows to the bridge structure after flowing through the boss structure.

In this technical scheme, the fin structure is still including locating the convex structure on the first base plate, and the flue gas flows to the bridge structure again after flowing through convex structure. Through setting up convex structure, can strengthen the vortex effect to the flue gas, increase the resistance between fin front end and the bridge construction, and then improve the heat transfer effect.

In the technical scheme, the number of the boss structures is multiple, and the sizes of the boss structures positioned on two sides in the plurality of boss structures are smaller than those of the rest boss structures.

In this technical scheme, set up to a plurality ofly through the quantity with boss structure, can further improve the vortex effect to the flue gas, increase resistance is in order to improve the heat transfer effect. Furthermore, the sizes of the boss structures on two sides in the plurality of boss structures are smaller than those of the rest boss structures, namely the resistance of the middle position of the first substrate to the smoke is larger than the resistance of the positions on two sides to the smoke, so that on one hand, the flow speed of the smoke can be controlled, and the turbulence effect is enhanced; on the other hand, can play the effect of guide to the flue gas to a certain extent, further improve the heat transfer effect.

In the above technical solution, a projection of the bridge structure on the second substrate is rectangular, parallelogram or trapezoid.

In this technical scheme, through set up the inner bridge structure in flue gas flow direction, can not only play good vortex effect, destroy the boundary layer, the intensive heat transfer, can also increase heat transfer area, further strengthen the heat transfer to reduce required fin quantity, reduce cost. Furthermore, the projection of the bridge structure on the second substrate is rectangular, parallelogram or trapezoidal, namely, a single bridge structure is rectangular, trapezoidal or parallelogram, the bridge width is 2mm-5mm, and the drainage and flow guide effects of the bridge structure can be further improved.

In the technical scheme, the width of the bridge structure is 2-5 mm.

In the technical scheme, the width of the bridge structure is controlled to be 2mm to 5mm, so that on one hand, the bridge structure is prevented from being too wide to influence the flow speed of flue gas, and the temperature of the fin structure is prevented from being too high; on the other hand, can avoid bridge structure to be too narrow, and is poor to vortex, the water conservancy diversion ability of flue gas, and then influences the heat transfer effect.

It is worth noting that the bridge structure is directly stamped on the fin base by a stamping process.

In the above technical solution, the bridge structures are partially V-shaped and disposed on the second substrate.

In this technical scheme, set up to the V type through the part with in a plurality of bridge structures to can play the effect of water conservancy diversion to the flue gas, guide the flue gas to the position that the fin basement is close to both sides, conveniently carry out the heat transfer with the water pipe, and then can improve heat transfer effect.

In the above technical solution, the method further comprises: the opening flanging is arranged on the second base plate, the opening flanging is arranged on one side, away from the first base plate, of the bridge structure, and the opening of the opening flanging faces towards one side, away from the first base plate.

In this technical scheme, the fin structure still includes the opening turn-ups of locating on the second base plate. Specifically, the opening flanging is arranged on one side, away from the first base plate, of the bridge structure, and the opening of the opening flanging faces towards one side, away from the first base plate. When the smoke flows from the smoke facing side to the smoke back side of the fin base plate, the opening flanging can guide the smoke to the two sides of the fin base plate and the position close to the water pipe, in other words, the smoke at the outlet is guided, the smoke flows around the wake region of the water pipe, and the heat transfer effect is enhanced.

In the above technical solution, the plurality of first pipe holes are arranged along the first direction, the plurality of second pipe holes are arranged along the first direction, and the first pipe holes and the second pipe holes are arranged in a staggered manner.

In this technical scheme, all set up along first direction through a plurality of first tube holes and a plurality of second tube hole, and first tube hole and second tube hole fork are arranged the setting, and the tube hole is not the setting of lining up promptly, and this kind of arrangement can improve the disturbance ability to flue gas or other medium, and heat transfer coefficient is big, is favorable to reducing heat transfer area under the same condition, and then is favorable to reducing thermal inertia, has less temperature rise of cutting off the water supply.

An embodiment of a second aspect of the invention provides a heat exchanger comprising: a heat exchange tube; a plurality of the fin structures of any of the above embodiments, the plurality of fin structures being arranged side by side.

An embodiment of a heat exchanger according to the present invention comprises a heat exchange tube and a plurality of fin structures. Specifically, a plurality of fin structures set up side by side, are favorable to improving the utilization ratio in space, reinforcing heat transfer effect. In addition, when a plurality of fin bases are spliced with each other, the front end of a first base plate in one fin base is matched with the rear end of a second base plate in the other fin base, and due to the fact that the outline of the front end of the first base plate is matched with the shape of the pipe hole and the shape of the groove is matched with the shape of the smoke facing side, continuous stamping of different fin bases is facilitated, and production efficiency is improved.

The heat exchanger comprises any fin structure in the first aspect, so that the heat exchanger has the beneficial effects of any embodiment, and the description is omitted here.

Embodiments of the third aspect of the invention provide a water heating apparatus comprising: a water tank; in the heat exchanger in the above embodiment, the water tank is communicated with the heat exchange tube in the heat exchanger.

According to an embodiment of the water heating apparatus of the present invention, the water heating apparatus includes a water tank and a heat exchanger. Specifically, the water tank is linked together with the heat exchange tube in the heat exchanger, and the heat exchanger carries out the heat transfer with the rivers in the water pipe, heats the water in the water pipe promptly according to predetermineeing the temperature, and then the hydroenergy after the heating can be stored in the water tank.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

FIG. 1 shows a schematic view of a fin structure according to one embodiment of the invention;

FIG. 2 shows a schematic view of a fin structure according to another embodiment of the invention;

FIG. 3 shows a schematic view of a side cuff according to one embodiment of the present invention;

FIG. 4 shows a schematic view of a fin structure according to another embodiment of the invention;

FIG. 5 shows a schematic block diagram of a heat exchanger according to an embodiment of the present invention;

fig. 6 shows a schematic block diagram of a hot water device according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 6 is:

100: a fin structure; 110: a fin base; 111: a first substrate; 112: a second substrate; 121: a first tube hole; 122: a first flanging; 123: a second tube hole; 124: second flanging; 130: a bridge structure; 140: welding rod holes; 151: a hole groove; 152: a groove; 160: side flanging; 161: a first side edge; 162: a second side edge; 170: a boss structure; 180: opening and flanging; 200: a heat exchanger; 210: a heat exchange pipe; 300: a hot water device; 310: a water tank.

Detailed Description

In order that the above objects, features and advantages of the embodiments of the present invention can be more clearly understood, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, embodiments of the present invention may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.

A fin structure 100, a heat exchanger 200, and a hot water apparatus 300 provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

Example one

As shown in fig. 1, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first pipe hole 121, a second pipe hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 comprises a first base plate 111 and a second base plate 112 which are connected, and it can be understood that the fin base 110 is composed of two sections of base plates, specifically, the two sections of base plates can be connected in a welding manner, so that the processing and production are convenient; or, the first substrate 111 and the second substrate 112 are of an integrated structure, and compared with a post-processing mode, the mechanical property is good, the connection strength is higher, and the number of parts is reduced, so that the number of mounting processes can be reduced, and the mounting efficiency is improved.

Further, the number of the first pipe holes 121 and the number of the second pipe holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed on the first substrate 111, and a plurality of second pipe holes 123 are formed on the second substrate 112. The tube holes are used for assembling with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected with a plurality of water tubes at the same time. Furthermore, the plurality of tube holes are arranged in a row on the fin base 110, that is, the tube holes are aligned in one row or one column, the arrangement mode is easy to clean, when smoke or other media flow through the fin base 110, the resistance is small, but the heat transfer coefficient is small and the heat exchange area is large compared with the staggered arrangement mode under the same condition; or, the plurality of pipe holes are arranged on the fin base 110 in a staggered manner, that is, the pipe holes are not all arranged in alignment in the row or column direction, the arrangement mode can improve the disturbance capability to flue gas or other media, the heat transfer coefficient is large, and the heat exchange area is favorably reduced under the same condition. It should be noted that the orifice may be circular or oval, and may have other shapes. Furthermore, the flanging can be arranged at the edge of the pipe hole, so that the pipe hole and the water pipe can be connected more conveniently, and the connection strength of the pipe hole and the water pipe can be improved.

Further, the number of the bridge structures 130 is plural. The plurality of bridge structures 130 are disposed on the second substrate 112, and the bridge structures 130 protrude out of the second substrate 112, in other words, the bridge structures 130 are formed by protruding the second substrate 112, and the bridge structures 130 and the second substrate 112 are an integrated structure, which has good mechanical properties and higher connection strength compared to a post-processing method. In the conventional plate heat exchanger 200, the medium is a refrigerant or water, and the medium in this application may be flue gas. The flue gas flows from the gaps of the plurality of pipe holes to the gaps of the plurality of second pipe holes 123 through the plurality of bridge structures 130, in other words, the flue gas flows from the side of the first substrate 111 far away from the second substrate 112 to the side of the second substrate 112 far away from the first substrate 111, and the flue gas needs to pass through the plurality of bridge structures 130 in the flowing process.

In the flue gas-water heat exchanger 200 in the related art, the tube-fin heat exchanger 200 is mostly adopted, and high-temperature flue gas flows through the fin base 110 and heats water flow in the water pipe. The fin base 110 may be made of copper or stainless steel due to the temperature of the flue gas as high as 1100 deg.C. Stainless steel is far less machinable than copper, but copper is expensive, resulting in high cost pressures for heat exchanger 200.

The shape of the bridge structure 130 in this application may be a straight line, a U-shape, a V-shape, or the like. By arranging the bridge structure 130, on one hand, the overall strength of the fin base 110 can be improved, so that the copper fin base 110 is not easy to deform in the manufacturing and transferring process; on the other hand, the bridge structure 130 can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure 130 can increase the heat exchange area, reduce the number of the required fin bases 110, and reduce the cost. The fin structure 100 provided by the application has the advantages of high efficiency, high reliability and low cost.

Example two

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected to each other, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed on the first substrate 111, and a plurality of second pipe holes 123 are formed on the second substrate 112. The tube holes are used for fitting with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected to a plurality of water tubes at the same time.

Further, the number of the bridge structures 130 is plural. The plurality of bridge structures 130 are disposed on the second substrate 112, and the bridge structures 130 protrude from the second substrate 112, in other words, the bridge structures 130 are formed by protruding the second substrate 112, and the bridge structures 130 and the second substrate 112 are an integrated structure. The flue gas flows from the gaps of the pipe holes to the gaps of the second pipe holes 123 through the bridge structures 130, in other words, the flue gas flows from the side of the first substrate 111 far away from the second substrate 112 to the side of the second substrate 112 far away from the first substrate 111, and needs to pass through the bridge structures 130 in the flowing process.

The shape of the bridge structure 130 in this application may be a straight shape, a U shape, a V shape, or the like. By arranging the bridge structure 130, on one hand, the overall strength of the fin base 110 can be improved, so that the copper fin base 110 is not easy to deform in the manufacturing and transferring process; on the other hand, the bridge structure 130 can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure 130 can increase the heat exchange area, reduce the number of the required fin bases 110, and reduce the cost. The fin structure 100 provided by the application has the advantages of high efficiency, high reliability and low cost.

Further, the fin structure 100 further includes a first flange 122 and a second flange 124. Specifically, the first flange 122 extends from the first pipe hole 121 to one side of the first base plate 111, and the second flange 124 extends from the second pipe hole 123 to one side of the second base plate 112, it can be understood that the first flange 122 and the first base plate 111 are of an integral structure, and the second flange 124 and the second base plate 112 are of an integral structure, compared with a post-processing method, the mechanical property is good, and the connection strength is higher. In addition, through setting up first turn-ups 122 and second turn-ups 124, the staff of being convenient for is connected the tube hole with the water pipe, can improve the joint strength between first tube hole 121 and the water pipe to and the second tube hole 123 and the water pipe.

Further, the extending direction of the first turned-over edge 122 is the same as that of the second turned-over edge 124, so that the water pipes connected with the first pipe holes 121 and the water pipes connected with the second pipe holes 123 are located on the same side of the fin base 110, and further, the heat transfer effect of the flue gas can be improved after the flue gas passes through the fin base 110.

EXAMPLE III

Further, the number of the bridge structures 130 is plural. The plurality of bridge structures 130 are disposed on the second substrate 112, and the bridge structures 130 protrude from the second substrate 112, in other words, the bridge structures 130 are formed by protruding the second substrate 112, and the bridge structures 130 and the second substrate 112 are an integrated structure. The flue gas flows from the gaps of the plurality of pipe holes to the gaps of the plurality of second pipe holes 123 through the plurality of bridge structures 130, in other words, the flue gas flows from the side of the first substrate 111 far away from the second substrate 112 to the side of the second substrate 112 far away from the first substrate 111, and the flue gas needs to pass through the plurality of bridge structures 130 in the flowing process.

Further, the fin structure 100 further includes a solder bar hole 140. The side of the first pipe hole 121 close to the second pipe hole 123 and the side of the second pipe hole 123 far from the first pipe hole 121 are both provided with welding rod holes 140. Through setting up welding rod hole 140, can assemble with the welding rod, melt at high temperature welded in-process, make turn-ups and water pipe zonulae occludens together, and then can reduce thermal contact resistance, the increase of thermal efficiency.

In another embodiment, the electrode hole 140 is provided only at a side of the first tube hole 121 close to the second tube hole 123.

In another embodiment, the electrode bore 140 is provided only at a side of the second tube bore 123 remote from the first tube bore 121.

Example four

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected to each other, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed in the first substrate 111, and a plurality of second pipe holes 123 are formed in the second substrate 112. The tube holes are used for assembling with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected with a plurality of water tubes at the same time.

Further, by matching the profile of the side of the first base plate 111 away from the second base plate 112 with the shape of the first tube hole 121, the distance between the front end of the first base plate 111 in the fin base 110 and the water tube is ensured to be the same, and the local high temperature at the front end of the fin structure 100 is avoided. Specifically, the profile of the front end of the fin and the shape of the first tube hole 121 may be the same as a circle, an ellipse, or other shapes.

EXAMPLE five

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed on the first substrate 111, and a plurality of second pipe holes 123 are formed on the second substrate 112. The tube holes are used for assembling with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected with a plurality of water tubes at the same time.

The shape of the bridge structure 130 in this application may be a straight shape, a U shape, a V shape, or the like. By arranging the bridge structure 130, on one hand, the overall strength of the fin base 110 can be improved, so that the fin base 110 made of copper is not easy to deform in the manufacturing and transferring processes; on the other hand, the bridge structure 130 can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure 130 can increase the heat exchange area, reduce the number of the required fin bases 110, and reduce the cost. The fin structure 100 provided by the application has the advantages of high efficiency, high reliability and low cost.

Further, the fin structure 100 further includes a hole groove 151 disposed on a side of the first substrate 111 away from the second substrate 112, i.e., the hole groove 151 is located at a front end of the fin substrate. It is noted that the number of the hole grooves 151 is at least one, that is, the number of the hole grooves 151 may be one, two or more.

Further, all be equipped with a hole groove 151 between per two first tube holes 121, through setting up hole groove 151, can avoid appearing the condition of dry combustion method in the fin region far away from the water pipe.

In another embodiment, the number of the holes 151 is set to be multiple, and the depth of one of the holes 151 is greater than the depths of the other holes 151, so that the dry burning of the fins can be further avoided, and the flow distribution effect is enhanced.

In another embodiment, the hole slots 151 with a large depth are arranged in the middle of the fin base plates, so that when the two fin base plates are connected, smoke on two sides of the fin base plates can be communicated through the hole slots 151, and dry burning of the fins is avoided. Specifically, the depth of the hole groove 151 located at the middle position is 1 to 5mm greater than the depth of the hole grooves 151 located at both sides, and considering the heat release of the flame, the temperature of the middle area may be higher than the temperatures of the left and right sides, which can reduce the risk of dry burning at the middle position of the fin structure 100.

Example six

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected to each other, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed in the first substrate 111, and a plurality of second pipe holes 123 are formed in the second substrate 112. The tube holes are used for fitting with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected to a plurality of water tubes at the same time.

Further, the fin structure 100 further includes a groove 152 disposed on a side of the second base plate 112 away from the first base plate 111, i.e., the groove 152 is located at the rear end of the fin base 110. Further, the shape of the groove 152 is matched with the shape of the profile of the first base plate 111 on the side away from the second base plate 112, so that the fin bases 110 can be spliced conveniently, and the groove 152 of the second base plate 112 of one fin base 110 can be matched with the front end of the first base plate 111 in another fin base 110, so as to realize continuous stamping.

EXAMPLE seven

Further, the fin structure 100 further includes side turned-up edges 160. The side flanges 160 are disposed on two opposite sides of the fin base 110 along the connection direction of the first base plate 111 and the second base plate 112, that is, the side flanges 160 are disposed on the left and right sides of the fin base 110. The flue gas flows to the back of the body cigarette side by the side of meeting the cigarette of fin base plate, through setting up side turn-ups 160, can further water conservancy diversion and vortex to the flue gas of flowing to fin base plate both sides, makes the flue gas be close to the water pipe as far as, strengthens heat transfer effect.

Example eight

Further, the fin structure 100 further includes side turned-up edges 160. The side flanges 160 are disposed on two opposite sides of the fin base 110 along the connection direction of the first base plate 111 and the second base plate 112, that is, the side flanges 160 are disposed on the left and right sides of the fin base 110. As shown in fig. 3, the side flanges 160 specifically include a first side 161 and a second side 162. The first side 161 is disposed on two opposite sides of the first substrate 111 along two substrate connection directions, and the second side 162 is disposed on two opposite sides of the second substrate 112 along two substrate connection directions, in other words, the two sides are both located on two opposite sides of the fin substrate along the flow of the flue gas, and the two sides are connected and tightly attached to the enclosure frame at the same time, so as to prevent the flue gas from passing through the enclosure frame of the heat exchanger 200 and the combustion chamber, which causes a reduction in thermal efficiency, and the combustion chamber enclosure frame is over-temperature. In addition, the length direction of second side 162 is inconsistent with the length direction of first side 161, has certain angle, therefore second side 162 with enclose the frame and can form the regional space of triangle-shaped, this kind of design can reduce flue gas and the combustion chamber and enclose the frame heat transfer, reduce the combustion chamber and enclose the frame temperature, in addition, can also reduce the heat transfer area of fin basement 110 both sides, improve the temperature of exhanst gas outlet, and then reduce the risk that the comdenstion water produced.

It is worth to be noted that, the first side edge 161 and the second side edge 162 are of an integrated structure, and compared with a post-processing mode, the mechanical property is good, the connection strength is higher, and the number of parts is favorably reduced.

Specifically, the temperatures of the left and right sides of the fin inlet are lower than that of the central portion, so that the temperatures of the left and right side outlets are lower than that of the central portion, and therefore condensed water is easily generated at the left and right side outlets. The front sections of the left and right sides of the fins are tightly attached to the enclosure frame, and gaps are reserved between the rear sections of the left and right sides of the fins and the enclosure frame. This design can obtain two benefits, firstly reduces and encloses the frame temperature, secondly reduces left and right sides heat transfer area, and side exhanst gas outlet temperature about improving reduces the comdenstion water risk.

Example nine

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed in the first substrate 111, and a plurality of second pipe holes 123 are formed in the second substrate 112. The tube holes are used for assembling with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected with a plurality of water tubes at the same time.

Further, the fin structure 100 further includes a boss structure 170 disposed on the first substrate 111, and the flue gas flows to the bridge structure 130 after flowing through the boss structure 170. Through setting up convex structure 170, can strengthen the vortex effect to the flue gas, increase the resistance between fin front end and the bridge construction 130, and then improve the heat transfer effect.

Further, set up to a plurality ofly through the quantity with convex structure 170, can further improve the vortex effect to the flue gas, increase resistance is in order to improve the heat transfer effect. Furthermore, the sizes of the boss structures 170 on two sides of the plurality of boss structures 170 are smaller than those of the rest boss structures 170, that is, the resistance of the middle position of the first substrate 111 to the flue gas is larger than the resistance of the positions on two sides to the flue gas, so that on one hand, the flow speed of the flue gas can be controlled, and the turbulent flow effect is enhanced; on the other hand, can play the effect of guide to the flue gas to a certain extent, further improve the heat transfer effect.

EXAMPLE ten

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed in the first substrate 111, and a plurality of second pipe holes 123 are formed in the second substrate 112. The tube holes are used for fitting with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected to a plurality of water tubes at the same time.

Further, the inner bridge structure 130 is arranged in the smoke flowing direction, so that a good turbulent flow effect can be achieved, a boundary layer is damaged, heat transfer is enhanced, the heat exchange area can be increased, heat transfer is further enhanced, the number of required fins is reduced, and cost is reduced. Further, the projection of the bridge structure 130 on the second substrate 112 is rectangular, parallelogram or trapezoidal, that is, a single bridge structure 130 is rectangular, trapezoidal or parallelogram, and the bridge width is 2-5mm, so that the effects of flow guiding and diversion of the bridge structure 130 can be further improved.

EXAMPLE eleven

Further, the bridge structure 130 has a width of 2mm to 5mm. By controlling the width of the bridge structure 130 to be 2mm to 5mm, on one hand, the bridge structure 130 can be prevented from being too wide to influence the flow speed of the flue gas, and the temperature of the fin structure 100 is prevented from being too high; on the other hand, the bridge structure 130 can be prevented from being too narrow, so that the turbulent flow and the flow guiding capability of the flue gas are poor, and the heat exchange effect is further influenced.

It is worth noting that the bridge structure 130 is stamped directly onto the fin base 110 by a stamping process.

EXAMPLE twelve

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed on the first substrate 111, and a plurality of second pipe holes 123 are formed on the second substrate 112. The tube holes are used for fitting with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected to a plurality of water tubes at the same time.

Further, portions of the plurality of bridge structures 130 are V-shaped and disposed on the second substrate 112. Set up to the V type through the part with among a plurality of bridge structures 130 to can play the effect of water conservancy diversion to the flue gas, guide the flue gas to the position that fin basement 110 is close to both sides, conveniently carry out the heat transfer with the water pipe, and then can improve heat transfer effect.

EXAMPLE thirteen

As shown in fig. 1 to 4, a fin structure 100 according to an embodiment of the present invention includes a fin base 110, a first tube hole 121, a second tube hole 123, and a bridge structure 130. The fin base 110 is a plate structure, and may have any shape according to actual requirements. The fin base 110 includes a first base plate 111 and a second base plate 112 connected to each other, and the number of the first tube holes 121 and the number of the second tube holes 123 are plural. Specifically, a plurality of first pipe holes 121 are formed on the first substrate 111, and a plurality of second pipe holes 123 are formed on the second substrate 112. The tube holes are used for assembling with water tubes, and by providing a plurality of tube holes, the fin base 110 can be connected with a plurality of water tubes at the same time.

Further, the fin structure 100 further includes an opening flange 180 disposed on the second base plate 112. Specifically, the opening flange 180 is disposed on a side of the bridge structure 130 away from the first base plate 111, and an opening of the opening flange 180 faces the side away from the first base plate 111. When the flue gas flows from the smoke facing side to the smoke back side of the fin base plate, the opening flanging 180 can guide the flue gas to the two sides of the fin base plate and the position close to the water pipe, in other words, the flue gas at the outlet is guided, so that the flue gas flows around the wake region of the water pipe, and the heat transfer effect is enhanced.

Example fourteen

Further, the plurality of first pipe holes 121 are arranged in a first direction, and the plurality of second pipe holes 123 are arranged in the first direction. Through all following first direction setting with a plurality of first tube holes 121 and a plurality of second tube hole 123, and first tube hole 121 and second tube hole 123 fork are arranged, and the tube hole is not the setting of lining up promptly, and this kind of arrangement can improve the disturbance ability to flue gas or other medium, and heat transfer coefficient is big, is favorable to reducing heat transfer area under the same condition, and then is favorable to reducing thermal inertia, has less temperature rise of cutting off the water supply.

Example fifteen

As shown in fig. 5, an embodiment of the present invention provides a heat exchanger 200, which includes a heat exchange tube 210 and a plurality of fin structures 100 of any of the above embodiments. Specifically, a plurality of fin structures 100 set up side by side, are favorable to improving the utilization ratio in space, reinforcing heat transfer effect. In addition, as shown in fig. 4, when the plurality of fin bases 110 are spliced with each other, the front end of the first base plate 111 in one fin base 110 is matched with the rear end of the second base plate 112 in the other fin base 110, and because the outline of the front end of the first base plate 111 is matched with the shape of the tube hole and the shape of the groove 152 is matched with the shape of the smoke facing side, continuous stamping of different fin bases 110 is facilitated, and the production efficiency is improved.

Example sixteen

As shown in fig. 6, an embodiment of the present invention provides a water heating apparatus 300, which includes a water tank 310 and the heat exchanger 200 of the above embodiment. Specifically, the water tank 310 is communicated with the heat exchange pipe 210 in the heat exchanger 200, and the heat exchanger 200 exchanges heat with water flow in the water pipe, that is, heats water in the water pipe according to a preset temperature, so that the heated water can be stored in the water tank 310.

According to the fin structure, the heat exchanger and the hot water device, the bridge structure is arranged, so that on one hand, the overall strength of the fin substrate can be improved, and the copper fin substrate is not easy to deform in the manufacturing and circulating process; on the other hand, the bridge structure can enhance the turbulence intensity of the flue gas flow, destroy the boundary layer and improve the heat transfer effect; moreover, the bridge structure can also increase the heat exchange area, reduce the quantity of required fin bases and reduce the cost. The fin structure that this application provided has high efficiency, reliability height, advantage with low costs.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are used broadly and should be construed to include, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fin structure, comprising:

the fin base comprises a first base plate and a second base plate which are connected;

a plurality of first pipe holes arranged on the first substrate;

the plurality of second pipe holes are formed in the second substrate;

the bridge structures are arranged on the second substrate and protrude out of the second substrate;

the flue gas flows from the gaps of the plurality of first pipe holes to the gaps of the plurality of second pipe holes through the plurality of bridge structures.

2. The fin structure according to claim 1, further comprising:

the first flanging extends from the first pipe hole to one side of the first base plate;

a second flange extending from the second pipe hole to one side of the second base plate,

the extending direction of the first flanging is the same as that of the second flanging.

3. The fin structure according to claim 1, further comprising:

the welding rod hole is arranged on one side, close to the second pipe hole, of the first pipe hole and/or on one side, far away from the first pipe hole, of the second pipe hole.

4. The fin structure according to claim 1, wherein a side of the first base plate remote from the second base plate is contoured to fit the shape of the first tube aperture.

5. The fin structure according to claim 1, further comprising:

the hole grooves are formed in one side, far away from the second base plate, of the first base plate, and each hole groove is formed between two first pipe holes.

6. The fin structure according to claim 5, wherein the number of the hole grooves is plural, and a depth of one of the plurality of the hole grooves is larger than depths of the remaining hole grooves.

7. The fin structure according to claim 6, wherein the hole groove having a greater depth is provided in a middle portion of the first base plate.

8. The fin structure according to claim 1, further comprising:

the groove is arranged on one side, far away from the first substrate, of the second substrate, and the shape of the groove is matched with that of the outline of one side, far away from the second substrate, of the first substrate.

9. The fin structure according to claim 1, further comprising:

and the side flanging is arranged on two opposite sides of the fin base along the connection direction of the first base plate and the second base plate.

10. The fin structure according to claim 9, wherein the side-flanging specifically comprises:

the first side edges are arranged on two opposite sides of the first substrate along the connection direction;

a second side edge arranged at two opposite sides of the second substrate along the connection direction,

wherein the first side edge is connected with the second side edge.

11. The fin structure according to claim 1, further comprising:

the boss structure is arranged on the first substrate, and the flue gas flows through the boss structure and then flows to the bridge structure.

12. The fin structure according to claim 11, wherein the number of the boss structures is plural, and the size of the boss structures on both sides of the plural boss structures is smaller than the size of the rest of the boss structures.

13. The fin structure according to claim 1, wherein a projection of the bridge structure on the second substrate is rectangular, parallelogram, or trapezoidal.

14. The fin structure according to claim 1, wherein the bridge structure has a width of 2mm to 5mm.

15. The fin structure of claim 1, wherein a plurality of portions of the bridge structure are V-shaped and are disposed on the second base plate.

16. The fin structure according to claim 1, further comprising:

an opening flange arranged on the second base plate and arranged on one side of the bridge structure far away from the first base plate,

the opening of the opening flanging faces to the side far away from the first base plate.

17. The fin structure according to claim 1, wherein a plurality of the first tube holes are arranged in a first direction, a plurality of the second tube holes are arranged in the first direction, and the first tube holes and the second tube holes are arranged in a staggered manner.

18. A heat exchanger, comprising:

a heat exchange pipe;

a plurality of fin structures according to any one of claims 1 to 17, the plurality of fin structures being arranged side by side.

19. A water heating apparatus, comprising:

a water tank;

the heat exchanger of claim 18, the water tank being in communication with the heat exchange tubes in the heat exchanger.