Stainless steel heat exchanger and gas water heater

Abstract

The utility model discloses a stainless steel heat exchanger and a gas water heater. The stainless steel heat exchanger comprises a plurality of heat exchange pipes which are arranged side by side. The heat exchange fins are provided with first hole sites, the first hole sites are matched with the heat exchange tubes, and the heat exchange fins are arranged on the heat exchange tubes at intervals; a flanging hole is formed in the heat exchange fin between every two adjacent first hole sites; the two sets of side plate assemblies are arranged at the two ends of the heat exchange pipe correspondingly, and second hole sites and water boxes which communicate with each other are formed on the side plate assemblies; the heat exchange pipes penetrate through the second hole positions to be fixedly connected with the side plate assemblies, and the water box communicates with the two adjacent heat exchange pipes. The heat exchange tubes, the heat exchange fins and the side plate assemblies are all made of stainless steel materials. By arranging the flanging holes, the vortex intensity of high-temperature flue gas is enhanced, and the heat exchange capacity with the heat exchange tube is improved; the water box is communicated with the two adjacent heat exchange tubes, so that the water flow path is prolonged, and the heat exchange efficiency is improved; the stainless steel water tank is made of stainless steel materials, corrosion is not prone to occurring, and the risk of water leakage is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a stainless steel heat exchanger and a gas water heater. Background Art

[0002] At present, water heaters are household appliances commonly used in people's daily lives. Water heaters are divided into electric water heaters, gas water heaters, heat pump water heaters and solar water heaters. Gas water heaters, also known as gas water heaters, are gas appliances that use gas as fuel and transfer heat to cold water flowing through a heat exchanger through combustion and heating to achieve the purpose of preparing hot water. The heat exchangers of gas water heaters mostly use oxygen-free copper as the main material. Oxygen-free copper has excellent thermal conductivity, but in the long-term use process, oxygen-free copper is prone to corrosion and leakage.

[0003] The existing Chinese patent with publication number CN208269715U discloses a stainless steel heat exchange group, including at least one layer of heat exchange group, each layer of heat exchange group is provided with a plurality of evenly arranged heat absorbing sheets, a plurality of first mounting holes for mounting heat absorbing tubes are provided on the heat absorbing sheets, two adjacent heat absorbing tubes are provided with a water receiving box assembly to form a connected water path, and the heat absorbing sheets, the heat absorbing tubes and the water box assembly are all made of stainless steel.

[0004] The above heat exchange group is made of stainless steel, which is corrosion-resistant and not easy to leak. However, the heat transfer capacity of stainless steel is average, resulting in unsatisfactory heat exchange effect of the heat exchange group. In view of this, how to design a technology to improve the heat exchange effect of stainless steel heat exchangers is the technical problem to be solved by the utility model. Summary of the invention

[0005] The utility model provides a stainless steel heat exchanger and a gas water heater, which can improve the heat exchange effect of the stainless steel heat exchanger.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] In one aspect, the utility model provides a stainless steel heat exchanger, comprising:

[0008] A plurality of heat exchange tubes arranged side by side;

[0009] A plurality of heat exchange fins, each of which is provided with a first hole, the first hole being adapted to the heat exchange tube, and the plurality of heat exchange fins being arranged on the heat exchange tube at intervals; a flanged hole is arranged on the heat exchange fin between two adjacent first holes;

[0010] Two sets of side plate assemblies, the two sets of side plate assemblies are respectively arranged at two ends of the heat exchange tube, and the side plate assemblies are formed with a second hole position and a water box in communication;

[0011] Among them, the heat exchange tube passes through the second hole and is fixedly connected to the side plate assembly, and the water box connects two adjacent heat exchange tubes so that multiple heat exchange tubes are connected in series to form a water flow channel; the heat exchange tube, the heat exchange fins and the side plate assembly are all made of stainless steel.

[0012] In some embodiments of the present application, the heat exchange tube is a flat tube type.

[0013] By setting the heat exchange tube in the form of a flat tube, the surface area of ​​the flat tube is larger, which is beneficial to increase the heat transfer efficiency; at the same time, the flat tube can provide a larger flow cross-sectional area and reduce the resistance of the water flow.

[0014] In some embodiments of the present application, a first flange is provided at an edge of the first hole, and the first flange is in contact with the heat exchange tube.

[0015] By arranging the first flange at the edge of the first hole, the first flange increases the contact area between the heat exchange tube and the heat exchange fin, which facilitates the welding of the heat exchange tube and the heat exchange fin on the one hand, and improves the heat transfer between the heat exchange tube and the heat exchange fin on the other hand.

[0016] In some embodiments of the present application, a second flange is provided at the edge of the second hole, and the second flange is in contact with the heat exchange tube.

[0017] By arranging the second flange at the edge of the second hole, the second flange increases the contact area between the heat exchange tube and the side plate assembly, thereby improving the yield rate of welding the heat exchange tube and the side plate assembly.

[0018] In some embodiments of the present application, the side panel assembly includes:

[0019] The inner plate is provided with the second hole, and the second flange is arranged on the side of the inner plate facing the heat exchange tube.

[0020] By setting an inner plate, a second hole is opened on the inner plate, and the second flange of the edge of the second hole faces the heat exchange tube side, the contact area with the heat exchange tube is increased, which is convenient for welding the inner plate and the heat exchange tube and helps to ensure the yield rate.

[0021] In some embodiments of the present application, the side panel assembly further includes:

[0022] The outer plate is arranged on a side of the inner plate away from the heat exchange fins, the water box is arranged on the outer plate, and the water box and the outer plate are integrally stamped.

[0023] An outer plate is arranged on the side of the inner plate away from the heat exchange fins, a water box is arranged on the outer plate, and the water box and the outer plate are integrally stamped, thereby reducing the process of welding the water box, simplifying the processing technology, and reducing the risk of water leakage.

[0024] In some embodiments of the present application, a water inlet and a water outlet are respectively provided on the outer plates on both sides of the heat exchange tube, and the water inlet and the water outlet are both connected to the water flow channel.

[0025] By respectively arranging a water inlet and a water outlet on the outer plates on both sides of the heat exchange tube, the water inlet and the water outlet are both connected to the water flow channel, so that the stainless steel heat exchanger is conveniently connected to the water circuit.

[0026] In some embodiments of the present application, a crest portion and a trough portion are provided at the top end of the heat exchange fin, the crest portion and the trough portion are alternately arranged, and the trough portion is provided with a third flange.

[0027] By arranging crests and troughs at the top of the heat exchange fins, the crests and troughs are arranged alternately, and the troughs are provided with a third flange, the third flange can effectively block the high-temperature flue gas from flowing directly out from the middle area of ​​two adjacent heat exchange tubes, while guiding the flow, reducing the airflow velocity of the high-temperature flue gas, which is beneficial to enhancing the heat exchange effect between the high-temperature flue gas and the heat exchange fins and heat exchange tubes.

[0028] In some embodiments of the present application, fourth flanges are further provided at both ends of the heat exchange fin, and the fourth flange and the third flange are located on the same side of the heat exchange fin.

[0029] By arranging the fourth flange at both ends of the heat exchange fins, the fourth flange can reduce the outflow of high-temperature flue gas from between the heat exchange fins, prolong the contact time between the high-temperature flue gas and the heat exchange tube and the heat exchange fins, and form a guide effect on the high-temperature flue gas, which is beneficial to improving the heat exchange effect.

[0030] In a second aspect, the utility model provides a gas water heater, comprising a stainless steel heat exchanger as described in any one of the embodiments of the first aspect.

[0031] Compared with the prior art, the advantages and positive effects of the utility model are as follows: by setting a plurality of heat exchange tubes, a plurality of heat exchange fins and two groups of side plate assemblies arranged side by side, the heat exchange tube passes through the heat exchange fins, and the plurality of heat exchange fins are arranged on the heat exchange tube at intervals, and the heat exchange fins between two adjacent first hole positions are provided with flanged holes, and the flanged holes can enhance the eddy flow intensity of the high-temperature flue gas flowing through the heat exchange tube, thereby improving the heat exchange capacity between the high-temperature flue gas and the heat exchange tube; by respectively providing side plate assemblies at both ends of the heat exchange tube, corresponding positions of the side plate assemblies are respectively formed with interconnected second hole positions and water boxes, the heat exchange tube passes through the second hole position and is fixed on the side plate assembly, and the water box is connected to two adjacent heat exchange tubes, so that the plurality of heat exchange tubes are connected in series to form a water flow channel, thereby extending the water flow path, which is beneficial for the water in the heat exchange tube to fully absorb heat, thereby improving the heat exchange effect of the heat exchanger;

[0032] The heat exchange tubes, heat exchange fins and side plate components are all made of stainless steel, which is not prone to corrosion, which helps to reduce the risk of water leakage and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A structural schematic diagram of an embodiment of a stainless steel heat exchanger provided by the utility model;

[0035] Figure 2 An exploded view of an embodiment of a stainless steel heat exchanger provided by the utility model;

[0036] Figure 3 A schematic structural diagram of an embodiment of a heat exchange tube provided by the utility model;

[0037] Figure 4 A schematic structural diagram of an embodiment of a heat exchange fin provided by the utility model;

[0038] Figure 5 A schematic structural diagram of an embodiment of an inner side plate provided by the utility model;

[0039] Figure 6 A schematic structural diagram of an embodiment of an outer side plate provided by the utility model;

[0040] Figure 7 A structural schematic diagram of another embodiment of a stainless steel heat exchanger provided by the utility model;

[0041] Figure 8 for Figure 7 Cross-section along AA direction.

[0042] Description of reference numerals:

[0043] Heat exchange tube 1;

[0044] Heat exchange fin 2, flange hole 21, first flange 22, wave crest portion 23, wave trough portion 24, third flange 241, fourth flange 25;

[0045] Side plate assembly 3, second hole position 31, water box 32, second flange 33, inner plate 34, outer plate 35, water inlet 36, water outlet 37;

[0046] Water inlet pipe 4;

[0047] Water outlet pipe 5;

[0048] Bypass pipe 6. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0054] A gas water heater is a water heater that uses gas as the main energy material and transfers the high-temperature heat generated by gas combustion to cold water flowing through a heat exchanger to prepare hot water.

[0055] A gas water heater generally comprises a shell, and components such as a burner, a heat exchanger, a fan and a fan cover arranged in the shell.

[0056] The gas is transported to the burner and ignited by an ignition device, so that the burner burns the transported gas to generate heat.

[0057] A heat exchange tube is arranged in the heat exchanger, one end of the heat exchange tube is connected to the water supply pipeline, and the other end of the heat exchange tube is connected to a shower head or a faucet.

[0058] The heat generated by the burner burning gas is used to heat the heat exchange tubes, so that the water temperature in the heat exchange tubes is increased to form hot water.

[0059] When the gas water heater is working, cold water provided by the water supply pipeline flows into the heat exchange tube, and then is heated into hot water by the heating source generated by the burner, and then flows out from the shower or faucet through the hot water valve for user use.

[0060] At the same time, when the gas water heater is working, the fan is powered on and runs at the same time. Under the action of the fan, the smoke generated by the burner is discharged to the outside.

[0061] In one aspect, combining Figures 1 to 8 As shown, an embodiment of the present disclosure provides a stainless steel heat exchanger, which includes a plurality of heat exchange tubes 1 arranged side by side, a plurality of heat exchange fins 2 and two groups of side plate assemblies 3.

[0062] Each heat exchange fin 2 is provided with a first hole position matching the heat exchange tube 1 for the heat exchange tube 1 to pass through, and a plurality of heat exchange fins 2 are arranged on the heat exchange tube 1 at intervals; a flange hole 21 is provided on the heat exchange fin 2 between two adjacent first holes;

[0063] Combination Figure 2 As shown, two sets of side plate assemblies 3 are respectively arranged at both ends of the heat exchange tube 1, and a second hole 31 and a water box 32 are formed on the side plate assembly 3;

[0064] Among them, the heat exchange tube 1 passes through the second hole 31 and is fixedly connected to the side plate assembly 3, and the water box 32 connects two adjacent heat exchange tubes 1 so that multiple heat exchange tubes 1 are connected in series to form a water flow channel; the heat exchange tube 1, the heat exchange fin 2 and the side plate assembly 3 are all made of stainless steel.

[0065] Specifically, by setting a plurality of heat exchange tubes 1 arranged side by side, a plurality of heat exchange fins 2 and two groups of side plate assemblies 3, a first hole position is provided on the heat exchange fin 2, the first hole position is adapted to the heat exchange tube 1, the heat exchange tube 1 passes through the heat exchange fin 2, and a plurality of heat exchange fins 2 are arranged at intervals on the heat exchange tube 1, and a flange hole 21 is provided on the heat exchange fin 2 between two adjacent first holes, and the flange hole 21 can enhance the eddy flow intensity of the high-temperature flue gas flowing through the heat exchange tube 1, thereby improving the heat exchange capacity between the high-temperature flue gas and the heat exchange tube 1; by respectively setting side plate assemblies 3 at both ends of the heat exchange tube 1, a second hole position 31 and a water box 32 are formed on the side plate assembly 3, the heat exchange tube 1 is fixed on the side plate assembly 3 through the second hole position 31, and the water box 32 is connected to two adjacent heat exchange tubes 1, so that the plurality of heat exchange tubes 1 are connected in series to form a water flow channel, thereby extending the water flow path, which is beneficial for the water in the heat exchange tube 1 to fully absorb heat and improve the heat exchange efficiency of the heat exchanger;

[0066] At the same time, the heat exchange tubes 1, the heat exchange fins 2 and the side plate components 3 are all made of stainless steel materials, which are not prone to corrosion and are conducive to reducing the risk of water leakage.

[0067] Specifically, by connecting the heat exchange tubes 1 arranged side by side in series through the water box 32 to form a water flow channel, the water flow path is extended, so that the water flow can better absorb the heat in the high-temperature flue gas. At the same time, the surface area of ​​the heat exchange fins 2 is large. By setting the heat exchange fins 2, the contact area with the high-temperature flue gas is increased, thereby improving the heat exchange effect of the stainless steel heat exchanger.

[0068] Specifically, the flanged hole 21 is a circular flanged hole, is located in the middle of two adjacent heat exchange tubes 1 , and the size of the flanged hole 21 can be adjusted according to the gap size of the heat exchange tubes 1 .

[0069] For example, when the gap between two adjacent heat exchange tubes 1 is 6.6 mm, the outer diameter of the flange hole is 3.6 mm.

[0070] Of course, the number of the flanging holes 21 can be set according to actual conditions.

[0071] Combination Figure 3 As shown, in some embodiments of the present application, the heat exchange tube 1 is a flat tube type.

[0072] Specifically, by setting the heat exchange tube 1 in the form of a flat tube, the surface area of ​​the flat tube is larger, which is conducive to increasing the heat transfer efficiency; at the same time, the flat tube can provide a larger flow cross-sectional area, reduce the resistance to the water flow, and make the water flow smoother;

[0073] At the same time, the heat exchange tubes 1 are arranged in a flat tube form, so that the overall structure of the heat exchange tubes 1 when arranged is relatively compact, which is beneficial to reducing the occupied space of the stainless steel heat exchanger.

[0074] In other embodiments of the present application, the heat exchange tube 1 is an elliptical flat tube.

[0075] It can be understood that the form of the heat exchange tube 1 includes but is not limited to an elliptical flat tube, and other types of flat tubes are also within the protection scope of the present application.

[0076] Combination Figure 4 As shown, in some embodiments of the present application, a first flange 22 is provided at the edge of the first hole, and the first flange 22 is in contact with the heat exchange tube 1 .

[0077] Specifically, by setting the first flange 22 on the edge of the first hole, the first flange 22 is in contact with the heat exchange tube 1, and the first flange 22 expands the contact area between the heat exchange tube 1 and the heat exchange fin 2. On the one hand, it is convenient to install and weld the heat exchange tube 1 and the heat exchange fin 2, and on the other hand, it improves the heat transfer between the heat exchange tube 1 and the heat exchange fin 2.

[0078] Specifically, the flanged portions of the first flange 22 and the flanged hole 21 are located on the same side of the heat exchange fin 2 .

[0079] In some embodiments of the present application, a second flange 33 is provided on the edge of the second hole 31 , and the second flange 33 is in contact with the heat exchange tube 1 .

[0080] Specifically, by setting a second flange 33 on the edge of the second hole 31, the second flange 33 is in contact with the heat exchange tube 1, and the second flange 33 increases the contact area between the heat exchange tube 1 and the side plate assembly 3, thereby improving the sealing of the heat exchange tube 1 and the side plate assembly 3; at the same time, it facilitates the installation and matching of the heat exchange tube 1 and the side plate assembly 3.

[0081] In order to improve the sealing performance between the heat exchange tube 1 and the side plate assembly, a sealing gasket may be provided between the heat exchange tube 1 and the second hole 31 and / or the second flange 33 .

[0082] The heat exchange tube 1 and the side plate assembly can be fixedly connected by welding. The second flange 33 is provided to help ensure the yield rate of welding between the heat exchange tube 1 and the side plate assembly.

[0083] Combination Figure 2 and Figure 5 As shown, in some embodiments of the present application, the side panel assembly 3 includes an inner side panel 34 .

[0084] A second hole 31 is formed on the inner plate 34 , and a second flange 33 is disposed on the side of the inner plate 34 facing the heat exchange tube 1 .

[0085] Specifically, by setting an inner plate 34, a second hole 31 is opened on the inner plate 34, and the second flange 33 is set on the side of the inner plate 34 facing the heat exchange tube 1, the contact area with the heat exchange tube 1 is increased, which facilitates the welding of the inner plate 34 and the heat exchange tube 1 and helps to ensure the yield rate.

[0086] In some other embodiments of the present application, first mounting holes are provided at both ends of the inner plate 34 .

[0087] Specifically, by providing a first mounting hole on the inner plate 34 , it is convenient to connect the inner plate 34 with the upper fan module and the lower combustion chamber module.

[0088] Combination Figure 2 and Figure 6 As shown, in some embodiments of the present application, the side panel assembly 3 further includes an outer side panel 35 .

[0089] The outer plate 35 is arranged on the side of the inner plate 34 away from the heat exchange fins 2 . A water box 32 is arranged on the outer plate 35 . The water box 32 and the outer plate 35 are integrally formed by stamping.

[0090] Specifically, an outer plate 35 is provided on the side of the inner plate 34 away from the heat exchange fin 2, and a water box 32 is provided on the outer plate 35. The water box 32 and the outer plate 35 are integrally stamped, which reduces the process of welding the water box 32, simplifies the processing technology, and reduces the risk of water leakage.

[0091] At the same time, by adopting a split structure of the outer side plate 35 and the inner side plate 34 for the side plate assembly 3, processing, installation and subsequent maintenance are facilitated.

[0092] In some embodiments of the present application, a second mounting hole is provided on the outer plate 35 at a position corresponding to the first mounting hole, so as to facilitate the fastening connection between the outer plate 35 and the inner plate 34. At the same time, the outer plate 35 and the inner plate 34 are conveniently connected to the upper fan module and the lower combustion chamber module.

[0093] Combination Figure 7 As shown, in some embodiments of the present application, the outer plate 35 is embedded in the outer wall surface of the inner plate 34 .

[0094] In some embodiments of the present application, the outer plates 35 on both sides of the heat exchange tube 1 are respectively provided with a water inlet 36 and a water outlet 37, and the water inlet 36 and the water outlet 37 are both connected to the water flow channel. Figure 8 As shown, the arrow in the figure indicates the flow direction of water in the heat exchange tube 1.

[0095] Specifically, water inlets 36 and water outlets 37 are respectively provided on the outer plates 35 on both sides of the heat exchange tube 1, and the water inlets 36 and water outlets 37 are both connected to the water flow channel, so that the stainless steel heat exchanger and the connecting water channel can exchange heat easily.

[0096] Specifically, the water outlet 37 is connected to the water outlet pipe 5 , and the water inlet 36 is connected to the water inlet pipe 4 .

[0097] Specifically, the water outlet pipe 5 is also connected to a bypass pipe 6, which can avoid the problem of excessive temperature rise when the water supply is cut off.

[0098] Combination Figure 4 As shown, in some embodiments of the present application, a crest portion 23 and a trough portion 24 are provided at the top of the heat exchange fin 2 , the crest portion 23 and the trough portion 24 are alternately arranged, and the trough portion 24 is provided with a third flange 241 .

[0099] Specifically, by arranging a peak portion 23 and a trough portion 24 at the top of the heat exchange fin 2, the peak portion 23 and the trough portion 24 are alternately arranged, and the trough portion 24 is provided with a third flange 241. As shown in FIG4, the direction indicated by the arrow in the figure is the flow direction of the flue gas between the heat exchange fins 2. The third flange 241 can effectively block the high-temperature flue gas from flowing directly from the middle area of ​​two adjacent heat exchange tubes 1. The third flange 241 reduces the airflow velocity of the high-temperature flue gas while guiding the flow, which is beneficial to enhancing the heat exchange effect between the high-temperature flue gas and the heat exchange fins 2 and the heat exchange tubes 1.

[0100] Exemplarily, the third flange 241 is V-shaped. The width of the third flange 241 can be set according to actual needs.

[0101] Specifically, the third flange 241 is perpendicular to the surface where the heat exchange fin 2 is located.

[0102] In some embodiments of the present application, fourth flanges 25 are further provided at both ends of the heat exchange fin 2 , and the fourth flange 25 and the third flange 241 are located on the same side of the heat exchange fin 2 .

[0103] Specifically, by arranging the fourth flange 25 at both ends of the heat exchange fin 2, the fourth flange 25 and the third flange 241 are located on the same side of the heat exchange fin 2, and the fourth flange 25 and the third flange 241 enclose a flue gas flow passage from bottom to top. The high-temperature flue gas enters from the lower end of the heat exchange fin 2 and finally flows out from the crest portion 23. This can reduce the outflow of the high-temperature flue gas from the side of the heat exchange fin 2, extend the contact time of the high-temperature flue gas with the heat exchange tube 1 and the heat exchange fin 2, and form a guide effect on the high-temperature flue gas, which is beneficial to improving the heat exchange effect.

[0104] In a second aspect, the utility model provides a gas water heater, comprising a stainless steel heat exchanger as in any one of the embodiments of the first aspect. Since the stainless steel heat exchanger as in any one of the embodiments of the first aspect is included, all the beneficial effects thereof are obtained, which will not be described in detail here.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A stainless steel heat exchanger, characterized in that: include: A plurality of heat exchange tubes arranged side by side; A plurality of heat exchange fins, each of which is provided with a first hole, the first hole being adapted to the heat exchange tube, and the plurality of heat exchange fins being arranged on the heat exchange tube at intervals; a flanged hole is arranged on the heat exchange fin between two adjacent first holes; Two sets of side plate assemblies, the two sets of side plate assemblies are respectively arranged at two ends of the heat exchange tube, and the side plate assemblies are formed with a second hole position and a water box in communication; Among them, the heat exchange tube passes through the second hole and is fixedly connected to the side plate assembly, and the water box connects two adjacent heat exchange tubes so that multiple heat exchange tubes are connected in series to form a water flow channel; the heat exchange tube, the heat exchange fins and the side plate assembly are all made of stainless steel.

2. The stainless steel heat exchanger according to claim 1, characterized in that: The heat exchange tube is a flat tube type.

3. The stainless steel heat exchanger according to claim 1, characterized in that: A first flange is provided at the edge of the first hole, and the first flange is in contact with the heat exchange tube.

4. The stainless steel heat exchanger according to claim 1, characterized in that: The edge of the second hole is provided with a second flange, and the second flange is in contact with the heat exchange tube.

5. The stainless steel heat exchanger according to claim 4, characterized in that: The side panel assembly comprises: The inner plate is provided with the second hole, and the second flange is arranged on the side of the inner plate facing the heat exchange tube.

6. The stainless steel heat exchanger according to claim 5, characterized in that: The side panel assembly further comprises: The outer plate is arranged on a side of the inner plate away from the heat exchange fins, the water box is arranged on the outer plate, and the water box and the outer plate are integrally stamped.

7. The stainless steel heat exchanger according to claim 6, characterized in that: A water inlet and a water outlet are respectively provided on the outer plates at both sides of the heat exchange tube, and the water inlet and the water outlet are both connected to the water flow channel.

8. The stainless steel heat exchanger according to claim 1, characterized in that: The top end of the heat exchange fin is provided with a crest portion and a trough portion, the crest portion and the trough portion are arranged alternately, and the trough portion is provided with a third flange.

9. The stainless steel heat exchanger according to claim 8, characterized in that: The two ends of the heat exchange fin are further provided with fourth flanges, and the fourth flange and the third flange are located on the same side of the heat exchange fin.

10. A gas water heater, characterized in that: Comprising a stainless steel heat exchanger as claimed in any one of claims 1 to 9.

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