Heat exchange fin, heat exchanger and water heater
By designing heat exchange fins with flue gas barriers in the heat exchanger of the gas water heater, the gasification noise and intra-pipe scaling problems caused by the high temperature of the heat exchange pipe near the high-temperature flue gas are solved, and the gasification noise and internal scaling problems are achieved. More even temperature distribution and better user experience.
Patent Information
- Application Number
- CN202421185909.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In existing gas water heaters, the temperature of the heat exchanger's heat exchanger's pipe wall close to the high-temperature flue gas is too high, resulting in gasification noise and abnormal scaling problems in the pipe.
A heat exchange fin is designed, and a flue gas barrier member is provided on the heat exchange fin body. In the direction of the flue gas flow, the flue gas barrier member is located on the front side of the mounting hole with the heat exchange tube. In this way, the high-temperature flue gas will directly impact the flue gas barrier and divert to the left and right sides of the heat exchange tube installation hole for heat exchange, reducing direct impact on the pipe wall of the heat exchange tube close to the burner.
By reducing the heat absorption of the pipe walls of the heat exchange tube close to the high-temperature flue gas, improving the temperature uniformity of the pipe walls in various parts of the heat exchange tube, avoiding gasification noise and abnormal scaling in the pipe, and improving the user experience.
Smart Images
Figure CN222481226U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating, in particular to a heat exchange fin, a heat exchanger and a water heater. Background Art
[0002] In a gas water heater, the burner heats the water in the heat exchanger to meet the user's demand for hot water.
[0003] In the prior art, for example, stainless steel heat exchangers, due to the relatively low thermal conductivity and high thermal inertia of stainless steel materials, easily cause heat concentration. Therefore, during use, the wall of the heat exchanger tube close to the high-temperature flue gas absorbs a large amount of heat and has a high temperature, while the temperature of other parts of the heat exchange tube is low, resulting in a large temperature difference between various parts of the heat exchange tube. The heat generated by the burner cannot be transferred to the water flow in the heat exchange tube in time, which will cause the wall temperature of the heat exchange tube close to the high-temperature flue gas to be high, which will in turn cause problems such as gasification noise of the heat exchange tube and abnormal scaling in the tube, affecting the user experience. Utility Model Content
[0004] One of the technical problems solved by the utility model is to provide a heat exchange fin, which can effectively solve the technical problems existing in the prior art that the wall of the heat exchange tube of the heat exchanger close to the high-temperature flue gas has gasification noise and abnormal scaling in the tube due to the high temperature.
[0005] The second technical problem solved by the utility model is to provide a heat exchanger which can effectively solve the technical problems in the prior art that the heat exchange tubes of the heat exchanger close to the high-temperature flue gas have gasification noise and abnormal scaling inside the tubes due to the high temperature.
[0006] The third technical problem solved by the utility model is to provide a water heater which can effectively solve the technical problems in the prior art that the heat exchange tubes of the heat exchanger close to the high-temperature flue gas have gasification noise and abnormal scaling inside the tubes due to the high temperature.
[0007] The first technical problem mentioned above is solved by the following technical solution:
[0008] Heat exchange fins, including:
[0009] Heat exchange fin body;
[0010] The heat exchange tube installation hole is arranged on the heat exchange fin body;
[0011] The smoke blocking member is arranged on the heat exchange fin body, and one of the heat exchange tube installation holes is correspondingly provided with a smoke blocking member. Along the smoke flow direction, the smoke blocking member is located at the front side of the heat exchange tube installation hole corresponding to the smoke blocking member.
[0012] Compared with the background technology, the heat exchange fins of the utility model have the following beneficial effects:
[0013] A smoke blocking member is arranged on the heat exchange fin body of the heat exchange fin, and along the flow direction of the smoke, the smoke blocking member is located at the front side of the heat exchange tube installation hole corresponding to the smoke blocking member. With such arrangement, when the smoke flows through the heat exchange fin, at least a part of the high-temperature smoke directly impacts the smoke blocking member and is diverted to the left and right sides of the heat exchange tube installation hole to exchange heat with the left and right sides of the heat exchange tube, and this part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessively high temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, resulting in gasification noise and abnormal scaling in the tube.
[0014] In one of the embodiments, the smoke blocking member includes a blocking piece arranged at an angle with the heat exchange fin body.
[0015] In one of the embodiments, a plurality of heat exchange tube installation holes are provided on the heat exchange fin body, and a notch is provided on the heat exchange fin body between two adjacent heat exchange tube installation holes, and the notch extends from the lower end edge position of the heat exchange fin body along the flue gas flow direction.
[0016] In one of the embodiments, a plurality of heat exchange tube installation holes are provided on the heat exchange fin body, and a disturbance flange is provided between two adjacent heat exchange tube installation holes on the heat exchange fin body, and the disturbance flange is provided at an angle to the heat exchange fin body.
[0017] In one of the embodiments, the disturbance flange is inclined relative to a set plane, and the set plane is perpendicular to the flue gas flow direction.
[0018] In one embodiment, there are multiple disturbance flanges, and at least two of the disturbance flanges have different inclination directions relative to the set plane.
[0019] In one of the embodiments, it is characterized in that there are multiple disturbance flanges, and along the flow direction of the smoke, the widths of the multiple disturbance flanges gradually increase; and / or
[0020] Along the flue gas flow direction, the lengths of the plurality of disturbance flanges gradually increase.
[0021] In one of the embodiments, the heat exchange fin further includes a smoke anti-detachment flange, and the smoke anti-detachment flange is arranged at one end of the heat exchange fin body away from the smoke blocking member. There are multiple heat exchange tube installation holes, and one smoke anti-detachment flange is arranged between two adjacent heat exchange tube installation holes.
[0022] The above second technical problem is solved by the following technical solution:
[0023] The heat exchanger comprises a heat exchange tube and the above-mentioned heat exchange fin, wherein the heat exchange tube is installed in the heat exchange tube installation hole of the heat exchange fin.
[0024] Compared with the background technology, the heat exchanger described in the utility model has the following beneficial effects:
[0025] A smoke blocking member is arranged on the heat exchange fin body of the heat exchange fin, and along the flow direction of the smoke, the smoke blocking member is located at the front side of the installation hole of the heat exchange tube installation position corresponding to the smoke blocking member. In this arrangement, when the smoke flows through the heat exchange fin, at least a part of the high-temperature smoke directly impacts the smoke blocking member and is diverted to the left and right sides of the installation hole of the heat exchange tube to exchange heat with the left and right sides of the heat exchange tube, and this part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessive temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, resulting in gasification noise and abnormal scaling in the tube.
[0026] The third technical problem mentioned above is solved by the following technical solution:
[0027] The water heater comprises a shell, a burner is arranged in the shell, and the heat exchanger is also arranged in the shell, and the heat exchanger is located on the upper side of the burner.
[0028] Compared with the background technology, the water heater of the utility model has the following beneficial effects:
[0029] The water heater includes the above-mentioned heat exchanger. In the heat exchange fins of the heat exchanger, a smoke blocking member is provided on the heat exchange fin body of the heat exchange fin, and along the flow direction of the smoke, the smoke blocking member is located at the front side of the installation hole of the heat exchange tube installation position corresponding to the smoke blocking member. With such arrangement, when the smoke flows through the heat exchange fins, at least a part of the high-temperature smoke directly impacts the smoke blocking member and is diverted to the left and right sides of the installation hole of the heat exchange tube, and exchanges heat with the left and right sides of the heat exchange tube. This part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessive temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, which generates gasification noise and abnormal scaling in the tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 A schematic structural diagram of a heat exchange fin provided in Embodiment 1 of the utility model from one perspective;
[0031] Figure 2 for Figure 1 The enlarged view of point A in the middle;
[0032] Figure 3 for Figure 1 The enlarged view of point B in the middle;
[0033] Figure 4 A structural schematic diagram of the heat exchange fin provided in the first embodiment of the utility model from another perspective;
[0034] Figure 5 for Figure 4 Enlarged view of the CC section;
[0035] Figure 6 for Figure 5 Enlarged view of point E in the middle;
[0036] Figure 7 for Figure 4 The enlarged view of point D in the middle;
[0037] Figure 8 A schematic diagram of the structure of the heat exchange fins provided in the second embodiment of the utility model;
[0038] Fig. 9 for Figure 8 Enlarged view of point F in the middle.
[0039] Description of labels:
[0040] 1. Heat exchange fin body; 11. Heat exchange tube installation hole; 12. Smoke blocking member; 13. Heat exchange tube fixing flange; 14. Notch; 15. Disturbance flange; 16. Smoke anti-fall flange; 161. Middle part; 162. End part. DETAILED DESCRIPTION
[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0042] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0043] In the description of the present application, unless otherwise specified, “plurality” means two or more.
[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0045] Embodiment 1
[0046] The present embodiment provides a heat exchange fin, which is applied to a heat exchanger of a gas water heater and can avoid technical problems such as prominent gasification noise of the heat exchange tube of the heat exchanger and abnormal scaling in the tube during operation of the gas water heater.
[0047] Specifically, in this embodiment, the heat exchange fins are made of stainless steel.
[0048] Specifically, see Figure 1 and Figure 2 The heat exchange fin includes a heat exchange fin body 1, a heat exchange tube installation hole 11 and a smoke blocking member 12.
[0049] The heat exchange tube installation hole 11 is arranged on the heat exchange fin body 1 .
[0050] The heat exchange tube installation hole 11 is used to install the heat exchange tube of the heat exchanger. Specifically, in this embodiment, the heat exchange tube installation hole 11 is a hole structure opened on the heat exchange fin body 1; in order to ensure the stability of the heat exchange tube installation, a heat exchange tube fixing flange 13 is provided on the heat exchange fin body 1 along the circumference of the heat exchange tube installation hole.
[0051] The smoke blocking member 12 is arranged on the heat exchange fin body 1 , and one smoke blocking member 12 is correspondingly arranged for one heat exchange tube installation hole 11 . Along the smoke flow direction, the smoke blocking member 12 is located at the front side of the heat exchange tube installation hole 11 corresponding to the smoke blocking member 12 .
[0052] The heat exchange fin provided in this embodiment is provided with a smoke blocking member 12 on the heat exchange fin body 1, and along the flow direction of the smoke, the smoke blocking member 12 is located at the front side of the heat exchange tube installation hole 11 corresponding to the smoke blocking member 12. With such a configuration, when the smoke flows through the heat exchange fin, at least a part of the high-temperature smoke directly impacts the smoke blocking member 12 and is diverted to the left and right sides of the heat exchange tube installation hole 11 to exchange heat with the left and right sides of the heat exchange tube, and this part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessively high temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, resulting in gasification noise and abnormal scaling in the tube.
[0053] Specifically, Figure 1 Taking the orientation shown as an example, the high-temperature flue gas flows from bottom to top. When the high-temperature flue gas flows to the heat exchange fins, at least a portion of the high-temperature flue gas directly impacts the flue gas blocking member 12 located below the heat exchange tube installation hole 11, so that the high-temperature flue gas impacting the flue gas blocking member 12 will not directly contact the bottom of the heat exchange tube, reducing the heat absorption at the bottom of the heat exchange tube, thereby avoiding the gasification noise and abnormal scaling in the tube caused by the excessive temperature at the bottom of the heat exchange tube, and ultimately ensuring the user experience.
[0054] In one embodiment, the smoke blocking member 12 includes a blocking piece that is arranged at an angle with the heat exchange fin body 1 .
[0055] Specifically, the smoke blocking member 12 is a blocking piece that is arranged at an angle with the heat exchange fin body 1 , and the blocking piece is integrally formed with the heat exchange fin body 1 .
[0056] Exemplarily, the smoke blocking member 12 is arranged at a right angle to the heat exchange fin body 1. Such an arrangement enables the smoke blocking member 12 to have the largest smoke impact blocking area and the best smoke impact blocking effect.
[0057] Alternatively, see Figure 2 The length of the smoke blocking member 12 is smaller than the dimension of the heat exchange tube installation hole 11 along the length direction of the smoke blocking member 12. The width of the smoke blocking member 12 is smaller than the dimension of the heat exchange tube on the heat exchange tube installation hole 11 along the width direction of the smoke blocking member 12. This arrangement prevents the smoke blocking member 12 from completely blocking the smoke and affecting the heat exchange efficiency of the heat exchange tube.
[0058] Further optionally, the width of the smoke blocking member 12 is not less than half of the dimension of the heat exchange tube on the heat exchange tube installation hole 11 along the width direction of the smoke blocking member 12 .
[0059] Specifically, the width direction and the length direction of the smoke blocking member 12 are both perpendicular to the smoke flow direction, so that the smoke blocking member 12 and the heat exchange fin body 1 are arranged at a right angle.
[0060] In one embodiment, a plurality of heat exchange tube installation holes 11 are provided on the heat exchange fin body 1. Correspondingly, a plurality of smoke blocking members 12 are provided on the heat exchange fin body 1, and the smoke blocking members 12 are provided in one-to-one correspondence with the heat exchange tube installation holes 11.
[0061] A notch 14 is provided between two adjacent heat exchange tube mounting holes 11 on the heat exchange fin body 1, and the notch 14 extends from the lower edge of the heat exchange fin body 1 in the direction of flue gas flow. In this way, when flue gas flows to the heat exchange fin, due to the notch 14, the flue gas continues to flow upward in the extending direction of the notch 14, thereby avoiding excessive contact between the flue gas and the lower end of the heat exchange fin, thereby avoiding the formation of a high temperature zone at the bottom of the heat exchange tube.
[0062] After the notch 14 is provided, the flue gas can rise faster, and thus can contact the relatively higher position of the heat exchange tube more quickly, thereby improving the temperature uniformity of the heat exchange fins and the heat exchange tube.
[0063] Optionally, along the flue gas flow direction, the extension size of the notch 14 is smaller than half of the size of the heat exchange tube installation hole 11 to avoid the notch 14 being too large and affecting the overall strength of the heat exchange fin.
[0064] In order to further improve the heat exchange efficiency, in one embodiment, a disturbance flange 15 is provided between two adjacent heat exchange tube installation holes 11 on the heat exchange fin body 1 , and the disturbance flange 15 is provided at an angle to the heat exchange fin body 1 .
[0065] Specifically, the disturbance flange 15 is located on the upper side of the notch 14 .
[0066] Optionally, the disturbance flange 15 is formed by cutting and bending the material on the heat exchange fin body 1 .
[0067] The disturbance flange 15 can disturb the airflow passing through the heat exchange fins. The disturbed airflow will overflow to both sides of the disturbance flange 15, thereby contacting the heat exchange tubes on both sides of the disturbance flange 15, reducing the energy waste of the flue gas between two adjacent heat exchange tube installation holes 11 and improving the heat exchange efficiency.
[0068] Specifically, in the present embodiment, in the portion between two adjacent heat exchange tube mounting holes 11 on the heat exchange fin body 1, the notch 14 is located on the lower side, and the disturbance flange 15 is located on the upper side. With such arrangement, the energy loss of the flue gas when flowing through the notch 14 is small. When the flue gas flows to the upper side of the portion between the two adjacent heat exchange tube mounting holes 11, the disturbance flange 15 disturbs the flue gas, and the flue gas overflows to both sides of the disturbance flange 15, thereby contacting and exchanging heat with the heat exchange tubes on both sides of the disturbance flange 15, thereby fully reducing the energy waste of the flue gas and improving the heat exchange efficiency and heat exchange uniformity.
[0069] See also Figure 3 In one embodiment, the disturbance flange 15 is inclined relative to the set plane, and the set plane is perpendicular to the flue gas flow direction; such a setting has the best disturbance effect.
[0070] Specifically, taking the actual use orientation of the product as an example, the smoke flow direction is vertically upward. The plane is set as a horizontal plane. The disturbance flange 15 is inclined relative to the horizontal direction, and its disturbance ability is better.
[0071] For example, Figure 3 Taking the orientation shown as an example, the disturbance flange 15 is in a state where one side is high and the other side is low. The low side first disturbs part of the rising airflow, causing part of the airflow to flow obliquely to the heat exchange tube of the heat exchange tube installation hole 11 adjacent to the low side for heat exchange, and the other part of the airflow will continue to flow along the lower surface of the disturbance flange 15 to the high side. After the part of the airflow flows to the edge of the high side, part of it rises, and the rest of it will flow obliquely to the heat exchange tube of the heat exchange tube installation hole 11 adjacent to the high side for heat exchange. In this way, heat concentration caused by flue gas concentration can be avoided, thereby avoiding the generation of high-temperature areas (high-temperature areas are prone to gasification noise and abnormal scaling in the tube).
[0072] Furthermore, in one of the embodiments, there are multiple disturbance flanges 15 to achieve better disturbance effect and better heat exchange uniformity.
[0073] At least two disturbance flanges 15 have different inclination directions relative to the set plane. This arrangement can make the resistance of the flue gas at different positions different, so that the flue gas is more evenly distributed in the flow of the entire heat exchange fin, preventing heat concentration caused by flue gas concentration, avoiding the generation of high temperature areas, and increasing heat exchange efficiency.
[0074] Specifically, see Figure 1 and Figure 4 , part of the disturbance flange 15 is inclined downward from left to right, and another part of the disturbance flange 15 is inclined upward from left to right.
[0075] Preferably, the inclination directions of two adjacent disturbance flanges 15 are different to improve the disturbance effect.
[0076] It can be understood that the inclination angles of the two disturbance flanges 15 inclined in the same direction can be the same or different; preferably, they are different to improve the disturbance effect.
[0077] In one embodiment, there are multiple disturbance flanges 15 , and along the flue gas flow direction, the angles between the multiple disturbance flanges 15 and the heat exchange fin body 1 gradually increase.
[0078] Specifically, see Figure 5 and Figure 6 ,exist Figure 6 In the figure, the angle α represents the angle between the disturbance flange 15 and the heat exchange fin body 1. For example, 30°>α>70°. Optionally, the size of α is 30°, 40°, 45°, 50°, 60° or 70°. Of course, in other embodiments, the size of α can also be set as needed; no excessive restrictions are made here.
[0079] Since the flue gas velocity gradually decreases along the flue gas flow direction, the angle between the multiple disturbance flanges 15 and the heat exchange fin body 1 is set to gradually increase along the flue gas flow direction. That is, at a position where the flue gas velocity is slower, the angle between the disturbance flange 15 and the heat exchange fin body 1 is larger, and the disturbance effect on the flue gas is greater, and the flue gas is fully disturbed, thereby ensuring the energy utilization rate of the flue gas.
[0080] In one embodiment, the widths of the plurality of disturbance flanges 15 gradually increase along the smoke flow direction; and / or
[0081] Along the flue gas flow direction, the lengths of the plurality of disturbance flanges 15 gradually increase.
[0082] Specifically, see Figure 6 and Figure 7 , dimension a represents the length of the disturbance flange 15 , dimension b represents the width of the disturbance flange 15 , and dimension d represents the width of the cut hole in the heat exchange fin body 1 .
[0083] A hole is cut on the heat exchange fin body 1 and the material at the cut hole is folded to form a disturbance flange 15 .
[0084] Specifically, in Figure 4 In the figure, dimension c represents the fin width between two adjacent heat exchange tube installation holes 11. The value of a is the product of the first constant and d; optionally, the first constant is 0.3-1. It should be noted that when the value of the first constant is less than 1, the disturbance flange 15 is formed by first cutting a hole on the heat exchange fin body 1, then bending it, and finally cutting off part of the material.
[0085] The value of b is the product of the second constant and c; optionally, the second constant is 0.3-0.7.
[0086] Along the direction of smoke flow, the widths of the multiple disturbance flanges 15 gradually increase; that is, the closer to the upper position, the wider the disturbance flange 15; since the smoke flow rate is slower at the upper position, when the width of the disturbance flange 15 is larger, the disturbance effect is better.
[0087] Along the flue gas flow direction, the lengths of the multiple disturbance flanges 15 gradually increase; that is, the higher the position, the longer the disturbance flange 15; since the flue gas velocity is slower at higher positions, when the disturbance flange 15 is longer, the disturbance effect is better.
[0088] Preferably, along the flue gas flow direction, the widths of the plurality of disturbance flanges 15 gradually increase, the lengths of the plurality of disturbance flanges 15 gradually increase, and the angles between the plurality of disturbance flanges 15 and the heat exchange fin body 1 gradually increase.
[0089] Of course, in other embodiments, along the flue gas flow direction, the length and width of the plurality of disturbance flanges 15 and the angle between the disturbance flanges 15 and the heat exchange fin body 1 can also be adjusted as needed during design.
[0090] Furthermore, in one of the embodiments, the heat exchange fin also includes a smoke anti-detachment flange 16, which is arranged at one end of the heat exchange fin body 1 away from the smoke blocking member 12. The number of heat exchange tube mounting holes 11 is multiple, and a smoke anti-detachment flange 16 is arranged between two adjacent heat exchange tube mounting holes 11.
[0091] Specifically, taking the actual installation hole position of the product as an example, the smoke anti-falling flange 16 is located at the upper end of the heat exchange fin, which can slow down the flow around the upper end of the heat exchange fin, thereby enhancing the top heat exchange capacity of the heat exchanger.
[0092] Due to the provision of the smoke anti-fall-off flange 16, when the smoke flows, the residence time at the upper end of the heat exchange fin is longer, the flow path is also longer, and the heat exchange capacity of the top of the heat exchanger is better.
[0093] For example, see Figure 7 In this embodiment, the smoke-proof flange 16 is roughly V-shaped, including a middle portion 161 and an end portion 162; the middle portion 161 is a concave arc structure. An end portion 162 is provided at each end of the middle portion 161.
[0094] Alternatively, see Figure 7 In this embodiment, the end portion 162 is a linear structure smoothly connected to the middle portion 161 .
[0095] In order to better gather the flue gas flowing to the upper end of the heat exchange fin onto the top of the heat exchange tube located on the heat exchange tube mounting hole 11 and reduce the flow separation phenomenon, the lower edge of the end 162 is flush with the highest point of the heat exchange tube mounting hole 11 and is arranged at an interval to ensure that the lower edge of the end 162 is flush with the top of the heat exchange tube, so that the flue gas can flush the top of the heat exchange tube and enhance the heat exchange effect.
[0096] Embodiment 2
[0097] This embodiment provides a heat exchange fin.
[0098] Figure 8 and Fig. 9 The second embodiment is shown, wherein the components identical or corresponding to the first embodiment are marked with the corresponding reference numerals of the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment are described. The difference is that the end portion 162 is an arc-shaped structure smoothly connected to the middle portion 161, and the free end of the end portion 162 is located on the upper side of the heat exchange tube installation hole 11 and extends toward the heat exchange tube installation hole 11.
[0099] That is, in this embodiment, the notch of the end 162 is arranged downward. In this way, under the guidance of the smoke anti-falling flange 16, the smoke can form an effect of flushing the top of the heat exchange tube downward, so that the heat exchange capacity of the heat exchange tube is stronger.
[0100] Embodiment 3
[0101] This embodiment provides a heat exchanger, and the heat exchanger includes a heat exchange tube.
[0102] The heat exchanger also includes the heat exchange fins of embodiment one or embodiment two, and the heat exchange tubes are installed in the heat exchange tube installation holes of the heat exchange fins.
[0103] The heat exchanger provided in this embodiment is provided with a smoke blocking member 12 on the heat exchange fin body 1 of the heat exchange fin, and along the flow direction of the smoke, the smoke blocking member 12 is located in front of the heat exchange tube installation hole 11 corresponding to the smoke blocking member 12. With such a configuration, when the smoke flows through the heat exchange fin, at least a part of the high-temperature smoke directly impacts the smoke blocking member 12 and is diverted to the left and right sides of the heat exchange tube installation hole to exchange heat with the left and right sides of the heat exchange tube, and this part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessively high temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, resulting in gasification noise and abnormal scaling in the tube.
[0104] Embodiment 4
[0105] This embodiment provides a water heater.
[0106] Specifically, the water heater is a gas water heater.
[0107] The water heater comprises a shell, a burner is arranged in the shell, and a heat exchanger of the third embodiment is also arranged in the shell, and the heat exchanger is located on the upper side of the burner.
[0108] When the water heater is working, gas and air form a mixed gas at the burner, and the mixed gas burns to produce high-temperature flue gas; the flue gas rises and flows through the heat exchanger, exchanging heat with the heat exchange tubes of the heat exchanger, thereby increasing the water temperature in the heat exchange tubes to meet the user's need for hot water.
[0109] The water heater provided in this embodiment is provided with a smoke blocking member 12 on the heat exchange fin body 1 of the heat exchange fin, and along the flow direction of the smoke, the smoke blocking member 12 is located at the front side of the heat exchange tube installation hole 11 corresponding to the smoke blocking member 12. With such a configuration, when the smoke flows through the heat exchange fin, at least a part of the high-temperature smoke directly impacts the smoke blocking member 12 and is diverted to the left and right sides of the heat exchange tube installation hole 11 to exchange heat with the left and right sides of the heat exchange tube, and this part of the high-temperature smoke will not directly impact the tube wall of the heat exchange tube close to the burner, thereby reducing the heat absorption of the tube wall of the heat exchange tube close to the high-temperature smoke, improving the temperature uniformity of the tube wall of the heat exchange tube at various locations, and avoiding the problem of excessively high temperature of the tube wall of the heat exchange tube close to the high-temperature smoke, resulting in gasification noise and abnormal scaling in the tube.
[0110] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0111] The specific contents of the above specific implementations only express several implementations of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A heat exchange fin, characterized in that: include: Heat exchange fin body (1); A heat exchange tube installation hole (11) is arranged on the heat exchange fin body (1); A smoke blocking member (12) is arranged on the heat exchange fin body (1), and one of the heat exchange tube mounting holes (11) is provided with one of the smoke blocking members (12); along the smoke flow direction, the smoke blocking member (12) is located in front of the heat exchange tube mounting hole (11) corresponding to the smoke blocking member (12).
2. The heat exchange fin according to claim 1, characterized in that: The smoke blocking member (12) comprises a blocking piece which is arranged at an angle with the heat exchange fin body (1).
3. The heat exchange fin according to claim 1, characterized in that: The heat exchange fin body (1) is provided with a plurality of heat exchange tube mounting holes (11), and a notch (14) is provided between two adjacent heat exchange tube mounting holes (11) on the heat exchange fin body (1), and the notch (14) extends from the lower end edge of the heat exchange fin body (1) along the flue gas flow direction.
4. The heat exchange fin according to claim 1, characterized in that: The heat exchange fin body (1) is provided with a plurality of heat exchange tube mounting holes (11), and a disturbance flange (15) is provided between two adjacent heat exchange tube mounting holes (11) on the heat exchange fin body (1), and the disturbance flange (15) is provided at an angle to the heat exchange fin body (1).
5. The heat exchange fin according to claim 4, characterized in that: The disturbance flange (15) is arranged obliquely relative to a set plane, and the set plane is perpendicular to the flue gas flow direction.
6. The heat exchange fin according to claim 5, characterized in that: The number of the disturbance flanges (15) is multiple, and at least two of the disturbance flanges (15) have different inclination directions relative to the set plane.
7. The heat exchange fin according to claim 4, characterized in that: The number of the disturbance flanges (15) is multiple, and along the flow direction of the smoke, the widths of the multiple disturbance flanges (15) gradually increase; and / or Along the flue gas flow direction, the lengths of the plurality of disturbance flanges (15) gradually increase.
8. The heat exchange fin according to any one of claims 1 to 7, characterized in that: The heat exchange fin further comprises a smoke anti-detachment flange (16), wherein the smoke anti-detachment flange (16) is arranged at one end of the heat exchange fin body (1) away from the smoke blocking member (12), the number of heat exchange tube mounting holes (11) is multiple, and one smoke anti-detachment flange (16) is arranged between two adjacent heat exchange tube mounting holes (11).
9. A heat exchanger, comprising a heat exchange tube, characterized in that: It also includes the heat exchange fin according to any one of claims 1 to 8, wherein the heat exchange tube is installed in the heat exchange tube installation hole (11) of the heat exchange fin.
10. A water heater comprising a housing, wherein a burner is arranged in the housing, characterized in that: The heat exchanger as claimed in claim 9 is also arranged in the shell, and the heat exchanger is located on the upper side of the burner.