Heat exchanger fin, heat exchanger and water heater
By designing the heat exchanger wings with alternating and setting the protruding part and the gap, the problem of unstable connection of the heat exchanger's wings and the heat exchanging tube is solved, and a stronger connection intensity and better heat exchange effect are achieved.
Patent Information
- Application Number
- CN202323480968.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In existing gas water heaters, the connection between the heat exchanger fins and the heat exchange pipe is unstable, which affects the heat exchange effect and performance of the water heater.
Design a heat exchanger wing piece, the substrate is opened on the substrate for installing the heat exchanging pipes, the front side of the heat exchanges to form the first edge, and the first edge of the edge of the edge is alternating along the itself. The height of the protruding part is greater than the height of the gap. Through this structure, the solder can smoothly flow to the contact surface between the heat exchanges and the substrate, and achieve a stable connection.
Through the multi -point connection and the liquidity design of the solder, the connection intensity and stability between the thermal pipe and the thermal wing tablet is improved, and the heat exchange effect and overall performance of the water heater are enhanced.
Smart Images
Figure CN222418720U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of heat exchangers, and in particular to a heat exchanger fin, a heat exchanger and a water heater. Background Art
[0002] Existing gas water heaters usually use finned heat exchangers for heat exchange, and the heat exchanger fins and heat exchange tubes are connected to each other to achieve the heat exchange effect.
[0003] However, in the current water heater structure, the connection between the heat exchanger fins and the heat exchange tubes is not stable, which affects the heat exchange effect of the water heater and thus affects the performance of the water heater. Utility Model Content
[0004] Based on this, it is necessary to provide a heat exchanger fin, a heat exchanger and a water heater to address the problem of unstable connection between the current heat exchanger fins and heat exchange tubes.
[0005] In a first aspect, the present application provides a heat exchanger fin, the heat exchanger fin comprising a base plate, a heat exchange tube hole for installing a heat exchange tube is formed on the base plate, a first flange intersecting with the base plate is formed on the circumference of the heat exchange tube hole, and the first flange has protrusions and notches alternately arranged along its circumference;
[0006] Wherein, along a direction perpendicular to the substrate, the height of the protruding portion is greater than the height of the notch portion.
[0007] With the above structure, a protrusion and a notch are provided at the first flange, so that, on the one hand, when the heat exchange tube is welded to the substrate, a plurality of protrusions arranged at intervals can form a multi-point connection with the heat exchange tube, thereby improving the connection strength. On the other hand, when solder is filled between the heat exchange tube and the hole wall of the heat exchange tube hole, the solder can smoothly flow through the notch to the gap between the heat exchange tube and the hole wall of the heat exchange tube hole or to the gap between the heat exchange tube and the first flange, thereby achieving a stable connection between the heat exchange tube and the heat exchanger fin.
[0008] According to one or more embodiments, the number of the protrusions and the number of the notches are 2 to 6 respectively.
[0009] According to one or more embodiments, the number of the protruding portions and the number of the notched portions are 4 respectively.
[0010] According to one or more embodiments, the length of each of the protrusions in the circumferential direction of the heat exchange tube hole gradually decreases from one end connected to the substrate to the other end away from the substrate.
[0011] According to one or more embodiments, the heat exchange tube holes include a plurality of holes, and each of the heat exchange tube holes is arranged on the substrate at intervals along a preset direction.
[0012] According to one or more embodiments, the diameter of the heat exchange tube hole is D, and the distance between the centers of any two adjacent heat exchange tube holes is d, wherein d≥2D.
[0013] According to one or more embodiments, the substrate has an upper edge and a lower edge that are relatively arranged, the upper edge has a first recessed portion, and the lower edge has a convex portion arranged corresponding to the first recessed portion, and the first recessed portion has the same shape or curvature as the convex portion.
[0014] According to one or more embodiments, the upper edge further has a second recess, and the second recess is arranged alternately with the first recess;
[0015] Second flanges intersecting with the substrate are formed on both side edges of the substrate adjacent to the upper edge and the lower edge and the second concave portion.
[0016] According to one or more embodiments, a flow guide hole is further provided on the substrate, and the flow guide hole is used to introduce a connecting medium between the heat exchange tube and the substrate.
[0017] According to one or more embodiments, each of the heat exchange tube holes is arranged corresponding to at least one of the guide holes, and the guide holes are arranged tangentially to the corresponding heat exchange tube holes.
[0018] According to one or more embodiments, the guide holes are arranged corresponding to the notches on the corresponding heat exchange tube holes.
[0019] In a second aspect, the present application also provides a heat exchanger, comprising:
[0020] A heat exchanger fin as described above; and
[0021] A heat exchange tube is inserted into the heat exchange tube hole of the heat exchanger fin.
[0022] In a third aspect, the present application also provides a water heater, comprising the heat exchanger as described above.
[0023] In the above-mentioned heat exchanger fin, heat exchanger and water heater, when the heat exchange tube is installed into the heat exchange tube hole and the heat exchange tube and the heat exchanger fin are stably connected through a connecting medium such as solder, the connecting medium can smoothly flow into the contact surface between the heat exchange tube hole and the heat exchange tube through the notch between two adjacent protrusions on the first flange, thereby improving the connection stability between the heat exchange tube and the heat exchanger fin. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] FIG. 1 is a schematic diagram of the overall structure of a heat exchanger fin according to one or more embodiments.
[0025] FIG. 2 is a schematic diagram of a partial structure of a heat exchanger fin according to one or more embodiments.
[0026] FIG. 3 is a schematic structural diagram of a heat exchanger according to one or more embodiments.
[0027] Explanation of the reference numerals: 100, heat exchanger; 10, heat exchanger fin; 20, heat exchange tube; 11, substrate; 12, heat exchange tube hole; 13, first flange; 14, second flange; 15, guide hole; 111, upper edge; 112, lower edge; 113, first recess; 114, protrusion; 115, second recess; 131, protrusion; 132, notch; a, preset direction; b, first direction. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation on the present application.
[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0034] Referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a heat exchanger fin 10, which includes a base plate 11, a heat exchange tube hole 12 for installing a heat exchange tube 20 is formed on the base plate 11, and a first flange 13 intersecting with the base plate 11 is formed on the circumference of the heat exchange tube hole 12, and the first flange 13 has protrusions 131 and notches 132 alternately arranged along its circumference. In the direction perpendicular to the base plate 11, the height of the protrusion 131 is greater than the height of the notch 132.
[0035] It should be noted that the heat exchanger fin 10 provided in the embodiment of the present application can be applied to gas water heaters. Of course, it can also be applied to other electrical structures that use a single-layer fin structure for heat exchange, which will not be elaborated here.
[0036] The direction perpendicular to the substrate 11 is specifically the first direction b in FIG. 1 .
[0037] The heat exchanger fin 10 includes a substrate 11, on which a heat exchange tube hole 12 is opened. The heat exchange tube 20 is inserted into the heat exchange tube hole 12, and then solder or other connecting media is filled between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 to connect the heat exchange tube 20 to the hole wall of the heat exchange tube hole 12, thereby realizing the connection between the heat exchange tube 20 and the substrate 11.
[0038] A first flange 13 perpendicular to the substrate 11 is formed on the circumferential side of the heat exchange tube hole 12, and the first flange 13 has protrusions 131 and notches 132 arranged alternately. When the heat exchange tube 20 and the substrate 11 are welded by solder, the protrusion 131 can cooperate with the heat exchange tube 20 for welding, thereby increasing the connection area between the heat exchange tube 20 and the substrate 11 and improving the connection stability. In addition, the first flange 13 can also increase the contact heat exchange area between the heat exchanger fin 10 and the heat exchange tube 20, thereby enhancing the heat exchange effect.
[0039] Furthermore, the number of protrusions 131 and notches 132 corresponds one to one, and the number of protrusions 131 and notches 132 is set to at least two respectively. Thus, on the one hand, when the heat exchange tube 20 is welded to the substrate 11, the plurality of protrusions 131 arranged at intervals can form a multi-point connection with the heat exchange tube 20, thereby improving the connection strength. On the other hand, when solder is filled between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12, the solder can smoothly flow through the notches 132 to the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 or to the gap between the heat exchange tube 20 and the first flange 13, thereby achieving a stable connection between the heat exchange tube 20 and the heat exchanger fin 10.
[0040] In some embodiments, the number of the protrusions 131 and the number of the notches 132 are 2 to 6 respectively.
[0041] Specifically, the number of the protrusions 131 is equal to the number of the notch portions 132 .
[0042] If the number of notches 13 is small, the solder will not flow sufficiently between the heat exchange tube 20 and the substrate 11, and a good welding effect cannot be achieved. If the number of notches 13 is too large, the contact area between the first flange 13 and the heat exchange tube 20 will be reduced, so that the heat exchange tube 20 and the first flange 13 cannot be fully contacted, affecting the heat exchange area and thus the heat exchange effect.
[0043] Based on this, the number of the protrusions 131 and the notch 132 is set to 2-6 respectively. On the one hand, it ensures that a sufficient contact area can be formed between the first flange 13 and the heat exchange tube 20 to improve the heat exchange effect. On the other hand, the solder can smoothly flow into the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and the gap between the heat exchange tube 20 and the first flange 13 through the notch 132, thereby improving the welding stability.
[0044] As a preferred embodiment, the number of the protrusions 131 and the notch 132 is 4. The four protrusions 131 and the notch 132 are arranged alternately in sequence. When solder is filled between the heat exchange tube 20 and the substrate 11, the solder can flow into the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and the heat exchange tube 20 and the first flange 13 from different directions through the four notches 132, so that the heat exchange tube 20 and the substrate 11 are welded more stably.
[0045] In some embodiments, the length of each protrusion 131 in the circumferential direction of the heat exchange tube hole 12 gradually decreases from one end connected to the base plate 11 to the other end away from the base plate 11 .
[0046] Specifically, each protrusion 131 is extended along the circumference of the heat exchange tube hole 12, that is, each protrusion 131 is configured as an arc-shaped flange, and the length of each protrusion 131 in the circumferential direction of the heat exchange tube hole 12 is the arc length of each arc-shaped flange.
[0047] Each protrusion 131 is connected to the substrate 11 along one end perpendicular to the arc length direction thereof, and the other end is extended in a direction away from the substrate 11 .
[0048] The arc length of each protrusion 131 gradually decreases from one end connected to the substrate 11 to the other end, that is, the arc length of one end of each protrusion 131 connected to the substrate 11 is greater than the arc length of the other end away from the substrate 11. Therefore, the notch 132 between each two adjacent protrusions 131 is formed as a trapezoidal notch, which can better guide the solder from the substrate 11 to the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and between the heat exchange tube 20 and the first flange 13.
[0049] In some embodiments, the heat exchange tube holes 12 include a plurality of heat exchange tube holes 12 , and each heat exchange tube hole 12 is arranged on the substrate 11 at intervals along a preset direction a.
[0050] It should be noted that the preset direction a may be the length direction or width direction of the substrate 11, or may be other directions intersecting the length direction of the substrate 11. For ease of understanding, this embodiment takes the length direction of the substrate 11 (direction a in FIG. 1 ) as an example for description.
[0051] Each heat exchange tube hole 12 can realize the installation of one heat exchange tube 20 , so the plurality of heat exchange tube holes 12 can simultaneously integrate the plurality of heat exchange tubes 20 on the substrate 11 .
[0052] Furthermore, each heat exchange tube hole 12 is arranged at intervals along a preset direction a, that is, each heat exchange tube hole 12 is formed in a row on the substrate 11. Compared with the structure of multiple rows of heat exchange tube holes 12, on the one hand, the volume and weight of the heat exchanger fin 10 can be effectively reduced, and on the other hand, good heat exchange efficiency can be achieved.
[0053] In some embodiments, the diameter of the heat exchange tube hole 12 is D, and the distance between the centers of any two adjacent heat exchange tube holes 12 is d, where d≥2D. Thus, the heat exchange tube 20 can be installed into each heat exchange tube hole 12 more smoothly.
[0054] In some embodiments, the substrate 11 has an upper edge 111 and a lower edge 112 that are oppositely disposed, the upper edge 111 has a first recess 113, and the lower edge 112 has a protrusion 114 disposed corresponding to the first recess 113, and the first recess 113 and the protrusion 114 have the same shape or the same curvature.
[0055] Specifically, the upper edge 111 and the lower edge 112 are both configured to be wavy, wherein the first concave portion 113 is configured as an arc-shaped concave portion, the convex portion 114 is configured as an arc-shaped convex portion, and the first concave portion 113 and the convex portion 114 have the same shape or the same curvature.
[0056] In some embodiments, the upper edge 111 further has second recesses 115, which are arranged alternately with the first recesses 113. The second flanges 14 intersecting with the substrate 11 are formed on both sides of the substrate 11 adjacent to the upper edge 111 and the lower edge 112 and the second recesses 115.
[0057] Specifically, the substrate 11 is enclosed by an upper edge 111, a lower edge 112, and two side edges respectively adjacent to the upper edge 111 and the lower edge 112 to form a rectangular structure. The upper edge 11 also has a second recess 115 alternately arranged with the first recess 113, and the second recess 115 is arranged corresponding to the gap position between each two adjacent heat exchange tube holes 12.
[0058] Second flanges 14 perpendicular to the substrate 11 are formed on both side edges of the substrate 11 and the second recess 115 .
[0059] In some embodiments, a flow guide hole 15 is further provided on the substrate 11 , and the flow guide hole 15 is used to introduce a connecting medium between the heat exchange tube 20 and the substrate 11 .
[0060] Specifically, when the heat exchange tube 20 and the substrate 11 are connected by welding, the connecting medium may be solder. The solder is filled from the flow guide hole 15 to between the heat exchange tube 20 and the substrate 11, so that the solder can smoothly flow to the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and the gap between the heat exchange tube 20 and the first flange 13, thereby achieving a stable connection between the heat exchange tube 20 and the substrate 11.
[0061] In some embodiments, each heat exchange tube hole 12 is disposed corresponding to at least one flow guide hole 15 , and the flow guide hole 15 is disposed tangentially to the corresponding heat exchange tube hole 12 .
[0062] Specifically, at least one guide hole 15 is correspondingly arranged on the circumferential side of each heat exchange tube hole 12. By filling solder into the guide hole 15, the solder can flow smoothly into the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and between the heat exchange tube 20 and the first flange 13.
[0063] Furthermore, the guide hole 15 is tangent to the corresponding heat exchange tube hole 12, that is, the edge of the guide hole 15 is connected to the edge of the corresponding heat exchange tube hole 12. Therefore, after the solder melts in the guide hole 15, it can flow to the heat exchange tube hole 12 more quickly and smoothly, so that the heat exchange tube 20 is stably arranged in the heat exchange tube hole 12.
[0064] In some embodiments, the guide holes 15 are arranged corresponding to the notch portions 132 on the corresponding heat exchange tube holes 12 .
[0065] Specifically, the guide hole 15 is set at the position of the notch 132 on the heat exchange tube hole 12, so that the solder in the guide hole 15 can smoothly flow into the heat exchange tube hole 12 through the notch 132, thereby entering the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 and between the heat exchange tube 20 and the first flange 13.
[0066] As shown in FIG. 3 , based on the same concept as the above-mentioned heat exchanger fin 10 , the present application also provides a heat exchanger 100 , including the above-mentioned heat exchanger fin 10 and a heat exchange tube 20 , wherein the heat exchange tube 20 is inserted into the heat exchange tube hole 12 of the heat exchanger fin 10 .
[0067] Specifically, the heat exchanger 100 may include a plurality of heat exchanger fins 10 and a plurality of heat exchange tubes 20 , and the heat exchange tubes 20 are installed in the heat exchange tube holes 12 on the heat exchanger fins 10 in a one-to-one correspondence.
[0068] Based on the same concept as the above-mentioned heat exchanger 100 , the present application also provides a water heater, including the above-mentioned heat exchanger 100 .
[0069] Specifically, a heat exchanger 100 is installed inside the water heater, and the heat exchanger 100 has the above-mentioned heat exchanger fins 10 .
[0070] According to one or more embodiments, a plurality of heat exchanger fins 10 are first installed in the heat exchanger 100, and a plurality of heat exchange tubes 20 are inserted into each heat exchange tube hole 12 on the heat exchanger fin 10 in a one-to-one correspondence. Solder is filled into the guide hole 15, and the solder melted at the guide hole 15 can directly flow into the gap between the heat exchange tube 20 and the hole wall of the heat exchange tube hole 12 through the notch portion 132 tangent to the guide hole 15, or flow into the gap between the heat exchange tube 20 and the first flange 13, thereby achieving a stable connection between the heat exchange tube 20 and the heat exchange fin 10.
[0071] In addition, since the protrusions 131 and the notches 132 are alternately arranged in the circumferential direction of the heat exchange tube hole 12, and the guide holes 15 are arranged tangentially to the notches 132, a capillary action is generated between the contact surfaces of the heat exchange tube 20 and the substrate 11, thereby smoothly attracting the solder to be more evenly distributed between the contact surfaces of the heat exchange tube 20 and the substrate 11, thereby improving the welding effect.
[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments 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.
[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A heat exchanger fin, characterized in that: The heat exchanger fin (10) comprises a base plate (11), a heat exchange tube hole (12) for mounting a heat exchange tube (20) is formed on the base plate (11), a first flange (13) intersecting with the base plate (11) is formed on the circumferential side of the heat exchange tube hole (12), and the first flange (13) has protrusions (131) and notches (132) alternately arranged along its circumference; Wherein, along a direction perpendicular to the substrate (11), the height of the protruding portion (131) is greater than the height of the notch portion (132).
2. The heat exchanger fin according to claim 1, characterized in that: The number of the protruding portions (131) and the number of the notched portions (132) are 2 to 6 respectively.
3. The heat exchanger fin according to claim 2, characterized in that: The number of the protruding portions (131) and the number of the notched portions (132) are respectively four.
4. The heat exchanger fin according to any one of claims 1 to 3, characterized in that: The length of each of the protrusions (131) in the circumferential direction of the heat exchange tube hole (12) gradually decreases from one end connected to the base plate (11) to the other end away from the base plate (11).
5. The heat exchanger fin according to claim 1, characterized in that: The heat exchange tube holes (12) include a plurality of heat exchange tube holes (12), each of which is arranged on the substrate (11) at intervals along a preset direction (a).
6. The heat exchanger fin according to claim 5, characterized in that: The diameter of the heat exchange tube hole (12) is D, and the distance between the centers of any two adjacent heat exchange tube holes (12) is d, where d≥2D.
7. The heat exchanger fin according to claim 5, characterized in that: The substrate (11) has an upper edge (111) and a lower edge (112) arranged opposite to each other, the upper edge (111) has a first recessed portion (113), the lower edge (112) has a protruding portion (114) arranged corresponding to the first recessed portion (113), and the first recessed portion (113) and the protruding portion (114) have the same shape or the same curvature.
8. The heat exchanger fin according to claim 7, characterized in that: The upper edge (111) further has second recesses (115), and the second recesses (115) and the first recesses (113) are arranged alternately; Second flanges (14) intersecting with the substrate (11) are formed on both side edges of the substrate (11) adjacent to the upper edge (111) and the lower edge (112) and on the second recess (115).
9. The heat exchanger fin according to any one of claims 1-3 and 5-8, characterized in that: The base plate (11) is also provided with a flow guide hole (15), and the flow guide hole (15) is used to introduce a connecting medium between the heat exchange tube (20) and the base plate (11).
10. The heat exchanger fin according to claim 9, characterized in that: Each of the heat exchange tube holes (12) is arranged corresponding to at least one of the flow guide holes (15), and the flow guide holes (15) are arranged tangentially to the corresponding heat exchange tube holes (12).
11. The heat exchanger fin according to claim 10, characterized in that: The flow guide hole (15) is arranged corresponding to the notch portion (132) on the corresponding heat exchange tube hole (12).
12. A heat exchanger, characterized in that: include: The heat exchanger fin (10) according to any one of claims 1 to 11; and A heat exchange tube (20), wherein the heat exchange tube (20) is inserted into the heat exchange tube hole (12) of the heat exchanger fin (10).
13. A water heater, characterized in that: Comprising the heat exchanger (100) as claimed in claim 12.