Heat absorption sheet of heat exchanger and gas water heater

Abstract

The utility model relates to a heat absorption sheet of a heat exchanger and a gas water heater. Relates to the technical field of water heaters. The heat absorption piece specifically comprises a heat absorption piece body, heat exchange holes formed in the heat absorption piece body and a flow guide assembly arranged on the heat absorption piece body. The heat exchange holes are used for allowing the heat exchange pipes to penetrate through and limiting the heat exchange pipes, and the flow guide assembly conducts flow guide on the high-temperature flue gas so that the high-temperature flue gas can get close to the heat exchange holes and flow out. The flow direction of high-temperature flue gas on the heat absorption sheet body is changed through the flow guide assembly, so that the high-temperature flue gas gets close to the heat exchange holes as much as possible when flowing through the heat absorption sheet body, heat exchange between the high-temperature flue gas and cold water in a heat exchange pipe is better achieved, heat loss of the high-temperature flue gas is reduced, the heat exchange capacity of the heat absorption sheet is improved, and the service life of the heat absorption sheet is prolonged. The heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a heat exchanger heat absorbing sheet and a gas water heater. Background Art

[0002] Water heaters are an indispensable device for home life. In terms of the energy used, they can be roughly divided into gas water heaters, electric water heaters and solar water heaters, among which gas water heaters are widely used by the general public. Existing gas water heaters are equipped with a fan, a burner and a heat exchanger inside the body. The heat exchanger is connected to a cold water pipeline and a hot water pipeline. The cold water pipeline and the hot water pipeline can form a water passage. One end of the cold water pipeline has a cold water inlet, which can be connected to an appropriate water source for inputting cold water to be heated. One end of the hot water pipeline has a hot water outlet, and cold water to be heated can be input from the cold water inlet and the cold water pipeline, so that the cold water is transported to the heat exchanger, and the cold water enters the heat exchanger for heat exchange, and then the hot water is output from the hot water pipeline and the hot water outlet for use.

[0003] The gas water heater heat exchanger, as a heat exchange device for high-temperature flue gas and water, is usually equipped with a certain heat absorbing plate for heat absorption and heat exchange, and the shape of the heat absorbing plate affects the efficiency of heat exchange. The heat absorbing plate of the existing heat exchanger is usually a flat straight surface structure, so the high-temperature flue gas below is easy to rise straight up and flow outward, resulting in poor heat absorption effect of the heat absorbing plate, thereby reducing the heat exchange efficiency of the heat exchanger, and then reducing the heating efficiency of the gas water heater. Utility Model Content

[0004] The purpose of the utility model is to provide a heat exchanger heat absorbing plate and a gas water heater to address the deficiencies of the above-mentioned prior art, which can improve the heat exchange capacity of the heat absorbing plate and thus improve the heat exchange efficiency of the heat exchanger.

[0005] The utility model proposes a heat exchanger heat absorbing plate, comprising a heat absorbing plate body, a heat exchange hole arranged on the heat absorbing plate body, and a guide component arranged on the heat absorbing plate body; the heat exchange hole is used for allowing a heat exchange tube to pass through and to limit the heat exchange tube, and the guide component guides the high-temperature flue gas to make the high-temperature flue gas move toward the direction of the heat exchange hole and flow out.

[0006] Furthermore, the heat exchange hole is arranged in the middle part of the heat absorbing plate body, and the guide component includes at least two guide flanges respectively arranged on both sides of the heat absorbing plate body, and at least two guide flanges guide the high-temperature flue gas to make the high-temperature flue gas move toward the middle part of the heat absorbing plate body.

[0007] Furthermore, the guide assembly also includes at least two guide bosses respectively arranged on both sides of the heat exchange hole, and at least two of the guide bosses respectively guide the high-temperature flue gas after being guided by the two guide flanges to make the high-temperature flue gas move toward the direction of the heat exchange hole, and the flue gas after heat exchange flows out from between the at least two guide bosses.

[0008] Furthermore, a guide surface is provided on one side of the guide boss close to the heat exchange hole, and the guide surface is used to make the high-temperature flue gas move toward the heat exchange hole, and the flue gas after heat exchange flows out from between the guide surfaces of at least two of the guide bosses.

[0009] Furthermore, the guide surface includes a smoke collecting surface arranged facing the heat exchange hole, and a smoke guiding surface arranged obliquely on the smoke collecting surface. The smoke collecting surface is used to make the high-temperature flue gas guided by the guide flange move toward the direction of the heat exchange hole, and the smoke guiding surface is used to guide the smoke flowing through the heat exchange hole.

[0010] Furthermore, the heat exchange holes are multiple and are arranged in the middle of the heat absorption plate body, and at least two of the guide bosses are respectively arranged on both sides of the multiple heat exchange holes.

[0011] Furthermore, a heat absorbing boss is provided on the heat absorbing plate body, and the heat absorbing boss is provided between the plurality of heat exchange holes.

[0012] Furthermore, along the flow direction of the high-temperature flue gas, the multiple heat exchange holes include multiple front-row heat exchange holes and multiple rear-row heat exchange holes, the heat absorption boss is arranged between the multiple front-row heat exchange holes and the multiple rear-row heat exchange holes, and the guide boss is arranged on both sides of the multiple front-row heat exchange holes and the multiple rear-row heat exchange holes.

[0013] Furthermore, the heat exchange hole has a heat absorbing flange extending outwardly, and when the heat exchange tube passes through the heat exchange hole, the heat absorbing flange is sleeved on the outside of the heat exchange tube to fix the heat exchange tube.

[0014] Furthermore, the heat absorbing plate body is also provided with a welding rod mounting hole, and the welding rod mounting hole is arranged at the outer periphery of the heat exchange hole, and is used for fixed connection between the heat absorbing flange and the heat exchange tube.

[0015] The utility model also provides a gas water heater, comprising the above-mentioned heat exchanger heat absorbing sheet.

[0016] The utility model provides a heat exchanger heat absorbing plate and a gas water heater with the following gain effects:

[0017] (1) The heat absorber changes the flow direction of the high-temperature flue gas on the heat absorber body through the guide component, so that the high-temperature flue gas flows as close to the heat exchange hole as possible when flowing through the heat absorber body, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tube, reduce the heat loss of the high-temperature flue gas, and thus improve the heat exchange capacity of the heat absorber and the heat exchange efficiency of the heat exchanger;

[0018] (2) The heat exchange hole of the heat absorber is arranged in the middle of the heat absorber, and at least two guide flanges are respectively located on both sides of the heat absorber body. The high-temperature flue gas is guided by at least two guide flanges so that the high-temperature flue gas moves toward the heat exchange tube in the middle of the heat absorber body, thereby improving the heat exchange capacity of the heat absorber and further improving the heat exchange efficiency of the heat exchanger;

[0019] (3) The guide assembly of the heat absorbing plate further comprises at least two guide bosses, which are respectively arranged on both sides of the heat exchange hole. When the high-temperature flue gas flows through the heat absorbing plate body, the high-temperature flue gas is first guided by the guide flanges on both sides of the heat absorbing plate body, and then guided by the guide bosses on both sides of the heat exchange hole until the high-temperature flue gas flows out of the heat absorbing plate body;

[0020] (4) The guide surface of the heat absorbing plate includes a smoke collecting surface and a smoke guiding surface. The smoke collecting surface is arranged toward the heat exchange hole. The high-temperature smoke is guided by the smoke collecting surface so that the high-temperature smoke further flows toward the heat exchange hole. The smoke guiding surface is arranged obliquely on the smoke collecting surface. The smoke guiding surface guides the smoke after heat exchange to accelerate the outflow of the smoke after heat exchange, thereby improving the heat exchange capacity of the heat absorbing plate and further improving the heat exchange efficiency of the heat exchanger.

[0021] (5) The heat absorbing plate body of the heat absorbing plate is also provided with a heat absorbing boss, which is located between the plurality of heat exchange holes. The heat absorbing boss can not only increase the heat absorbing area of ​​the heat absorbing plate body, but also increase the resistance of the high-temperature flue gas flow, thereby improving the heat exchange capacity of the heat absorbing plate, and further improving the heat exchange efficiency of the heat exchanger;

[0022] (6) A heat absorbing flange extends outward from the heat exchange hole of the heat absorbing plate. When the heat exchange tube passes through the heat exchange hole, the heat absorbing flange is sleeved on the outside of the heat exchange tube. The heat absorbing flange increases the contact area between the heat exchange hole and the heat exchange tube, which not only makes the fixation of the heat exchange tube in the heat exchange hole more stable, but also increases the heat exchange area between the heat absorbing plate body and the heat exchange tube, thereby improving the heat exchange capacity of the heat absorbing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the utility model and, together with the description, are used to explain the principle of the utility model. In the accompanying drawings, like reference numerals are used to represent like elements.

[0024] Figure 1A schematic diagram of the structure of a heat exchanger heat absorbing plate and a smoke distribution diagram of an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of installing multiple heat absorbing plate bodies of a heat exchanger heat absorbing plate according to an embodiment of the utility model in a heat exchanger.

[0026] In the figure: 1. heat absorbing plate body; 2. heat exchange hole; 3. flow guide flange; 4. flow guide boss; 41. flow guide surface; 5. heat absorbing boss; 6. heat absorbing flange; 7. welding rod installation hole; 8. heat exchange tube. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] See also Figure 1 and Figure 2 A heat exchanger heat absorbing plate according to an embodiment of the utility model comprises a heat absorbing plate body 1, a heat exchange hole 2 arranged on the heat absorbing plate body 1, and a flow guide component arranged on the heat absorbing plate body 1; the heat exchange hole 2 is used for allowing a heat exchange tube 8 to pass through and to limit the heat exchange tube 8, and the flow guide component guides the high-temperature flue gas to make the high-temperature flue gas move toward the direction of the heat exchange hole 2 and flow out.

[0029] In the present application, the heat exchanger heat absorption plate includes a heat absorption plate body 1, a heat exchange hole 2 and a guide component. The heat exchange hole 2 is a through hole set on the heat absorption plate body 1, and the heat exchange tube 8 passes through the heat exchange hole 2, so that the heat exchange tube 8 is limited by the heat exchange hole 2, so that when the high-temperature flue gas flows through the heat absorption plate body 1, the heat of the high-temperature flue gas heats the cold water in the heat exchange tube 8.

[0030] A flow guide component is also provided on the heat absorbing plate body 1. When the high-temperature flue gas flows through the heat absorbing plate body 1, the flow guide component guides the high-temperature flue gas. The flow direction of the high-temperature flue gas on the heat absorbing plate body 1 is changed by the flow guide component, so that the high-temperature flue gas, when flowing through the heat absorbing plate body 1, moves as close as possible to the direction of the heat exchange hole 2, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tube 8, reduce the heat loss of the high-temperature flue gas, and thus improve the heat exchange capacity of the heat absorbing plate and the heat exchange efficiency of the heat exchanger.

[0031] In this embodiment, the heat exchange hole 2 is arranged in the middle of the heat absorbing plate body 1, and the flow guide assembly includes at least two flow guide flanges 3 respectively arranged on both sides of the heat absorbing plate body 1, and the at least two flow guide flanges 3 guide the high-temperature flue gas to make the high-temperature flue gas move toward the middle of the heat absorbing plate body 1. In the present application, the flow guide assembly includes at least two flow guide flanges 3, and the at least two flow guide flanges 3 are respectively arranged on both sides of the heat absorbing plate body 1. When the high-temperature flue gas flows through the heat absorbing plate body 1, the at least two flow guide flanges 3 located on both sides of the heat absorbing plate body 1 guide the high-temperature flue gas to make the high-temperature flue gas move toward the middle of the heat absorbing plate body 1.

[0032] In the present application, the heat exchange hole 2 is arranged in the middle of the heat absorption plate body 1, so the heat exchange tube 8 passes through the heat exchange hole 2, and when the heat exchange hole 2 limits the heat exchange tube 8, the heat exchange tube 8 is fixed in the middle of the heat absorption plate body 1. When at least two guide flanges 3 located on both sides of the heat absorption plate body 1 guide the high-temperature flue gas, the high-temperature flue gas moves toward the heat exchange tube 8 in the middle of the heat absorption plate body 1, so that the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tube 8, reduce the heat loss of the high-temperature flue gas, and then improve the heat exchange capacity of the heat absorption plate and the heat exchange efficiency of the heat exchanger.

[0033] In this embodiment, the flow guide assembly further includes at least two flow guide bosses 4 respectively arranged on both sides of the heat exchange hole 2, and the at least two flow guide bosses 4 respectively guide the high-temperature flue gas after being guided by the two flow guide flanges 3, so as to make the high-temperature flue gas approach the direction of the heat exchange hole 2, and the flue gas after heat exchange flows out from between the at least two flow guide bosses 4. In the present application, the flow guide assembly further includes at least two flow guide bosses 4, and the at least two flow guide bosses 4 are respectively arranged on both sides of the heat exchange hole 2. When the high-temperature flue gas flows through the heat absorption plate body 1, the high-temperature flue gas is first guided by the at least two flow guide flanges 3 located on both sides of the heat absorption plate body 1, and then guided by the at least two flow guide bosses 4 located on both sides of the heat exchange hole 2, until the flue gas flows out from the heat absorption plate body 1.

[0034] The guide flange 3 guides the high-temperature flue gas so that it flows toward the direction close to the heat exchange hole 2, and the guide boss 4 continues to guide the high-temperature flue gas so that it flows close to the periphery of the heat exchange hole 2. Therefore, when the heat exchange tube 8 is fixed on the heat absorption plate body 1, the high-temperature flue gas can better exchange heat with the cold water in the heat exchange tube 8, thereby reducing the heat loss of the high-temperature flue gas, improving the heat exchange capacity of the heat absorption plate, and further improving the heat exchange efficiency of the heat exchanger. The flue gas that has exchanged heat with the cold water in the heat exchange tube 8 flows out from between at least two guide bosses 4 under the guidance of the guide boss 4, thereby accelerating the outflow of the flue gas after heat exchange and further improving the heat exchange capacity of the heat absorption plate.

[0035] In this embodiment, a guide surface 41 is provided on one side of the guide boss 4 close to the heat exchange hole 2, and the guide surface 41 is used to make the high-temperature flue gas approach the direction of the heat exchange hole 2, and the flue gas after heat exchange flows out from between the guide surfaces 41 of at least two guide bosses 4. In this application, a guide surface 41 is provided on one side of the guide boss 4 close to the heat exchange hole 2, and when the high-temperature flue gas flows into the heat absorption plate body 1, the guide flanges 3 located on both sides of the heat absorption plate body 1 first guide the high-temperature flue gas to flow in the direction close to the heat exchange hole 2, and the guide surface 41 of the guide boss 4 then guides the high-temperature flue gas after being guided by the guide flanges 3. Since the guide surface 41 is arranged toward the heat exchange hole 2, the high-temperature flue gas guided by the guide surface 41 continues to flow toward the direction close to the heat exchange hole 2, and finally flows out of the heat absorption plate body 1 between the guide surfaces 41 of at least two guide bosses 4, so that the high-temperature flue gas can fully contact the wall of the heat exchange tube 8 fixed in the heat exchange hole 2, and then better exchange heat with the cold water in the heat exchange tube 8, thereby improving the heat exchange capacity of the heat absorption plate.

[0036] In this embodiment, the guide surface 41 includes a smoke collecting surface arranged facing the heat exchange hole 2, and a smoke guiding surface arranged obliquely on the smoke collecting surface. The smoke collecting surface is used to make the high-temperature flue gas guided by the guide flange 3 approach the direction of the heat exchange hole 2, and the smoke guiding surface is used to guide the flue gas flowing through the heat exchange hole 2. In this application, the guide surface 41 includes a smoke collecting surface, which is connected to the guide flange 3 and arranged facing the heat exchange hole 2. Therefore, the high-temperature flue gas passing through the guide flange 3 is further guided by the smoke collecting surface and further flows in the direction of the heat exchange hole 2, so that the high-temperature flue gas fully contacts the wall of the heat exchange tube 8 fixed in the heat exchange hole 2, thereby improving the heat exchange capacity of the heat absorbing plate, and further improving the heat exchange efficiency of the heat exchanger.

[0037] In the present application, the flow guide surface 41 also includes a smoke guide surface, which is inclined on the side of the smoke collecting surface away from the flow guide flange 3, and the smoke guide surfaces of at least two flow guide bosses 4 are inclined in a direction close to each other. After the smoke collecting surface further guides the high-temperature smoke, so that the high-temperature smoke fully contacts the outer wall of the heat exchange tube 8 fixed to the heat exchange hole 2, the smoke guide surfaces of at least two flow guide bosses 4 guide the smoke after heat exchange, so that the smoke flows out of the heat absorbing plate body 1 between at least two flow guide bosses 4, thereby accelerating the outflow of the smoke after heat exchange, and further improving the heat exchange capacity of the heat absorbing plate.

[0038] In this embodiment, the heat exchange holes 2 are multiple and are arranged in the middle of the heat absorption plate body 1, and at least two guide bosses 4 are respectively arranged on both sides of the multiple heat exchange holes 2. In this application, the heat absorption plate body 1 is provided with multiple heat exchange holes 2, for respectively allowing multiple heat exchange tubes 8 to pass through, so that the heat exchange tubes 8 are limited by the heat exchange holes 2, so that when the high-temperature flue gas flows through the heat absorption plate body 1, the heat of the high-temperature flue gas simultaneously heats the cold water in the multiple heat exchange tubes 8, thereby improving the heat exchange capacity of the heat absorption plate and the heat exchange efficiency of the heat exchanger.

[0039] The plurality of heat exchange holes 2 are all arranged in the middle of the heat absorbing plate body 1, that is, the plurality of heat exchange tubes 8 respectively penetrating the plurality of heat exchange holes 2 are also fixed in the middle of the heat absorbing plate body 1. At least two flow guide flanges 3 are respectively arranged on both sides of the heat absorbing plate body 1, so when the high-temperature flue gas flows through the heat absorbing plate body 1, the at least two flow guide flanges 3 located on both sides of the heat absorbing plate body 1 first guide the high-temperature flue gas to flow toward the middle of the heat absorbing plate body 1.

[0040] At least two guide bosses 4 are respectively arranged on both sides of the multiple heat exchange holes 2. The high-temperature flue gas guided by the guide flange 3 is further guided by the guide boss 4, so that the high-temperature flue gas continues to flow toward the multiple heat exchange tubes 8 in the middle of the heat absorption plate body 1, so that the high-temperature flue gas is fully in contact with the outer wall of the heat exchange tube 8 fixed in the middle of the heat absorption plate body 1. The flue gas after heat exchange then quickly flows out of the heat absorption plate body 1 between the at least two guide bosses 4, thereby improving the heat exchange capacity of the heat absorption plate, and then improving the heat exchange efficiency of the heat exchanger.

[0041] In this embodiment, a heat absorbing boss 5 is further provided on the heat absorbing plate body 1, and the heat absorbing boss 5 is provided between the plurality of heat exchange holes 2. In order to prevent the plurality of heat exchange tubes 8 respectively fixed in the plurality of heat exchange holes 2 from interfering with each other, the plurality of heat exchange holes 2 are spaced apart in the middle of the heat absorbing plate body 1. Therefore, even if the guide boss 4 guides the high-temperature flue gas to the middle of the heat absorbing plate body 1, there is a situation where part of the high-temperature flue gas cannot exchange heat with the heat exchange tube 8, resulting in heat loss of the high-temperature flue gas.

[0042] Therefore, in the present application, a heat absorbing boss 5 is further provided on the heat absorbing plate body 1, and the heat absorbing boss 5 is located between the plurality of heat exchange holes 2. Through the heat absorbing boss 5, on the one hand, the heat of the high-temperature flue gas between the plurality of heat exchange holes 2 that cannot exchange heat with the heat exchange tube 8 can be absorbed, and the heat absorbing boss 5 and the heat absorbing plate body 1 are an integrated structure. Therefore, the heat absorbed by the heat absorbing boss 5 can be conducted to the heat exchange tube 8 through the heat absorbing plate body 1, and heat exchange is performed with the cold water in the heat exchange tube 8, thereby reducing the heat loss of the high-temperature flue gas, improving the heat exchange capacity of the heat absorbing plate, and further improving the heat exchange efficiency of the heat exchanger.

[0043] On the other hand, the heat absorbing boss 5 located between the multiple heat exchange holes 2 is arranged on the outflow path of the high-temperature flue gas, so the heat absorbing boss 5 can increase the flow resistance of the high-temperature flue gas, prevent the high-temperature flue gas from flowing out too quickly, thereby improving the heat exchange capacity of the heat absorbing plate, and further improving the heat exchange efficiency of the heat exchanger. In the present application, the heat absorbing boss 5 is preferably a cylindrical boss, which can increase the contact area between the heat absorbing boss 5 and the high-temperature flue gas, thereby enhancing the heat absorption capacity of the heat absorbing boss 5, and further improving the heat exchange capacity of the heat absorbing plate.

[0044] In this embodiment, the plurality of heat exchange holes 2 include a plurality of front row heat exchange holes and a plurality of rear row heat exchange holes, and along the flow direction of the high-temperature flue gas on the heat absorption plate body 1, the plurality of rear row heat exchange holes are located downstream of the plurality of front row heat exchange holes. The heat absorption boss 5 is arranged between the front row heat exchange holes and the rear row heat exchange holes, so that in the process of the high-temperature flue gas flowing from the front row heat exchange holes to the rear row heat exchange holes, the heat absorption boss 5 can increase the flow resistance of the high-temperature flue gas, and prevent the high-temperature flue gas from flowing out too quickly, so that the high-temperature flue gas is fully in contact with the heat exchange tube 8, and better heat exchanges with the cold water in the heat exchange tube 8, heating it, thereby improving the heat exchange capacity of the heat absorption plate and improving the heat exchange efficiency of the heat exchanger.

[0045] At least two guide bosses 4 are arranged on both sides of the multiple front-row heat exchange holes and the rear-row heat exchange holes. Under the guidance of at least two guide flanges 3, the high-temperature flue gas is gathered toward the middle area of ​​the heat absorption plate body 1, and then further guided by the guide boss 4, so that the high-temperature flue gas continues to flow toward the multiple heat exchange tubes 8 in the middle of the heat absorption plate body 1, so that the high-temperature flue gas is fully in contact with the outer wall of the heat exchange tube 8 fixed in the middle of the heat absorption plate body 1, and the flue gas after heat exchange quickly flows out of the heat absorption plate body 1 between the at least two guide bosses 4, thereby improving the heat exchange capacity of the heat absorption plate, and then improving the heat exchange efficiency of the heat exchanger.

[0046] In this embodiment, the heat exchange hole 2 has a heat absorbing flange 6 extending outward, and when the heat exchange tube 8 passes through the heat exchange hole 2, the heat absorbing flange 6 is sleeved on the outside of the heat exchange tube 8 to fix the heat exchange tube 8. In this application, the heat exchange hole 2 has a heat absorbing flange 6 extending outward, and when the heat exchange tube 8 passes through the heat exchange hole 2, the heat absorbing flange 6 is sleeved on the outside of the heat exchange tube 8. On the one hand, the heat absorbing flange 6 extends the inner wall thickness of the heat exchange hole 2, thereby increasing the contact area between the heat exchange hole 2 and the heat exchange tube 8, making the fixation of the heat exchange tube 8 in the heat exchange hole 2 more stable.

[0047] On the other hand, the heat absorbing flange 6 can absorb the heat of the high-temperature flue gas. The heat absorbing flange 6 and the heat absorbing plate body 1 are an integrated structure. By sleeved on the outside of the heat exchange tube 8, the contact area between the heat absorbing plate body 1 and the heat exchange tube 8 can be increased, so that the heat absorbed by the heat absorbing plate body 1 can be better exchanged with the cold water in the heat exchange tube 8, thereby improving the heat exchange capacity of the heat absorbing plate and improving the heat exchange efficiency of the heat exchanger.

[0048] In this embodiment, the heat absorbing plate body 1 is also provided with a welding rod installation hole 7, which is arranged on the periphery of the heat exchange hole 2 and is used for the fixed connection between the heat absorption flange 6 and the heat exchange tube 8. In this application, the heat absorbing plate body 1 is also provided with a welding rod installation hole 7, which is arranged on the periphery of the heat exchange hole 2 to connect the heat exchange hole 2 with the outside. When the heat exchange tube 8 passes through the heat exchange hole 2 and the heat absorption flange 6 is sleeved on the outside of the heat exchange tube 8, a welding rod can be installed in the welding rod installation hole 7. After the welding rod is melted at high temperature, the welding rod welds the heat exchange tube 8 and the heat absorption flange 6 together, and the heat exchange tube 8 and the heat absorption flange 6 are welded firmly, thereby realizing the fixation of the heat exchange tube 8 on the heat absorbing plate body 1.

[0049] This embodiment also provides a gas water heater, including the above-mentioned heat exchanger heat absorbing plate.

[0050] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present utility model.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A heat exchanger heat absorbing sheet, characterized in that: The invention comprises a heat absorbing plate body (1), a heat exchange hole (2) provided on the heat absorbing plate body (1), and a flow guide component provided on the heat absorbing plate body (1); the heat exchange hole (2) is used for allowing a heat exchange tube (8) to pass through and for limiting the heat exchange tube (8); the flow guide component guides high-temperature flue gas so as to make the high-temperature flue gas approach and flow out in the direction of the heat exchange hole (2); a heat absorbing flange (6) extends outward from the heat exchange hole (2); when the heat exchange tube (8) passes through the heat exchange hole (2), the heat absorbing flange (6) is sleeved on the outside of the heat exchange tube (8) so as to fix the heat exchange tube (8).

2. A heat exchanger heat absorbing sheet as claimed in claim 1, characterized in that: The heat exchange hole (2) is arranged in the middle of the heat absorbing plate body (1), and the flow guide component comprises at least two flow guide flanges (3) respectively arranged on both sides of the heat absorbing plate body (1), and at least two flow guide flanges (3) guide the high-temperature flue gas to make the high-temperature flue gas move towards the middle of the heat absorbing plate body (1).

3. A heat exchanger heat absorbing sheet as claimed in claim 2, characterized in that: The flow guide component further comprises at least two flow guide bosses (4) respectively arranged on both sides of the heat exchange hole (2), and the at least two flow guide bosses (4) respectively guide the high-temperature flue gas after being guided by the two flow guide flanges (3), so as to make the high-temperature flue gas move towards the direction of the heat exchange hole (2), and the flue gas after heat exchange flows out from between the two flow guide bosses (4).

4. A heat exchanger heat absorbing sheet as claimed in claim 3, characterized in that: A guide surface (41) is provided on one side of the guide boss (4) close to the heat exchange hole (2), and the guide surface (41) is used to make the high-temperature flue gas move towards the heat exchange hole (2), and the flue gas after heat exchange flows out from between the guide surfaces (41) of at least two of the guide bosses (4).

5. A heat exchanger heat absorbing sheet as claimed in claim 4, characterized in that: The guide surface (41) comprises a smoke collecting surface arranged facing the heat exchange hole (2), and a smoke guiding surface arranged obliquely on the smoke collecting surface, the smoke collecting surface being used to direct the high-temperature smoke after passing through the guide flange (3) toward the direction of the heat exchange hole (2), and the smoke guiding surface being used to guide the smoke flowing through the heat exchange hole (2).

6. A heat exchanger heat absorbing sheet as claimed in claim 3, characterized in that: The heat exchange holes (2) are multiple and are arranged in the middle of the heat absorption plate body (1), and at least two of the flow guide bosses (4) are respectively arranged on both sides of the multiple heat exchange holes (2).

7. A heat exchanger heat absorbing sheet as claimed in claim 6, characterized in that: The heat absorbing plate body (1) is also provided with a heat absorbing boss (5), and the heat absorbing boss (5) is arranged between the plurality of heat exchange holes (2).

8. A heat exchanger heat absorbing sheet as claimed in claim 7, characterized in that: Along the flow direction of the high-temperature flue gas, the plurality of heat exchange holes (2) include a plurality of front-row heat exchange holes and a plurality of rear-row heat exchange holes, the heat absorption boss (5) is arranged between the plurality of front-row heat exchange holes and the plurality of rear-row heat exchange holes, and the flow guide boss (4) is arranged on both sides of the plurality of front-row heat exchange holes and the plurality of rear-row heat exchange holes.

9. A heat exchanger heat absorbing sheet as claimed in claim 1, characterized in that: The heat absorbing plate body (1) is also provided with a welding rod mounting hole (7), the welding rod mounting hole (7) being arranged on the outer periphery of the heat exchange hole (2) and being used for fixed connection between the heat absorbing flange (6) and the heat exchange tube (8).

10. A gas water heater, characterized in that: A heat exchanger heat absorbing sheet comprising any one of claims 1-9.

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