Heat exchanger and water heater

Abstract

The utility model discloses a heat exchanger and a water heater, and relates to the technical field of water heaters, the heat exchanger comprises a heat exchange assembly, the heat exchange assembly comprises a heat exchange pipeline, and the heat exchange pipeline is provided with a water inlet port and a water outlet port; the water inlet pipe is connected with the water inlet port; the water outlet pipe is connected with the water outlet port, the water outlet pipe comprises a lifting section, and the lowest height in the pipe of the lifting section is not smaller than the highest height in the pipe of the heat exchange pipeline; under the condition that a small amount of water enters the heat exchanger, the heat exchange pipeline can still be filled with water without gaps, when the heat exchange pipeline is heated, the phenomenon that high-temperature water in the heat exchange pipeline is gasified and collides with the pipe wall at the gaps to generate vaporization noise can be avoided, the mute effect of the heat exchanger in use is improved, and the service life of the heat exchanger is prolonged. Therefore, the use experience of the water heater provided with 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 and a water heater. Background Art

[0002] When the water heater is working, water flows into the heat exchange tubes of the heat exchange assembly and the burner heats the heat exchange tubes. Figure 6 As shown in the figure, when the water pressure of the external water source pumped into the heat exchange tube is insufficient, the water inflow into the heat exchange tube is small, and the water in the heat exchange tube flows out from the outlet pipe of the water heater without filling the entire tube cavity, resulting in the top tube of the heat exchange tube being unable to be filled with water. Since the water in the heat exchange tube cannot be filled, there is a gap in the upper part of the inner cavity of the top tube. When the burner heats the heat exchange tube, the water in the tube evaporates into high-temperature steam, which collides with the tube wall and produces vaporization noise. Utility Model Content

[0003] The main purpose of the utility model is to provide a heat exchanger and a water heater, aiming to improve the quietness effect of the heat exchanger when in use.

[0004] To achieve the above-mentioned purpose, the heat exchanger proposed by the utility model comprises:

[0005] A heat exchange component, the heat exchange component comprising a heat exchange pipeline, the heat exchange pipeline having a water inlet port and a water outlet port;

[0006] a water inlet pipe connected to the water inlet port; and

[0007] A water outlet pipe is connected to the water outlet port, wherein the water outlet pipe includes a lifting section, and the lowest height inside the pipe of the lifting section is not less than the highest height inside the pipe of the heat exchange pipeline.

[0008] In one embodiment, the lifting section is located at an end of the water outlet pipe close to the water outlet port.

[0009] In one embodiment, the water outlet pipe also includes a water inlet section connected to the water outlet port, and a water outlet section used for discharging water from the heat exchanger. The two ends of the lifting section are respectively connected to the water inlet section and the water outlet section. The water inlet section rises from the water outlet port toward the lifting section, and the water outlet section falls from the lifting section to the water outlet position of the heat exchanger.

[0010] In one embodiment, the water inlet port is located below the water outlet port.

[0011] In one embodiment, the water outlet pipe located in the lifting section is arranged straight;

[0012] Alternatively, the water outlet pipe located in the lifting section is bent.

[0013] In one embodiment, the heat exchange pipeline includes a first heat exchange pipeline and a second heat exchange pipeline that are interconnected, the first heat exchange pipeline is located above the second heat exchange pipeline, the water inlet end of the second heat exchange pipeline is provided with the water inlet port, and the water outlet end of the first heat exchange pipeline is provided with the water outlet port.

[0014] In one embodiment, the heat exchange component also includes two end plates relatively arranged along a first direction, and a plurality of fins arranged between the two end plates, the first heat exchange pipeline includes a plurality of first heat exchange tubes arranged along a second direction, the plurality of first heat exchange tubes are arranged between the two end plates, and the plurality of first heat exchange tubes are connected in series in sequence to form the first heat exchange pipeline; the plurality of fins are arranged along the first direction, and the plurality of fins are passed through the plurality of first heat exchange tubes, wherein the first direction and the second direction are arranged crosswise.

[0015] In one embodiment, the second heat exchange pipeline is arranged in a spiral winding or a serpentine winding.

[0016] In one embodiment, the second heat exchange pipeline includes a second heat exchange tube, and the second heat exchange tube is a plain tube or a corrugated tube.

[0017] The utility model also provides a water heater, comprising:

[0018] A heat exchanger as described above; and

[0019] A burner is located above the heat exchanger.

[0020] The technical solution of the utility model is to set a lifting section on the water outlet pipe of the heat exchanger so that the lowest height inside the pipe of the lifting section is not less than the highest height inside the pipe of the heat exchange pipeline. When water flows from the heat exchange pipeline to the water outlet pipe and flows out through the water outlet pipe, it will pass through the lifting section. When the water level reaches the lifting section, since the lowest point of the lifting section is not less than the highest point of the heat exchange pipeline, the water level in the heat exchange pipeline can reach its highest point when water can enter the lifting section. Even when a small amount of water enters the heat exchanger, the heat exchange pipeline can still be filled with water without leaving any gaps. When the heat exchange pipeline is heated, the high-temperature vaporization of water inside it can be avoided and the collision with the pipe wall in the gap position to generate vaporization noise can be avoided, thereby improving the silent effect when the heat exchanger is used, thereby improving the user experience of the water heater equipped with the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a heat exchanger provided by the utility model;

[0023] Figure 2 A schematic structural diagram of another embodiment of a heat exchanger provided by the utility model;

[0024] Figure 3 for Figure 1 A side view of the heat exchanger;

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of the heat exchanger from another perspective;

[0026] Figure 5 It is a structural schematic diagram of the first heat exchange pipeline in the utility model;

[0027] Figure 6 This is a schematic diagram of the state in which the heat exchange tube is not fully filled with water in the prior art.

[0028] Description of Figure Numbers:

[0029] 100. heat exchanger; 10. heat exchange assembly; 11. heat exchange pipeline; 111. first heat exchange pipeline; 1111. first heat exchange tube; 1112. connecting elbow; 112. second heat exchange pipeline; 1121. second heat exchange tube; 12. end plate; 13. fin; 20. water inlet pipe; 30. water outlet pipe; 31. lifting section; 32. water inlet section; 33. water outlet section.

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0034] When the water heater is working, water flows into the heat exchange tubes of the heat exchange assembly and the burner heats the heat exchange tubes. Figure 6 As shown in the figure, when the water pressure of the external water source pumped into the heat exchange tube is insufficient, the water inflow into the heat exchange tube is small, and the water in the heat exchange tube flows out from the outlet pipe of the water heater without filling the entire tube cavity, resulting in the top tube of the heat exchange tube being unable to be filled with water. Since the water in the heat exchange tube cannot be filled, there is a gap in the upper part of the inner cavity of the top tube. When the burner heats the heat exchange tube, the water in the tube evaporates into high-temperature steam, which collides with the tube wall and produces vaporization noise.

[0035] For water heaters with burners placed on top, the topmost tube of the heat exchange tube is the fire-facing part and is closer to the burner. When the above situation occurs in the topmost tube, more gasification occurs in the tube, resulting in more severe gasification noise, which affects the user experience of the water heater.

[0036] To this end, the present invention provides a heat exchanger 100 .

[0037] See also Figures 1 to 5 In one embodiment of the utility model, the heat exchanger 100 includes a heat exchange component 10, a water inlet pipe 20 and a water outlet pipe 30; the heat exchange component 10 includes a heat exchange pipeline 11, the heat exchange pipeline 11 has a water inlet port and a water outlet port, the water inlet pipe 20 is connected to the water inlet port, the water outlet pipe 30 is connected to the water outlet port, the water outlet pipe 30 includes a lifting section 31, and the lowest height of the lifting section 31 is not less than the highest height of the heat exchange pipeline 11;

[0038] The heat exchanger 100 of the utility model can be used for a water heater with an upper burner or a water heater with a lower burner. In the utility model, the water inlet pipe 20 is used to feed normal temperature water into the heat exchange pipeline 11 of the heat exchange component 10, and the heat exchange component 10 is used to exchange the heat generated by the water heater to the normal temperature water flowing in the heat exchange pipeline 11, so that the normal temperature water in the heat exchange pipeline 11 is heated, and after being heated, the water is discharged through the water outlet pipe 30.

[0039] In this embodiment, the lowest height inside the tube of the lifting section 31 is not less than the highest height inside the tube of the heat exchange pipeline 11, which means that the lowest height of the inner wall of the tube of the lifting section 31 is greater than or equal to the highest height of the inner wall of any tube of the heat exchange pipeline 11.

[0040] In the present invention, when the heat exchanger 100 is fed with water at a small flow rate, for example, when the water pressure of the external water source connected to the water inlet pipe 20 is relatively low, the water inlet pipe 20 feeds water into the heat exchange pipeline 11 and discharges water from the water outlet pipe 30 . When water flows from the heat exchange pipe 11 to the outlet pipe 30, since the outlet pipe 30 has a lifting section 31, and the lowest height in the pipe of the lifting section 31 is not less than the highest height in the pipe of the heat exchange pipe 11, when water is transported from the heat exchange pipe 11 to the outlet pipe 30, it will pass through the lifting section 31 before flowing out from the outlet pipe 30. Therefore, when water can flow out from the lifting section 31, the water level filled in the heat exchange pipe 11 and the outlet pipe 30 at least reaches the lowest point of the lifting section 31, and the lowest point of the lifting section 31 is not less than the highest height of the end of the heat exchange pipe 11. Therefore, the heat exchange pipe 11 will be filled with water first before flowing out through the lifting section 31, or the heat exchange pipe 11 will be filled with water and flow out from the lifting section 31 at the same time. When the heat exchanger 100 is working, the water in the heat exchange pipe 11 is kept at a full water level.

[0041] The technical solution of the present utility model is to set a lifting section 31 on the water outlet pipe 30 of the heat exchanger 100 so that the lowest height in the tube of the lifting section 31 is not less than the highest height in the tube of the heat exchange pipeline 11. When water flows from the heat exchange pipeline 11 to the water outlet pipe 30 and flows out through the water outlet pipe 30, it will pass through the lifting section 31. When the water level reaches the lifting section 31, since the lowest point of the lifting section 31 is not less than the highest point of the heat exchange pipeline 11, when water can enter the lifting section 31, the water level in the heat exchange pipeline 11 can reach its highest point. Even when a small amount of water enters the heat exchanger 100, the heat exchange pipeline 11 can still be filled with water without leaving any gaps. When the heat exchange pipeline 11 is heated, the high-temperature vaporization of water inside it can be avoided and the collision with the pipe wall in the gap position to generate vaporization noise can be avoided, thereby improving the silent effect of the heat exchanger 100 when in use, thereby improving the user experience of the water heater equipped with the heat exchanger 100.

[0042] See also Figure 1As shown, in the embodiment of the present utility model, the lifting section 31 is located at one end of the water outlet pipe 30 close to the water outlet port.

[0043] Specifically, since the water outlet pipe 30 is generally arranged to extend downward, when the lifting section 31 is arranged close to the water outlet port, it is only necessary to set a small section of the water outlet pipe 30 close to the water outlet port to extend upward and connect to the lifting section 31. The water in the pipeline only needs to fill the small section from the water outlet port to the lifting section 31 so that the water can fill the heat exchange pipeline 11, which has little effect on the heat exchange inside the heat exchange pipeline 11.

[0044] Moreover, compared with the original design of the direction of the water outlet pipe, the overall change of the pipe is less, and the length of the pipe changes less, thereby saving the installation cost of the water outlet pipe 30 and saving the space for pipe layout.

[0045] Of course, the lifting section 31 can also be arranged at the end of the water outlet pipe 30 away from the water outlet port, that is, the lifting section 31 is closer to the water outlet of the heat exchanger 100. In this case, the length of the pipeline between the lifting section 31 and the water outlet port will be longer, and more water needs to be filled between the lifting section 31 and the water outlet port to fill the heat exchange pipeline 11 with water. Such a setting will affect the heat exchange effect of the heat exchange pipeline 11 and will also cause the overall length of the water outlet pipe 30 to be longer. For this reason, the utility model preferably locates the lifting section 31 at the end of the water outlet pipe 30 close to the water outlet port.

[0046] Continue reading Figure 1 In an embodiment of the utility model, the water outlet pipe 30 also includes a water inlet section 32 connected to the water outlet port, and a water outlet section 33 used for discharging water from the heat exchanger 100. The two ends of the lifting section 31 are respectively connected to the water inlet section 32 and the water outlet section 33. The water inlet section 32 rises from the water outlet port toward the lifting section 31, and the water outlet section 33 falls from the lifting section 31 to the water outlet position of the heat exchanger 100.

[0047] In the above embodiment, when the outlet pipe 30 is working, the water inlet section 32 of the outlet pipe 30 first fills the water through the outlet port. When the water inlet section 32 is full, the water level in the water inlet section 32 gradually rises. When the water level in the water inlet section 32 reaches the highest point, it flows to the lifting section 31 through the water inlet section 32. When the water rises from the water inlet section 32 to the lowest point of the lifting section 31, the heat exchange pipeline 11 is filled with water, and the water in the lifting section 31 flows to the outlet section 33, and the water level flows downward through the outlet section 33. The water flow direction inside the outlet pipe 30 is a process of first rising and then falling.

[0048] See also Figure 1 , Figure 4 As shown, in an embodiment of the present utility model, the water inlet port is located below the water outlet port.

[0049] Specifically, the heat exchanger 100 of the utility model adopts a structure of water inlet at the bottom and water outlet at the top. That is to say, the water in the heat exchange pipeline 11 generally flows from bottom to top, and the part where the water outlet pipe 30 is connected to the water outlet port is closer to the upper flow channel of the heat exchange pipeline 11. In this way, the heat exchange pipeline 11 discharges water from its highest point inside. Compared with the method of discharging water from the lowest point inside the heat exchange pipeline 11, the height difference between the lifting section 31 and the water outlet port will be lower, so there is no need to set a larger height difference between the head end and the tail end of the water inlet section 32, and the overall length of the water inlet section 32 can be arranged shorter.

[0050] Furthermore, when the utility model is applied to a water heater with an upper burner, the upper part of the heat exchange pipe 11 is closer to the burner and the temperature is higher. Therefore, when the water in the heat exchange pipe 11 flows from bottom to top, the water in the heat exchange pipe 11 is first preheated at a lower temperature at the lower part of the heat exchange pipe 11, and then further heated at the upper part of the heat exchange pipe 11, so that the heat energy of the burner is more fully utilized and the thermal efficiency of the water heater is higher.

[0051] Alternatively, in other embodiments, the water inlet port may also be arranged above the water outlet port, so that the heat exchanger 100 adopts a structure of water inlet at the top and water outlet at the bottom. With such a configuration, the water flow in the heat exchange pipeline 11 flows from top to bottom as a whole, and the water flow can flow along the heat exchange pipeline 11 under the action of its own gravity, without the need to adopt a large boosting structure. Of course, this will result in a larger height difference between the head end and the tail end of the water inlet section 32, and the overall length of the water inlet section 32 will be longer.

[0052] See also Figure 1 , Figure 4 As shown, in an embodiment of the utility model, the heat exchange pipeline 11 includes a first heat exchange pipeline 111 and a second heat exchange pipeline 112 which are interconnected. The first heat exchange pipeline 111 is located above the second heat exchange pipeline 112. The water inlet end of the second heat exchange pipeline 112 is provided with a water inlet port, and the water outlet end of the first heat exchange pipeline 111 is provided with a water outlet port.

[0053] A conversion port is provided at one end of the second heat exchange pipeline 112 connected to the first heat exchange pipeline 111. Specifically, when the heat exchanger 100 of the utility model is working, water enters the second heat exchange pipeline 112 through the water inlet pipe 20. After the water passes through the second heat exchange pipeline 112 for one heat exchange, it flows to the first heat exchange pipeline 111 through the conversion port, undergoes a second heat exchange in the first heat exchange pipeline 111, and then flows to the water outlet pipe 30 through the water outlet port for water outlet. The water flow direction is generally from bottom to top.

[0054] Since the heat exchanger 100 of the utility model can be used for a water heater with an upper burner, when the heat exchanger 100 of the utility model is applied to a water heater with an upper burner, the first heat exchange pipeline 111 is closer to the heat exchanger 100 than the second heat exchange pipeline 112, and the temperature at the first heat exchange pipeline 111 will be higher than the temperature at the second heat exchange pipeline 112. The water exchanged by the heat exchanger 100 can be preheated in the second heat exchange pipeline 112 first, and then reheated by the first heat exchange pipeline 111, so that the heat energy generated by the burner can be fully utilized. Thereby, the heat energy utilization efficiency of the gas water heater using the heat exchanger 100 can be improved.

[0055] See also Figure 1 , Figure 5 As shown, in an embodiment of the utility model, the heat exchange component 10 also includes two end plates 12 relatively arranged along a first direction, and a plurality of fins 13 arranged between the two end plates 12, the first heat exchange pipeline 111 includes a plurality of first heat exchange tubes 1111 arranged along a second direction, the plurality of first heat exchange tubes 1111 are arranged between the two end plates 12, and the plurality of first heat exchange tubes 1111 are connected in series in sequence to form the first heat exchange pipeline 111; the plurality of fins 13 are arranged along the first direction, and the plurality of fins 13 are passed through the plurality of first heat exchange tubes 1111, wherein the first direction and the second direction are arranged crosswise.

[0056] In the above embodiment, the first heat exchange pipeline 111 also includes a connecting elbow 1112 that connects adjacent first heat exchange tubes 1111 in series. Specifically, the two ends of the first heat exchange tube 1111 are respectively passed through and fixed to the two end plates 12, and the two ends of the connecting elbow 1112 are respectively connected to the ends of the two adjacent first heat exchange tubes 1111, so that the two adjacent first heat exchange tubes 1111 are connected in series through the connecting elbow 1112. When any two adjacent first heat exchange tubes 1111 are connected in series through the connecting elbow 1112, multiple first heat exchange tubes 1111 are connected in series in sequence to form the first heat exchange pipeline 111.

[0057] In the above embodiment, the fin 13 is provided with a through hole for the plurality of first heat exchange tubes 1111 to pass through, and the fin 13 is simultaneously passed through the plurality of first heat exchange tubes 1111 arranged side by side through the through hole, and one or both sides of the fin 13 are provided with a protrusion, and two adjacent fins 13 can be abutted by the protrusion, so that there is a gap between the adjacent fins 13 and the contact area can be increased by the protrusion, so that heat can be evenly transferred between the plurality of fins 13, so that the heat exchange effect of the water flow in the first heat exchange pipeline 111 is better.

[0058] See also Figure 3 , Figure 4 As shown, in the embodiment of the present utility model, the second heat exchange pipeline 112 is arranged in a spiral winding or a serpentine winding.

[0059] In this embodiment, when the second heat exchange pipeline 112 is arranged in a spiral winding, the multiple pipe sections of the second heat exchange pipeline 112 are reciprocated and lifted in the height direction of the heat exchanger 100, and the upper pipe sections of the second heat exchange pipeline 112 can be roughly located in the same plane, and the lower pipe sections of the second heat exchange pipeline 112 can also be roughly located in the same plane. In this way, the overall height of the second heat exchange pipeline 112 can be compressed, so that the overall height of the heat exchanger 100 will not be too high.

[0060] When the second heat exchange pipeline 112 is arranged in a serpentine coil, the second heat exchange pipeline 112 adopts a similar arrangement as the first heat exchange coil, that is, multiple second heat exchange tubes 1121 are arranged side by side, and the multiple second heat exchange tubes 1121 are sequentially connected in series through connecting pipelines. In addition, the second heat exchange pipeline 112 can be arranged in multiple layers, and each layer of the second heat exchange pipeline 112 is arranged in a serpentine coil, and each layer of the second heat exchange tubes 1121 are sequentially connected end to end.

[0061] See also Figure 2 and Figure 3 As shown, in the embodiment of the present utility model, the water outlet pipe 30 located in the lifting section 31 is arranged straight;

[0062] Alternatively, the water outlet pipe 30 located in the lifting section 31 is bent.

[0063] In the present invention, since a connecting elbow 1112 is provided on the outer side of the end plate 12 to connect the two first heat exchange tubes 1111 , the connecting elbow 1112 needs to be avoided when the lifting section 31 is provided on the water outlet pipe 30 .

[0064] Therefore, when the outlet pipe 30 of the lifting section 31 is arranged straight in this embodiment, the lifting section 31 is located above the connecting elbow 1112, and the end of the lifting section 31 is located above the gap between two adjacent connecting elbows 1112, or above the gap between the connecting elbow 1112 and the conversion port, and the outlet section 33 extends downward from the gap position, so that the overall arrangement spacing of the heat exchanger 100 is closer, and there will not be much change in size compared with the traditional heat exchanger 100.

[0065] When the lifting section 31 is bent in the present embodiment, since the overall size of the lifting section 31 is relatively small, the water inlet section 32 and the water outlet section 33 located at both ends of the lifting section 31 may interfere with the connecting elbow 1112. For this reason, the lifting section 31 is arranged on the side of the water outlet port away from the connecting elbow 1112 to avoid the connecting elbow 1112.

[0066] In the embodiment of the present utility model, the second heat exchange pipeline 112 includes a second heat exchange tube 1121, and the second heat exchange tube 1121 is a plain tube or a corrugated tube.

[0067] Specifically, when the utility model is applied to a water heater with an upper burner, the second heat exchange pipeline 112 is located far away from the burner and the heating temperature is low, while the temperature of the water flowing in the second heat exchange pipeline 112 is low. Therefore, condensed water will be generated on the outer tube wall of the second heat exchange tube 1121. For this reason, when the second heat exchange tube 1121 directly adopts a smooth tube or a corrugated tube, it can facilitate the dripping of condensed water and avoid the accumulation of condensed water in the second heat exchange pipeline 112.

[0068] In the embodiment of the utility model, the water inlet port and the water outlet port are respectively arranged on one end plate 12 , or the water inlet port and the water outlet port are arranged on the same end plate 12 .

[0069] Specifically, when the water inlet port and the water outlet port are respectively arranged on one end plate 12, the water inlet port and the water outlet port are respectively arranged on both sides of the heat exchanger 100, the heat exchanger 100 takes in water from one side and then discharges water from the other side, and the water inlet pipe 20 and the water outlet pipe 30 are respectively arranged on one side of the heat exchanger 100;

[0070] When the water inlet port and the water outlet port are both arranged on the same end plate 12 , the heat exchanger 100 performs water inlet and water outlet operations on the same side, and the water inlet pipe 20 and the water outlet pipe 30 are arranged relatively concentratedly.

[0071] In the embodiment of the present utility model, the heat exchanger 100 further includes a bypass pipeline, which connects the output end of the second heat exchange pipeline 112 and the water outlet pipe 30 .

[0072] When the heat exchanger 100 of the utility model is used for a water heater with an upper burner, cold water enters the second heat exchange pipeline 112. At the same time, the second heat exchange pipeline 112 is relatively far away from the heat source. The water temperature in the second heat exchange pipeline 112 is relatively low. When the output end of the second heat exchange pipeline 112 is connected to the water outlet pipe 30 through a bypass pipeline, since the water outlet pipe 30 is connected to the water outlet port, the water temperature discharged from the water outlet port is relatively high. When the water heater used by the heat exchanger 100 is in operation, a power outage occurs and an emergency stop occurs. When the water temperature inside the first heat exchange pipeline 111 continues to rise, the temperature of the water subsequently discharged from the water outlet pipe 30 will be higher. At this time, the water with a lower water temperature in the second heat exchange pipeline 112 is pumped into the water outlet pipe 30 through the bypass pipeline to reduce its water temperature, which can improve the water outlet experience of the water outlet pipe 30 in this case.

[0073] The utility model also provides a water heater, which includes a burner and a heat exchanger 100. The specific structure of the heat exchanger 100 refers to the above embodiment. Since the water heater adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the burner is located above the heat exchanger 100.

[0074] Specifically, the heat exchanger 100 of the utility model is applied to a water heater with an upper burner. The water heater includes a shell. The heat exchanger 100 and the burner are both arranged in the shell. A flue is arranged below the heat exchanger 100. The high-temperature flue gas generated by the burner during combustion flows from the first heat exchange pipeline 111 to the second heat exchange pipeline 112, and then is discharged through the flue.

[0075] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat exchanger, characterized in that: include: A heat exchange component, the heat exchange component comprising a heat exchange pipeline, the heat exchange pipeline having a water inlet port and a water outlet port; a water inlet pipe connected to the water inlet port; and A water outlet pipe is connected to the water outlet port, wherein the water outlet pipe includes a lifting section, and the lowest height inside the pipe of the lifting section is not less than the highest height inside the pipe of the heat exchange pipeline.

2. The heat exchanger according to claim 1, characterized in that The lifting section is located at one end of the water outlet pipe close to the water outlet port.

3. The heat exchanger according to claim 2, characterized in that The water outlet pipe also includes a water inlet section connected to the water outlet port, and a water outlet section used for discharging water from the heat exchanger. The two ends of the lifting section are respectively connected to the water inlet section and the water outlet section. The water inlet section rises from the water outlet port toward the lifting section, and the water outlet section falls from the lifting section to the water outlet position of the heat exchanger.

4. The heat exchanger according to claim 2, characterized in that The water inlet port is located below the water outlet port.

5. The heat exchanger according to claim 1, characterized in that The water outlet pipe located in the lifting section is arranged straight; Alternatively, the water outlet pipe located in the lifting section is bent.

6. The heat exchanger according to any one of claims 1 to 5, characterized in that The heat exchange pipeline includes a first heat exchange pipeline and a second heat exchange pipeline which are interconnected. The first heat exchange pipeline is located above the second heat exchange pipeline. The water inlet end of the second heat exchange pipeline is provided with the water inlet port, and the water outlet end of the first heat exchange pipeline is provided with the water outlet port.

7. The heat exchanger according to claim 6, characterized in that The heat exchange component also includes two end plates arranged opposite to each other along a first direction, and a plurality of fins arranged between the two end plates. The first heat exchange pipeline includes a plurality of first heat exchange tubes arranged along a second direction. The plurality of first heat exchange tubes are arranged between the two end plates. The plurality of first heat exchange tubes are connected in series in sequence to form the first heat exchange pipeline. The plurality of fins are arranged along the first direction. The plurality of fins are passed through the plurality of first heat exchange tubes, wherein the first direction is cross-arranged with the second direction.

8. The heat exchanger according to claim 6, characterized in that The second heat exchange pipeline is arranged in a spiral winding or a serpentine winding.

9. The heat exchanger according to claim 8, characterized in that The second heat exchange pipeline includes a second heat exchange tube, and the second heat exchange tube is a plain tube or a corrugated tube.

10. A water heater, characterized in that: include: The heat exchanger according to any one of claims 1 to 9; as well as A burner is located above the heat exchanger.

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