Water tank and water heater

Abstract

The utility model belongs to the technical field of electric appliances, and particularly relates to a water tank and a water heater. The water inlet pipe is communicated with the lower part of one side of the box body; the water outlet pipe is communicated with the upper part of the other side of the box body; the connecting pipe is arranged in the box body, the connecting pipe is communicated with the water inlet pipe, a water outlet part is arranged on the connecting pipe, and the water outlet area of the water outlet part is reduced in the direction from the water inlet pipe to the water outlet pipe; according to the water tank and the water heater, the hot water yield of the water tank can be increased.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to a water tank and a water heater. Background Technology

[0002] A top-mounted solar water heater is a device that uses solar energy to heat and store hot water.

[0003] The related technology of top-mounted solar water heaters includes a water tank, with an inlet pipe and an outlet pipe installed on opposite sides of the water tank. The inlet pipe is located at the bottom of the water tank, and the outlet pipe is located at the top of the water tank. Tap water enters through the inlet pipe at the bottom, and the hot water naturally rises to the top of the water tank due to its lower density, so that the hot water at the top of the water tank can be pushed out along the outlet pipe at the top.

[0004] However, during the process of water entering the water tank through the inlet pipe, due to the pressure of the tap water, the tap water entering the water tank can flow towards the middle of the water tank, causing the tap water to push out the hot water in the middle of the water tank and near the outlet pipe. The hot water in the water tank near the inlet pipe cannot be effectively pushed to the outlet pipe, thus reducing the amount of hot water output from the water tank. Utility Model Content

[0005] This application provides a water tank and a water heater to solve the technical problem in related technologies where hot water near the inlet pipe cannot be effectively pushed out of the water tank, thereby reducing the amount of hot water output from the water tank.

[0006] In a first aspect, this application provides a water tank, comprising:

[0007] Box;

[0008] A water inlet pipe, which is connected to the lower part of one side of the tank;

[0009] A water outlet pipe, which is connected to the upper part of the other side of the tank;

[0010] A connecting pipe is disposed inside the housing and is connected to the water inlet pipe. The connecting pipe is provided with a water outlet, and the water outlet area decreases from the water inlet pipe toward the water outlet pipe.

[0011] In some embodiments, the water outlet includes a plurality of water outlet holes, and the water outlet area of ​​the plurality of water outlet holes decreases sequentially from the water inlet pipe toward the water outlet pipe.

[0012] In some embodiments, the plurality of water outlet holes form at least one group of water outlet holes, and the water outlet area of ​​each water outlet hole in each group of water outlet holes decreases sequentially from the water inlet pipe toward the water outlet pipe;

[0013] The centers of each group of water outlet holes are located on the same straight line, and the straight line is parallel to the axis of the connecting pipe.

[0014] In some embodiments, the plurality of water outlets face the bottom wall of the tank.

[0015] In some embodiments, the water outlet includes a strip-shaped hole, the water outlet area of ​​which gradually decreases from the water inlet pipe toward the water outlet pipe.

[0016] In some embodiments, one end of the connecting pipe is connected to the water inlet pipe, and the other end of the connecting pipe is closed.

[0017] In some embodiments, an indicator is also included, which is disposed on the inlet pipe and is used to indicate the orientation of the outlet section within the tank.

[0018] In some embodiments, the indicator includes a protrusion disposed on the outer wall of the inlet pipe, the protrusion being located on the same straight line as the outlet.

[0019] In some embodiments, a connector is further included, which is disposed on the outer wall of the housing. The water inlet pipe and the connecting pipe are integrally disposed. The connector is used to insert into or detach from the water inlet pipe to fix or detach the water inlet pipe and the connecting pipe from the housing.

[0020] Secondly, this application provides a water heater, including a water heater body and a water tank disposed on the water heater body, wherein a detection element is disposed on the water heater body, and the detection element is used to detect the water temperature above the connecting pipe.

[0021] This application provides a water tank and a water heater. The water tank provided by this application, by adopting a connecting pipe, allows tap water to enter the connecting pipe when tap water is input along the inlet pipe. Because the connecting pipe is provided with a water outlet, and the water outlet area decreases from the inlet pipe towards the outlet pipe, the water output of the outlet near the inlet pipe is greater than the water output of the outlet far from the inlet pipe. The side of the connecting pipe near the inlet pipe can output more tap water, thereby allowing the tap water to push the hot water stagnating above the connecting pipe toward the outlet pipe, increasing the water output of the water tank. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the structure of the water tank provided in an embodiment of this application;

[0024] Figure 2 A schematic diagram of a half-section structure of a water tank provided in an embodiment of this application;

[0025] Figure 3 for Figure 2 Enlarged view of part A in the image;

[0026] Figure 4 Schematic diagram of the structure of the water inlet pipe and connecting pipe provided in the embodiments of this application Figure 1 ;

[0027] Figure 5 Schematic diagram of the structure of the water inlet pipe and connecting pipe provided in the embodiments of this application Figure 2 ;

[0028] Figure 6 A simulation diagram of the end of the hot water output process in the relevant technology;

[0029] Figure 7 A simulation diagram of the water tank provided in this application at the end of the warm water discharge process.

[0030] Explanation of reference numerals in the attached drawings: 100, box body; 120, barrel body; 130, cover plate; 200, water inlet pipe; 300, connecting pipe; 400, water outlet; 500, water outlet pipe; 600, indicator; 700, connector; 800, detection component; 900, strip hole.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] The related technology of top-mounted solar water heaters includes a water tank, with an inlet pipe and an outlet pipe installed on opposite sides of the water tank. The inlet pipe is located at the bottom of the water tank, and the outlet pipe is located at the top of the water tank. Tap water enters through the inlet pipe at the bottom, and the hot water naturally rises to the top of the water tank due to its lower density, so that the hot water at the top of the water tank can be pushed out along the outlet pipe at the top.

[0034] However, during the process of water entering the water tank through the inlet pipe, due to the pressure of the tap water, the tap water entering the water tank can flow towards the middle of the water tank, causing the tap water to push out the hot water in the middle of the water tank and near the outlet pipe. The hot water in the water tank near the inlet pipe cannot be effectively pushed to the outlet pipe, thus reducing the amount of hot water output from the water tank.

[0035] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0036] Combination Figures 1 to 4 This application provides a water tank, comprising:

[0037] Box 100;

[0038] Water inlet pipe 200 is connected to the lower part of one side of the housing 100;

[0039] Water outlet pipe 500 is connected to the upper part of the other side of the tank 100;

[0040] A connecting pipe 300 is installed inside the housing 100 and is connected to the inlet pipe 200. The connecting pipe 300 is provided with a water outlet, and the water outlet area decreases from the inlet pipe 200 toward the outlet pipe 500.

[0041] In this embodiment, the box 100 includes a barrel body 120 and a cover plate 130. The barrel body 120 is circular and arranged horizontally. Both ends of the barrel body 120 are provided with cover plates 130. The barrel body 120 and the cover plate 130 are integrally formed, or the cover plate 130 can be fixed to the barrel body 120 by welding. The water inlet pipe 200 is provided at the lower part of one side of the cover plate 130, and the water outlet pipe 500 is provided at the upper part of the other side of the cover plate 130. Both the water inlet pipe 200 and the water outlet pipe 500 are circular.

[0042] In this application, by adopting the setting of the connecting pipe 300, when tap water is input along the inlet pipe 200, the tap water can enter into the connecting pipe 300. Because the connecting pipe 300 is provided with a water outlet, and the water outlet area decreases from the inlet pipe 200 towards the outlet pipe 500, the water output of the outlet near the inlet pipe 200 is greater than the water output of the outlet far from the inlet pipe 200. The side of the connecting pipe 300 near the inlet pipe 200 can output more tap water, thereby enabling the tap water to push the hot water stagnating above the connecting pipe 300 toward the outlet pipe 500, increasing the water output of the water tank.

[0043] Combination Figures 1 to 4 The water outlet section includes multiple water outlet holes 400, and the water outlet area of ​​the multiple water outlet holes 400 decreases sequentially from the water inlet pipe 200 toward the water outlet pipe 500.

[0044] In this embodiment, the water outlet 400 is circular; in other embodiments, multiple water outlets 400 can be provided on the connecting pipe 300 along the circumference of the connecting pipe 300, and multiple sets of multiple water outlets 400 can be provided along the length of the connecting pipe 300. The shape of the water outlet 400 can be adjusted as needed, for example, the water outlet 400 can be set as a rectangle.

[0045] Combination Figures 1 to 4 Multiple water outlets 400 form at least one group of water outlets. The water outlet area of ​​each water outlet 400 in each group of water outlets decreases sequentially from the water inlet pipe 200 toward the water outlet pipe 500. The centers of each group of water outlets are located on the same straight line, and the straight line is parallel to the axis of the connecting pipe 300.

[0046] In this embodiment, five water outlet holes 400 form a group of water outlet holes, and one group of water outlet holes is provided; in other embodiments, four groups of water outlet holes can be evenly distributed along the circumference of the connecting pipe 300.

[0047] Combination Figures 1 to 4 Multiple water outlets 400 face the bottom wall of the tank 100. In other embodiments, the water outlets 400 may also face the top wall of the tank 100.

[0048] The connecting pipe 300 is set in a horizontal direction, and the connecting pipe 300 and the water inlet pipe 200 are set coaxially.

[0049] In this application, by arranging the connecting pipe 300 horizontally inside the tank 100 and making the straight line parallel to the axis of the connecting pipe 300, when tap water is sprayed out along the multiple water outlets 400, the tap water can flow upward along the length of the connecting pipe 300, thereby enabling the hot water at various positions above the connecting pipe 300 to be pushed by the tap water, thus further increasing the hot water output of the water tank; by arranging the multiple water outlets 400 on the bottom wall of the connecting pipe 300, the cold water sprayed out by the water outlets 400 is prevented from flowing directly towards the top of the tank 100, thereby preventing the cold water sprayed out by the water outlets 400 from affecting the hot water at the top of the tank 100.

[0050] In other embodiments, the connecting pipe 300 can be vertically positioned inside the tank 100, and the multiple water outlets 400 can be positioned with their water outlet direction facing the cover plate 130 where the water inlet pipe 200 is located. When tap water is sprayed out along the multiple water outlets 400, the tap water can move towards the end cover. The tap water blocked by the end cover can move upward, which can also push the hot water above the connecting pipe 300 towards the water outlet pipe 500, thereby increasing the hot water output of the water tank.

[0051] Combination Figures 1 to 4 The water inlet pipe 200 and the tank body 100 are coaxially arranged.

[0052] In this embodiment, the water outlet area of ​​the inlet pipe 200 is the same as that of the connecting pipe 300, and the inlet pipe 200 and the connecting pipe 300 are integrally formed; in other embodiments, the shapes of the inlet pipe 200 and the connecting pipe 300 can be adapted as needed, for example, the inlet pipe 200 and the connecting pipe 300 can be set as “L” shape.

[0053] In this application, by making the inlet pipe 200 and the tank 100 coaxial, and the connecting pipe 300 coaxial with the inlet pipe 200, the flow rate of tap water will not be affected when the tap water enters the connecting pipe 300 along the inlet pipe 200. This prevents the tap water from being unable to flow above the connecting pipe 300 due to the slow flow rate when the tap water enters the connecting pipe 300. This increases the pushing strength of the tap water on the hot water above the connecting pipe 300 when it is sprayed from the outlet 400, thereby further increasing the hot water output of the water tank.

[0054] Combination Figures 1 to 4 One end of the connecting pipe 300 is connected to the water inlet pipe 200, and the other end of the connecting pipe 300 is closed.

[0055] In this application, by sealing the other end of the connecting pipe 300, tap water can only be sprayed out through the outlet hole 400, preventing tap water from spraying out along the end of the connecting pipe 300. This prevents interference between the hot water flowing from the top of the connecting pipe 300 toward the outlet pipe 500 and the hot water in the middle of the tank 100, thereby indirectly improving the flow effect of the hot water flowing from the top of the connecting pipe 300 to the outlet pipe 500.

[0056] In other embodiments, the connecting pipe 300 can be configured as a "U" shape, with the middle of the outer wall of the "U"-shaped connecting pipe 300 connected to the water inlet pipe 200, and both ends of the connecting pipe 300 extending horizontally away from the water inlet pipe 200, so that when tap water enters the "U"-shaped connecting pipe 300, it can spray out along both ends of the "U"-shaped connecting pipe 300 at the same time, thereby further improving the effect of tap water pushing the hot water above the connecting pipe 300 to the water outlet pipe 500.

[0057] Combination Figures 1 to 4 The length of the connecting pipe 300 is greater than the length of the inlet pipe 200.

[0058] In this application, by making the length of the connecting pipe 300 greater than the length of the inlet pipe 200, the length of the connecting pipe 300 inside the housing 100 is longer, thereby indirectly increasing the number of water outlets arranged on the connecting pipe 300.

[0059] In other embodiments, the length of the connecting pipe 300 may be less than the length of the inlet pipe 200, or the length of the connecting pipe 300 may be equal to the length of the inlet pipe 200.

[0060] Combination Figures 1 to 5 In some embodiments, the water outlet includes a strip-shaped hole 900, the water outlet area of ​​which gradually decreases from the water inlet pipe 200 toward the water outlet pipe 500.

[0061] In this embodiment, the strip-shaped hole 900 is arranged along the length direction of the connecting pipe 300, and the width of the strip-shaped hole 900 gradually decreases from the water inlet pipe 200 toward the water outlet pipe 500. By tilting the opposite sides of the strip-shaped hole 900, one side of the strip-shaped hole 900 can be tilted toward the other side, so that the width of the strip-shaped hole 900 gradually decreases from the water inlet pipe 200 toward the water outlet pipe 500. In other embodiments, the opposite sides of the strip-shaped hole 900 can also be set as wavy, and the width of the strip-shaped hole 900 can be gradually reduced.

[0062] Combination Figures 1 to 4 The water tank also includes an indicator 600, which is installed on the inlet pipe 200 and is used to indicate the position of the outlet section within the tank body 100.

[0063] In this application, since the tank 100 is usually enclosed and opaque, it is difficult to know the position of the water outlet on the connecting pipe 300 when the water inlet pipe 200 drives the connecting pipe 300 into the tank 100. By using an indicator 600 and placing the indicator 600 on the water inlet pipe 200, when the water inlet pipe 200 drives the connecting pipe 300 into the water tank, the installer can observe the indicator 600, which can indicate the position of the water outlet in the tank 100, thereby facilitating the installation of the water outlet and improving the installation effect of the connecting pipe 300.

[0064] Combination Figures 1 to 4 The indicator 600 includes a protrusion, which is disposed on the outer wall of the water inlet pipe 200, and the protrusion and the water outlet are located on the same straight line.

[0065] In this embodiment, the protrusion and the multiple water outlet holes 400 are located on the same straight line, and the protrusion and the strip hole 900 are located on the same straight line; the protrusion is circular, and the center of the circular protrusion and the center of the multiple water outlets are located on the same straight line; in other embodiments, the shape of the protrusion can be adjusted as needed, for example, the protrusion can be set as a rectangle, or the indicator 600 can be replaced with a groove formed on the outer wall of the water inlet pipe 200.

[0066] In this embodiment, the protrusion is a magnet, which is magnetically attracted to the water inlet pipe 200. Before installing the water inlet pipe 200, the protrusion is attracted to the water inlet pipe 200, and the center of the protrusion is aligned with the center of the multiple water outlets on the same straight line. Then, the water inlet pipe 200 is installed with the connecting pipe 300 and the housing 100. After installation, the protrusion can be removed from the water inlet pipe 200, which facilitates the reuse of the protrusion.

[0067] Combination Figures 1 to 4 The water tank also includes a connector 700, which is disposed on the outer wall of the tank body 100. The inlet pipe 200 and the connecting pipe 300 are integrally disposed. The connector 700 is used to insert into or detach from the inlet pipe 200 to fix or detach the inlet pipe 200 and the connecting pipe 300 from the tank body 100.

[0068] In this embodiment, the water inlet pipe 200 and the connecting pipe 300 are coaxially arranged, and the connector 700 is a sleeve. The sleeve is fixedly installed on the outer wall of the housing 100. The outer wall of the water inlet pipe 200 is provided with a threaded part. The water inlet pipe 200 is inserted into and threadedly connected to the sleeve through the threaded part, so that the water inlet pipe 200 can be fixed on the housing 100, thereby enabling the water inlet pipe 200 to drive the connecting pipe 300 to be installed in place.

[0069] In other embodiments, the water inlet pipe 200 can be inserted into and snapped into the sleeve, thereby fixing the water inlet pipe 200 to the housing 100. By setting a sealing ring between the water inlet pipe 200 and the sleeve, water leakage between the water inlet pipe 200 and the sleeve can be prevented.

[0070] In this application, by adopting the sleeve and threaded part, it is easy to fix the water inlet pipe 200 to the box 100, which improves the convenience of fixing the water inlet pipe 200 to the box 100. Furthermore, by adopting the bolt connection, the strength of fixing the water inlet pipe 200 to the box 100 is improved, thereby preventing the water inlet pipe 200 and the connecting pipe 300 from separating from the box 100.

[0071] See Figure 6 and Figure 7 , Figure 6 and Figure 7 The intersecting cross-sections in the image represent hot water. Figure 6 and Figure 7 The inclined profile line in the image represents cold water; see [link / reference]. Figure 6 When water enters through the inlet pipe 200, cold water flows towards the middle of the tank 100. After mixing with the existing hot water in the tank 100, the heated tap water flows towards the upper part of the tank 100. This causes warm water in the middle of the tank 100 and near the outlet pipe 500 to flow out through the outlet pipe 500. When the temperature of the outlet pipe 500 is lower than the mixed water temperature, the warm water time t1 is recorded. Multiplying the mixed water flow rate (i.e., the inlet water volume of the inlet pipe 200) by the warm water time t1 yields the warm water volume (i.e., the inlet water volume of the outlet pipe 500). Figure 6 Inside the tank 100, above the inlet pipe 200, a large amount of hot water exceeding the mixing temperature remains and cannot be discharged; see [link / reference]. Figure 7 When water enters through the inlet pipe 200, due to the multiple outlet holes 400, cold water can flow upwards towards the connecting pipe 300, thus mixing with the hot water above the connecting pipe 300, and then flowing towards the outlet pipe 500. When the temperature of the outlet pipe 500 is lower than the mixed water temperature, the warm water time t2 is recorded. Multiplying the mixed water flow rate (i.e., the water inlet flow rate of the inlet pipe 200) by the warm water time t2 yields the warm water flow rate (i.e., the water inlet flow rate of the outlet pipe 500). Figure 7 In the middle, there is no hot water with a temperature higher than the mixing temperature inside the tank 100 and above the connecting pipe 300, which obviously increases the hot water output of the tank 100.

[0072] Combination Figures 1 to 4 This application also provides a water heater, including a water heater body and a water tank of any of the above embodiments disposed on the water heater body. The water heater body is provided with a detection element 800, which is used to detect the water temperature above the connecting pipe 300.

[0073] In this embodiment, the water heater is a top-mounted solar water heater; in other embodiments, the water heater can also be replaced with a storage water heater or an instantaneous water heater.

[0074] In this embodiment, the detection element 800 includes a temperature sensor, which is mounted on the housing 100. A detection tube is mounted on the temperature sensor, and a temperature-sensing resistor is mounted at the end of the detection tube. The temperature-sensing resistor is located inside the housing 100 and above the connecting pipe 300. By using a temperature sensor, very accurate temperature data can be provided, and it has high stability and anti-interference ability. It can maintain measurement accuracy under different environmental conditions. By detecting the water temperature above the connecting pipe 300, it is easy to know whether the hot water stagnating above the connecting pipe 300 has been pushed to the location of the outlet pipe 500.

[0075] In other embodiments, the detection element 800 may also be replaced with an NTC thermistor.

[0076] The water heater provided in this application, by setting up a water tank, allows tap water to enter the connecting pipe 300 when it is input along the inlet pipe 200. The tap water can then be sprayed out through multiple outlet holes 400 set on the connecting pipe 300 toward the bottom wall of the tank 100. Since the water outlet area of ​​the multiple outlet holes 400 decreases sequentially from the inlet pipe 200 toward the outlet pipe 500, the water output of the multiple outlet holes 400 also decreases sequentially from the inlet pipe 200 toward the outlet pipe 500. This allows the outlet holes 400 to output more tap water and causes the tap water to move upward toward the connecting pipe 300. The hot water above the connecting pipe 300 moves toward the outlet pipe 500 under the pressure of the tap water, thus pushing the hot water above the connecting pipe 300 toward the outlet pipe 500. This prevents some hot water from stagnating above the connecting pipe 300 and indirectly increases the hot water output of the water tank.

[0077] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A water tank characterized by, The water tank comprises: a tank body (100); a water inlet pipe (200) connected to the lower part of one side of the tank body (100); a water outlet pipe (500) connected to the upper part of the other side of the tank body (100); a connecting pipe (300) arranged inside the tank body (100), the connecting pipe (300) being connected to the water inlet pipe (200), wherein the connecting pipe (300) is provided with a water outlet part, and the water outlet area of the water outlet part decreases in the direction from the water inlet pipe (200) to the water outlet pipe (500).

2. The water tank according to claim 1, characterized in that The water outlet part comprises a plurality of water outlet holes (400), and the water outlet area of the plurality of water outlet holes (400) decreases in the direction from the water inlet pipe (200) to the water outlet pipe (500).

3. The water tank according to claim 2, characterized in that The plurality of water outlet holes (400) form at least one group of water outlet holes, and the water outlet area of each water outlet hole (400) in each group of water outlet holes decreases in the direction from the water inlet pipe (200) to the water outlet pipe (500). The center of each group of water outlet holes is located on the same straight line, and the straight line is parallel to the axis of the connecting pipe (300).

4. The water tank according to claim 2, characterized in that The plurality of water outlet holes (400) are directed towards the bottom wall of the tank body (100).

5. The water tank according to claim 1, characterized in that The water outlet part comprises a strip-shaped hole (900), and the water outlet area of the strip-shaped hole (900) gradually decreases in the direction from the water inlet pipe (200) to the water outlet pipe (500).

6. The water tank according to claim 1, characterized in that One end of the connecting pipe (300) is connected to the water inlet pipe (200), and the other end of the connecting pipe (300) is closed.

7. The water tank according to any one of claims 1 to 6, characterized in that Further comprising an indicating member (600) arranged on the water inlet pipe (200), the indicating member (600) being used to indicate the position of the water outlet part in the tank body (100).

8. The water tank according to claim 7, characterized in that The indicating member (600) comprises a protrusion arranged on the outer wall of the water inlet pipe (200), and the protrusion is located on the same straight line as the water outlet part.

9. The water tank according to any one of claims 1 to 6, characterized in that Further comprising a connecting member (700) arranged on the outer wall of the tank body (100), the water inlet pipe (200) and the connecting pipe (300) being arranged integrally, and the connecting member (700) is used to plug or unplug the water inlet pipe (200) to fix or unfix the water inlet pipe (200) and the connecting pipe (300) to the tank body (100).

10. A water heater, characterized by The water tank is arranged on a water heater body, and the water heater body is provided with a detecting member (800) used to detect the water temperature above the connecting pipe (300).

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