Constant-temperature dual-mode water heater

Abstract

The utility model provides a constant-temperature dual-mode water heater. The constant-temperature dual-mode water heater comprises a preheating water storage assembly, a waterway control assembly and a constant-temperature control assembly. The preheating water storage assembly comprises a water storage part and a heating part, and the water storage part is provided with a water outlet end and a water inlet end; the water path control assembly comprises a water path constant-temperature control part and a water path pipeline part, the water path pipeline part comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a water mixing pipeline, and the water path constant-temperature control part is arranged on the water mixing pipeline; one end of the first pipeline, one end of the third pipeline and one end of the fourth pipeline are respectively communicated with the water mixing pipeline; the other end of the first pipeline communicates with a water source; one end of the second pipeline communicates with the first pipeline, and the other end communicates with the water inlet end; the other end of the third pipeline is communicated with the water outlet end; the other end of the fourth pipeline communicates with the constant-temperature control assembly. Through two times of temperature control in sequence, hot water with the temperature set by a user can be accurately output, water temperature control is accurate, the use experience of the user is improved, and meanwhile the water conveying pipeline is compact in layout and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to a constant temperature dual-mode water heater. Background Art

[0002] An electric water heater is a water heater that uses electricity as energy for heating. It is one of the three major water heaters along with gas water heaters and solar water heaters. Because it is easy to install and does not require additional connection to gas pipelines, more and more families choose to use electric water heaters.

[0003] At present, most electric water heaters store water in an inner tank first, and the water in the inner tank is heated by a heating body. When the user adjusts the water temperature, the electric water heater relies on changing the heating power of the heating body or mixing a certain proportion of tap water at the water outlet to achieve the effect of changing the output water temperature. However, since the temperature of tap water is not constant, it is impossible to accurately determine the proportion of tap water mixed in, the water temperature adjustment accuracy is poor, and the output hot water is not the temperature set by the user, affecting the user experience. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a constant temperature dual-mode water heater.

[0005] The present application discloses a constant temperature dual-mode water heater comprising: a preheating water storage component, a water circuit control component and a constant temperature control component; the preheating water storage component comprises a water storage part and a heating part arranged inside the water storage part, the water storage part is provided with a water outlet and a water inlet; the water circuit control component comprises a water circuit constant temperature control component and a water circuit pipeline component, the water circuit pipeline component comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a water mixing pipeline, the water circuit constant temperature control component is arranged in the water mixing pipeline; one end of the first pipeline, one end of the third pipeline and one end of the fourth pipeline are respectively connected to the water mixing pipeline ; The other end of the first pipe is connected to the water source; one end of the second pipe is connected to the first pipe, and the other end is connected to the water inlet; the other end of the third pipe is connected to the water outlet; the other end of the fourth pipe is connected to the constant temperature control component; the heating element heats the water in the water storage element to be preheated water, and the water circuit constant temperature control element changes the flow rate of the source water of the first pipe and the preheated water of the third pipe into the mixing water pipe, the source water and the preheated water flow into the mixing water pipe for primary mixing and temperature control, and the mixed water after primary temperature control flows into the constant temperature control component through the fourth pipe for secondary temperature control and outputs hot water.

[0006] Preferably, the water circuit constant temperature control component includes a water valve part and a water valve driving part, the driving end of the water valve driving part is connected to the water valve part, and the water valve part is arranged in the water mixing pipe.

[0007] Preferably, the water valve portion is a cylindrical valve core, a central hole of which is connected to the fourth pipe, and a side wall of the cylindrical valve core is provided with two valve holes, and the first pipe and the third pipe are respectively connected to the mixed water pipe through the two valve holes.

[0008] Preferably, the water valve driving part, the third pipe, the fourth pipe and the first pipe are sequentially arranged around the water mixing pipe, and the sequential connecting line of the four pipes is a rectangle.

[0009] Preferably, the water circuit constant temperature control component further includes a temperature sensor, and the temperature sensor is electrically connected to the water valve driving part.

[0010] Preferably, a water inlet valve is provided at the connection point between the second pipeline and the first pipeline.

[0011] Preferably, the water storage member is also provided with a sewage outlet.

[0012] Preferably, the constant temperature control component includes a constant temperature heating element and a constant temperature sensing element, the water inlet of the constant temperature heating element is connected to the fourth pipe, and the sensing end of the constant temperature sensing element is arranged on the fourth pipe.

[0013] Preferably, the constant temperature heating element and the constant temperature sensing element are respectively arranged on the same side of the water storage element.

[0014] Preferably, the constant temperature control component further includes a fifth pipe, one end of which is connected to the water outlet of the constant temperature heating element, and the other end of the fifth pipe is arranged adjacent to the other end of the first pipe.

[0015] The beneficial effects of the present application are: the heating element heats the water in the water storage element to preheat water, the water circuit constant temperature control element changes the flow rate of the source water in the first pipe and the preheated water in the third pipe into the mixing water pipe, the source water and the preheated water flow into the mixing water pipe for primary mixing and temperature control, the mixed water after primary temperature control flows into the constant temperature control component through the fourth pipe for secondary temperature control and outputs hot water, the hot water output by the present application has undergone two temperature controls in succession, and can accurately output hot water according to the temperature set by the user, the water temperature control is precise, and the user experience is improved, while the layout of each water supply pipe is compact, the space utilization rate is high, and the space occupied is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of a constant temperature dual-mode water heater in an embodiment;

[0018] Figure 2 Schematic diagram of the internal structure of the water storage component in the embodiment;

[0019] Figure 3 It is a schematic diagram of the structure of the water circuit control component and the constant temperature control component in the embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of the waterway control assembly in the embodiment;

[0021] Figure 5 Schematic diagram of the structure of the water valve part in the embodiment.

[0022] Reference numerals:

[0023] 1. Preheating water storage component; 11. Water storage component; 111. Water outlet; 112. Water inlet; 113. Drain outlet; 12. Heating component; 2. Water circuit control component; 21. Water circuit constant temperature control component; 211. Water valve part; 2111. Valve hole; 2112. Center hole; 212. Water valve drive part; 22. Water circuit pipeline component; 221. First pipeline; 222. Second pipeline; 223. Third pipeline; 224. Fourth pipeline; 225. Mixing water pipeline; 3. Constant temperature control component; 31. Constant temperature heating component; 32. Constant temperature sensing component; 33. Fifth pipeline. DETAILED DESCRIPTION

[0024] The following will disclose multiple embodiments of the present application with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present application. In other words, in some embodiments of the present application, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0025] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, in the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0027] In order to further understand the application content, features and effects of the present application, the following embodiments are cited and described in detail with reference to the accompanying drawings.

[0028] Reference Figure 1-3 , Figure 1 is a structural schematic diagram of a constant temperature dual-mode water heater in an embodiment, Figure 2 This is a schematic diagram of the internal structure of the water storage component in the embodiment. Figure 3 : is a schematic diagram of the structure of the water circuit control component and the constant temperature control component in the embodiment. The constant temperature dual-mode water heater in this embodiment includes a preheating water storage component 1, a water circuit control component 2 and a constant temperature control component 3. The preheating water storage component 1 includes a water storage component 11 and a heating component 12 arranged inside the water storage component 11. The water storage component 11 is provided with a water outlet 111 and a water inlet 112. The water circuit control component 2 includes a water circuit constant temperature control component 21 and a water circuit pipeline component 22. The water circuit pipeline component 22 includes a first pipeline 221, a second pipeline 222, a third pipeline 223, a fourth pipeline 224 and a water mixing pipeline 225. The water circuit constant temperature control component 21 is arranged in the water mixing pipeline 225. One end of the first pipeline 221, one end of the third pipeline 223 and one end of the fourth pipeline 224 are respectively connected to the water mixing pipeline 225. The other end of the first pipeline 221 is connected to a water source. One end of the second pipeline 222 is connected to the first pipeline 221, and the other end is connected to the water inlet 112. The other end of the third pipe 223 is connected to the water outlet 111. The other end of the fourth pipe 224 is connected to the thermostatic control component 3. The heating element 12 heats the water in the water storage element 11 to preheat water, and the water circuit thermostatic control component 21 changes the flow rate of the source water in the first pipe 221 and the preheated water in the third pipe 223 flowing into the mixing water pipe 225. The source water and the preheated water flow into the mixing water pipe 225 for primary mixing and temperature control. After the primary temperature control, the mixed water flows into the thermostatic control component 3 through the fourth pipe 224 for secondary temperature control and outputs hot water.

[0029] The constant temperature dual-mode water heater in this embodiment can be used for bathing in a family bathroom. In specific application, water is stored in the water storage part 11, and the heating part 12 preliminarily heats the water in the water storage part 11. The preliminarily heated water flows into the mixing water pipe 225 through the third pipe 223, and the cold water from the tap flows into the mixing water pipe 225 through the first pipe 221. The waterway constant temperature control part 21 adjusts the ratio of the first pipe 221 and the third pipe 223 flowing into the mixing water pipe 225 according to the temperature preset by the user. The water is mixed and cooled in the mixing water pipe 225 to reach the preset temperature, that is, the first temperature control is performed. The water after the first temperature control flows into the constant temperature control component 3 through the fourth pipe 224 for secondary heating and temperature control, and then outputs hot water for the user to use. After two temperature controls, the water output by this embodiment can accurately output hot water according to the temperature set by the user, and the water temperature control is accurate, which improves the user experience.

[0030] Re-reference Figure 1Preferably, the water storage part 11 is also provided with a sewage outlet 113. In specific applications, the water storage part 11 is a water storage tank, the heating part 12 is a heating tube, and the cold water flows into the tank through the second pipe 222 through the water inlet end 112, and the heating tube heats the water in the tank. Since the tap water contains certain impurities and metal ions, the water in the tank will produce impurity precipitation after long-term and multiple heating. Through the setting of the sewage outlet 113, the precipitation accumulated in the tank can be regularly discharged to improve the heating efficiency of the tank and the cleanliness of the water. Specifically, the first pipe 221 is connected to the mixing water pipe 225 and the external tap water faucet respectively. One end of the second pipe 222 is connected to the water inlet end 112, and the other end is connected to the first pipe 221. In this way, after the tap water flows into the first pipe 221, the water path will be diverted, and most of the water in the first pipe 221 flows into the tank through the second pipe 222, and the remaining part flows into the mixing water pipe 225 to mix with the hot water for temperature control.

[0031] Refer to Figure 4 , Figure 4 2 is a schematic diagram of the structure of the water circuit control assembly in the embodiment. Preferably, the water circuit constant temperature control component 21 includes a water valve part 211 and a water valve driving part 212. The driving end of the water valve driving part 212 is connected to the water valve part 211. The water valve part 211 is arranged in the water mixing pipe 225. In specific application, cold tap water flows into the water mixing pipe 225 through the first pipe 221, and hot water heated by the heating pipe flows into the water mixing pipe 225 through the third pipe 223. The water valve driving part 212 drives the water valve part 211 to rotate, so that the flow rate of the first pipe 221 and the third pipe 223 flowing into the water mixing pipe 225 changes, that is, a certain proportion of cold water and hot water are mixed in the water mixing pipe 225 according to the temperature set by the user, so as to obtain hot water of a preset temperature. It should be particularly noted that the water circuit constant temperature control component 21 also includes a temperature sensor, and the temperature sensor is electrically connected to the water valve driving part 212. There are two temperature sensors, one of which is arranged in the inner tank for detecting the temperature of the water in the inner tank, and the other is arranged in the first pipe 221 for detecting the temperature of the cold water in the faucet. The water valve driving part 212 is also provided with a temperature controller correspondingly, in which a temperature control module is integrated. The temperature controller is electrically connected to the two temperature sensors respectively. The temperature controller controls the rotation angle of the water valve part 211 through the temperature information transmitted by the temperature sensor, thereby changing the flow rate of the first pipe 221 and the third pipe 223 flowing into the mixing water pipe 225, so that the temperature of the water in the mixing water pipe 225 reaches a preset temperature after mixing.

[0032] Refer to Figure 5 , Figure 52 is a schematic diagram of the structure of the water valve part in the embodiment. Preferably, the water valve part 211 has a cylindrical valve core, whose central hole 2112 is connected to the fourth pipe 224, and the side wall of the cylindrical valve core is provided with two valve holes 2111. The first pipe 221 and the third pipe 223 are respectively connected to the mixed water pipe 225 through the two valve holes 2111. In specific application, the first pipe 221 and the third pipe 223 are respectively arranged at opposite ends of the mixed water pipe 225, and the connecting openings thereof and the mixed water pipe 225 are located at the same horizontal height, that is, the first pipe 221, the third pipe 223 and the mixed water pipe 225 are at the same horizontal height. A part of the pipe opening of the first pipe 221 contacts the outer wall of the valve core, and the other part is connected to the central hole 2112 through one of the valve holes 2111. A portion of the pipe opening of the third pipe 223 contacts the outer wall of the valve core, and the other portion is connected to the center hole 2112 through another valve hole 2111. It should be particularly noted that the diameter of the valve hole 2111 is smaller than the diameters of the first pipe 221 and the third pipe 223, and the two valve holes 2111 are located at a position slightly below the middle height of the valve core, so that the two valve holes 2111 do not completely connect with the first pipe 221 and the third pipe 223 at the same time, that is, as the valve core rotates, the connecting area between the first pipe 221 and the valve hole 2111 decreases, and the connecting area between the third pipe 223 and the valve hole 2111 increases. Similarly, if the connecting area between the first pipe 221 and the valve hole 2111 increases, the connecting area between the third pipe 223 and the valve hole 2111 will decrease. Specifically, as the valve core rotates, the ratio of cold water and hot water flowing into the water mixing pipe 225 also changes, and the water valve driving unit 212 synchronously drives the valve core to rotate to a suitable angle according to the temperature sensors in the inner tank and the first pipe 221 and the temperature set by the user, so as to mix hot water with accurate temperature. Specifically, the water valve driving unit 212 is an existing motor, and its driving end is connected to the valve core.

[0033] Re-reference Figure 3 Preferably, a water inlet valve is provided at the connection between the second pipe 222 and the first pipe 221. In specific applications, when tap water flows into the mixing water pipe 225 through the first pipe 221, the water inlet valve can be opened or closed synchronously. In the open state, part of the tap water enters the mixing water pipe 225 for mixing water temperature control, and the other part of the tap water flows into the inner tank through the second pipe 222 for water storage and heating. In this way, the water in the inner tank can be kept sufficient at all times, ensuring that the user can use it for a long time, thereby improving the user experience.

[0034] Re-reference Figure 3-4Preferably, the water valve driving part 212, the third pipe 223, the fourth pipe 224 and the first pipe 221 are sequentially arranged around the water mixing pipe 225, and the connecting line of the four is rectangular. In specific application, the water valve driving part 212, the third pipe 223, the fourth pipe 224 and the first pipe 221 are respectively arranged around the water mixing pipe 225, the other end of the first pipe 221 extends downward to connect with the tap, and the other end of the second pipe 222 extends upward to connect with the water inlet end 112, that is, the water storage part 11 is arranged above the water circuit control component 2, and many pipes are concentrated in the bottom area of ​​the water storage part 11. The pipe arrangement is reasonable, which improves the space utilization rate and saves the installation space of the bathroom.

[0035] Re-reference Figure 2-3 Preferably, the constant temperature control component 3 includes a constant temperature heating element 31 and a constant temperature sensing element 32 , the water inlet of the constant temperature heating element 31 is connected to the fourth pipe 224 , and the sensing end of the constant temperature sensing element 32 is arranged on the fourth pipe 224 . In specific application, the water after the first temperature control flows into the constant temperature heating element 31 through the fourth pipe 224 for secondary heating and temperature control and outputs hot water of the temperature set by the user. After two temperature controls, not only can the temperature control be more accurate and the accuracy of the output hot water temperature be improved, but also a large water output can be ensured, thereby improving the user experience. The constant temperature heating element 31 in this embodiment is an instant heating body, and the constant temperature sensing element 32 is a temperature sensor, which is electrically connected to the instant heating body. At the same time, the temperature of the water in the fourth pipe 224 is measured, and the temperature information is transmitted to the instant heating body. The instant heating body performs a second heating and temperature control after comparing and analyzing the temperature information with the user's preset temperature. Since the first temperature control has been carried out in the mixed water pipe 225, the temperature of the water in the fourth pipe 224 is relatively close to the user's preset temperature. In this way, the instant heating body only needs to perform slight heating and temperature control, which not only ensures the accuracy of the final output hot water temperature, but also ensures a large water output of hot water.

[0036] Re-reference Figure 2-3 Preferably, the constant temperature heating element 31 and the constant temperature sensing element 32 are respectively arranged on the same side of the water storage element 11. Since the constant temperature heating element 31 has a certain volume, arranging it on one side of the water storage element 11 will not affect the pipeline arrangement of many pipelines, making the spatial layout of this embodiment more reasonable and improving the space utilization rate. At the same time, the constant temperature sensing element 32 is arranged adjacent to the constant temperature heating element 31, specifically close to the connection between the fourth pipeline 224 and the constant temperature sensing element 32, so as to ensure that the temperature detected by the constant temperature sensing element 32 is exactly the temperature of water entering the constant temperature heating element 31 for secondary temperature control, thereby improving the accuracy of the detection, thereby improving the accuracy of the water temperature output by this embodiment.

[0037] Re-reference Figure 2-3Preferably, the thermostatic control assembly 3 further includes a fifth pipe 33, one end of which is connected to the water outlet of the thermostatic heating element 31, and the other end is arranged adjacent to the other end of the first pipe 221. In specific applications, the fifth pipe 33 is a water outlet pipe, and the water after the secondary temperature control of the thermostatic heating element 31 flows into the fifth pipe 33. At the same time, the other end of the fifth pipe 33 extends toward the mixing water pipe 225 and is stored adjacent to the first pipe 221, so that the user can install a water outlet shower at the other end of the fifth pipe 33 for use. In this way, the pipe layout of this embodiment is compact, the space utilization rate is high, and the installation space of the bathroom can be saved.

[0038] Re-reference Figure 1-4 The working process of the constant temperature dual-mode water heater in this embodiment is as follows: tap water enters from the first pipe 221, a part of the tap water enters the water storage part 11 through the second pipe 222, and the other part enters the mixing water pipe 225. After the water in the water storage part 11 is heated by the heating element 12, it flows into the mixing water pipe through the third pipe 223 and mixes with the water flowing into the mixing water pipe 225 through the first pipe 221. The waterway constant temperature control element 21 adjusts the ratio of the first pipe 221 and the third pipe 223 flowing into the mixing water pipe 225 according to the temperature preset by the user to achieve the first temperature control. The water after the first temperature control flows into the constant temperature heating element 31 through the fourth pipe 224. The constant temperature heating element 31 performs the second temperature control on the water and outputs the water through the fifth pipe 33 for the user to use.

[0039] To summarize, the heating element heats the water in the water storage element to preheat water, and the water circuit constant temperature control element changes the flow rate of the source water in the first pipe and the preheated water in the third pipe into the mixing water pipe. The source water and the preheated water flow into the mixing water pipe for a mixed temperature control. The mixed water after the first temperature control flows into the constant temperature control component through the fourth pipe for a second temperature control and outputs hot water. The hot water output by this embodiment has undergone two temperature controls in succession, and can accurately output hot water according to the temperature set by the user. The water temperature control is precise, which improves the user experience. At the same time, the layout of each water supply pipe is compact, the space utilization rate is high, and the space occupied is small.

[0040] The above is only the implementation mode of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A constant temperature dual-mode water heater, characterized in that: include: A preheating water storage assembly (1) comprises a water storage element (11) and a heating element (12) arranged inside the water storage element (11), wherein the water storage element (11) is provided with a water outlet (111) and a water inlet (112); A water circuit control component (2), comprising a water circuit constant temperature control component (21) and a water circuit pipeline component (22); the water circuit pipeline component (22) comprises a first pipeline (221), a second pipeline (222), a third pipeline (223), a fourth pipeline (224) and a water mixing pipeline (225); the water circuit constant temperature control component (21) is arranged on the water mixing pipeline (225); one end of the first pipeline (221), one end of the third pipeline (223) and one end of the fourth pipeline (224) are respectively connected to the water mixing pipeline (225); the other end of the first pipeline (221) is connected to a water source; one end of the second pipeline (222) is connected to the first pipeline (221), and the other end is connected to the water inlet (112); the other end of the third pipeline (223) is connected to the water outlet (111); the other end of the fourth pipeline (224) is connected to the constant temperature control component (3); The heating element (12) heats the water in the water storage element (11) to obtain preheated water. The water circuit constant temperature control element (21) changes the flow rate of the source water in the first pipe (221) and the preheated water in the third pipe (223) into the mixing water pipe (225). The source water and the preheated water flow into the mixing water pipe (225) for primary mixing and temperature control. After the primary temperature control, the mixed water flows into the constant temperature control component (3) through the fourth pipe (224) for secondary temperature control and outputs hot water.

2. The constant temperature dual-mode water heater according to claim 1, characterized in that: The water circuit constant temperature control component (21) comprises a water valve part (211) and a water valve driving part (212), wherein a driving end of the water valve driving part (212) is connected to the water valve part (211), and the water valve part (211) is arranged in the water mixing pipe (225).

3. The constant temperature dual-mode water heater according to claim 2, characterized in that: The water valve portion (211) is a cylindrical valve core, a central hole (2112) of which is connected to the fourth pipe (224), and a side wall of the cylindrical valve core is provided with two valve holes (2111), and the first pipe (221) and the third pipe (223) are respectively connected to the mixed water pipe (225) through the two valve holes (2111).

4. The constant temperature dual-mode water heater according to claim 3, characterized in that: The water valve driving part (212), the third pipe (223), the fourth pipe (224) and the first pipe (221) are sequentially arranged around the water mixing pipe (225), and a line connecting the four in sequence forms a rectangle.

5. The constant temperature dual-mode water heater according to claim 4, characterized in that: The water circuit constant temperature control component (21) further comprises a temperature sensor, and the temperature sensor is electrically connected to the water valve driving unit (212).

6. The constant temperature dual-mode water heater according to claim 1, characterized in that: A water inlet valve is provided at the point where the second pipeline (222) is connected to the first pipeline (221).

7. The constant temperature dual-mode water heater according to claim 1, characterized in that: The water storage member (11) is also provided with a sewage outlet (113).

8. The constant temperature dual-mode water heater according to claim 1, characterized in that: The constant temperature control component (3) comprises a constant temperature heating element (31) and a constant temperature sensing element (32); the water inlet of the constant temperature heating element (31) is connected to the fourth pipe (224); and the sensing end of the constant temperature sensing element (32) is arranged on the fourth pipe (224).

9. The constant temperature dual-mode water heater according to claim 8, characterized in that: The constant temperature heating element (31) and the constant temperature sensing element (32) are respectively arranged on the same side of the water storage element (11).

10. The constant temperature dual-mode water heater according to claim 9, characterized in that: The thermostatic control component (3) further comprises a fifth pipe (33), one end of which is connected to the water outlet of the thermostatic heating element (31), and the other end of which is arranged adjacent to the other end of the first pipe (221).

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