Energy storage instant electric water heater

Abstract

This utility model provides an energy storage instantaneous electric water heater, belonging to the technical field of household appliances. The energy storage instantaneous electric water heater includes an energy storage tank, a circulation pipeline, and a heater. The energy storage tank is filled with a phase change material. A heat exchanger is installed on the circulation pipeline, located inside the energy storage tank. The heater is installed on the circulation pipeline. When in use mode, the heat stored in the phase change material heats the water through the heat exchanger and / or the heater, resulting in more heated water output. When in energy storage mode, the heater heats the water, and the heated water is transported to the energy storage tank. The heat exchanger stores the heat of the heated water in the phase change material. Users can store energy during off-peak hours and heat it when needed, significantly reducing electricity costs.

Description

Technical Field

[0001] This utility model belongs to the field of home appliance technology, specifically relating to an energy storage instantaneous electric water heater. Background Technology

[0002] Traditional instant electric water heaters use water as the heat storage medium. Due to the low specific heat capacity of water, the amount of hot water is limited. When a large amount of hot water is needed, the instant electric water heater cannot provide enough hot water, resulting in both the water temperature and the amount of hot water failing to meet the user's needs. Utility Model Content

[0003] In view of this, in order to solve the problems in the prior art, this utility model proposes an energy storage instantaneous electric water heater. The technical problem to be solved is: how to output more hot water and reduce the user's electricity cost.

[0004] This utility model solves the above problems through the following technical means:

[0005] A storage-type instantaneous electric water heater, comprising:

[0006] An energy storage box, wherein the energy storage box is filled with a phase change material;

[0007] A circulation pipeline is provided, and a heat exchanger is installed on the circulation pipeline, which is located inside the energy storage tank;

[0008] A heater, wherein the heater is disposed on the circulation pipeline;

[0009] When in water use mode, the heat stored in the phase change material heats the cold water through the heat exchanger and / or the heater, so as to output more heated water;

[0010] When in energy storage mode, the heater heats cold water, and the heated water is transported to the energy storage tank. The heat exchanger stores the heat of the heated water in the phase change material.

[0011] When this energy storage instantaneous electric water heater is in use, cold water is heated simultaneously by both the heater and the energy storage tank. In this mode, the heater primarily heats the cold water, while the energy storage tank provides supplementary heating, resulting in a higher output of hot water. When the phase change material reaches the outlet water temperature, the heater is shut off, allowing all the cold water to be heated through the energy storage tank, ensuring a higher output of hot water without the need for the heater, thus significantly saving energy. In energy storage mode, the heating element heats the cold water, which is then transported to the energy storage tank. The heat exchanger stores the heat in the phase change material, which absorbs and stores the heat. When the cold water needs to be reheated, it is heated through the energy storage tank. Users can store energy during off-peak hours and reheat it when needed, significantly reducing electricity costs.

[0012] In the above-mentioned energy storage instant electric water heater, the heat exchanger includes multiple straight pipe sections and multiple connecting pipe sections. The multiple straight pipe sections extend horizontally and are arranged sequentially at intervals in the vertical direction. Each pair of adjacent straight pipe sections are connected and interconnected through the connecting pipe sections.

[0013] In the above-mentioned energy storage instantaneous electric water heater, the energy storage instantaneous electric water heater further includes an inlet pipe section and an outlet pipe section, both of which are connected to the circulation pipeline. The inlet pipe section is used to input cold water, and the outlet pipe section is used to output heated water.

[0014] In the above-mentioned energy storage instantaneous electric water heater, the circulation pipeline includes a first pipe section, a second pipe section, a third pipe section, a fourth pipe section, and a fifth pipe section;

[0015] One end of the first pipe section is connected to the water inlet pipe section, and the other end of the first pipe section is connected to one end of the heat exchanger.

[0016] One end of the second pipe section is connected to the water inlet pipe section, and the other end of the second pipe section is connected to the water inlet of the heater;

[0017] One end of the third pipe section is connected to the end of the heat exchanger away from the first pipe section, and the other end of the third pipe section is connected to the second pipe section;

[0018] One end of the fourth pipe section is connected to the third pipe section, and the other end of the fourth pipe section is connected to the outlet pipe section;

[0019] One end of the fifth pipe section is connected to the water outlet of the heater, and the other end of the fifth pipe section is connected to the fourth pipe section.

[0020] In the above-mentioned energy storage instantaneous electric water heater, the first pipe section and the second pipe section are connected to the inlet pipe section through a water flow servo.

[0021] In the above-mentioned energy storage instant electric water heater, a first solenoid valve is installed on the fourth pipe section, the connection between the fourth pipe section and the third pipe section is the first connection point, the connection between the fifth pipe section and the fourth pipe section is the second connection point, and the first solenoid valve is located between the first connection point and the second connection point.

[0022] A second solenoid valve is installed on the third pipe section, and the connection between the third pipe section and the second pipe section is the third connection point. The second solenoid valve is located between the first connection point and the third connection point.

[0023] In the above-mentioned energy storage instantaneous electric water heater, a first angle valve is provided on the water inlet pipe section, and the first angle valve is used to control the water in the water inlet pipe section.

[0024] The outlet pipe section is equipped with a second angle valve, which is used to control the water flow in the outlet pipe section.

[0025] In the above-mentioned energy storage instantaneous electric water heater, a circulation pump is installed on the second pipe section. When in energy storage mode, the circulation pump is used to transport the water heated by the heater to the energy storage tank.

[0026] In the aforementioned energy storage instantaneous electric water heater, temperature probes for detecting water temperature are installed on the first pipe section, the third pipe section, and the outlet pipe section.

[0027] In the aforementioned energy storage instantaneous electric water heater, a water flow sensor for detecting water flow is installed on the inlet pipe section.

[0028] Compared with the prior art, the technical effects of this utility model are as follows:

[0029] This utility model's energy storage instantaneous electric water heater, when in use, heats cold water simultaneously through both a heater and an energy storage tank. The heater primarily heats the cold water, while the energy storage tank provides supplementary heating, resulting in a higher output of hot water. When the phase change material reaches the outlet water temperature, the heater is shut off, allowing all the cold water to be heated through the energy storage tank, ensuring a higher hot water output without the need for a heater, significantly saving energy. In energy storage mode, the heating element heats the cold water, which is then transported to the energy storage tank. A heat exchanger stores the heat in the phase change material, which absorbs and stores the heat. When reheating is needed, the cold water is heated through the energy storage tank. Users can store energy during off-peak hours and reheat it when needed, greatly reducing electricity costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the water usage conditions of an energy storage instantaneous electric water heater.

[0031] Figure 2 This is a schematic diagram of an energy storage instantaneous electric water heater in energy storage mode.

[0032] The meanings of the reference numerals in the attached figures are as follows:

[0033] 1. Energy storage tank; 2. Circulation pipeline; 21. Heat exchanger; 211. Straight pipe section; 212. Connecting pipe section; 22. First pipe section; 23. Second pipe section; 231. Circulation pump; 24. Third pipe section; 241. Second solenoid valve; 242. Third connection point; 25. Fourth pipe section; 251. First solenoid valve; 252. First connection point; 253. Second connection point; 26. Fifth pipe section; 3. Heater; 4. Inlet pipe section; 41. First angle valve; 42. Water flow sensor; 43. Pressure relief valve; 5. Outlet pipe section; 51. Second angle valve; 6. Water flow servo; 7. Temperature probe. Detailed Implementation

[0034] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] like Figure 1 and 2 As shown, this energy storage instantaneous electric water heater includes an energy storage tank 1, a circulation pipeline 2, and a heater 3. The energy storage tank 1 is filled with a phase change material. A heat exchanger 21 is installed on the circulation pipeline 2, and the heat exchanger 21 is located inside the energy storage tank 1. The heater 3 is installed on the circulation pipeline 2. When in water use mode, the heat stored in the phase change material heats cold water through the heat exchanger 21 and / or the heater 3, so as to output more heated water. When in energy storage mode, the heater 3 heats cold water, and the heated water is transported to the energy storage tank 1. The heat exchanger 21 stores the heat of the heated water in the phase change material.

[0040] In this embodiment, a heat exchanger 21 is installed on the circulation pipeline 2. The heat exchanger 21 is located inside the energy storage tank 1, which is filled with phase change material. The heat exchanger 21 transfers the heat from the phase change material to the water in the circulation pipeline 2, allowing the energy storage tank 1 to heat the water. Alternatively, the heat from the water in the circulation pipeline 2 can be stored in the phase change material through the heat exchanger 21, thus storing energy in the energy storage tank 1. Specifically, when in use, i.e., when hot water is needed, cold water is heated by both the heater 3 and the energy storage tank 1, achieving simultaneous heating of cold water by both. Preferably, the cold water heated by the heater 3 is the primary source, while the energy storage tank 1 serves as a supplementary source, resulting in a higher output of hot water. When the phase change material reaches the outlet water temperature, the heater 3 is turned off, allowing all the cold water to be heated by the energy storage tank 1, ensuring a higher output of hot water without requiring the heater 3 to be powered on, thus significantly saving energy. When in energy storage mode, i.e. during off-peak hours, the heating element is energized to heat cold water. The heated water is then transported to the energy storage tank 1. The heat exchanger 21 stores the heat of the heated water in the phase change material. The phase change material absorbs and stores the heat. When the cold water needs to be heated again, it is heated through the energy storage tank 1. Users can store energy during off-peak hours and heat it through the energy storage tank 1 when needed, which greatly reduces the user's electricity costs.

[0041] As one embodiment, heater 3 is a cast aluminum / film heating element. This type of heating element has good thermal conductivity and heat dissipation, reduces energy waste during the heating process, has higher energy utilization efficiency, and helps to save energy and reduce consumption.

[0042] It should be noted that, Figure 1 and 2 The direction of the middle arrow indicates the direction of the water flow.

[0043] like Figure 1 and 2 As shown, the heat exchanger 21 includes multiple straight pipe sections 211 and multiple connecting pipe sections 212. The multiple straight pipe sections 211 extend horizontally and are arranged sequentially at intervals in the vertical direction. Each pair of adjacent straight pipe sections 211 are connected and interconnected through the connecting pipe section 212.

[0044] In this embodiment, multiple straight pipe sections 211 extend horizontally and are arranged sequentially at intervals in the vertical direction. Each pair of adjacent straight pipe sections 211 are connected and interconnected by a connecting pipe section 212. Water can flow within the straight pipe sections 211 and the connecting pipe section 212. This arrangement maximizes the contact area between the heat exchanger 21 and the phase change material. Thus, during the heating process, the heat exchanger 21 can fully contact the phase change material layer, allowing it to quickly and comprehensively conduct heat into the phase change material layer to achieve energy storage in the energy storage tank 1, or the heat in the phase change material can be conducted into the heat exchanger 21 to heat the water, resulting in a better heat exchange effect.

[0045] like Figure 1 and 2 As shown, the energy storage instant electric water heater also includes an inlet pipe section 4 and an outlet pipe section 5. Both the inlet pipe section 4 and the outlet pipe section 5 are connected to the circulation pipe 2. The inlet pipe section 4 is used to input cold water, and the outlet pipe section 5 is used to output heated water.

[0046] In this embodiment, both the inlet pipe section 4 and the outlet pipe section 5 are connected to the circulation pipe 2. Cold water is input into the inlet pipe section 4, and the cold water enters the circulation pipe energy storage tank 1 and / or heater 3 to heat the cold water. The heated water is then input through the outlet pipe section 5, thus completing the process of cold water input heating and hot water output for use.

[0047] like Figure 1 and 2 As shown, the circulation pipeline 2 includes a first pipe section 22, a second pipe section 23, a third pipe section 24, a fourth pipe section 25, and a fifth pipe section 26. One end of the first pipe section 22 is connected to the inlet pipe section 4, and the other end of the first pipe section 22 is connected to one end of the heat exchanger 21. One end of the second pipe section 23 is connected to the inlet pipe section, and the other end of the second pipe section 23 is connected to the inlet end of the heater 3. One end of the third pipe section 24 is connected to the end of the heat exchanger 21 away from the first pipe section 22, and the other end of the third pipe section 24 is connected to the second pipe section 23. One end of the fourth pipe section 25 is connected to the third pipe section 24, and the other end of the fourth pipe section 25 is connected to the outlet pipe section 5. One end of the fifth pipe section 26 is connected to the outlet end of the heater 3, and the other end of the fifth pipe section 26 is connected to the fourth pipe section 25.

[0048] In this embodiment, one end of the first pipe section 22 is connected to the inlet pipe section 4, and the other end of the first pipe section 22 is connected to one end of the heat exchanger 21. Cold water is input into the inlet pipe section 4 and enters the heat exchanger 21 through the first pipe section 22. When in use, the phase change material in the energy storage tank 1 conducts heat to the heat exchanger 21, thereby heating the cold water. One end of the second pipe section 23 is connected to the inlet pipe section 4, and the other end of the second pipe section 23 is connected to the inlet end of the heater 3. Cold water is input into the inlet pipe section 4 and enters the heater 3 through the second pipe section 23. The heater 3 heats the cold water, and the heated water can be output for use through the outlet pipe section 5, or, in energy storage mode, transported to the energy storage tank 1, where the heat is stored in the phase change material through the heat exchanger 21. One end of the third pipe section 24 is connected to the end of the heat exchanger 21 away from the first pipe section 22, and the other end of the third pipe section 24 is connected to the second pipe section 23. When the phase change material in the energy storage tank 1 fails to heat the cold water to the user's set temperature during water use, the water heated by the energy storage tank 1 enters the second pipe section 23 through the third pipe section 24, and then enters the heater 3 for further heating. The heating element and the phase change material are heated simultaneously, reducing the user's electricity costs. One end of the fourth pipe section 25 is connected to the third pipe section 24, and the other end of the fourth pipe section 25 is connected to the outlet pipe section 5. The water heated by the phase change material in the energy storage tank 1 can flow through the third pipe section 24 to the fourth pipe section 25, and then through the fourth pipe section 25 to the outlet pipe section 5, thus achieving hot water output. One end of the fifth pipe section 26 is connected to the outlet of the heater 3, and the other end of the fifth pipe section 26 is connected to the fourth pipe section 25. The water heated by the heater 3 flows to the fifth pipe section 26, then to the fourth pipe section 25, and then through the fourth pipe section 25 to the outlet pipe section 5, thus achieving hot water output.

[0049] like Figure 1 and 2 As shown, the first pipe section 22 and the second pipe section 23 are connected to the inlet pipe section 4 via the water volume servo 6.

[0050] In this embodiment, the first pipe section 22 and the second pipe section 23 are connected to the inlet pipe section 4 through the water flow servo 6. Cold water enters the inlet pipe section 4 and is distributed to the first pipe section 22 and the second pipe section 23 by the water flow servo 6. The water entering the first pipe section 22 is heated by the energy storage tank 1, and the water entering the second pipe section 23 is heated by the heater 3. The water flow servo 6 realizes the function of cold water distribution.

[0051] like Figure 1 and 2As shown, a first solenoid valve 251 is provided on the fourth pipe segment 25, and the connection between the fourth pipe segment 25 and the third pipe segment 24 is the first connection point 252. The connection between the fifth pipe segment 26 and the fourth pipe segment 25 is the second connection point 253. The first solenoid valve 251 is located between the first connection point 252 and the second connection point 253. A second solenoid valve 241 is provided on the third pipe segment 24, and the connection between the third pipe segment 24 and the second pipe segment 23 is the third connection point 242. The second solenoid valve 241 is located between the first connection point 252 and the third connection point 242.

[0052] In this embodiment, a first solenoid valve 251 is installed on the fourth pipe section 25, located between the first connection point 252 and the second connection point 253. A second solenoid valve 241 is installed on the third pipe section 24, located between the first connection point 252 and the third connection point 242. When in water use mode, the heater 3 is started first to heat the cold water. Since the cold water heated by the energy storage tank 1 does not reach the user's preset temperature, the first solenoid valve 251 is closed and the second solenoid valve 241 is opened. The warm water heated by the energy storage tank 1 enters the heater 3 for heating, achieving the purpose of heating by both the energy storage tank 1 and the heater 3. When the water heated by the energy storage tank 1 reaches the user's preset temperature, the first solenoid valve 251 is opened and the second solenoid valve 241 is closed. All the cold water is heated through the energy storage tank 1, thereby reducing the user's electricity costs.

[0053] like Figure 1 and 2 As shown, a first angle valve 41 is provided on the inlet pipe section 4, which is used to control the water in the inlet pipe section 4; a second angle valve 51 is provided on the outlet pipe section 5, which is used to control the water in the outlet pipe section 5.

[0054] In this embodiment, the first angle valve 41 controls the water in the inlet pipe section 4, and the second angle valve 51 controls the water in the outlet pipe section 5. When in energy storage mode, the second angle valve 51 is closed, the second solenoid valve 241 is closed, the first angle valve 41 is opened, and the first solenoid valve 251 is opened. Cold water enters the heater 3 for heating, and the heated water enters the third pipe section 24 through the fourth pipe section 25, and then enters the heat exchanger 21, thereby transferring the heat to the phase change material to store heat, realizing energy storage during off-peak hours and reducing the user's electricity costs.

[0055] like Figure 1 and 2 As shown, a circulation pump 231 is installed on the second pipe section 23. When in energy storage mode, the circulation pump 231 is used to transport the water heated by the heater 3 to the energy storage tank 1.

[0056] In this embodiment, by setting a circulation pump 231 on the second pipe section 23, the circulation pump 231 transports the water heated by the heater 3 to the energy storage tank 1, so that the heat exchanger 21 can transfer the heat of the heated water to the phase change material, which is convenient for energy storage during off-peak hours and reduces the user's electricity cost.

[0057] like Figure 1 and 2 As shown, temperature probes 7 for detecting water temperature are installed on the first pipe section 22, the third pipe section 24 and the outlet pipe section 5.

[0058] In this implementation, the temperature probe 7 on the first pipe section 22 can detect the temperature of the water entering the energy storage tank 1; the temperature probe 7 on the outlet pipe section 5 can detect the temperature of the hot water output; the temperature probe 7 on the third pipe section 24 can detect the temperature of the water after it has been heated by the energy storage tank 1. When the temperature detected by the temperature probe 7 does not reach the user's preset temperature, the first solenoid valve 251 closes and the second solenoid valve 241 opens, and the warm water heated by the energy storage tank 1 enters the heater 3 for heating, so as to achieve the purpose of heating by both the energy storage tank 1 and the heater 3. When the water heated by the energy storage tank 1 reaches the user's preset temperature, the first solenoid valve 251 opens and the second solenoid valve 241 closes, and all the cold water is heated by the energy storage tank 1, thereby reducing the user's electricity costs.

[0059] like Figure 1 and 2 As shown, a water flow sensor 42 for detecting water flow is installed on the water inlet pipe section 4.

[0060] In this implementation, a water flow sensor 42 is installed on the water inlet pipe section 4. When water flow is detected by the water flow sensor 42, the heater 3 is started to heat the water, and the water flow servo 6 distributes the water to realize the heating of water by the energy storage tank 1 and / or the heater 3.

[0061] As one example, such as Figure 1 and 2 As shown, a pressure relief valve 43 is also provided on the water inlet pipe section 4, which can relieve the pressure of the input cold water; the energy storage instant electric water heater also includes an electric control board, which realizes intelligent control of the energy storage instant electric water heater.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A storage-type instantaneous electric water heater, characterized in that, include: Energy storage box (1), the energy storage box (1) is filled with phase change material; A circulation pipeline (2) is provided with a heat exchanger (21), which is located inside the energy storage tank (1); Heater (3), said heater (3) is disposed on the circulation pipeline (2); When in water use mode, the heat stored in the phase change material heats the cold water through the heat exchanger (21) and / or the heater (3) to output more heated water; When in energy storage mode, the heater (3) heats cold water, and the heated water is transported to the energy storage tank (1). The heat exchanger (21) stores the heat of the heated water in the phase change material.

2. The energy storage instantaneous electric water heater according to claim 1, characterized in that, The heat exchanger (21) includes multiple straight pipe sections (211) and multiple connecting pipe sections (212). The multiple straight pipe sections (211) extend horizontally and are arranged sequentially at intervals in the vertical direction. Each pair of adjacent straight pipe sections (211) are connected and interconnected through the connecting pipe section (212).

3. The energy storage instantaneous electric water heater according to claim 1 or 2, characterized in that, The energy storage instant electric water heater also includes an inlet pipe section (4) and an outlet pipe section (5). The inlet pipe section (4) and the outlet pipe section (5) are both connected to the circulation pipe (2). The inlet pipe section (4) is used to input cold water, and the outlet pipe section (5) is used to output heated water.

4. The energy storage instantaneous electric water heater according to claim 3, characterized in that, The circulation pipeline (2) includes a first pipe section (22), a second pipe section (23), a third pipe section (24), a fourth pipe section (25), and a fifth pipe section (26); One end of the first pipe section (22) is connected to the water inlet pipe section (4), and the other end of the first pipe section (22) is connected to one end of the heat exchanger (21); One end of the second pipe section (23) is connected to the water inlet pipe section (4), and the other end of the second pipe section (23) is connected to the water inlet of the heater (3); One end of the third pipe section (24) is connected to the end of the heat exchanger (21) away from the first pipe section (22), and the other end of the third pipe section (24) is connected to the second pipe section (23); One end of the fourth pipe section (25) is connected to the third pipe section (24), and the other end of the fourth pipe section (25) is connected to the outlet pipe section (5); One end of the fifth pipe section (26) is connected to the water outlet of the heater (3), and the other end of the fifth pipe section (26) is connected to the fourth pipe section (25).

5. The energy storage instantaneous electric water heater according to claim 4, characterized in that, The first pipe section (22) and the second pipe section (23) are connected to the inlet pipe section (4) via a water volume servo (6).

6. The energy storage instantaneous electric water heater according to claim 4, characterized in that, A first solenoid valve (251) is provided on the fourth pipe section (25). The connection point between the fourth pipe section (25) and the third pipe section (24) is the first connection point (252). The connection point between the fifth pipe section (26) and the fourth pipe section (25) is the second connection point (253). The first solenoid valve (251) is located between the first connection point (252) and the second connection point (253). A second solenoid valve (241) is provided on the third pipe section (24). The connection between the third pipe section (24) and the second pipe section (23) is a third connection point (242). The second solenoid valve (241) is located between the first connection point (252) and the third connection point (242).

7. The energy storage instantaneous electric water heater according to claim 3, characterized in that, The water inlet pipe section (4) is provided with a first angle valve (41), which is used to control the water in the water inlet pipe section (4); The water outlet pipe section (5) is equipped with a second angle valve (51), which is used to control the water in the water outlet pipe section (5).

8. The energy storage instantaneous electric water heater according to claim 4, characterized in that, A circulation pump (231) is installed on the second pipe section (23). When in energy storage mode, the circulation pump (231) is used to transport the water heated by the heater (3) to the energy storage tank (1).

9. The energy storage instantaneous electric water heater according to claim 4, characterized in that, Temperature probes (7) for detecting water temperature are installed on the first pipe section (22), the third pipe section (24) and the outlet pipe section (5).

10. The energy storage instantaneous electric water heater according to claim 3, characterized in that, A water flow sensor (42) for detecting water flow is installed on the water inlet pipe section (4).

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