Heating device and electric water heater

By adding a heating module and auxiliary heating water circuit to the electric water heater, the problem of insufficient hot water supply in traditional electric water heaters is solved, enabling rapid hot water supply and on-demand adjustment, thus improving user experience and system reliability.

CN224340335UActive Publication Date: 2026-06-09NANJING JINGCAI FENCHENG TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING JINGCAI FENCHENG TECH CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional electric water heaters are prone to insufficient hot water supply when the water temperature in the storage tank is insufficient or when the demand for hot water is high, which affects the user experience.

Method used

Design a heating device including a heating module and a hot water tank assembly. By adding an auxiliary heating water path, cold water can be directly and quickly heated and output or mixed with hot water in the hot water tank for output, so as to realize the on-demand adjustment of hot water supply.

Benefits of technology

It increases the amount of hot water supplied per unit time, reduces waiting time, improves user experience, ensures on-demand hot water demand, enhances practicality and reliability, and reduces energy consumption and maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model relates to a heating device and an electric water heater, belonging to the field of water heaters. The heating device includes: a hot water tank assembly; a heating module, which is disposed on or adjacent to the hot water tank assembly, and has an inlet, a water supply channel, and an outlet; a valve body assembly, which is disposed on or adjacent to the hot water tank assembly, and has a valve body inlet, a valve chamber, and a valve body outlet; a first water supply structure and a second water supply structure; the first water supply structure, the heating module, the second water supply structure, and the valve body assembly are connected in sequence, with the first water supply structure connected to the inlet and the outlet connected to the valve body inlet. The heating device disclosed in this application, through the addition of the heating module, can add an auxiliary heating water path to the original hot water system, significantly increasing the hot water supply per unit time and meeting greater water demand.
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Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to a heating device and an electric water heater. Background Technology

[0002] Traditional electric water heaters typically employ a built-in heating design, meaning that an electric heating element and hot water pipes are installed inside the storage tank. The heating element directly heats the water in the tank, while cold water gradually warms up as it flows through the hot water pipes through heat exchange with the water in the tank. The limitation of this structure is that hot water production relies heavily on the overall heating efficiency of the water in the tank. If the water temperature in the tank is insufficient or the demand for hot water is high, insufficient hot water supply can easily occur, affecting the user experience. Utility Model Content

[0003] Therefore, it is necessary to provide a heating device and an electric water heater to address the problem that traditional electric water heaters often experience insufficient hot water supply when the water temperature in the storage tank is too low or when the demand for hot water is high, thus affecting the user experience.

[0004] A heating device includes: a hot water tank assembly; a heating module, which is disposed on or adjacent to the hot water tank assembly, the heating module having an inlet, a water supply channel, and an outlet, the inlet, the water supply channel, and the outlet being sequentially connected; a valve body assembly, which is disposed on or adjacent to the hot water tank assembly, the valve body assembly having a valve body inlet, a valve cavity, and a valve body outlet, the valve body inlet, the valve cavity, and the valve body outlet being sequentially connected; a first water supply structure and a second water supply structure, the first water supply structure, the heating module, the second water supply structure, and the valve body assembly being sequentially connected, the first water supply structure being connected to the inlet, and the outlet being connected to the valve body inlet.

[0005] The first aspect of this application discloses a heating device that adds an auxiliary heating water path to the existing hot water system by setting a heating module. Cold water is rapidly heated by the heating module and can be directly output or mixed with hot water in the hot water tank, thereby significantly increasing the hot water supply per unit time and meeting greater water demand. Because the heating module directly and rapidly heats the flowing cold water, compared to the traditional method of heating the entire water tank, it can output hot water faster, reduce waiting time, and improve user experience. The heating module can operate in conjunction with or independently of the traditional hot water system. During periods of low water demand, only the hot water in the tank can be used; during periods of high water demand, the heating module can be activated to supplement heating, achieving on-demand adjustment and improving energy efficiency. This design overcomes the potential problem of insufficient hot water supply in traditional electric water heaters. Furthermore, compared to traditional water heaters using a single heating water path, which may affect water usage due to inability to heat continuously, this application uses two heating water paths that can alternate heating, ensuring water supply at all times, making it highly practical. The heating module and hot water tank assembly adopt a separate design, which can be integrated or arranged adjacently. This not only reduces the need to modify the original structure, but also facilitates the individual maintenance or replacement of the heating module, thereby improving the reliability and service life of the device.

[0006] In one embodiment, a third water supply structure is also included. The first water supply structure, the heating module, the second water supply structure, the valve body assembly, and the third water supply structure are connected in sequence, and the third water supply structure is connected to the valve body outlet. The third water supply structure enables the output of hot water heated by the heating module, forming a heating water circuit independent of the traditional water circuit, achieving instant hot water supply and meeting immediate hot water needs. Users can choose to use hot water heated by the hot water tank assembly or directly use hot water heated by the heating module, flexibly switching according to their needs and avoiding the problem of waiting for heating in traditional storage water heaters.

[0007] In one embodiment, the first, second, and third water supply structures are all water supply pipes. By using water supply pipes for all three structures, the flow of water between the heating module, valve assembly, and outlet is ensured to be smoother, reducing pressure drop and heat loss. This design simplifies the replacement and maintenance of individual components, reducing long-term operating costs.

[0008] In one embodiment, a water inlet connector is further included, which is disposed on the first water conveying structure and located at the end of the first water conveying structure. By positioning the water inlet connector at the end of the first water conveying structure, it facilitates quick connection with an external water supply source, improving installation efficiency and reducing assembly complexity. The water inlet connector employs a dedicated connection structure to effectively prevent leakage at the water inlet end, thereby enhancing the reliability of system operation.

[0009] In one embodiment, a water outlet connector is also included, which is disposed on the third water supply structure and located at its end. The water outlet connector effectively prevents leakage during hot water delivery, ensuring system operational safety. Located at the end of the third water supply structure, the water outlet connector allows heated hot water to be directly and efficiently delivered to the point of use, improving practicality.

[0010] In one embodiment, a heating control system is also included. This system is either mounted on the heating module or electrically connected to it. The heating control system can control the heating module to start or stop operating. By configuring the heating control system, the operation of the heating module can be controlled according to the water flow rate, ensuring that heating only occurs when there is effective water flow, avoiding the risk of dry burning and improving safety. This design avoids ineffective heating, reduces energy consumption, and improves energy efficiency. By monitoring and dynamically adjusting the heating power in real time, the outlet water temperature is stably maintained within the set range, enhancing user comfort.

[0011] In one embodiment, a water flow sensor is also included. The water flow sensor is electrically connected to the heating control system and is located in the water path in which the first water supply structure, the heating module, the second water supply structure, and the valve body assembly are sequentially connected. By monitoring changes in water flow in real time, the flow sensor provides accurate start-stop judgment for the heating control system, ensuring that the heating module only operates when water flows through it. Through instant detection of water flow status, heating can be automatically cut off in case of flow interruption or insufficient flow, effectively preventing the risk of dry burning and improving system safety.

[0012] In one embodiment, the water flow sensor is mounted on the heating module and located at the water supply channel. The water flow sensor detects the water flow rate in the water supply channel. By directly detecting the real-time water flow rate within the channel, the heating control response is ensured to be completely synchronized with the current water flow status, avoiding signal delay. This design ensures that the heating control system can promptly control the heating module to start or stop operating.

[0013] In one embodiment, a temperature sensor is also included, which is mounted on the heating module and electrically connected to the heating control system. Through this connection, the temperature sensor monitors the operating temperature of the heating module in real time, ensuring that the outlet water temperature is strictly maintained within the set range, preventing excessively high or low temperatures. The heating control system dynamically adjusts the heating power based on the feedback signal from the temperature sensor, achieving a precise balance between temperature and energy consumption. When an abnormal temperature rise is detected, the heating control system can immediately cut off the heating power to prevent equipment damage or the risk of scalding.

[0014] In one embodiment, a thermal circuit breaker is also included, which is installed in the power supply line of the heating module and / or electrically connected to the heating control system. The thermal circuit breaker adds an independent physical protection device, forming a redundant safety mechanism to ensure that the power supply can still be cut off in the event of temperature control failure. This design ensures that the thermal circuit breaker activates immediately when the heating module temperature exceeds a safe threshold, effectively preventing fire hazards caused by overheating.

[0015] In one embodiment, the heating module includes a heating element, a first connector, and a second connector. The heating element is disposed on or adjacent to the hot water tank assembly and has a water supply channel. Both the first connector and the second connector are disposed on the heating element. The first connector is connected to the first water supply structure and has a water inlet. The second connector is connected to the second water supply structure and has a water outlet. The first and second connectors ensure a stable connection with the water supply pipe, effectively preventing liquid leakage.

[0016] An electric water heater includes: a housing assembly; and the aforementioned heating device, which is disposed on the housing assembly.

[0017] The second aspect of this application discloses an electric water heater that ensures a highly efficient and stable hot water supply through functions such as coordinated heating of the water circuit by the heating device, independent temperature control, and on-demand adjustment. Safety protection mechanisms of the heating device, such as a heating control system, a water flow sensor, and a thermal circuit breaker, guarantee the long-term stable operation of the electric water heater. Attached Figure Description

[0018] Figure 1 This is a first perspective view of the heating device;

[0019] Figure 2 This is a second perspective view of the heating device;

[0020] Figure 3 This is the first exploded view of the heating device;

[0021] Figure 4 This is the second exploded view of the heating device;

[0022] Figure 5 A perspective view of the heating module, valve body assembly, first water supply structure, second water supply structure and third water supply structure;

[0023] Figure 6 Exploded view of the heating module, valve body assembly, first water supply structure, second water supply structure and third water supply structure;

[0024] Figure 7This is a first perspective view of the heating module;

[0025] Figure 8 This is a second perspective view of the heating module;

[0026] Figure 9 This is a 3D view of the valve body assembly;

[0027] Figure 10 This is a cross-sectional view of the valve body assembly;

[0028] Figure 11 This is a 3D diagram of an electric water heater.

[0029] The correspondence between the reference numerals and the component names is as follows:

[0030] 1. Hot water tank assembly;

[0031] 2 heating module, 21 heating element, 22 first connector, 23 second connector, 201 water inlet, 202 water outlet;

[0032] 3 Valve body assembly, 301 Valve body inlet, 302 Valve chamber, 303 Valve body outlet;

[0033] 4. First water conveyance structure;

[0034] 5. Second water conveyance structure;

[0035] 6. Third water conveyance structure;

[0036] 7. Water inlet connector;

[0037] 8. Water outlet connector;

[0038] 100 housing assembly. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0041] Example 1

[0042] like Figure 1-10As shown, this embodiment discloses a heating device, including: a hot water tank assembly 1; a heating module 2, wherein the heating module 2 is disposed on the hot water tank assembly 1 or disposed adjacent to the hot water tank assembly 1, the heating module 2 having an inlet 201, a water supply channel and an outlet 202, the inlet 201, the water supply channel and the outlet 202 being sequentially connected; and a valve body assembly 3, wherein the valve body assembly 3 is disposed on the hot water tank assembly 1 or disposed adjacent to the hot water tank assembly 1. 1. The valve body assembly 3 is arranged adjacent to each other, and is provided with a valve body inlet 301, a valve cavity 302 and a valve body outlet 303. The valve body inlet 301, the valve cavity 302 and the valve body outlet 303 are connected in sequence. A first water supply structure 4 and a second water supply structure 5 are connected in sequence. The first water supply structure 4, the heating module 2, the second water supply structure 5 and the valve body assembly 3 are connected in sequence. The first water supply structure 4 is connected to the water inlet 201 and the water outlet 202 is connected to the valve body inlet 301.

[0043] The first aspect of this application discloses a heating device that adds an auxiliary heating water path to the existing hot water system through the installation of a heating module 2. Cold water is rapidly heated by the heating module 2 and can be directly output or mixed with hot water from the hot water tank, thereby significantly increasing the hot water supply per unit time and meeting greater water demand. Because the heating module 2 directly and rapidly heats the flowing cold water, compared to the traditional method of heating the entire water tank, it can output hot water faster, reduce waiting time, and improve user experience. The heating module 2 can operate in conjunction with or independently of the traditional hot water system. During periods of low water demand, only the hot water from the tank can be used; during periods of high water demand, the heating module 2 can be activated to supplement heating, achieving on-demand adjustment and improving energy efficiency. This design overcomes the potential problem of insufficient hot water supply in traditional electric water heaters. Furthermore, compared to traditional water heaters using a single heating water path, which may affect water usage due to inability to heat continuously, this application uses two heating water paths that can alternate heating, ensuring water supply at all times, making it highly practical. The heating module 2 and the hot water tank assembly 1 adopt a separate design, which can be integrated or arranged adjacently. This not only reduces the need to modify the original structure, but also facilitates the individual maintenance or replacement of the heating module 2, thereby improving the reliability and service life of the device.

[0044] like Figure 1-4 and Figure 5-6As shown, in addition to the features of the above embodiments, this embodiment further includes a third water supply structure 6. The first water supply structure 4, the heating module 2, the second water supply structure 5, the valve body assembly 3, and the third water supply structure 6 are connected in sequence, and the third water supply structure 6 is connected to the valve body output port 303. The third water supply structure 6 enables the output of hot water heated by the heating module 2, forming a heating water circuit independent of the traditional water circuit, achieving instant hot water supply and meeting immediate hot water needs. Users can choose to use the hot water heated by the hot water tank assembly 1 or directly use the hot water heated by the heating module 2, flexibly switching according to their needs, avoiding the problem of waiting for heating in traditional storage water heaters.

[0045] like Figure 1-4 and Figure 5-6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first water supply structure 4, the second water supply structure 5, and the third water supply structure 6 are all water supply pipes. By having the first water supply structure 4, the second water supply structure 5, and the third water supply structure 6 all be water supply pipes, the water supply pipes ensure smoother water flow between the heating module 2, the valve body assembly 3, and the outlet, reducing pressure drop and heat loss. This design simplifies the replacement and maintenance of individual components, reducing later operating costs.

[0046] like Figure 1-4 and Figure 5-6 As shown, in addition to the features of the above embodiments, this embodiment further includes a water inlet connector 7, which is disposed on the first water supply structure 4 and located at the end of the first water supply structure 4. The location of the water inlet connector 7 at the end of the first water supply structure 4 facilitates quick connection with an external water supply source, improving installation efficiency and reducing assembly complexity. The water inlet connector 7 adopts a dedicated connection structure, effectively preventing leakage at the water inlet end and improving the reliability of system operation.

[0047] like Figure 1-4 and Figure 5-6 As shown, in addition to the features of the above embodiments, this embodiment further includes a water outlet connector 8, which is disposed on the third water supply structure 6 and located at the end of the third water supply structure 6. The water outlet connector 8 effectively prevents leakage during hot water delivery, ensuring the safety of system operation. The water outlet connector 8, located at the end of the third water supply structure 6, allows the heated hot water to be directly and efficiently delivered to the point of use, improving practicality.

[0048] In addition to the features of the above embodiments, this embodiment further specifies that it includes a heating control system, which is disposed on the heating module 2 or electrically connected to the heating module 2. The heating control system can control the heating module 2 to start or stop working. By setting the heating control system, the operation of the heating module 2 can be controlled according to the water flow rate, ensuring that heating only occurs when there is effective water flow, avoiding the risk of dry burning and improving safety. This design avoids ineffective heating, reduces energy consumption, and improves energy utilization efficiency. By monitoring and dynamically adjusting the heating power in real time, the outlet water temperature is stably maintained within the set range, improving user comfort.

[0049] In addition to the features of the above embodiments, this embodiment further specifies that it includes a water flow sensor, which is electrically connected to the heating control system. The water flow sensor is located in the water path in which the first water supply structure 4, the heating module 2, the second water supply structure 5, and the valve body assembly 3 are sequentially connected. By monitoring the water flow changes in real time through the flow sensor, accurate start-stop judgment is provided for the heating control system, ensuring that the heating module 2 only operates when water flows through it. By detecting the water flow status in real time, heating can be automatically cut off when the flow is interrupted or insufficient, effectively preventing the risk of dry burning and improving system safety.

[0050] In addition to the features of the above embodiments, this embodiment further specifies that: the water flow sensor is disposed on the heating module 2 and located at the water supply channel, and the water flow sensor is used to detect the water flow rate of the water supply channel. By setting the water flow sensor to detect the water flow rate of the water supply channel, the real-time water flow rate in the water supply channel is directly detected, ensuring that the heating control response is completely synchronized with the current water flow state and avoiding signal delay. This design ensures that the heating control system can promptly control the heating module 2 to start or stop working.

[0051] In addition to the features of the above embodiments, this embodiment further includes a temperature sensor, which is disposed on the heating module 2 and electrically connected to the heating control system. Through this electrical connection, the temperature sensor monitors the operating temperature of the heating module 2 in real time, ensuring that the outlet water temperature is strictly maintained within the set range, avoiding excessively high or low temperatures. The heating control system dynamically adjusts the heating power based on the feedback signal from the temperature sensor, achieving a precise balance between temperature and energy consumption. When an abnormal temperature rise is detected, the heating control system can immediately cut off the heating power supply to prevent equipment damage or the risk of scalding.

[0052] In addition to the features of the above embodiments, this embodiment further includes a thermal circuit breaker, which is installed in the power supply line of the heating module 2 and / or electrically connected to the heating control system. The addition of a thermal circuit breaker provides an independent physical protection device, forming a redundant safety mechanism to ensure that the power supply can still be cut off in the event of temperature control failure. This design ensures that the thermal circuit breaker operates immediately when the temperature of the heating module 2 exceeds a safe threshold, effectively preventing fire hazards caused by overheating.

[0053] like Figure 7 and Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the heating module 2 includes a heating element 21, a first connector 22, and a second connector 23. The heating element 21 is disposed on or adjacent to the hot water tank assembly 1, and the heating element 21 has the water supply channel. The first connector 22 and the second connector 23 are both disposed on the heating element 21. The first connector 22 is connected to the first water supply structure 4 and has the water inlet 201. The second connector 23 is connected to the second water supply structure 5 and has the water outlet 202. The arrangement of the first connector 22 and the second connector 23 achieves a stable connection with the water supply pipe, effectively preventing liquid leakage.

[0054] Example 2

[0055] like Figure 11 As shown, this embodiment discloses an electric water heater, including: a housing assembly 100; and the aforementioned heating device, which is disposed on the housing assembly 100.

[0056] The second aspect of this application discloses an electric water heater that ensures a highly efficient and stable hot water supply through functions such as coordinated heating of the water circuit by the heating device, independent temperature control, and on-demand adjustment. Safety protection mechanisms of the heating device, such as a heating control system, a water flow sensor, and a thermal circuit breaker, guarantee the long-term stable operation of the electric water heater.

[0057] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heating device, characterized in that, include: Hot water tank assembly (1); Heating module (2), the heating module (2) is disposed on the hot water tank assembly (1) or the heating module (2) is disposed adjacent to the hot water tank assembly (1), the heating module (2) is provided with an inlet (201), a water supply channel and an outlet (202), the inlet (201), the water supply channel and the outlet (202) are connected in sequence; A valve body assembly (3) is provided on the hot water tank assembly (1) or adjacent to the hot water tank assembly (1). The valve body assembly (3) is provided with a valve body inlet (301), a valve chamber (302) and a valve body outlet (303). The valve body inlet (301), the valve chamber (302) and the valve body outlet (303) are connected in sequence. The first water supply structure (4) and the second water supply structure (5) are connected in sequence, the first water supply structure (4), the heating module (2), the second water supply structure (5) and the valve body assembly (3). The first water supply structure (4) is connected to the inlet (201) and the outlet (202) is connected to the valve body input port (301).

2. The heating device according to claim 1, characterized in that, It also includes a third water supply structure (6), wherein the first water supply structure (4), the heating module (2), the second water supply structure (5), the valve body assembly (3) and the third water supply structure (6) are connected in sequence, and the third water supply structure (6) is connected to the valve body output port (303).

3. The heating device according to claim 2, characterized in that, The first water conveying structure (4), the second water conveying structure (5), and the third water conveying structure (6) are all water conveying pipes; And / or also includes a water inlet connector (7), which is disposed on the first water conveying structure (4) and located at the end of the first water conveying structure (4); And / or may also include a water outlet connector (8), which is disposed on the third water supply structure (6) and located at the end of the third water supply structure (6).

4. The heating device according to claim 1, characterized in that, It also includes a heating control system, which is installed on the heating module (2) or electrically connected to the heating module (2), and the heating control system can control the heating module (2) to start or stop working.

5. The heating device according to claim 4, characterized in that, It also includes a water flow sensor, which is electrically connected to the heating control system. The water flow sensor is located in the water path in which the first water supply structure (4), the heating module (2), the second water supply structure (5), and the valve body assembly (3) are connected in sequence.

6. The heating device according to claim 5, characterized in that, The water flow sensor is mounted on the heating module (2) and located at the water supply channel. The water flow sensor is used to detect the water flow rate of the water supply channel.

7. The heating device according to claim 4, characterized in that, It also includes a temperature sensor, which is disposed on the heating module (2) and electrically connected to the heating control system.

8. The heating device according to claim 4, characterized in that, It also includes a thermal circuit breaker, which is installed in the power supply line of the heating module (2) and / or the thermal circuit breaker is electrically connected to the heating control system.

9. The heating device according to claim 1, characterized in that, The heating module (2) includes a heating element (21), a first connector (22) and a second connector (23). The heating element (21) is disposed on or adjacent to the hot water tank assembly (1). The heating element (21) is provided with the water supply channel. The first connector (22) and the second connector (23) are both disposed on the heating element (21). The first connector (22) is connected to the first water supply structure (4). The first connector (22) is provided with the water inlet (201). The second connector (23) is connected to the second water supply structure (5). The second connector (23) is provided with the water outlet (202).

10. An electric water heater, characterized in that, include: Housing assembly (100); The heating device as described in any one of claims 1-9, wherein the heating device is disposed on the housing assembly (100).