Water boiling device for water boiling test

Abstract

The utility model relates to a water boiling device for a water boiling test. The water boiling device comprises a water boiling box, a temperature adjusting unit, a liquid level adjusting unit and a controller. The temperature adjusting unit comprises a heating piece and a temperature sensor which are electrically connected to the controller, and the temperature sensor senses temperature information of liquid in the water boiling box and sends the temperature information to the controller; and the controller responds to the condition that the temperature value indicated by the temperature information is lower than the target temperature and controls the heating piece to heat the liquid. The liquid level adjusting unit comprises a target liquid level sensor and a liquid supplementing assembly which are electrically connected to the controller, and the target liquid level sensor senses liquid level information of liquid in the water boiling box and sends the liquid level information to the controller; the controller responds to that the liquid level indicated by the liquid level information is lower than the target liquid level and controls the liquid supplementing assembly to supply liquid to the water boiling box. The water boiling device can automatically monitor and timely and accurately adjust the temperature and the liquid level height of the liquid in the water boiling box.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic parts manufacturing, in particular to a boiling device for performing a boiling test on plastic parts. Background Art

[0002] The contents of this section merely provide background information related to the present invention and may not constitute prior art.

[0003] To evaluate the strength, pressure resistance, and other properties of products like plastic parts, a water boiling test (also known as a hot water aging test) is often performed. This test typically uses a boiling tank filled with hot water. During the test, the product is immersed in hot water at a preset temperature for a predetermined period of time before being removed. Various performance tests are then performed on the product after the boiling period.

[0004] When using existing water boiling equipment for testing, the water temperature and water level within the boiling tank are typically manually monitored and adjusted based on personal experience. This often leads to errors due to limited personal experience, thus affecting test accuracy. Furthermore, manual methods are inflexible, and subjective factors such as fatigue and negligence often prevent timely adjustment of the water level and temperature, adversely affecting the test.

[0005] Therefore, it is necessary to provide a water boiling device that can automatically monitor and timely and accurately adjust the water temperature and water level in the water boiling box. Utility Model Content

[0006] The primary purpose of the utility model is to provide a water boiling device which can automatically monitor and timely and accurately adjust the temperature and level of liquid in a water boiling box.

[0007] Another object of the present invention is to provide a water boiling device that can improve the liquid heating efficiency and ensure that the temperature of the liquid in the water boiling box is consistent.

[0008] Another object of the present invention is to provide a water boiling device which can prevent the liquid from being heated when the liquid level inside the water boiling box is low, thereby ensuring safety.

[0009] In order to solve the above technical problems, the utility model provides a water boiling device, which can automatically monitor the liquid temperature and liquid level in the water boiling tank, and can timely and accurately adjust the liquid temperature and liquid level.

[0010] The water boiling device for water boiling test according to the present application includes a water boiling tank, a temperature regulating unit, a liquid level regulating unit and a controller.

[0011] The temperature adjustment unit includes a heating element and a temperature sensor electrically connected to the controller. The temperature sensor senses the temperature of the liquid in the boiling tank and transmits the temperature information to the controller, where the temperature information indicates the temperature value of the liquid. When the temperature value indicated by the temperature information from the temperature sensor is lower than a target temperature, the controller controls the heating element to heat the liquid until the liquid temperature reaches the target temperature.

[0012] The liquid level adjustment unit includes a target liquid level sensor and a liquid replenishing assembly electrically connected to the controller, wherein the target liquid level sensor senses liquid level information of the liquid inside the water boiling tank and sends the liquid level information to the controller, wherein the liquid level information is used to indicate the liquid level height of the liquid; in response to the liquid level height indicated by the liquid level information from the target liquid level sensor being lower than the target liquid level, the controller controls the liquid replenishing assembly to supply liquid into the water boiling tank until the liquid level height reaches the target liquid level.

[0013] In some embodiments, the liquid level adjustment unit further includes a minimum liquid level sensor electrically connected to the controller, the minimum liquid level sensor senses minimum liquid level information and sends the minimum liquid level information to the controller, the minimum liquid level information is used to indicate that the liquid level is lower than the minimum liquid level; the controller controls the heating element to stop heating the liquid in response to the minimum liquid level information.

[0014] In some embodiments, the water boiling device further comprises an alarm connected to the controller, and the controller controls the alarm to issue an alarm message in response to the minimum liquid level information from the minimum liquid level sensor.

[0015] In some embodiments, the target liquid level sensor and the minimum liquid level sensor are pressure-type target liquid level sensors, resistance-type target liquid level sensors, ultrasonic target liquid level sensors, or float-type target liquid level sensors.

[0016] In some embodiments, the liquid replenishing assembly includes a liquid reservoir and a liquid replenishing pump, wherein the liquid reservoir stores liquid for the water boiling test; and the liquid replenishing pump is electrically connected to a controller for pumping the liquid from the liquid reservoir into the water boiling tank.

[0017] In some embodiments, the heating element is an elongated element arranged at the bottom of the water boiling tank along the length or width direction of the water boiling tank.

[0018] In some embodiments, the temperature regulating unit further comprises a liquid circulation component connected to the controller, wherein the liquid circulation component is configured to circulate the liquid inside the water boiling tank when the heating element heats the liquid.

[0019] In some embodiments, the liquid circulation component includes a circulation pump having a liquid inlet and a liquid outlet, wherein the circulation pump is electrically connected to the controller, and the liquid can enter the circulation pump through the liquid inlet and flow out of the circulation pump through the liquid outlet, thereby driving the liquid to circulate inside the water boiling tank.

[0020] In some embodiments, the temperature regulating unit further comprises a temperature display screen electrically connected to the controller, wherein the temperature display screen is provided on an outer wall of the water boiling tank and is configured to display the temperature value of the liquid inside the water boiling tank.

[0021] In some embodiments, the liquid level regulating unit further comprises a liquid level display screen electrically connected to the controller, wherein the liquid level display screen is provided on an outer wall of the water boiling tank and is configured to display the liquid level of the liquid inside the water boiling tank.

[0022] The water boiling device according to the present invention includes a temperature regulating unit, a liquid level regulating unit and a controller, and has at least the following technical effects:

[0023] Through information exchange between the controller and the temperature sensor and heating element in the temperature adjustment unit, automatic monitoring and automatic adjustment of the liquid temperature in the boiling tank are achieved, thereby maintaining the liquid temperature at the target temperature to ensure test accuracy.

[0024] The temperature control unit also includes a liquid circulation assembly. When the heating element heats the liquid, this liquid circulation assembly circulates the liquid within the water boiling tank. This allows all the liquid to approach the heating element and be directly heated by the heating element, thereby improving the liquid heating efficiency and ensuring a consistent temperature within the water boiling tank. Using liquid with a consistent temperature to heat the product ensures uniform heating, thereby improving test accuracy.

[0025] Through information exchange between the controller and the target liquid level sensor in the liquid level adjustment unit, automatic monitoring and automatic adjustment of the liquid level in the boiling tank are achieved, thereby ensuring that the products in the boiling tank can be immersed in liquid during the test to ensure test accuracy.

[0026] Through information interaction between the controller, the minimum liquid level sensor and the heating element, heating of the liquid when the liquid level inside the boiling tank is low can be prevented, thereby ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following description of the embodiments of the present invention is based on examples only and is based on the accompanying drawings. In the accompanying drawings, the same features or components are represented by the same reference numerals, and the drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 A schematic diagram showing an embodiment of a water boiling device according to the present invention is shown;

[0029] Figure 2 A schematic structural diagram of an embodiment of a water boiling device according to the present invention is shown; and

[0030] Figure 3 The figure shows a simplified structural diagram of an embodiment of a heating element and a liquid circulation component of a water boiling device according to the present invention. DETAILED DESCRIPTION

[0031] The following description is merely illustrative in nature and is not intended to limit the present invention, its applications, or uses. It should be understood that throughout the drawings, like reference numerals indicate identical or similar parts and features. The drawings merely schematically illustrate the concepts and principles of the embodiments of the present invention and do not necessarily depict the specific dimensions and proportions of each embodiment of the present invention. Certain portions of certain drawings may be exaggerated to illustrate relevant details or structures of the embodiments of the present invention.

[0032] In describing the embodiments of this utility model, the relevant positional terms used are based on the orientations shown in the corresponding drawings or the relative positional relationships between the components when the product is typically displayed. These positional terms are used only to more clearly describe the relative positional relationships between the components and are not intended to describe absolute positions. In actual applications, when the product is displayed in different postures, the positional relationships used herein may change. In this utility model, the term "plurality" refers to two or more, unless otherwise specified.

[0033] The following will refer to Figures 1 to 3 Various embodiments of the water boiling test device according to the present invention are described in detail.

[0034] Figure 1 Shows a schematic diagram of a water boiling device according to the present invention. Figure 1 Detailed description of the water boiling tank of the water boiling device is shown in FIG. Figure 2 The following is a schematic structural diagram of an embodiment of a water boiling device according to the present invention. Figure 2As shown, the water boiling device 1 in this embodiment includes a water boiling tank 2, a temperature regulating unit 3, a liquid level regulating unit 4, and a controller 5. Some components of the temperature regulating unit 3 and the liquid level regulating unit 4 (such as the temperature sensor, the heating element, and the liquid circulation component to be described below) can be arranged inside the water boiling tank 2, and the controller 5 can be arranged outside the water boiling tank 2. Figure 1 As shown, the boiling tank 2 can be a rectangular parallelepiped structure, containing a liquid for the boiling test, which can be water. During the test, a fixture attached to the product to be tested (e.g., a plastic part) is placed inside the boiling tank 2, submerging the product in the liquid. The dimensions and structure of the boiling tank are not described here in detail. The boiling tank in this embodiment can be any suitable type of boiling tank known in the art.

[0035] The following combination Figure 2 The components of the temperature regulating unit 3 and the liquid level regulating unit 4 and their respective working principles are described in detail. Figure 2 , the components of the liquid level regulating unit 4 are in the dotted box on the left, and the components of the temperature regulating unit 3 are in the dotted box on the right, wherein “→” represents a circuit connection relationship, which is used to indicate that the two connected components are electrically connected to each other; Represents a pipe connection relationship, which is used to indicate that the pipe can allow liquid to flow between the two connected components. Figure 2 The purpose of the two dotted boxes in FIG. 1 is only to roughly distinguish the temperature adjustment unit 3 from the liquid level adjustment unit 4 , and the dotted boxes do not refer to any entity or actual connection relationship.

[0036] In order to realize automatic monitoring and automatic adjustment of the liquid temperature in the boiling tank, Figure 2 As shown, the temperature adjustment unit 3 may include a heater 31 and a temperature sensor 32. Both the temperature sensor 32 and the heater 31 are electrically connected to the controller 5, enabling information exchange between them. The temperature sensor 32 senses the temperature S1 of the liquid in the boiling tank 2 and transmits this temperature information S1 to the controller 5. The temperature information S1 indicates the temperature of the liquid in the boiling tank 2. This allows for automatic monitoring of the temperature of the liquid in the boiling tank, saving labor costs. The temperature sensor 32 may be located, for example, on the upper portion of the inner wall of the boiling tank 2, but below the water level. In some embodiments, the temperature sensor 32 may be a commercially available PT100 temperature sensor with a temperature sensing chip accuracy of CLASS 0.5.

[0037] The controller 5 can receive temperature information S1 from the temperature sensor 32 and, based on this information, determine whether the liquid in the boiling tank 2 needs to be heated. The boiling test requires a specific temperature for the liquid in the boiling tank 2. If the liquid temperature in the boiling tank 2 does not reach the target temperature during the boiling test, the test accuracy will be adversely affected. Therefore, in some embodiments, if the liquid temperature indicated by the temperature information S1 is below the target temperature, the controller 5 can control the heating element 31 to heat the liquid until the target temperature is reached, facilitating subsequent boiling tests. The specific value of this target temperature depends on factors such as the material of the product being tested. In this way, the liquid temperature in the boiling tank can be automatically adjusted if the liquid temperature does not reach the target temperature.

[0038] To facilitate staff to understand the liquid temperature inside the boiling tank, such as Figure 1 and Figure 2 As shown, the temperature adjustment unit 3 may include a temperature display screen 34 disposed on the outer wall of the water boiling tank 2. The temperature display screen 34 is electrically connected to the controller 5. After receiving temperature information from the temperature sensor, the controller 5 controls the temperature display screen 34 to display the temperature of the liquid in the water boiling tank 2 in real time. In this way, the staff can check the temperature of the liquid in the water boiling tank at any time, which is very convenient.

[0039] Refer to the following Figure 2 and Figure 3 An embodiment of the temperature adjustment unit will be described in detail.

[0040] like Figure 3 As shown, the heating element 31 of the temperature control unit for heating the liquid can be multiple elongated elements arranged at the bottom of the boiling tank. These elongated elements can be arranged side by side along the length or width of the boiling tank. This increases the surface area of ​​the heating element, thereby increasing the heat dissipation area and improving heating efficiency. In some embodiments, the heating element 31 can be a tubular structure, such as a metal tube, to further increase the surface area of ​​the heating element 31. A resistance wire can be housed within the metal tube.

[0041] The size limitation of the heating element 31 results in a limited range of direct heating and low heating efficiency. In order to increase the liquid heating rate and make the temperature in the water boiling box uniform, Figure 2As shown, in this embodiment, the temperature adjustment unit 3 may further include a liquid circulation assembly 33. The liquid circulation assembly 33 is electrically connected to the controller 5. The controller controls the liquid circulation assembly to circulate liquid within the water boiling tank 2, allowing all liquid to approach the heating element 31 and be directly heated by the heating element 31. This improves liquid heating efficiency and ensures a consistent temperature within the water boiling tank. Using liquid of a consistent temperature to heat the product ensures uniform heating, thereby improving test accuracy.

[0042] As an example, Figure 3 As shown, the liquid circulation component 33 may include a circulation pump 331 and a liquid inlet 332 and a liquid outlet 333 provided on the circulation pump. The controller 5 may control the operation of the circulation pump 331. The circulation pump 331 provides power for the flow of liquid, so that the liquid in the water boiling tank enters the circulation pump through the liquid inlet 332 and flows out of the circulation pump through the liquid outlet 333, thereby promoting the efficient circulation of the liquid inside the water boiling tank.

[0043] Refer to the following Figure 2 An embodiment of the liquid level regulating unit will be described in detail.

[0044] Since the entire test process may take a long time, the liquid in the boiling tank may be partially or completely evaporated, resulting in the product not being completely immersed in the liquid, which adversely affects the test accuracy. In order to be able to replenish the liquid in the boiling tank in a timely and accurate manner, such as Figure 2 As shown, the liquid level adjustment unit 4 may include a target liquid level sensor 41 and a liquid replenishing assembly 42. The target liquid level sensor 41 is located inside the water boiling tank, and the liquid replenishing assembly 42 is located outside the water boiling tank. The target liquid level sensor 41 and the liquid replenishing assembly 42 are both electrically connected to the controller 5, thereby enabling information exchange between the three.

[0045] The target liquid level sensor 41 is used to sense the liquid level information S2 of the liquid in the boiling tank 2 and send the temperature information S2 to the controller 5. The liquid level information S2 is used to indicate the liquid level height of the liquid. In this way, the liquid level height in the boiling tank can be automatically monitored, thereby saving labor costs.

[0046] The controller 5 receives liquid level information S2 from the target liquid level sensor 41. When the liquid level indicated by the liquid level information S2 falls below the target level, the controller 5 controls the liquid replenishment assembly 42 to supply liquid into the boiling tank 2 until the liquid level reaches the target level, ensuring that the product is completely submerged. The target level is a suitable liquid level for performing a boiling test, e.g., the minimum liquid level required to fully submerge the product. In this manner, if the liquid level in the boiling tank does not reach the target level, the liquid level is automatically adjusted to ensure that the product is fully submerged during the test, thereby ensuring test accuracy.

[0047] Considering that heating may be performed frequently during the entire test process, it is possible that the liquid in the boiling tank will be heated even when the amount of liquid in the boiling tank is very low. If appropriate measures are not taken, all the liquid in the boiling tank may evaporate, and then the empty boiling tank will be heated. This is very dangerous and may cause damage to the boiling device. To avoid the above situation, refer to Figure 2 In this embodiment, the liquid level adjustment unit 4 further includes a minimum liquid level sensor 43 electrically connected to the controller 5. Located within the boiling tank, the minimum liquid level sensor 43 senses the minimum liquid level S3 and transmits this minimum liquid level information S3 to the controller 5. This minimum liquid level information S3 indicates that the liquid level within the boiling tank has fallen below the minimum liquid level. The transmission of this minimum liquid level information S3 indicates that the water level within the boiling device is too low, creating an urgent situation and requiring prompt replenishment. The controller 5 receives this minimum liquid level information S3 from the minimum liquid level sensor and, in response, controls the heating element 31 to cease heating the liquid. This prevents heating of an empty boiling tank, ensuring testing safety and preventing damage to the boiling device.

[0048] In order to promptly notify the relevant staff of the above-mentioned urgent situation, Figure 2 As shown, the water boiling device may also include an alarm 51 electrically connected to the controller 5. The alarm 51 may be located outside the water boiling tank. Upon receiving the minimum liquid level information S3 from the minimum liquid level sensor 43, in addition to controlling the heating element 31 to stop heating the liquid, the controller 5 may also control the alarm 51 to issue an alarm message to alert personnel to take appropriate measures. This alarm message may be transmitted in the form of a high-frequency alarm tone or a warning light. This dual mechanism of automatically stopping heating and issuing an alarm message to personnel fully ensures the safety of the water boiling device.

[0049] The target liquid level sensor 41 and the minimum liquid level sensor 43 can be any suitable type of sensor. For example, the target liquid level sensor 41 and the minimum liquid level sensor 43 can be any commercially available pressure-type target liquid level sensor, resistance-type target liquid level sensor, ultrasonic target liquid level sensor, or float-type target liquid level sensor. The target liquid level sensor 41 and the minimum liquid level sensor 43 can be of the same or different types. In some embodiments, a single liquid level sensor can be provided, which combines the aforementioned functions of the target liquid level sensor 41 and the minimum liquid level sensor 43. This single sensor can send an indication message S2 to the controller to supply liquid to the boiling tank when the liquid level in the boiling tank does not reach the target liquid level, and can also send a minimum liquid level message S3 to the controller to stop heating the liquid when the liquid level in the boiling tank drops to the minimum liquid level.

[0050] To facilitate staff to understand the liquid level inside the boiling tank, such as Figure 1 and Figure 2 As shown, the liquid level adjustment unit 4 may further include a liquid level display 44 disposed on the outer wall of the water boiling tank 2. The liquid level display 44 is electrically connected to the controller 5. After receiving liquid level information from the liquid level sensor, the controller 5 controls the liquid level display 34 to display the liquid level in the water boiling tank 2 in real time. This allows staff to conveniently check the liquid level inside the water boiling tank at any time.

[0051] The liquid replenishing component 42 can supply the liquid for the water boiling test to the inside of the water boiling tank 2 in a timely manner under the control of the controller 5. Figure 2 As shown, the rehydration assembly 42 may include a liquid reservoir 421 and a rehydration pump 422, which is electrically connected to the controller 5. The liquid reservoir 421 stores liquid for the water boiling test and is connected to the interior of the water boiling tank 2 via a pipeline. When the water boiling tank 2 needs to be replenished with liquid, the controller 5 can control the rehydration pump 422 to start operating to provide power for the flow of liquid, so that liquid can be supplied from the liquid reservoir 421 to the interior of the water boiling tank 2 via the pipeline.

[0052] The controller 5 for the temperature adjustment unit and the liquid level adjustment unit can be any suitable commercially available controller. The controller 5 may include a contactor for control. For temperature adjustment, a target temperature (i.e., a target temperature of the liquid) for activating the controller's contactor can be pre-set as needed. When the controller receives information from the temperature sensor indicating that the liquid temperature in the boiling tank is lower than the target temperature, the contactor within the controller automatically activates, sending a current signal to the heating element. In response to this current signal, the heating element begins to operate to heat the liquid. For liquid level adjustment, a target liquid level (i.e., the target liquid level of the liquid) for causing the controller's contactor to operate can be pre-set as needed. When the controller receives liquid level information from the target liquid level sensor that the liquid level in the boiling tank is lower than the target liquid level, the contactor in the controller automatically operates to send a current signal to the liquid replenishing component. In response to the current signal, the liquid replenishing component starts to operate to replenish the liquid in the boiling tank. In addition, a minimum liquid level (i.e., the minimum liquid level of the liquid) for causing the controller's contactor to operate can be pre-set as needed. When the controller receives liquid level information from the minimum liquid level sensor that the liquid level in the boiling tank is lower than the minimum liquid level, the contactor in the controller automatically operates to send a current signal to the heating element. In response to the current signal, the heating element stops heating the liquid to ensure safety.

[0053] The water boiling device according to the present invention includes a temperature regulating unit, a liquid level regulating unit and a controller, wherein:

[0054] Through information exchange between the controller and the temperature sensor and heating element in the temperature adjustment unit, automatic monitoring and automatic adjustment of the liquid temperature in the boiling tank are achieved, thereby maintaining the liquid temperature at the target temperature to ensure test accuracy.

[0055] The temperature control unit also includes a liquid circulation assembly. When the heating element heats the liquid, this liquid circulation assembly circulates the liquid within the water boiling tank. This allows all the liquid to approach the heating element and be directly heated by the heating element, thereby improving the liquid heating efficiency and ensuring a consistent temperature within the water boiling tank. Using liquid with a consistent temperature to heat the product ensures uniform heating, thereby improving test accuracy.

[0056] Through information exchange between the controller and the target liquid level sensor in the liquid level adjustment unit, automatic monitoring and automatic adjustment of the liquid level in the boiling tank are achieved, thereby ensuring that the products in the boiling tank can be immersed in liquid during the test to ensure test accuracy.

[0057] Through information interaction between the controller, the minimum liquid level sensor and the heating element, heating of the liquid when the liquid level inside the boiling tank is low can be prevented, thereby ensuring safety.

[0058] While exemplary embodiments of the boiling water test device according to the present invention have been described in detail herein, it should be understood that the present invention is not limited to the specific embodiments described and illustrated above. Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the present invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The scope of the present invention is limited solely by the appended claims.

Claims

1. A boiling device for boiling test, characterized in that: The water boiling device (1) comprises a water boiling tank (2), a temperature regulating unit (3), a liquid level regulating unit (4) and a controller (5); The temperature regulating unit (3) comprises a heating element (31) and a temperature sensor (32) electrically connected to the controller (5), wherein the temperature sensor (32) senses temperature information (S1) of the liquid inside the water boiling tank (2) and sends the temperature information (S1) to the controller (5), wherein the temperature information (S1) is used to indicate the temperature value of the liquid; in response to the temperature value indicated by the temperature information (S1) from the temperature sensor (32) being lower than the target temperature, the controller (5) controls the heating element (31) to heat the liquid until the temperature of the liquid reaches the target temperature; and The liquid level regulating unit (4) comprises a target liquid level sensor (41) and a liquid replenishing assembly (42) electrically connected to the controller (5), wherein the target liquid level sensor (41) senses liquid level information (S2) of the liquid inside the water boiling tank (2) and sends the liquid level information (S2) to the controller (5), and the liquid level information (S2) is used to indicate the liquid level height of the liquid; in response to the liquid level height indicated by the liquid level information (S2) from the target liquid level sensor (41) being lower than the target liquid level, the controller (5) controls the liquid replenishing assembly (42) to supply liquid into the water boiling tank (2) until the liquid level height reaches the target liquid level.

2. The water boiling device according to claim 1, characterized in that The liquid level regulating unit (4) further comprises a minimum liquid level sensor (43) electrically connected to the controller (5), the minimum liquid level sensor (43) being used to sense minimum liquid level information (S3) and send the minimum liquid level information (S3) to the controller (5), the minimum liquid level information (S3) being used to indicate that the liquid level height of the liquid is lower than the minimum liquid level; The controller (5) controls the heating element (31) to stop heating the liquid in response to the minimum liquid level information (S3) from the minimum liquid level sensor (43).

3. The water boiling device according to claim 2, characterized in that: The water boiling device further comprises an alarm (51) connected to the controller (5), and the controller (5) controls the alarm (51) to issue an alarm message to the outside in response to the minimum liquid level information (S3).

4. The water boiling device according to claim 2 or 3, characterized in that: The target liquid level sensor (41) and the minimum liquid level sensor (43) are pressure-type target liquid level sensors, resistance-type target liquid level sensors, ultrasonic target liquid level sensors, or float-type target liquid level sensors.

5. The water boiling device according to any one of claims 1 to 3, characterized in that: The liquid replenishing assembly (42) comprises a liquid storage tank (421) and a liquid replenishing pump (422), wherein the liquid storage tank (421) stores liquid for the water boiling test; and the liquid replenishing pump (422) is electrically connected to the controller (5) and is used to pump the liquid from the liquid storage tank (421) into the interior of the water boiling tank (2).

6. The water boiling device according to any one of claims 1 to 3, characterized in that: The heating element (31) is an elongated element arranged at the bottom of the water boiling tank (2) along the length or width direction of the water boiling tank (2).

7. The water boiling device according to any one of claims 1 to 3, characterized in that: The temperature regulating unit (3) further comprises a liquid circulation component (33) connected to the controller (5), and the liquid circulation component (33) is used to circulate the liquid inside the water boiling tank (2) when the heating element (31) heats the liquid.

8. The water boiling device according to claim 7, characterized in that: The liquid circulation component (33) comprises a circulation pump (331), wherein the circulation pump (331) has a liquid inlet (332) and a liquid outlet (333), wherein the circulation pump (331) is electrically connected to the controller (5), and the liquid can enter the circulation pump (331) through the liquid inlet (332) and flow out of the circulation pump (331) through the liquid outlet (333), thereby driving the liquid to circulate inside the water boiling tank (2).

9. The water boiling device according to any one of claims 1 to 3, characterized in that: The temperature regulating unit (3) further comprises a temperature display screen (34) electrically connected to the controller (5); the temperature display screen (34) is arranged on the outer wall of the water boiling tank (2) and is used to display the temperature value of the liquid inside the water boiling tank (2).

10. The water boiling device according to any one of claims 1 to 3, characterized in that: The liquid level regulating unit (4) further comprises a liquid level display screen (44) electrically connected to the controller (5); the liquid level display screen (44) is arranged on the outer wall of the water boiling tank (2) and is used to display the liquid level height of the liquid inside the water boiling tank (2).

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