Water temperature and water level two-in-one sensor convenient to produce and assemble and water boiler

Abstract

The utility model discloses a water temperature and water level two-in-one sensor convenient to produce and assemble, which comprises a stainless steel shell, a water temperature sensor, a water level sensor, a water level sensor, a water level sensor and a water level sensor, the insulating part is arranged on the periphery of the stainless steel shell in a sleeving mode, the front end of the insulating part is of an irregular structure along the axis, insulating part external threads are arranged at the rear end of the insulating part, and the insulating part is fixedly connected with a stainless steel inner container of the water boiler through an insulating part nut; the water temperature detection assembly comprises a temperature sensor, a water temperature signal connecting line and a water temperature signal line connector; the water level detection assembly comprises a conductive ring, a water level signal line and a water level signal line connector. The utility model further discloses the water boiler. Through structural improvement, the assembly process is simplified, the insulation performance and the sealing reliability are enhanced, the liquid heating device is suitable for water boiling machines and other liquid heating devices needing water temperature and water level detection, the production efficiency is effectively improved, and the use risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bathroom technology. More specifically, this utility model relates to a water temperature and water level combined sensor and a water dispenser that are convenient for production and assembly. Background Technology

[0002] In hot water heating equipment such as water dispensers, water temperature and level detection are crucial functions to ensure safe operation. Traditionally, water temperature and level detection are typically achieved by separate components, requiring separate mounting holes and wiring harnesses within the equipment's interior. This leads to complex assembly processes, low production efficiency, and the potential for positional deviations during multi-component installation, affecting detection accuracy.

[0003] While some integrated sensors attempt to combine two functions, they suffer from significant drawbacks. For example, the planar insulating gasket structure is prone to scale or water droplets accumulating on its surface over long-term use, leading to decreased insulation between the stainless steel shell and the inner tank and causing misjudgments of water level. Furthermore, during installation, the seal must be forcibly inserted into the inner tank opening; the sharp edges of the opening can easily damage the seal, creating a risk of leakage. Some minor damage is difficult to detect during production inspection, posing a safety hazard for long-term equipment use. The root cause of these problems lies in the unreasonable insulation structure design, the reliance on manual installation, and the lack of reliable positioning and protection measures, resulting in insufficient sensor reliability and production adaptability.

[0004] Therefore, there is an urgent need for a combined water temperature and water level sensor that can simplify the production and assembly process, enhance scale resistance, and improve sealing reliability, in order to meet the industry's demand for efficient production and long-term stable operation of equipment. Summary of the Invention

[0005] This utility model provides a water temperature and water level combined sensor and a water dispenser that are convenient for production and assembly. It can solve the problems of complicated assembly caused by the separation of traditional water temperature and water level detection components, the susceptibility of the integrated sensor's insulation structure to scale, and the easy damage of the seals during installation. Through structural improvement, the assembly process is simplified, and the insulation performance and sealing reliability are enhanced. It is suitable for liquid heating equipment such as water dispensers that require water temperature and water level detection, effectively improving production efficiency and reducing usage risks.

[0006] To achieve these objectives and other advantages according to this utility model, a combined water temperature and water level sensor that is convenient for production and assembly is provided, comprising:

[0007] A stainless steel shell with a hollow cavity inside, and an external thread at the rear end of the stainless steel shell.

[0008] An insulating component is fitted around the outer periphery of the stainless steel shell. The front end of the insulating component has an irregular structure along the axis, and the rear end of the insulating component is provided with an external thread. It is fixedly connected to the stainless steel inner tank of the water dispenser through an insulating nut.

[0009] A water temperature detection component includes a temperature sensor, a water temperature signal connection line, and a water temperature signal line connector. The temperature sensor is fixed to the front end of the hollow cavity. The portion of the temperature sensor and the water temperature signal connection line is fixed in the hollow cavity by encapsulating with insulating glue. The temperature sensor, the water temperature signal connection line, and the water temperature signal line connector are electrically connected to form a temperature detection circuit.

[0010] The water level detection component includes a conductive ring, a water level signal line, and a water level signal line connector. The conductive ring is fitted onto the outer periphery of the external thread of the stainless steel shell. It is connected to the thread of the stainless steel shell by a stainless steel shell nut and pressed to form an electrical connection, so that the conductive ring is in close contact with the rear end of the stainless steel shell and forms an electrical connection. The conductive ring, the water level signal line, and the water level signal line connector are electrically connected to form a capacitive water level detection circuit of conductive ring-stainless steel shell-stainless steel inner liner.

[0011] In another technical solution, the irregular structure is a wavy variable diameter structure that is thinner at the front and thicker at the back.

[0012] In another technical solution, the stainless steel shell is provided with a stainless steel shell annular boss along the radial direction, and is assembled and connected with the insulating component.

[0013] In another technical solution, the insulating component is provided with an annular boss in the radial direction, located between the irregular structure and the external thread of the insulating component, and is pressed into contact with the nut of the insulating component by a washer.

[0014] In another technical solution, part of the stainless steel shell is a rod-shaped structure located between the front end and the protruding part of the stainless steel shell.

[0015] Water dispenser, including:

[0016] Stainless steel inner liner with mounting holes inside;

[0017] The sensor is fixedly connected to the mounting hole of the stainless steel inner liner via an insulating nut, and the stainless steel shell and the stainless steel inner liner form a capacitor.

[0018] This utility model has at least the following beneficial effects:

[0019] First, this utility model integrates water temperature and water level detection functions into the same sensor, reducing the number of mounting holes and wiring harness arrangement, and simplifying the assembly process. The temperature sensor, water temperature signal connection line, and water temperature signal line connector are electrically connected to form a temperature detection circuit. The stainless steel shell, conductive ring, water level signal line, and water level signal line connector are electrically connected to form a capacitive water level detection circuit with the stainless steel inner tank, ensuring reliable electrical connection. The insulating component is connected to the stainless steel inner tank of the water boiler through the insulating component nut, ensuring reliable insulation and enhancing insulation performance and sealing reliability. It is suitable for liquid heating equipment such as water boilers that require water temperature and water level detection, effectively improving production efficiency and reducing usage risks.

[0020] Secondly, the water heater temperature sensor of this utility model directly realizes water temperature detection. When water is added to the stainless steel inner tank, the capacitance between the stainless steel shell and the stainless steel inner tank will change. When the water level is filled to the point where it does not exceed the stainless steel shell, the capacitance change will reach its maximum value. This capacitance change can be used to realize capacitive water level detection. This capacitive water level detection can be used to determine whether there is water in the inner tank of the water heater, thereby solving the problem of dry burning of the water heater when there is no water.

[0021] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of a sensor according to one technical solution of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of a sensor according to one technical solution of this utility model;

[0024] Figure 3 An exploded view of a sensor according to one technical solution of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a water dispenser according to one technical solution of this utility model. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0028] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials described are commercially available. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] like Figures 1-3 As shown, this utility model provides a water temperature and water level combined sensor that is convenient for production and assembly, comprising:

[0030] A stainless steel shell 1 has a hollow cavity inside, and the rear end of the stainless steel shell 1 is provided with a stainless steel shell external thread 2.

[0031] The insulating component 3 is made of high-temperature resistant plastic and is fitted around the outer periphery of the stainless steel shell 1. The front end of the insulating component 3 has an irregular structure 4 along the axis. When the stainless steel inner tank 6 is filled with water for a long time or is used for a long time and then drained, there will be no poor insulation due to scale generated between the stainless steel inner tank 6 and the stainless steel shell 1. The rear end of the insulating component 3 is provided with an external thread 5. The insulating nut 16 is made of stainless steel and is fixedly connected to the stainless steel inner tank 6 of the water dispenser through the insulating nut 16.

[0032] A water temperature detection assembly includes a temperature sensor 7, a water temperature signal connection line 8, and a water temperature signal line connector 9. The temperature sensor 7 is fixed at the front end of the hollow chamber, preferably an NTC temperature sensor 7. The temperature sensor 7 and a portion of the water temperature signal connection line 8 are fixed in the hollow chamber by encapsulating with insulating glue. The encapsulating glue not only fixes the wire harness but also isolates the water body from the circuit to ensure high voltage resistance. The temperature sensor 7, the water temperature signal connection line 8, and the water temperature signal line connector 9 are electrically connected to form a temperature detection circuit.

[0033] The water level detection component includes a conductive ring 10, a water level signal line 11, and a water level signal line connector 12. The conductive ring 10 is fitted onto the outer periphery of the external thread 2 of the stainless steel shell. The stainless steel shell nut 15 is made of stainless steel. The stainless steel shell nut 15 is threadedly connected to the stainless steel shell 1 and pressed to form an electrical connection, so that the conductive ring 10 is in close contact with the rear end of the stainless steel shell 1 and forms an electrical connection. The conductive ring 10, the water level signal line 11, and the water level signal line connector 12 are electrically connected to form a capacitive water level detection circuit of conductive ring 10-stainless steel shell 1-stainless steel inner liner 6.

[0034] In the above technical solution, by integrating water temperature and water level detection functions into the same sensor, the number of mounting holes and wiring harness arrangement are reduced, simplifying the assembly process. The temperature sensor 7, water temperature signal connection line 8, and water temperature signal line connector 9 are electrically connected to form a temperature detection loop. The stainless steel shell 1, conductive ring 10, water level signal line 11, and water level signal line connector 12 are electrically connected to form a capacitive water level detection loop with the stainless steel inner tank 6, ensuring reliable electrical connection. The insulating component 3 is connected to the stainless steel inner tank 6 of the water boiler through the insulating component nut 16, ensuring reliable insulation and enhancing insulation performance and sealing reliability. It is suitable for liquid heating equipment such as water boilers that require water temperature and water level detection, effectively improving production efficiency and reducing usage risks.

[0035] In another technical solution, the irregular structure 4 is a wavy variable-diameter structure that is thinner at the front and thicker at the back. This increases the roughness and surface area of ​​the contact surface between the insulating component 3 and the inner liner, disrupting the continuity of scale adhesion and making it difficult for scale to form a dense layer on the surface. This effectively maintains the insulation performance and avoids misjudgment of water level caused by water droplets or scale.

[0036] In another technical solution, the stainless steel shell 1 is provided with a radially arranged annular boss 13, which is assembled and connected with the insulating component 3. The annular boss 13 and the insulating component 3 are assembled and connected to form a circumferential limiting structure, which prevents the insulating component 3 from rotating relative to the stainless steel shell 1 during assembly, ensuring accurate positioning of each component and avoiding the impact of positional deviation on detection accuracy and sealing effect.

[0037] In another technical solution, the insulating component 3 is provided with an annular boss retainer 14 along the radial direction. This retainer can be hexagonal to facilitate tightening with a wrench and prevent the entire sensor front end from rotating when the large nut is tightened. It is located between the irregular structure 4 and the external thread 5 of the insulating component, and is pressed into contact with the insulating nut 16 via a high-temperature resistant silicone gasket 17. When the insulating nut 16 is tightened, the insulating component 3 and the stainless steel inner liner 6 are tightly sealed to prevent leakage. The annular boss retainer 14, in conjunction with the gasket 17, provides force support when tightening the insulating nut 16, ensuring even distribution of tightening force and preventing excessive local pressure that could deform or damage the seal, thus improving sealing reliability and reducing the risk of leakage.

[0038] In another technical solution, part of the stainless steel shell 1 is a rod-shaped structure located between the front end and the protruding part of the stainless steel shell 1. The rod-shaped structure design brings the temperature sensor 7 closer to the center of the inner tank, facilitating rapid and accurate water temperature detection. At the same time, the potting treatment of the hollow cavity fixes the sensor and wiring harness, ensuring its stability and reliability during long-term use, unaffected by water flow impact.

[0039] like Figure 4 As shown, the water dispenser includes:

[0040] Stainless steel inner liner 6, which has mounting holes inside;

[0041] The sensor is fixedly connected to the mounting hole of the stainless steel inner liner 6 via an insulating nut 16, and the stainless steel shell 1 and the stainless steel inner liner 6 form a capacitor.

[0042] In the above technical solution, the temperature sensor 7 directly detects the water temperature. When water is added to the stainless steel inner tank 6, the capacitance between the stainless steel shell 1 and the stainless steel inner tank 6 changes. When the water level reaches the point where it does not exceed the stainless steel shell 1, the capacitance change reaches its maximum value. This capacitance change enables capacitive water level detection, which can be used to determine whether there is water in the water dispenser's inner tank, thus solving the problem of dry burning when the water dispenser is empty. The number of devices and processing scale described here are for simplification. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0043] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A water temperature and water level combined sensor that is convenient for production and assembly, characterized in that, include: A stainless steel shell with a hollow cavity inside, and an external thread at the rear end of the stainless steel shell. An insulating component is fitted around the outer periphery of the stainless steel shell. The front end of the insulating component has an irregular structure along the axis, and the rear end of the insulating component is provided with an external thread. It is fixedly connected to the stainless steel inner tank of the water dispenser through an insulating nut. A water temperature detection component includes a temperature sensor, a water temperature signal connection line, and a water temperature signal line connector. The temperature sensor is fixed to the front end of the hollow cavity. The portion of the temperature sensor and the water temperature signal connection line is fixed in the hollow cavity by encapsulating with insulating glue. The temperature sensor, the water temperature signal connection line, and the water temperature signal line connector are electrically connected to form a temperature detection circuit. The water level detection component includes a conductive ring, a water level signal line, and a water level signal line connector. The conductive ring is fitted onto the outer periphery of the external thread of the stainless steel shell. It is connected to the thread of the stainless steel shell by a stainless steel shell nut and pressed to form an electrical connection, so that the conductive ring is in close contact with the rear end of the stainless steel shell and forms an electrical connection. The conductive ring, the water level signal line, and the water level signal line connector are electrically connected to form a capacitive water level detection circuit of conductive ring-stainless steel shell-stainless steel inner liner.

2. The water temperature and water level combined sensor as described in claim 1, which is convenient for production and assembly, is characterized in that... The irregular structure is a wavy, variable-diameter structure that is thinner at the front and thicker at the back.

3. The water temperature and water level combined sensor as described in claim 1, characterized in that, The stainless steel shell is provided with a radially arranged annular boss for securing it, and is assembled and connected with the insulating component.

4. The water temperature and water level combined sensor as described in claim 1, which is convenient for production and assembly, is characterized in that... The insulating component is provided with an annular boss in the radial direction, located between the irregular structure and the external thread of the insulating component, and is pressed into contact with the nut of the insulating component by a washer.

5. The water temperature and water level combined sensor as described in claim 3, characterized in that, The stainless steel shell portion is a rod-shaped structure located between the front end and the protruding locking part of the stainless steel shell.

6. A water boiler, characterized in that, include: Stainless steel inner liner with mounting holes inside; The sensor according to any one of claims 1-5, wherein the sensor is fixedly connected to the mounting hole of the stainless steel inner liner via an insulating nut, and the stainless steel shell and the stainless steel inner liner form a capacitor.

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