Liquid heater
By fixing the fuse tube on the steps of the heat insulation cover and combining it with an anti-collision buffer structure and a limiting strip, the problems of poor temperature sensing sensitivity of the fuse tube and short circuit caused by water infiltration in the liquid heater are solved, achieving higher safety and reliability.
Patent Information
- Application Number
- CN202520296310.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing liquid heaters have poor temperature sensing sensitivity due to the fusible tubes, and are prone to short circuits or circuit failures due to water penetration, affecting safety during use.
The fuse tube is fixed to the raised step in the middle of the heat insulation cover, so that it is close to the heating structure to enhance the temperature sensitivity. The anti-collision buffer structure and the limiting strip ensure that the glass pot is flat and prevent water penetration.
This improves the temperature sensitivity and timeliness of the fuse tube to the heating structure, reduces the impact of water penetration on the fuse tube, and enhances the safety and performance of the electrical appliance.
Smart Images
Figure CN223773516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of household appliance technology, and in particular to a liquid heater. Background Technology
[0002] Liquid heaters are common household appliances, typically using aluminum or copper heating elements. Currently, the most common household liquid heater is a glass kettle, usually made of borosilicate glass. This material has excellent heat resistance and chemical stability, allowing it to withstand significant temperature differences and ensuring safety during use. Borosilicate glass is lead-free, meets food safety standards, and does not release harmful substances, guaranteeing pure and healthy water. Furthermore, the high transparency of the glass allows users to clearly see the boiling process and changes in water volume, easily monitoring the boiling progress.
[0003] Common liquid heaters typically consist of a base and a glass container. The base has a heating element that heats the glass container. For safety, a fuse is also included in the base. When the trigger temperature is reached, the fuse breaks to prevent further heating. As the fuse works, when the set temperature is reached, the resistance of the temperature-sensing element in the fuse suddenly increases, preventing current flow and causing it to melt, thus protecting the circuit. However, conventional fuses are placed at the edge below the heating element, relatively far from the hot end, resulting in poor sensitivity. Furthermore, in practical use, we have found that this design is also prone to short circuits or circuit malfunctions when water seeps down from the base, affecting performance. Therefore, this application proposes a liquid heater to overcome the shortcomings of the prior art. Utility Model Content
[0004] This invention overcomes the shortcomings of the prior art and provides a liquid heater that helps improve the sensitivity, timeliness, and safety of the fusible tube's temperature sensing.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] A liquid heater includes a base and a glass vessel movably mounted on the base. The base is provided with a heating structure for heating the glass vessel, and the heating structure is electrically connected to a fuse tube. The base is provided with an enclosing heat insulation cover, and the heating structure is located in the heat insulation cover. A step is formed by the upward protrusion of the middle part of the heat insulation cover facing the heating structure, and the fuse tube is located on the step close to the heating structure to enhance the sensitivity of the fuse tube to the temperature of the heating structure.
[0007] Furthermore, the surface of the glass pot is provided with an anti-collision buffer structure to provide physical isolation between the outside world and the surface of the glass pot, thus forming a protective barrier; the anti-collision buffer structure is located on the outer peripheral wall or bottom surface of the glass pot.
[0008] Furthermore, the anti-collision buffer structure is located on the bottom surface of the glass pot near the radius (R-corner).
[0009] Furthermore, the anti-collision buffer structure can be any of the following: ring-shaped, linear, patterned, or dotted.
[0010] Furthermore, the inner wall of the base is provided with several limiting strips. When the glass pot is placed on the base, the limiting strips provide a limit around the glass pot, so that the bottom surface of the glass pot is flat and centered on the heating structure, thereby keeping the anti-collision buffer structure on the bottom surface of the glass pot away from the heating structure.
[0011] Furthermore, the glass kettle body is connected to a water tap, and a clearance space is provided on the base corresponding to the water tap.
[0012] Furthermore, the water outlet of the faucet is equipped with a rubber sleeve.
[0013] Furthermore, the glass pot body is cylindrical and has a handle.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention fixes the fuse tube in the upward-protruding step in the middle of the heat insulation cover, bringing the fuse tube closer to the heating structure. This helps to improve the sensitivity and timeliness of the fuse tube in sensing the temperature of the heating structure. In addition, since the fuse tube is located on the step at the top of the heat insulation cover, it is not easily wetted by water seeping down, thus improving the safety of electrical appliances. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 This is an overall diagram of the liquid heater of this utility model;
[0018] Figure 2 This is a schematic diagram of the liquid heater base of this utility model separated from the glass pot body;
[0019] Figure 3 This is a schematic diagram showing the support frame detached from the base;
[0020] Figure 4 This is a cross-sectional view of the middle section of the base;
[0021] Figure 5 This is a partial sectional view of the base structure;
[0022] Figure 6 This is a schematic diagram of one embodiment of the anti-collision buffer structure on the glass pot body.
[0023] In the diagram: 1. Base; 1011. Limiting strip; 1012. Clearance area; 2. Glass pot body; 201. Outer peripheral wall; 3. Heating structure; 4. Water tap; 5. Handle; 6. Fuse tube; 7. Anti-collision buffer structure; 8. Heat insulation cover; 801. Step; 9. Support frame; 10. Heat dissipation gap. Detailed Implementation
[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0025] like Figures 1 to 6 As shown, this utility model claims protection for a liquid heater, including a base 1 and a glass pot 2 movably mounted on the base 1. The base 1 is provided with a heating structure 3 for heating the glass pot 2, and the heating structure 3 is electrically connected to a fuse tube 6. In this embodiment, the glass pot 2 is cylindrical, which helps to increase its capacity. A handle 5 is provided on the glass pot 2 for easy lifting. The glass pot 2 is an all-glass pot. The heating structure 3 is in contact with the bottom surface of the glass pot 2 for heating it. The heating structure 3 is connected to the fuse tube 6. During heating, when the trigger temperature of the fuse tube 6 is reached, the fuse tube 6 melts, stopping the heating structure 3 and ensuring the safety of the product.
[0026] The base 1 is provided with a surrounding heat insulation cover 8, the heating structure 3 is located in the heat insulation cover 8, the opening of the heat insulation cover 8 is facing upward, and a heat dissipation gap 10 is maintained between the edge of the heating structure 3 and the heat insulation cover 8. The surrounding structure of the heat insulation cover 8 is conducive to surrounding and gathering the heat emitted from the bottom of the heating structure 3 and dissipating it upward through the heat dissipation gap 10, preventing it from spreading downward into the interior of the base 1.
[0027] One design feature of this application is that the heat shield 8 has a step 801 that protrudes upwards from the center of the side facing the heating structure 3, and the fuse tube 6 is located on the step 801 close to the heating structure 3. In this embodiment, the heating structure 3 is a heating plate structure using a heating wire, with the heating wire located on the bottom surface of the heating plate. Therefore, by placing the fuse tube 6 close to the heating wire of the heating structure 3, the high temperature generated by the heating wire will immediately trigger the fuse tube 6, thereby enhancing the sensitivity of the fuse tube 6 to the temperature of the heating structure 3. In addition, placing the fuse tube 6 on the step 801 not only keeps the fuse tube 6 away from the heat dissipation gap 10, but also places it in a high position, making it less likely to be wetted by water and affect its use.
[0028] In this embodiment, the surface of the glass pot body 2 is provided with an anti-collision buffer structure 7 to provide physical isolation between the outside world and the surface of the glass pot body 2, thus forming protection; the anti-collision buffer structure 7 is located on the outer peripheral wall 201 or bottom surface of the glass pot body 2; the anti-collision buffer structure 7 can be any one of the following: ring-shaped, linear, patterned, or dotted.
[0029] Furthermore, such as Figure 6 As shown, the anti-collision buffer structure 7 is located on the bottom surface of the glass pot body 2 near the R-corner; therefore, when taking the glass pot body 2 out of the container, the bottom surface of the glass pot body 2 will not directly contact the external object and cause a collision; the anti-collision buffer structure 7 is made of rubber or plastic materials, preferably silicone, which has a better buffering effect.
[0030] The inner wall of the base 1 is provided with several limiting strips 1011. When the glass pot 2 is placed on the base 1, the limiting strips 1011 form a limiting position around the glass pot 2, so that the bottom surface of the glass pot 2 is flat and centered on the heating structure 3, so that the anti-collision buffer structure 7 located on the bottom surface of the glass pot 2 is away from the heating structure 3.
[0031] As explained above, an anti-collision buffer structure 7 is provided on the bottom surface of the glass pot 2 near the R-corner. If the glass pot 2 is tilted to the side, causing the anti-collision buffer structure 7 to come into contact with the surface of the heating structure 3, it will cause the glass pot 2 to be uneven, which is not conducive to heating and is also easy to cause the anti-collision buffer structure 7 to melt due to high temperature. Therefore, by setting a limiting strip 1011 in the base 1, the bottom surface of the glass pot 2 is made flat and centered in the heating structure 3, while the anti-collision buffer structure 7 can be located on the periphery of the heating structure 3 and will not be heated.
[0032] The glass kettle body 2 is connected to a water tap 4, and a clearance position 1012 is provided on the base 1 corresponding to the water tap 4 to match the setting of the water tap 4, resulting in a compact structure.
[0033] Preferably, a rubber sleeve is provided at the water outlet of the faucet 4; the rubber sleeve is a hollow cylinder that is embedded in the water outlet of the faucet 4, that is, by installing the rubber sleeve, the water outlet of the faucet 4 is made smaller, which forms a certain constraint on the downward flowing water and prevents the water from spreading and splashing.
[0034] This utility model discloses a liquid heater. By fixing the fuse tube 6 in the upward-protruding step 801 in the middle of the heat insulation cover 8, the fuse tube 6 is brought closer to the heating structure 3, which helps to improve the sensitivity and timeliness of the fuse tube 6 to the temperature of the heating structure 3. In addition, it is not easy to be wetted by the water that seeps down, thus improving the safety of the electrical appliance.
[0035] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A liquid heater characterised in that, The utility model provides a glass kettle, including base (1) and glass kettle body (2) which is movably arranged on the base (1), the base (1) is provided with heating structure (3) for heating glass kettle body (2), and the heating structure (3) is electrically connected with the fuse tube (6), the base (1) is provided with surrounding heat shield (8), and the heating structure (3) is located in the heat shield (8), the middle portion of the heat shield (8) side towards the heating structure (3) is formed with the step (801) upwards, and the fuse tube (6) is located on the step (801) and is close to the heating structure (3), so as to enhance the sensitivity of the fuse tube (6) to the heating structure (3) temperature sensing.
2. The liquid heater of claim 1, wherein, The surface of the glass kettle body (2) is provided with an anti-collision buffer structure (7) to physically isolate the glass kettle body (2) from the outside environment and provide protection.
3. A liquid heater as claimed in claim 2, characterised in that, The anti-collision buffer structure (7) is located on the bottom surface of the glass kettle body (2) near the R corner.
4. A liquid heater as claimed in claim 2 or 3, characterised in that, The anti-collision buffer structure (7) can be ring-shaped, linear, patterned, or dotted.
5. The liquid heater of claim 3, wherein, The inner wall of the base (1) is circumferentially provided with a plurality of limiting strips (1011), which limit the glass kettle body (2) when placed on the base (1), so that the bottom surface of the glass kettle body (2) is flat and centered on the heating structure (3), and the anti-collision buffer structure (7) on the bottom surface of the glass kettle body (2) is away from the heating structure (3).
6. The liquid heater of claim 3, wherein, The glass kettle body (2) is connected with a water outlet faucet (4), and the base (1) is provided with an avoidance position (1012) corresponding to the water outlet faucet (4).
7. A liquid heater as claimed in claim 6, characterised in that The water outlet faucet (4) is provided with a rubber sleeve.
8. The liquid heater of claim 1, wherein, The glass kettle body (2) is a straight cylinder, and the glass kettle body (2) is provided with a handle (5).