Liquid heater for liquid level distance detection

Abstract

The utility model discloses a liquid heater for liquid level distance detection, belongs to the field of life electric appliances, solves the problem that a lead of a detection assembly for distance detection of liquid level is not restrained and is easy to shake, and adopts the technical scheme that the detection assembly for distance detection of liquid level is hidden between a shell and a glass cup body; the detection assembly comprises a detection plate provided with a detection electrode slice and an installation support for installing the detection plate, the installation support comprises an installation part tightly attached to the glass cup body to fix the detection plate and a limiting part located at the bottom end of the installation part, the installation part longitudinally extends along the outer wall of the glass cup body, and the limiting part is bent inwards relative to the installation part and is attached to the container; the limiting part is provided with a limiting hole, and a wire of the detection plate penetrates through the limiting hole to be limited. The utility model is mainly used for improving the stability of the wire and ensuring the reliability of long-term use.

Description

Technical Field

[0001] The utility model relates to a household electrical appliance, in particular to a liquid heater with remote liquid level detection. Background Art

[0002] Liquid heaters are common electrical appliances in daily life, such as water boilers, electric kettles, health kettles, etc., generally including a glass cup body and a heating plate. The heating plate and the glass cup body cooperate to form a container for holding liquid, and a heating tube arranged around the center of the heating plate is provided on one side of the heating plate. Some liquid heaters, such as health kettles, can be used to stew some ingredients, such as white fungus, etc., and more foam will be generated during actual use. In order to prevent the foam from overflowing, an overflow prevention structure will be provided. For example, the prior art CN 215127293U discloses a kettle, including: a kettle body 1, a heating component 2 and a thermostat 3 are provided at the bottom of the kettle body 1, and a temperature detector 4 for detecting the temperature in the kettle body 1 and a water level detector 5 for detecting the water level in the kettle body 1 are also provided on the kettle body 1; a circuit board 6 is provided at the bottom of the kettle body 1, and is electrically connected to the heating component 2, the thermostat 3, the temperature detector 4 and the water level detector 5 respectively, and the thermostat 3 can control the operation of the heating component 2 according to the temperature detected by the temperature detector 4 and the water level detected by the water level detector 5. Among them, the circuit board 6 is the main control PCB board, which can receive the temperature signal detected by the temperature detector 4 and the water level signal detected by the water level detector 5, and generate a control signal based on the above temperature signal and water level signal and send it to the temperature controller 3. In order to transmit the water level signal to the circuit board 6, the water level detector 5 needs to be electrically connected to the circuit board 6, wherein it is mentioned that the bottom of the water level detector 5 is bent toward one side of the kettle body 11, and is electrically connected to the circuit board 6 located in the installation cavity 101. However, the above-mentioned prior art does not mention the specific electrical connection method. Generally, it is realized by using wires. Since the water level detector 5 needs to detect multiple signals of different water levels, it needs to be electrically connected to the circuit board 6 through multiple wires. If these wires are not constrained, not only will the routing be chaotic, which is not conducive to subsequent inspection and maintenance, but it is also easy to shake during the transportation of the product, resulting in fatigue fracture at the welding point between the wire and the circuit board 6, affecting normal use. Utility Model Content

[0003] The purpose to be achieved by the utility model is to provide a liquid heater for remote liquid level detection, to solve the problem that the wires of the detection components used for remote liquid level detection are not restrained and are easy to shake, to improve the stability of the wires, and to ensure the reliability of long-term use.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a liquid heater for remote liquid level detection, comprising a glass cup body and a heating plate, the heating plate and the glass cup body cooperate to form a container for holding liquid, a shell is provided on the outside of the glass cup body, and a detection component for remote liquid level detection is hidden between the shell and the glass cup body, the detection component comprises a detection plate provided with a detection electrode sheet and a mounting bracket for mounting the detection plate, the mounting bracket comprises a mounting portion for fixing the detection plate tightly against the glass cup body and a limiting portion located at the bottom end of the mounting portion, the mounting portion extends longitudinally along the outer wall of the glass cup body, the limiting portion bends inwardly relative to the mounting portion and fits with the container, the limiting portion is provided with a limiting hole, and the wire of the detection plate is limited by passing through the limiting hole.

[0005] After adopting the above technical scheme, the utility model has the following advantages: the mounting bracket is not only used to press and fix the detection plate, but also to limit the wire of the detection plate through the limiting hole, so as to constrain the wire, facilitate the straightening of the wiring, and facilitate subsequent inspection and maintenance. Moreover, the wire is not easy to shake during the transportation of the product, and the welding part of the wire is not easy to be fatigued and fractured, ensuring the reliability of long-term normal use. The mounting part is close to the glass cup body, and at the same time, the limiting part is bent inward relative to the mounting part and fits with the container, and a longitudinal matching relationship is formed between the mounting part and the glass cup body, and a transverse matching relationship is formed between the limiting part and the container. The mounting part is close to the glass cup body, which can realize the inward positioning of the mounting bracket, and the limiting part fits with the container, which can realize the upward positioning of the mounting bracket, which can improve the convenience of the mounting bracket during assembly, improve the assembly efficiency and the one-time success rate, and can also improve the stability of the mounting bracket after being fixed, which is conducive to the fixing reliability of the detection plate and ensures the accuracy of water level detection.

[0006] Furthermore, the limiting portion includes a bending section and a limiting section, the top end of the bending section is connected to the mounting portion, the bending section fits the container, the limiting section is arranged at the bottom end of the bending section, and the limiting hole is arranged in the limiting section.

[0007] By adopting the above-mentioned technical solution, the fit between the limiting part and the container is improved. The limiting part can only fit with the outer wall of the glass cup body, or a part can fit with the outer wall of the glass cup body and the other part can fit with the outer bottom surface of the heating plate. The limiting hole is arranged at the bottom of the limiting part and is located at the bottom end of the bending section, that is, the projection on the horizontal plane is located on the inner side of the bottom end of the detection plate. After the wire is constrained, the wire can be guided to achieve natural bending to avoid hard bending. The location of the limiting hole can simultaneously overcome the influence of gravity on the wire, support the wire, reduce the influence of vibration generated during transportation on the wire, and improve the stability of the wire.

[0008] Furthermore, the limiting section extends downward so that the limiting hole faces the central area of ​​the heating plate.

[0009] By adopting the above-mentioned technical solution, the limit section can extend downward to lower the height position of the limit hole, increase the height distance between the wire and the heating plate, reduce the impact of high temperature on the wire, and at the same time, the limit hole is facing the center area of ​​the heating plate, so that the wire can extend smoothly to the upper coupler.

[0010] Furthermore, the outer wall of the curved section is provided with a guide groove arranged along the extending direction of the curved section, and the wire of the detection board at least partially falls into the guide groove.

[0011] The above technical solution is adopted to improve the guiding effect of the wire.

[0012] Furthermore, the outer wall of the curved section is recessed to form a guide groove; or, the outer wall of the curved section is provided with at least two reinforcing ribs, the reinforcing ribs are arranged along the extending direction of the curved section, and a guide groove is formed between two adjacent reinforcing ribs.

[0013] By adopting the above technical solution, the guide groove has a simple structure, is easy to form, and has low production cost.

[0014] Furthermore, the limiting section has a thin slit on one side of the limiting hole, and the limiting section is deformed to expand the thin slit so that the wire of the detection board can be inserted into the limiting hole.

[0015] By adopting the above-mentioned technical solution, you can choose to pass the wire through the limiting hole and then weld it to the upper coupler, or you can choose to weld the other end of the wire to the upper coupler and then clip the wire into the limiting hole, which diversifies the assembly methods and improves the assembly freedom.

[0016] Furthermore, the bottom end of the glass body has a flange extending inwardly, and the curved section extends in contact with the outer side wall of the glass body and the outer bottom surface of the flange.

[0017] By adopting the above-mentioned technical solution, the curved section only fits with the outer wall of the glass body, and the fit is better.

[0018] Furthermore, the mounting portion is adhered to the outer wall of the glass body by glue.

[0019] The above technical solution is adopted to facilitate assembly and improve production efficiency.

[0020] Furthermore, the mounting portion includes two first brackets extending in the height direction and connected to each other and limiting ribs that limit the detection plate from being away from the glass cup body. The detection plate is located between the two first brackets and is pressed by the limiting ribs, and glue is filled between the two first brackets.

[0021] The above-mentioned technical solution is adopted to improve the fit between the detection plate and the outer wall of the glass body.

[0022] Furthermore, the two first brackets are connected by limiting ribs; or, the two first brackets are connected by connecting ribs, and there is a gap between the connecting ribs and the detection plate; or, the two ends of the two first brackets are connected by a second bracket, and the second bracket is connected to the first bracket to form a closed frame to prevent glue from overflowing.

[0023] By adopting the above-mentioned technical solution, diversified structural options can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Figure 1 It is a cross-sectional view of a container in a liquid heater with liquid level remote detection according to the utility model;

[0026] Figure 2 for Figure 1 The enlarged view of point I in the middle;

[0027] Figure 3 It is a schematic diagram of a container in a liquid heater with liquid level remote detection according to the utility model;

[0028] Figure 4 It is a schematic diagram of the mounting bracket in the utility model;

[0029] Figure 5 It is a schematic diagram of the mounting portion of the mounting bracket of the utility model (I);

[0030] Figure 6 It is a schematic diagram of the mounting portion of the mounting bracket of the utility model (II);

[0031] Figure 7 Schematic diagram of the mounting portion of the mounting bracket of the utility model (III);

[0032] Figure 8 Schematic diagram of the mounting portion of the mounting bracket of the utility model (IV);

[0033] Fig. 9 The utility model is a schematic diagram of a liquid heater with remote liquid level detection. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0035] The terms "first", "second", etc. (if any) in the specification and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily mean that it has "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present utility model, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0036] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0037] like Figures 1 to 4 As shown, the utility model provides a liquid heater for remote detection of liquid level, comprising a glass cup body 100 and a heating plate 200, the heating plate 200 cooperates with the glass cup body 100 to form a container for holding liquid, a shell 300 is provided on the outer side of the glass cup body 100, a detection component 400 for remote detection of liquid level is hidden between the shell 300 and the glass cup body 100, the detection component 400 comprises a detection plate 41 provided with a detection electrode sheet and a mounting bracket 42 for mounting the detection plate 41, the mounting bracket 42 comprises a mounting portion 421 for fixing the detection plate 41 tightly against the glass cup body 100 and a limiting portion 422 located at the bottom end of the mounting portion 421, the mounting portion 421 extends longitudinally along the outer wall of the glass cup body 100, the limiting portion 422 bends inwardly relative to the mounting portion 421 and fits with the container, the limiting portion 422 is provided with a limiting hole 4221, and the wire of the detection plate 41 is limited by passing through the limiting hole 4221.

[0038] The shell 300 may only cover a portion of the outer wall of the glass body 100, for example Figure 1The middle shell 300 is designed with a handle 31, which can cover the detection board assembly, so that the user can observe the working conditions inside the container through the glass cup body 100, thereby improving the user experience. The shell 300 can also completely cover the outer wall of the glass cup body 100 to protect the glass cup body 100, and an observation window can be opened on the shell 300 to observe the working conditions inside the container. It is a prior art that the detection board 41 realizes the function of liquid level detection, which is generally realized by a sensing electrode sheet. For details, please refer to the signal PCB board mentioned in the prior art CN106108646A, which will not be repeated here.

[0039] The glass cup body 100 can generally be a simple glass product, and the detection component is in direct contact with the glass material. The glass cup body 100 can also include a glass substrate and a film. The film is arranged on the outer side of the glass substrate and can cover part or all of the outer side of the glass substrate. Some marks, such as water level marks, prompt marks, etc., are set on the film. At this time, the outer wall of the glass cup body 100 is the outer side of the film, and the detection component is in contact with the film. In addition, a silk-screen shielding layer, such as ink or film, can be set on the outer wall of the glass cup body 100 to prevent the user from directly observing the detection component through the glass cup body 100 from the inside of the glass cup body 100, thereby improving the aesthetics. The silk-screen shielding layer is considered to be a part of the glass cup body 100, and the outer wall of the glass cup body 100 is the outer side of the silk-screen shielding layer, and the detection component is in contact with the silk-screen shielding layer.

[0040] In the present invention, the mounting bracket 42 is not only used to press and fix the detection plate 41, but also to limit the wire of the detection plate 41 through the limiting hole 4221, so as to constrain the wire, facilitate the straightening of the wiring, facilitate subsequent inspection and maintenance, and the wire is not easy to shake during the transportation of the product, and the welding part of the wire is not easy to be fatigued and fractured, ensuring the reliability of long-term normal use. The mounting portion 421 is close to the glass cup body 100, and the limiting portion 422 is bent inward relative to the mounting portion 421 and fits with the container. A longitudinal matching relationship is formed between the mounting portion 421 and the glass cup body 100, and a transverse matching relationship is formed between the limiting portion 422 and the container. The mounting portion 421 is close to the glass cup body 100, which can realize the inward positioning of the mounting bracket 42, and the limiting portion 422 fits with the container, which can realize the upward positioning of the mounting bracket 42, which can improve the convenience of the mounting bracket 42 during assembly, improve the assembly efficiency and the first-time success rate, and also improve the stability of the mounting bracket 42 after being fixed, which is conducive to the fixing reliability of the detection plate 41 and ensures the accuracy of water level detection.

[0041] In one embodiment, in order to improve the fit between the limiting portion 422 and the container, and also facilitate the smooth routing of the wires of the detection board 41 to avoid hard bending, the limiting portion 422 can be designed to include a curved section 4222 and a limiting section 4223, the top of the curved section 4222 is connected to the mounting portion 421, the curved section 4222 fits the container, the limiting section 4223 is provided at the bottom of the curved section 4222, and the limiting hole 4221 is provided in the limiting section 4223. The curved section 4222 fits the container, and can only fit the outer wall of the glass cup body 100, or a part of it can fit the outer wall of the glass cup body 100 and the other part can fit the outer bottom surface of the heating plate 200. The limiting hole 4221 is arranged at the bottom of the limiting part 422 and at the bottom end of the curved section 4222, that is, the projection on the horizontal plane is located on the inner side of the bottom end of the detection plate 41. After the wire is constrained, the wire can be guided to achieve natural bending to avoid hard bending. Since the limiting part 422 in this embodiment adopts a relatively simple structure and only one limiting hole 4221 is provided, the location of the limiting hole 4221 can simultaneously overcome the gravity effect of the wire, support the wire, reduce the impact of vibration generated during transportation on the wire, and improve the stability of the wire. If the limiting effect of the wire is to be increased, the limiting hole 4221 can also be provided in the longitudinal extension part of the curved section 4222.

[0042] Since the heating tube 21 is generally arranged near the edge of the heating plate 200, the upper coupler 51 is arranged in the central area of ​​the heating plate 200, and the wire will extend to the upper coupler 51 for electrical connection, in order to guide the wire to run smoothly, in one embodiment, the limit section 4223 can be designed to extend downward so that the limit hole 4221 faces the central area of ​​the heating plate 200. After the limit section 4223 extends downward, the height position of the limit hole 4221 can be lowered, so that the height distance of the wire from the heating plate 200 is increased, and the influence of high temperature on the wire is reduced. At the same time, the limit hole 4221 faces the central area of ​​the heating plate 200, which facilitates the wire to smoothly extend to the upper coupler 51.

[0043] In order to improve the guiding effect of the wire, a guide groove 4224 arranged along the extension direction of the curved section 4222 may be provided on the outer wall of the curved section 4222, and the wire of the detection board 41 at least partially falls into the guide groove 4224. As for the structure of the guide groove 4224, the guide groove 4224 may be formed by a depression on the outer wall of the curved section 4222, or at least two reinforcing ribs 4225 may be provided on the outer wall of the curved section 4222, and the reinforcing ribs 4225 are arranged along the extension direction of the curved section 4222, and the guide groove 4224 is formed between two adjacent reinforcing ribs 4225.

[0044] Since the wire is generally welded and fixed to the detection plate 41 first, in order to facilitate the wire to pass through the limiting hole 4221, the limiting section 4223 can be designed to have a slit 4226 on one side of the limiting hole 4221, and the limiting section 4223 deforms to expand the slit 4226 for the wire of the detection plate 41 to be inserted into the limiting hole 4221. In this way, the wire can be welded and fixed to the upper coupler 51 after passing through the limiting hole 4221, or the other end of the wire can be welded and fixed to the upper coupler 51 before the wire is inserted into the limiting hole 4221, which diversifies the assembly methods and improves the assembly freedom.

[0045] As mentioned above, the curved section 4222 can only fit the outer wall of the glass body 100. Specifically, in one embodiment, the bottom end of the glass body 100 has a flange 11 extending inward, and the curved section 4222 extends in contact with the outer side wall of the glass body 100 and the outer bottom surface of the flange 11. The curved section 4222 only fits the outer wall of the glass body 100, and because the material is single and the thermal expansion is uniform, the fit is better.

[0046] In order to fix the mounting bracket 42, a variety of methods can be used. For example, in one embodiment, the mounting portion 421 is adhered to the outer wall of the glass cup body 100 by glue. In order to improve the fit between the detection plate 41 and the outer wall of the glass cup body 100, the mounting portion 421 can be designed to include two first brackets 4211 extending in the height direction and connected to each other and a limiting rib 4212 that limits the detection plate 41 from being away from the glass cup body 100. The detection plate 41 is located between the two first brackets 4211 and is pressed by the limiting rib 4212, and the glue is filled between the two first brackets 4211. In addition to fixing by glue, the mounting bracket 42 can be pressed after the housing 300 and the glass cup body 100 are fixed, or the mounting bracket 42 is fixed by a clamp, etc.

[0047] Specifically, the structure of the mounting portion 421 can be further refined.

[0048] Since the mounting portion 421 and the limiting portion 422 are an integrally formed structure, the two first brackets 4211 may also be connected only through the limiting portion 422 .

[0049] On the basis that the two first brackets 4211 are connected by the limiting portion 422, Figure 4 As shown, the two first brackets 4211 are connected by limiting ribs 4212. The limiting ribs 4212 can be crisscrossed between the two first brackets 4211 to form a plurality of glue-filling grids 4213.

[0050] In another embodiment, it is also possible to Figure 5As shown, the two first brackets 4211 are connected by a connecting rib 4214, and there is a gap between the connecting rib 4214 and the detection plate 41, that is, the connecting rib 4214 is different from the limiting rib 4212 and does not play a limiting role.

[0051] Or in another embodiment, Figure 6 As shown, the two ends of the two first brackets 4211 can be connected by a second bracket 4215. In addition to connecting the first brackets 4211, the second bracket 4215 can also be connected to the first bracket 4211 to form a closed frame to prevent glue from overflowing.

[0052] When two first brackets 4211 are connected by the connecting rib 4214, the second bracket 4215 or the limiting portion 422, the limiting rib 4212 may also connect the two first brackets 4211 or not connect the two first brackets 4211. The limiting rib 4212 may also not be connected to the two first brackets 4211, but connected to the connecting rib 4214 or the second bracket 4215, for example Figure 7 and Figure 8 shown.

[0053] refer to Fig. 9 The liquid heater of the utility model also includes a power base 600, which is provided with a lower coupler 61. The container is placed on the power base 600 to obtain working power, specifically, the upper coupler 51 and the lower coupler 61 are plugged and electrically coupled to obtain power.

[0054] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A liquid heater with remote liquid level detection, comprising a glass body and a heating plate, wherein the heating plate and the glass body cooperate to form a container for containing liquid, characterized in that: A shell is provided on the outside of the glass cup body, and a detection component for detecting the liquid level in the air is hidden between the shell and the glass cup body. The detection component includes a detection board provided with a detection electrode sheet and a mounting bracket for mounting the detection board. The mounting bracket includes a mounting portion for fixing the detection plate close to the glass cup body and a limiting portion located at the bottom end of the mounting portion. The mounting portion extends longitudinally along the outer wall of the glass cup body, the limiting portion bends inwardly relative to the mounting portion and fits with the container, the limiting portion is provided with a limiting hole, and the wire of the detection board is limited by passing through the limiting hole.

2. The liquid heater with remote liquid level detection according to claim 1, characterized in that: The limiting portion includes a bending section and a limiting section, the top of the bending section is connected to the mounting portion, the bending section fits the container, the limiting section is arranged at the bottom of the bending section, and the limiting hole is arranged in the limiting section.

3. The liquid heater with remote liquid level detection according to claim 2, characterized in that: The limiting section extends downward so that the limiting hole faces the central area of ​​the heating plate.

4. The liquid heater with remote liquid level detection according to claim 2, characterized in that: The outer wall of the curved section is provided with a guide groove arranged along the extending direction of the curved section, and the wire of the detection board at least partially falls into the guide groove.

5. The liquid heater with remote liquid level detection according to claim 4, characterized in that: The outer wall of the curved section is recessed to form a guide groove; or, the outer wall of the curved section is provided with at least two reinforcing ribs, the reinforcing ribs are arranged along the extending direction of the curved section, and a guide groove is formed between two adjacent reinforcing ribs.

6. The liquid heater with remote liquid level detection according to claim 2, characterized in that: The limiting section has a thin slit on one side of the limiting hole, and the limiting section is deformed to expand the thin slit so that the wire of the detection plate can be inserted into the limiting hole.

7. The liquid heater with remote liquid level detection according to claim 2, characterized in that: The bottom end of the glass body has a flange extending inward, and the curved section extends in contact with the outer side wall of the glass body and the outer bottom surface of the flange.

8. The liquid heater with remote liquid level detection according to claim 1, characterized in that: The mounting portion is adhered to the outer side wall of the glass body by glue.

9. The liquid heater with remote liquid level detection according to claim 8, characterized in that: The mounting portion includes two first brackets extending in the height direction and connected to each other and limiting ribs that limit the detection plate from being away from the glass cup body. The detection plate is located between the two first brackets and is pressed by the limiting ribs. Glue is filled between the two first brackets.

10. The liquid heater with remote liquid level detection according to claim 9, characterized in that: The two first brackets are connected by limiting ribs; or, the two first brackets are connected by connecting ribs, and there is a gap between the connecting ribs and the detection plate; or, the two ends of the two first brackets are connected by a second bracket, and the second bracket is connected to the first bracket to form a closed frame to prevent glue from overflowing.

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