Liquid heater

Abstract

The utility model discloses a liquid heater, which belongs to the field of life electric appliances, solves the problem of liquid level detection deviation caused by unreliable fixation of a detection plate, and adopts the technical scheme that a detection component extending along the height direction is arranged on the outer side of a glass cup body and is hidden between the glass cup body and a shell; the detection assembly comprises a detection plate used for detecting the liquid level across the air, induction metal sheets are longitudinally distributed on the detection plate, the peripheral edge of the side, facing the glass cup body, of the detection plate is coated with glue and fixedly connected with the glass cup body, and the middle area of the side, facing the glass cup body, of the detection plate is tightly attached to the outer side wall of the glass cup body. According to the utility model, glue is mainly utilized to occupy the space between the detection plate and the glass cup body, so that the fixing reliability of the detection plate is improved, the gaps between the detection plate and the glass cup body are uniformly distributed, the induction metal sheet can be better clung to the glass cup body, good detection sensitivity is ensured, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to, in particular to a liquid heater. Background Art

[0002] When cooking or boiling food in a liquid heating container, the food will produce some non-liquid water or other liquid substances during the cooking process. For example, when making soy milk or boiling rice porridge, some soybeans or white rice are first added to the liquid, and the liquid bean mixture or liquid rice mixture is heated using a heating device such as a heating tube in the liquid heating container. During the cooking process, the liquid bean mixture or liquid rice mixture will produce some slurry substances such as bubbles, foam, and pulp.

[0003] In the prior art, in order to prevent the slurry substance from rising to a high height and overflowing from the liquid heating container, a detection plate for remote detection is generally provided on the liquid heating container. For example, the prior art CN106108646A discloses a food cooking machine, which includes a cup body, a knife group, a cup fixing seat and a control circuit board; the knife group is arranged at the bottom of the cup body, the cup body is fixed to the cup fixing seat, an electric heating element is arranged in the cup fixing seat, a signal PCB board is provided on the circumferential side wall of the cup body, and a metal sheet is provided on the signal PCB board; the knife group, the electric heating element and the signal PCB board are all connected to the control circuit board. The signal PCB is positioned between the handle and the cup body. The metal sheet on the signal PCB forms a capacitor with the food inside. As the volume of the food increases, the capacitance of the capacitor changes. This changes the capacitor's charge and discharge, generating a charge transfer signal on the signal PCB. The signal PCB transmits this charge transfer signal to the control circuit board, which receives and uses it to determine the volume of the food inside. If the food volume exceeds a preset value, the control circuit board sends a signal to control the power of the electric heater or blade assembly, thereby controlling the volume of the food inside the cup and effectively preventing overflow. The metal sheet and signal PCB do not come into direct contact with food, requiring no cleaning and enhancing ease of use.

[0004] The outer surface of the cup body is curved, and the signal PCB board generally adopts a flat structure. The signal PCB board and the cup body cannot be completely fitted together. The middle area of ​​the signal PCB board in the width direction can only fit closely against the outer wall of the cup body. A large gap will be formed between the edges of the signal PCB board and the outer wall of the cup body. If the signal PCB board is not fixed reliably, the gap distribution on both sides of the middle area of ​​the signal PCB board will be uneven, which will cause deviations in liquid level detection. For example, the detection sensitivity will be reduced due to the excessive gap between the metal sheet and the cup body. The detection accuracy will also be affected due to the different gap sizes at different height positions. Utility Model Content

[0005] The purpose of the present invention is to provide a liquid heater to solve the problem of deviation in liquid level detection caused by unreliable fixation of the detection plate. Glue is used to occupy the space between the detection plate and the glass cup body, thereby improving the reliability of the fixation of the detection plate and making the gap between the detection plate and the glass cup body evenly distributed, so that the sensing metal sheet can be better attached to the glass cup body, ensuring good detection sensitivity and improving detection accuracy.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a liquid heater, including a glass cup body and a shell, the shell is located on the outside of the glass cup body, and the outside of the glass cup body is provided with a detection component extending in the height direction, and the detection component is hidden between the glass cup body and the shell. The detection component includes a detection plate for detecting the liquid level in the air, and the detection plate is longitudinally distributed with sensing metal sheets. The edges of the detection plate facing the glass cup body are coated with glue and fixedly connected to the glass cup body, so that the middle area of ​​the detection plate facing the glass cup body is close to the outer wall of the glass cup body.

[0007] After adopting the above technical scheme, the utility model has the following advantages: by applying glue on the edges of the detection plate facing the glass cup body, the connection stability between the detection plate and the glass cup body is improved, the reliability of the fixation of the detection plate is improved, and the packaging of the sensing metal sheet can be realized, reducing the influence of external factors on the sensing metal sheet, obtaining a good working environment, and ensuring the detection sensitivity and service life of the sensing metal sheet; at the same time, glue is used to fill the gap between the surface of the detection plate facing the glass cup body and the outer wall of the glass cup body. Before the glue solidifies, the size of the gap on both sides of the middle area can be more conveniently adjusted to make the gap distribution more even; during the glue solidification process, a certain force is applied to the detection plate, so that the middle area of ​​the detection plate facing the glass cup body is close to the outer wall of the glass cup body. After the glue solidifies, the middle area of ​​the detection plate facing the glass cup body can remain close to the outer wall of the glass cup body, reducing the influence of air on liquid level detection.

[0008] Furthermore, the outer wall of the glass body has a mounting area, and a second gap is formed between the two longitudinal edges of the detection plate facing the glass body and the surface of the mounting area, and the glue fills the second gap to squeeze out the air therein.

[0009] By adopting the above-mentioned technical solution, the glue fills the second gap to squeeze out the air therein, thereby reducing the influence of the air on the liquid level detection.

[0010] Furthermore, the surface of the installation area is an arc-shaped surface, the surface of the detection plate facing the glass body is a plane, and a second gap is formed between two longitudinal edges of the plane and the arc-shaped surface.

[0011] By adopting the above technical solution and utilizing the unsolidified state of the glue, the position relationship of the detection plate relative to the installation area can be well adjusted, so that the second gap can be symmetrically distributed about the longitudinal symmetry line of the detection plate.

[0012] Furthermore, the detection component also includes a mounting bracket, a groove is provided on the side of the mounting bracket facing the glass cup body, the detection plate is positioned in the groove, and the mounting bracket presses the detection plate against the outer wall of the glass cup body.

[0013] The above-mentioned technical solution is adopted to improve the reliability of the detection board fixation. At the same time, the positioning effect of the detection board can be improved and protection can be provided for the detection board by installing the bracket, which is conducive to the long-term stable operation of the detection board.

[0014] Furthermore, the detection plate is fixed to the mounting bracket by glue, and the mounting bracket and the detection plate are fixed to the outer wall of the glass cup body by glue after the glue fixing the detection plate solidifies; or, the mounting bracket and the detection plate are fixed to the outer wall of the glass cup body by glue respectively.

[0015] By adopting the above technical solution and providing the mounting bracket, it is possible to achieve a variety of ways to fix the detection board.

[0016] Furthermore, the mounting bracket includes two first brackets extending in the height direction and connected to each other, and a limiting rib that presses the detection plate. The two first brackets are hollowed out to form a groove. The limiting rib rests on the side of the detection plate facing away from the glass cup body, and the side of the detection plate facing away from the glass cup body is encapsulated by glue.

[0017] By adopting the above-mentioned technical solution and installing the hollow design of the bracket, not only is the structure itself simple, but it is also convenient to glue the side of the detection board away from the glass cup body, thereby improving the protection effect of the detection board and being more conducive to the long-term stable operation of the detection board.

[0018] Furthermore, a first gap is provided between the longitudinal edge of the detection board and the two first brackets, and the glue for fixing the detection board fills the first gap.

[0019] By adopting the above-mentioned technical solution, the glue entering the first gap not only increases the connection reliability between the longitudinal edge of the detection plate and the two first brackets, but also can utilize the elasticity of the glue after solidification to achieve elastic positioning of the detection plate in the width direction, reduce the rigid impact of the installation bracket on the detection plate, and ensure the position stability of the detection plate relative to the glass cup body.

[0020] Furthermore, the limiting rib extends transversely and connects the two first brackets; or, the limiting rib is provided on one of the first brackets and extends toward the hollow area between the two first brackets, and the limiting rib is not connected to the other first bracket.

[0021] By adopting the above technical solution, the limiting rib not only serves as a limiting detection plate, but also serves to connect the two first brackets.

[0022] Furthermore, the two ends of the first bracket are connected by a second bracket, and the second bracket is connected with the first bracket to form a frame structure, and the groove is located in the frame structure.

[0023] By adopting the above-mentioned technical solution, after the second bracket is connected and enclosed with the first bracket to form a frame structure, the structural strength of the installation bracket can be improved, the structural stability is better, it can be more conducive to the positioning and packaging of the detection board, and the frame structure can also be used to prevent glue overflow during the process of gluing the side of the detection board away from the glass cup body.

[0024] Furthermore, a third gap is formed between the second bracket and the upper and lower ends of the detection board, and the glue for fixing the detection board fills the third gap.

[0025] By adopting the above-mentioned technical solution, the glue entering the third gap not only increases the connection reliability between the upper and lower ends of the detection plate and the two second brackets, but also can utilize the elasticity of the glue after solidification to achieve elastic positioning of the detection plate in the height direction, reduce the rigid impact of the installation bracket on the detection plate, and ensure the position stability of the detection plate relative to the glass cup body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of a glass cup body, a detection component and a shell in a liquid heater of the present invention;

[0028] Figure 2 This is a schematic diagram of a cross section of a glass cup body at a certain height in the present invention;

[0029] Figure 3 for Figure 2 The enlarged view of point I in the middle;

[0030] Figure 4 This is a schematic diagram of the outer side of the glass in the present invention;

[0031] Figure 5 This is a schematic diagram of the mounting bracket in the present utility model;

[0032] Figure 6 for Figure 4 Enlarged view of position II in the middle;

[0033] Figure 7 This is a schematic diagram of a cross section of the glass body at a certain height in the present invention (with a mounting bracket);

[0034] Figure 8for Figure 7 Enlarged view of point III in the middle. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0036] The terms "first," "second," and so on (if any) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or precedence. Even if "second" is used before a technical feature to distinguish it, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. It should be understood that in this utility model, "plurality" refers to two or more. "And / or" is merely a description of an association between related objects, indicating that three relationships can exist. For example, "X and / or Y" can mean: X exists alone, X and Y exist simultaneously, or Y exists alone. The character " / " generally indicates that the related objects are in an "or" relationship. "Including X, Y, and Z" means that all three of X, Y, and Z are included. "Including X, Y, or Z" means that one of X, Y, and Z is included. "Including X, Y, and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0037] The following specific embodiments are used to describe the technical solution of the present invention 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.

[0038] The utility model provides a liquid heater, such as Figures 1 to 3 As shown, it includes a glass cup body 100 and a shell 300, the shell 300 is located on the outside of the glass cup body 100, and the outside of the glass cup body 100 is provided with a detection component 400 extending in the height direction, and the detection component 400 is hidden between the glass cup body 100 and the shell 300. The detection component 400 includes a detection plate 41 for detecting the liquid level in the air, and a sensing metal sheet 411 is longitudinally distributed on the detection plate 41. The detection plate 41 is coated with glue 9 on the four edges facing the side of the glass cup body 100 and is fixedly connected to the glass cup body 100, so that the middle area of ​​the detection plate facing the side of the glass cup body is close to the outer wall of the glass cup body 100.

[0039] The utility model improves the connection stability between the detection plate 41 and the glass cup body 100 and the reliability of the fixation of the detection plate 41 by applying glue on the four edges of the detection plate 41 facing the glass cup body 100, and can also realize the packaging of the sensing metal sheet 411, reduce the influence of external factors on the sensing metal sheet 411, obtain a good working environment, and ensure the detection sensitivity and service life of the sensing metal sheet 411; at the same time, glue is used to fill the gap between the surface of the detection plate 41 facing the glass cup body 100 and the outer wall of the glass cup body 100. Before the glue solidifies, the size of the gap on both sides of the middle area can be more conveniently adjusted to make the gap distribution more uniform; during the glue solidification process, a certain force is applied to the detection plate 41, so that the middle area of ​​the detection plate facing the glass cup body is close to the outer wall of the glass cup body 100. After the glue solidifies, the middle area of ​​the detection plate facing the glass cup body can remain close to the outer wall of the glass cup body 100, reducing the influence of air on liquid level detection. Currently, the common glass cup body 100 is generally a rotating body structure, for example, the basic shape is a cylindrical structure with basically equal diameters from top to bottom, or a conical structure with a small diameter at the top and a large diameter at the bottom, or a drum-shaped structure with a small diameter at the top, a large diameter at the bottom and a middle part protruding outward relative to the bottom, etc. Therefore, the outer wall of the glass cup body 100 is generally a curved structure, and the detection plate 41 generally adopts a flat structure. The middle area of ​​the detection plate 41 facing the glass cup body refers to the area centered in the width direction and extending in the height direction. When the detection plate 41 is close to the outer wall of the glass cup body 100, only a part of it can fit with the outer wall of the glass cup body 100. The sensing metal sheet 411 is generally arranged in the center relative to the detection plate 41 in the width direction. At least a part of the sensing metal sheet 411 is located in this middle area. Therefore, through the force applied to the detection plate 41, the middle area of ​​the detection plate facing the glass cup body can be close to the outer wall of the glass cup body 100, minimizing the distance between the sensing metal sheet 411 and the glass cup body 100. It can be understood that in some embodiments, the detection plate 41 can be made into a curved structure that fits the arc surface structure, and the sensing metal sheet 411 is also made into a curved structure accordingly. Although the production cost will be relatively increased, when the middle area of ​​the detection plate facing the glass cup side is close to the outer wall of the glass cup body, the overall fitting area and fit degree of the detection plate and the outer wall of the glass cup body 100 can also be improved.

[0040] 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 provided 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 provided 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-screened shielding layer, such as ink or film, can be provided 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-screened 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-screened shielding layer, and the detection component is in contact with the silk-screened shielding layer.

[0041] A heating plate is provided at the bottom of the glass body 100. The heating plate and the glass body 100 cooperate to form a container for holding liquid. A heating tube is provided on one side of the heating plate, which surrounds the center of the heating plate. The heating tube can heat the food in the container. The shell 300 can only cover a part of the outer wall of the glass body 100, for example Figure 1 The middle shell 300 is designed with a handle 31. As long as it can cover the detection component 400, 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. Accordingly, an observation window can be opened on the shell 300 for convenient observation of the working conditions inside the container. The detection board 41 realizes the function of liquid level detection, which is a prior art and 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.

[0042] To facilitate the clear installation location of the detection plate 41, in one embodiment, the outer wall of the glass body 100 can be designed to have a mounting area. A second gap 402 is defined between the two longitudinal edges of the detection plate 41 facing the glass body 100 and the surface of the mounting area. Glue fills the second gap 402 to displace air trapped therein, reducing its impact on liquid level detection. The mounting area can be distinguished from the rest of the outer wall of the glass body 100 by adjusting its surface roughness or shape.

[0043] As mentioned above, the outer wall of the currently common glass cup body 100 is generally a curved surface structure. In order to reduce production costs, the installation area is a part of the outer wall of the glass cup body 100, which is generally also a curved surface. The surface of the detection plate 41 facing the glass cup body 100 is a plane, and a second gap 402 is formed between the two longitudinal edges of the plane and the curved surface. In this case, the position of the detection plate 41 relative to the installation area can be well adjusted by utilizing the state of the glue before it solidifies, so that the second gap 402 can be symmetrically distributed about the longitudinal symmetry line of the detection plate 41. In another embodiment, the installation area can also be processed into a planar structure, so that the surface of the detection plate 41 facing the glass cup body 100 can better fit the installation area, and the second gap 402 is relatively easier to distribute evenly.

[0044] The following combination Figures 4 to 8 look.

[0045] To improve the reliability of the fixing of the detection plate 41, in one embodiment, the detection assembly 400 can be designed to further include a mounting bracket 42. The mounting bracket 42 has a groove 420 on the side facing the glass body 100. The detection plate 41 is positioned in the groove 420, and the mounting bracket 42 presses the detection plate 41 against the outer wall of the glass body 100. The mounting bracket 42 can improve the positioning of the detection plate 41 and provide protection for the detection plate 41, which is conducive to the long-term stable operation of the detection plate 41.

[0046] After the mounting bracket 42 is provided, a variety of methods for fixing the detection board 41 can be implemented. For example, in one embodiment, the detection board 41 can be fixed to the mounting bracket 42 by glue. After the glue fixing the detection board 41 solidifies, the mounting bracket 42 and the detection board 41 are bonded together and fixed to the outer wall of the glass body 100 by glue. For example, in another embodiment, the mounting bracket 42 and the detection board 41 are separately bonded and fixed to the outer wall of the glass body 100 by glue. The detection board 41 and the mounting bracket 42 can be bonded and fixed to the outer wall of the glass body 100 successively, or the detection board 41 can be positioned on the mounting bracket 42 and then glued and fixed to the outer wall of the glass body 100 by applying glue.

[0047] Specifically regarding the structure of the mounting bracket 42, in one embodiment, the mounting bracket 42 includes two first brackets 421 extending and interconnected in the height direction, and a retaining rib 423 that presses against the detection plate 41. The space between the two first brackets 421 is hollowed out to form a groove 420. The retaining rib 423 abuts the side of the detection plate 41 facing away from the glass body 100. The side of the detection plate 41 facing away from the glass body 100 is sealed with glue. The hollow design of the mounting bracket 42 not only simplifies its structure, but also facilitates the glue sealing of the side of the detection plate 41 facing away from the glass body 100, thereby improving the protection of the detection plate 41 and facilitating the long-term stable operation of the detection plate 41.

[0048] To improve the connection reliability between the detection plate 41 and the mounting brackets 42, a first gap 401 can be designed between the longitudinal edge of the detection plate 41 and the two first brackets 421. The glue used to secure the detection plate 41 fills the first gap 401. The glue entering the first gap 401 not only increases the connection reliability between the longitudinal edge of the detection plate 41 and the two first brackets 421, but also utilizes the elasticity of the solidified glue to achieve elastic positioning of the detection plate 41 in the width direction, reducing the rigid impact of the mounting brackets 42 on the detection plate 41 and ensuring the positional stability of the detection plate 41 relative to the glass body 100.

[0049] In one embodiment, the limiting rib 423 extends transversely and connects the two first brackets 421. In another embodiment, the limiting rib 423 may be provided on one of the first brackets 421 and extend toward the hollowed-out area between the two first brackets 421, with the limiting rib 423 not connected to the other first bracket 421. In this manner, the two first brackets 421 may be connected by a connecting rib, which does not contact the side of the detection plate 41 facing away from the glass body 100 and does not function as a limiting rib 423.

[0050] In addition to being connected by retaining ribs 423 or connecting ribs, in another embodiment, the two first brackets 421 can be connected at both ends by a second bracket 422. The second bracket 422 and the first bracket 421 are connected to form a frame structure, with the groove 420 located within the frame structure. The second bracket 422 and the first bracket 421 are connected to form a frame structure, which can improve the structural strength of the mounting bracket 42 and provide greater structural stability. This can also facilitate the positioning and packaging of the detection board 41. The frame structure can also be used to prevent glue overflow during the glue packaging process on the side of the detection board 41 facing away from the glass body 100. Of course, on this basis, the two first brackets 421 can still be connected by retaining ribs 423 or connecting ribs, and the retaining rib 423 can also be connected only to the second bracket 422. The side of the frame structure formed by the second bracket 422 and the first bracket 421 facing the glass body 100 can be designed to conform to the outer wall of the glass body 100. This can improve the fit between the frame structure and the outer wall of the glass body 100 and reduce glue overflow between the two.

[0051] Similar to first gap 401, a third gap 403 can be formed between the second bracket 422 and the upper and lower ends of the detection plate 41, and the glue used to secure the detection plate 41 fills third gap 403. The glue entering third gap 403 not only increases the connection reliability between the upper and lower ends of the detection plate 41 and the two second brackets 422, but also utilizes the elasticity of the solidified glue to achieve elastic positioning of the detection plate 41 in the height direction, reducing the rigid impact of the mounting bracket 42 on the detection plate 41 and ensuring the positional stability of the detection plate 41 relative to the glass body 100.

[0052] In addition to the above-mentioned preferred embodiments, the present invention has other implementation methods. 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, comprising a glass body and a shell, wherein the shell is located outside the glass body, characterized in that: The outer side of the glass cup body is provided with a detection component extending in the height direction. The detection component is hidden between the glass cup body and the shell. The detection component includes a detection plate for detecting the liquid level in the air. Sensing metal sheets are longitudinally distributed on the detection plate. The edges of the detection plate facing the glass cup body are coated with glue and fixedly connected to the glass cup body, so that the middle area of ​​the detection plate facing the glass cup body is close to the outer wall of the glass cup body.

2. The liquid heater according to claim 1, characterized in that The outer wall of the glass body has a mounting area, and a second gap is formed between the two longitudinal edges of the detection plate facing the glass body and the surface of the mounting area. The second gap is filled with glue to squeeze out the air therein.

3. The liquid heater according to claim 2, characterized in that: The surface of the installation area is an arc-shaped surface, the surface of the detection plate facing the glass body is a plane, and a second gap is formed between two longitudinal edges of the plane and the arc-shaped surface.

4. The liquid heater according to claim 1, characterized in that The detection assembly also includes a mounting bracket, a groove is provided on a side of the mounting bracket facing the glass body, the detection plate is positioned in the groove, and the mounting bracket presses the detection plate against the outer wall of the glass body.

5. The liquid heater according to claim 4, characterized in that: The detection plate is fixed to the mounting bracket by glue, and the mounting bracket and the detection plate are fixed to the outer wall of the glass cup body by glue after the glue fixing the detection plate solidifies; or, the mounting bracket and the detection plate are fixed to the outer wall of the glass cup body by glue respectively.

6. The liquid heater according to claim 4, characterized in that The mounting bracket includes two first brackets extending in the height direction and connected to each other, and a limiting rib that presses the detection plate. The two first brackets are hollowed out to form a groove. The limiting rib is against the side of the detection plate away from the glass cup body. The side of the detection plate away from the glass cup body is sealed by glue.

7. The liquid heater according to claim 6, characterized in that There is a first gap between the longitudinal edge of the detection board and the two first brackets, and the glue for fixing the detection board fills the first gap.

8. The liquid heater according to claim 6, characterized in that The limiting rib extends transversely and connects the two first brackets; or, the limiting rib is arranged on one of the first brackets and extends to the hollow area between the two first brackets, and the limiting rib is not connected to the other first bracket.

9. The liquid heater according to claim 6, characterized in that: The two ends of the first bracket are connected by a second bracket, and the second bracket is connected with the first bracket to enclose and form a frame structure, and the groove is located in the frame structure.

10. The liquid heater according to claim 9, characterized in that A third gap is formed between the second bracket and the upper and lower ends of the detection board, and the glue for fixing the detection board fills the third gap.

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