Liquid heating device, intelligent toilet and intelligent cover plate

Abstract

The embodiment of the present disclosure discloses a liquid heating device, an intelligent toilet and an intelligent cover plate, and relates to kitchen and bathroom technology. The liquid heating device comprises a box body having a containing space containing liquid, a heating mechanism comprising a power supply circuit and a heating assembly, a temperature fuse connected to the power supply circuit, and a shell assembly provided with a mounting groove. The temperature fuse is mounted in the mounting groove and partially protrudes from the groove opening of the mounting groove. After the shell assembly is mounted on the box body, the temperature fuse can abut against a monitoring area on the outer wall of the box body, thereby ensuring that the temperature fuse can be effectively attached to the monitoring area, directly contact heat conduction, and have higher heat conduction efficiency. The temperature fuse is more sensitive to the over-temperature triggering and fusing action, so that the temperature fuse cuts off the power supply circuit and stops supplying power to the heating assembly when the temperature of the temperature fuse is higher than a preset value. The box body can seal the groove opening, and the heat preservation effect is better than that of an insulating rubber sleeve, thereby ensuring the timeliness of the temperature fuse fusing.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to, but is not limited to, kitchen and bathroom technology, and in particular to a liquid heating device, a smart toilet and a smart cover plate. BACKGROUND

[0002] At present, the smart toilet and the smart cover plate are basically configured with a liquid heating device to improve the user's flushing comfort. The liquid heating device is generally powered by strong electricity. In order to ensure the safety of users, measures such as over-temperature protection and dry burning protection are configured on the heating assembly to ensure that the heating assembly can detect abnormal working conditions when the liquid heating device is abnormal, so as to disconnect the power supply and avoid accidents such as scalding and fire.

[0003] At present, the commonly used dry burning protection measure is to connect a temperature fuse in series at the live line end of the water heating system power supply circuit. In order to prevent leakage, an insulating sleeve is used to cover the temperature fuse and the wire interface during connection. The two ends of the insulating sleeve are sealed by heat shrink or hot melt pressure connection method at a position away from the temperature fuse to eliminate the risk of leakage.

[0004] The temperature fuse triggers the melting action by exceeding the temperature control point of heat conduction, and is limited by the transportation and storage conditions. The temperature control point of the temperature fuse cannot be set too low. The sealing and insulating effect of the insulating sleeve reduces the rate of heat conduction to the temperature fuse (heat is conducted from the heat source to the insulating sleeve, and then to the air between the insulating sleeve and the temperature fuse). At the same time, the insulating sleeve also dissipates heat to the surrounding air, resulting in a decrease in the heat conduction energy of the insulating sleeve to the internal temperature fuse. The whole heat conduction process has the problems of low heat conduction efficiency and serious heat loss, thereby greatly reducing the protection effect of the whole temperature fuse. SUMMARY

[0005] The present disclosure provides a liquid heating device, a smart toilet and a smart cover plate, which aims to solve the technical problems of low heat conduction efficiency and serious heat loss in the process of heat conduction to the temperature fuse in the existing sealing and insulating structure.

[0006] The present disclosure provides a liquid heating device, comprising:

[0007] A box body capable of enclosing a containing space for containing a liquid, an outer wall of the box body having a monitoring area;

[0008] A heating mechanism comprising a power supply circuit and a heating assembly, the power supply circuit being electrically connected to the heating assembly and configured to supply power to the heating assembly, the heating assembly being arranged in the box body and at least partially accommodated in the containing space, the heating assembly being configured to heat the liquid;

[0009] a temperature fuse connected to the power supply circuit, the temperature fuse being configured to cut off the power supply circuit when a temperature of the temperature fuse is higher than a preset value; and

[0010] a housing assembly provided with a mounting groove, the temperature fuse being mounted in the mounting groove and partially protruding from a groove opening of the mounting groove, the housing assembly being mounted on the box and abutting the temperature fuse against the monitoring area, the box being capable of sealingly covering the groove opening.

[0011] The present disclosure also provides a smart toilet comprising:

[0012] a toilet body; and

[0013] The liquid heating device as described above.

[0014] The present disclosure also provides a smart cover plate comprising:

[0015] a smart cover plate host; and

[0016] The liquid heating device as described above.

[0017] Implementing the embodiments of the present disclosure will have the following beneficial effects:

[0018] The liquid heating device of the above-mentioned scheme is applied in the smart toilet and the smart cover plate. In addition to being used to improve the temperature of the flushing liquid and the seat heating liquid and improve the comfort of the user, it can also improve the efficiency of heat conduction to the temperature fuse and the triggering sensitivity, avoid heat loss during heat conduction, and improve the protection effect of the temperature fuse on the smart toilet and the smart cover plate. Specifically, the liquid heating device comprises a box having a liquid containing space, a heating mechanism comprising a power supply circuit and a heating assembly, a temperature fuse connected to the power supply circuit, and a housing assembly provided with a mounting groove. The temperature fuse is mounted in the mounting groove and partially protrudes from the groove opening of the mounting groove. After the housing assembly is mounted on the box, the temperature fuse can abut against the monitoring area located on the outer wall of the box, thereby ensuring that the temperature fuse can effectively adhere to the monitoring area, directly contact heat conduction, and have higher heat conduction efficiency. The temperature fuse is more sensitive to the temperature fuse over-temperature triggering and fusing action, so that the temperature fuse cuts off the power supply circuit when the temperature of the temperature fuse is higher than the preset value, and stops supplying power to the heating assembly. The box can seal the groove opening, and the heat preservation effect is better than that of the insulating rubber sleeve, which ensures that the heat at the monitoring area position will not be dissipated into the air, and ensures the timeliness of the temperature fuse fusing.

[0019] Other features and advantages of the present disclosure will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present disclosure. Other advantages of the present disclosure can be realized and obtained by the schemes described in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute a limitation on the technical solutions of the present disclosure.

[0021] Figure 1 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0022] Figure 2 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 1 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0023] Figure 3 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0024] Figure 4 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 3 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0025] Figure 5 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 3 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0026] Figure 6 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0027] Figure 7 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0028] Figure 8 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0029] Figure 9 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0030] Figure 10 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 9 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0031] Figure 11 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0032] Figure 12 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 11 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0033] Figure 13 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 11 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1.

[0034] Figure 14 A structural schematic diagram of a liquid heating device in an embodiment of the present disclosure is shown in FIG. 1. Figure 13Enlarged structural schematic view of the middle F portion;

[0035] Figure 15A And Figure 15B Schematic view of temperature fuse in series with strong power supply circuit in liquid heating device in an embodiment of the present disclosure;

[0036] Figure 16A And Figure 16B Schematic view of temperature fuse in series with control power supply circuit in liquid heating device in an embodiment of the present disclosure;

[0037] Figure 17A And Figure 17B Schematic view of temperature fuse in series with weak power supply circuit in liquid heating device in an embodiment of the present disclosure.

[0038] BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 10, box body; 11, first clamping assembly; 111, first abutting arm; 1111, first abutting surface; 1112, first guide structure; 112, second abutting arm; 1121, second abutting surface; 1122, second guide structure; 113, connecting arm; 114, supporting arm; 12, second clamping assembly; 121, third abutting arm; 13, first connecting piece; 14, clamping portion;

[0040] 20, temperature fuse; 21, body portion; 22, wire portion;

[0041] 30, shell assembly; 31, body; 311, guide wall; 312, transition surface; 313, circumferential wall; 314, first guide surface; 315, abutting structure; 32, frame body; 321, side wall; 3211, first stop portion; 3212, guide portion; 3213, second stop portion; 322, connecting plate; 3221, protruding portion; 3222, second guide surface; 33, second connecting piece; 331, reinforcing plate; 34, first abutting protrusion; 341, third guide structure; 35, first elastic arm; 36, second elastic arm; 37, second abutting protrusion; 371, fourth guide structure; 38, step structure;

[0042] 40, power supply;

[0043] 50, lead wire;

[0044] 60, sealing member;

[0045] 70, threaded member;

[0046] 80, temperature control switch; 81, abutting portion;

[0047] 91, control power supply circuit; 92, heating assembly; 93, firewire; 94, zero line; 95, main control board; 96, relay; 97, weak current line;

[0048] 100, monitoring area; 200, installation slot; 201, slot opening; 300, first slot body; 400, first wire slot; 500, fixing slot; 600, wire containing slot; 700, recess; 800, wire passing hole; 900, second slot body; 1000, annular slot; 1100, positioning slot.

[0049] The implementation, functional features and advantages of the present disclosure will be further described with reference to the embodiments in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0050] The present disclosure describes a plurality of embodiments, but the description is exemplary rather than limiting, and it will be apparent to those of ordinary skill in the art that there can be more embodiments and implementations within the scope of the embodiments described in the present disclosure. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Unless specifically intended otherwise, any feature or element of any embodiment can be used in combination with any other feature or element of any other embodiment, or can replace any other feature or element in any other embodiment.

[0051] The present disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present disclosure can also be combined with any conventional features or elements to form unique inventive solutions defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present disclosure can be implemented alone or in any appropriate combination. Accordingly, the embodiments are not to be limited by other than according to the claims made and their equivalents. Moreover, various modifications and changes can be made within the scope of the appended claims.

[0052] Moreover, in describing representative embodiments, the specification can have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process depends on the particular order of steps, this description should not be construed as limiting the method or process to the particular order presented. Other steps can be performed in between steps described without departing from the spirit of the method or process. For example, the steps can be performed in an order other than that presented and still achieve the desired result. Accordingly, the specific order of steps presented in the specification should not be construed as a limitation on the method or process. Additionally, the description of a particular step should not be construed as requiring that step be performed as described. Rather, the description of a particular step should be construed as an example of the step, and the step can be performed differently without departing from the spirit of the method or process.

[0053] At present, the intelligent toilet and the intelligent cover plate are basically configured with a liquid heating device for improving the flushing comfort of the user. The liquid heating device is generally powered by strong electricity. In order to ensure the safety of the user, measures such as over-temperature protection and dry burning protection are configured on the heating assembly, so as to ensure that the heating assembly is abnormally operated when the liquid heating device is abnormal, so as to disconnect the power supply and avoid accidents such as scalding and fire.

[0054] At present, the commonly used dry burning protection measure is to connect a temperature fuse in series at the live wire end of the water heating system power supply circuit. In order to prevent leakage, an insulating sleeve is used to cover the temperature fuse and the wire interface during connection. The two ends of the insulating sleeve are sealed by heat shrink or hot melt pressure connection at a position away from the temperature fuse, so as to eliminate the risk of leakage.

[0055] The temperature fuse triggers the melting action by heat conduction exceeding the temperature control point, and is limited by the transportation and storage conditions. The temperature control point of the temperature fuse cannot be set too low. The sealing and insulating effect of the insulating sleeve reduces the heat conduction rate to the temperature fuse (heat is conducted from the heat source to the insulating sleeve, and then to the air between the insulating sleeve and the temperature fuse) during the sealing process. At the same time, the insulating sleeve also dissipates heat to the surrounding air, which reduces the heat conduction energy of the insulating sleeve to the internal temperature fuse. The whole heat conduction process has problems such as low heat conduction efficiency, serious heat loss, etc., which greatly reduces the protection effect of the whole temperature fuse.

[0056] The embodiments of the present disclosure provide a liquid heating device, an intelligent toilet and an intelligent cover plate. The intelligent toilet and the intelligent cover plate can be installed in various environments such as companies, schools, families and factories to improve and enhance the quality of life and health of people. The intelligent toilet comprises a toilet body and a liquid heating device. The liquid heating device is arranged in the toilet body and can be connected with an external liquid path to heat liquid and deliver the heated liquid to a flushing mechanism and a seat heating mechanism arranged in the toilet body, so as to improve the comfort of users. The intelligent cover plate can replace the cover plate of a common toilet to make the common toilet have intelligent functions. The intelligent cover plate comprises an intelligent cover plate host and a liquid heating device. The liquid heating device is arranged in the intelligent cover plate host and can be connected with an external liquid path to heat liquid and deliver the heated liquid to a flushing mechanism and a seat heating mechanism arranged in the intelligent cover plate host, so as to improve the comfort of users. The liquid includes but is not limited to clean water or pure water from a municipal water network.

[0057] Please refer to Figures 1 to 3 、 Figure 16A and Figure 16B together, the liquid heating device provided by the embodiments of the present disclosure will be described. The liquid heating device comprises a box body 10, a heating mechanism, a temperature fuse 20 and a shell assembly 30. The box body 10 can enclose a containing space for containing liquid and can be connected with an external liquid path. The outer wall of the box body 10 has a monitoring area 100. The monitoring area 100 can be any position of the outer wall, and preferably is a position corresponding to a position of the outer wall with a higher temperature caused by the use of the heating mechanism.

[0058] The heating mechanism comprises a power supply circuit and a heating assembly 92. The power supply circuit is electrically connected with the heating assembly 92 and is arranged to supply power to the heating assembly 92. The heating assembly 92 is arranged in the box body 10 and at least partially accommodated in the containing space. The heating assembly 92 is arranged to heat the liquid. The heating assembly 92 comprises a fixing member and a heating member. The fixing member is fixed to the box body 10, and the heating member is interconnected with the fixing member and accommodated in the containing space. The power supply circuit can transmit the electric energy provided by a power supply 40 to the heating member through the fixing member, so that the heating member generates heat radiation to heat the liquid. The heating member can be but is not limited to an electric heating wire, a thermistor or an electric heating film.

[0059] Since the distance from the position of the heating member in the containing space to each position of the outer wall is not completely the same, the position of the outer wall close to the heating member is heated by the heat radiation provided by the heating member and has a higher temperature, so that the position can be set as the monitoring area 100.

[0060] The temperature fuse 20 is connected to the power supply circuit, and is configured to cut off the power supply circuit when the temperature of the temperature fuse 20 is higher than a preset value. The temperature fuse 20 can be, but is not limited to, an organic temperature fuse, a porcelain tube temperature fuse, or a square shell temperature fuse.

[0061] The housing assembly 30 is provided with a mounting groove 200, and the temperature fuse 20 is mounted in the mounting groove 200 and partially protrudes from a groove opening 201 of the mounting groove 200. The size of the temperature fuse 20 protruding from the groove opening 201 can be about 0.2 mm to 0.5 mm, for example, the size of the temperature fuse 20 protruding from the groove opening 201 can be about 0.35 mm.

[0062] The housing assembly 30 is mounted on the box body 10 and abuts the temperature fuse 20 to the monitoring area 100, and the box body 10 can cover and seal the groove opening 201.

[0063] The combination of the temperature fuse 20 and the housing assembly 30 does not need to use a heat shrink or hot melt crimping method to close and seal the insulating sleeve, which improves the yield rate in the production process and reduces the risk of misoperation.

[0064] In addition, the insulating sleeve also has a risk of melting and burning. After melting and burning, one end of the temperature fuse 20 still has strong electricity, and there is a risk of electric leakage. In the embodiment of the present disclosure, the housing assembly 30 can be made of a material with a high melting point, and the sealing reliability of the housing assembly 30 and the box body 10 is better, which improves the safety performance of the exposed electric leakage of the temperature fuse 20.

[0065] In summary, the implementation of the embodiments of the present disclosure will have the following beneficial effects: the liquid heating device of the above-mentioned scheme is applied to the intelligent toilet and the intelligent cover plate, which can not only improve the temperature of the flushing liquid and the seat heating liquid and improve the user comfort, but also improve the efficiency and triggering sensitivity of heat conduction to the temperature fuse 20, avoid heat loss in the heat conduction process, and improve the protection effect of the temperature fuse 20 on the intelligent toilet and the intelligent cover plate. Specifically, the liquid heating device includes a box body 10 having a containing space containing liquid, a heating mechanism including a power supply circuit and a heating assembly 92, a temperature fuse 20 connected to the power supply circuit, and a housing assembly 30 provided with a mounting groove 200. Among them, the temperature fuse 20 is installed in the mounting groove 200 and partially protrudes from the slot 201 of the mounting groove 200, and after the housing assembly 30 is installed on the box body 10, the temperature fuse 20 can abut against the monitoring area 100 located on the outer wall of the box body 10, so as to ensure that the temperature fuse 20 can be effectively attached to the monitoring area 100 and directly contact the heat conduction, the heat conduction efficiency is higher, and the temperature fuse 20 is more sensitive to the over-temperature triggering action of the temperature fuse 20, so that the temperature fuse 20 cuts off the power supply circuit when the temperature of the temperature fuse 20 is higher than the preset value, and stops supplying power to the heating assembly 92. The box body 10 can cover and seal the slot 201, and the heat preservation effect is better than that of the insulating rubber sleeve, which ensures that the heat at the monitoring area 100 position will not be dissipated to the air, and ensures the timeliness of the temperature fuse 20.

[0066] In the exemplary embodiments, please combine Figures 5 to 9 , Figure 11 and Figure 13 , the housing assembly 30 includes a body 31 and a frame 32. The body 31 is installed on the box body 10, and the mounting groove 200 is arranged on the body 31, so that the slot 201 can be sealed after the body 31 is installed on the box body 10. The frame 32 is provided with a first groove 300, and the frame 32 is installed in the mounting groove 200. The frame 32 can be detachably connected with the body 31 through the mounting groove 200, so as to facilitate the disassembly, replacement and assembly of the temperature fuse 20.

[0067] The temperature fuse 20 includes a body part 21 and two wire parts 22 respectively arranged at both ends of the body part 21, and the body part 21 is installed in the first groove 300 to facilitate the quick positioning and installation between the body part 21 and the frame 32. The body part 21 can cut off the power supply circuit when the temperature is higher than the preset value.

[0068] Two wire parts 22 are tightly wound on the frame 32. The wire parts 22 after being tightened can limit the positions of the two ends of the body part 21, thereby ensuring the position stability of the body part 21 and the adhesion stability between the body part 21 and the monitoring area 100. The two wire parts 22 are connected with the power supply circuit. In the embodiment of the present disclosure, the wire part 22 is an aluminum wire without an insulating wire skin arranged at the two ends of the body part 21, and the power supply circuit has a lead wire 50. The lead wire 50 is used to remove a section of the insulating wire skin, and the wire part 22 and the lead wire 50 are connected in conduction by using a compression or welding fixing mode.

[0069] In the exemplary embodiments, please combine with Figures 6 to 8 The frame 32 includes two side walls 321 and a connecting plate 322. The two side walls 321 are arranged at the two ends of the body part 21 one by one and on the connecting plate 322. The two side walls 321 and the connecting plate 322 enclose the first groove 300.

[0070] The circumferential outer side of the side wall 321 is provided with a first wire winding groove 400. The first wire winding groove 400 is in communication with the first groove 300, the wire part 22 is arranged in the first wire winding groove 400, and is tightly attached to the side of the side wall 321 away from the first groove 300 and the side of the connecting plate 322 away from the first groove 300. In this way, the arrangement of the first wire winding groove 400 can facilitate the positioning of the wire part 22 and the frame 32, and ensure the position stability of the wire part 22 wound on the frame 32.

[0071] In the exemplary embodiments, please combine with Figures 6 to 8 , Figure 12 and Figure 13 The side wall 321 has a first stop part 3211 and a guide part 3212. The first wire winding groove 400 is formed between the first stop part 3211 and the guide part 3212, the first stop part 3211 is located on the side of the first wire winding groove 400 close to the slot 201, and the guide part 3212 is located on the side of the first wire winding groove 400 away from the slot 201. In this way, the arrangement of the guide part 3212 can guide the wire part 22 to the first stop part 3211, so as to ensure the position stability of the wire part 22 relative to the side wall 321. In the embodiment of the present disclosure, the guide part 3212 is in the shape of a circular arc, so as to facilitate the guiding of the wire part 22 to the first wire winding groove 400 and the tight attachment of the wire part 22 to the first stop part 3211 after being tightened. The first stop part 3211 can prevent the wire part 22 from coming out of the first wire winding groove 400, and can also position the wire part 22, so as to ensure the position stability of the wire part 22 and the body part 21.

[0072] In the exemplary embodiments, please combine with Figures 9 to 13 The bottom of the mounting groove 200 is provided with a fixing groove 500, and the connecting plate 322 is partially mounted in the fixing groove 500, so as to facilitate the positioning and detachable connection of the frame 32 and the body 31.

[0073] The first stop portion 3211 is at least partially overlapped with the projection of the wire portion 22 on the bottom of the mounting groove 200, and the first stop portion 3211 can clamp the wire portion 22 on the bottom of the mounting groove 200, so that after the connecting plate 322 is installed in the fixing groove 500, the first stop portion 3211 can clamp the wire portion 22 on the bottom of the mounting groove 200, and further ensure the position stability of the wire portion 22.

[0074] In the exemplary embodiments, please refer to Figures 6 to 13 The side wall 321 further has a second stop portion 3213. The second stop portion 3213 is located on the side of the side wall 321 opposite to the first winding groove 400, so that the second stop portion 3213 and the first winding groove 400 can be arranged along the winding path of the wire portion 22, and the wire portion 22 is further limited by the second stop portion 3213 after being wound in the first winding groove 400.

[0075] The second stop portion 3213 is at least partially overlapped with the projection of the wire portion 22 on the bottom of the mounting groove 200, and the second stop portion 3213 can clamp the wire portion 22 on the bottom of the mounting groove 200, so that after the connecting plate 322 is installed in the fixing groove 500, the second stop portion 3213 can clamp the wire portion 22 on the bottom of the mounting groove 200, and further ensure the position stability of the wire portion 22. The second stop portion 3213 and the bottom of the mounting groove 200 can form a second winding groove.

[0076] In the exemplary embodiments, as shown in Figure 7 The side wall 321 is provided with a wire accommodating groove 600 away from the side of the first groove body 300, and the wire accommodating groove 600 is communicated between the first winding groove 400 and the second winding groove, so as to facilitate the wire portion 22 to be wound on the side wall 321. The side wall 321, the first stop portion 3211 and the guide portion 3212 are narrowed on the side facing the first winding groove 400, and the side wall 321 and the second stop portion 3213 are narrowed on the side facing the second winding groove, which can cause greater deformation of the wire portion 22, and improve the connection stability between the wire portion 22 and the frame 32.

[0077] In the exemplary embodiments, please refer to Figure 10 and Figure 12The body 31 has a guide wall 311 located in the mounting groove 200, the guide wall 311 is located on the circumferential outer side of the side wall 321 and is arranged opposite to the first winding groove 400, the side wall 321 can abut the wire part 22 to the guide wall 311, and the guide wall 311 is arranged to guide the wire part 22 to the second stop part 3213. Thus, through the arrangement of the guide wall 311, the wire part 22 can be conveniently guided after being wound on the side wall 321, and the side away from the side wall 321 can be limited by the guide wall 311, so as to ensure the shape stability of the wire part 22 after winding, and further ensure the position stability of the body part 21. The wire part 22 is limited by the side wall 321 and the guide wall 311, so as to increase the connection area between the wire part 22 and the shell assembly 30, further increase the static friction, and ensure that the body part 21 can be stably abutted to the monitoring area 100.

[0078] In the exemplary embodiments, please combine Figure 9 , Figure 10 , Figure 12 and Figure 13 , the groove bottom of the mounting groove 200 has a recessed part 700 recessed away from the slot opening 201. The groove bottom of the mounting groove 200 has a transition surface 312 offset to the recessed part 700, and the second stop part 3213 can clamp the wire part 22 to the transition surface 312 to ensure the position stability of the part of the wire part 22 away from the recessed part 700. The arrangement of the recessed part 700 can reduce the limitation of the body 31 on the wire part 22 away from the body part 21, so that the wire part 22 has greater freedom on the side away from the body part 21, and the lead wire 50 is conveniently routed.

[0079] In the exemplary embodiments, please combine Figure 5 , Figure 9 , Figure 11 and Figure 13 , the body 31 is provided with a wire passing hole 800, and the power supply circuit is connected with the temperature fuse 20 through the wire passing hole 800. In the embodiment of the present disclosure, the two lead wires 50 connected with the two wire parts 22 are combined and can be led out from the wire passing hole 800, and the combined positions of the two lead wires 50 each have an insulating wire skin insulation to ensure no short circuit. In addition, the connecting plate 322 can also separate the body part 21 and the lead wire 50 to avoid short circuit.

[0080] The wire passing hole 800 between the power supply circuit and the body 31 is sealed by a sealing structure. The sealing structure can be formed by gluing between the lead wire 50 and the body 31, or a rubber molded wire plug (SR) can be used to seal the wire passing hole 800 to improve the airtightness of the inside of the shell assembly 30. In the embodiment of the present disclosure, the number of wire passing holes 800 is one. It can be understood that in other embodiments, the number of wire passing holes 800 can also be two, and the two lead wires 50 correspond to the two wire passing holes 800 one by one and are led out from the shell assembly 30.

[0081] In the exemplary embodiments, please combine with Figure 6 , Figure 7 , Figure 9 , Figure 10 , Figure 13 and Figure 14 , the body 31 has a circumferential wall 313 surrounding the fixing groove 500, the circumferential outer wall of the connecting plate 322 is provided with a plurality of protrusions 3221, and the plurality of protrusions 3221 abut against the circumferential wall 313. In this way, the connection stability between the body 31 and the frame 32 can be ensured through the cooperation of the circumferential wall 313 and the plurality of protrusions 3221, and the stability of the first stop portion 3211 and the second stop portion 3213 clamping the wire portion 22 to the groove bottom of the mounting groove 200 is ensured.

[0082] In the exemplary embodiments, please combine with Figure 6 , Figure 7 , Figure 10 and Figure 14 , the circumferential wall 313 and the groove bottom of the mounting groove 200 have a first guide surface 314, and the circumferential outer side of the connecting plate 322 has a second guide surface 3222 that guides and cooperates with the first guide surface 314. In this way, through the cooperation of the first guide surface 314 and the second guide surface 3222, the connecting plate 322 can be conveniently introduced into the fixing groove 500, and the quick assembly between the body 31 and the frame 32 is realized.

[0083] In the exemplary embodiments, please combine with Figures 9 to 14 , the groove bottom of the mounting groove 200 is provided with a second groove body 900. The second groove body 900 is in communication with the fixing groove 500 and is oppositely arranged with the first groove body 300. The body portion 21 is installed in the space formed by the first groove body 300 and the second groove body 900, so that the body portion 21 can be limited by the space formed by the first groove body 300 and the second groove body 900 to be installed in the housing assembly 30. Moreover, the first groove body 300 has a larger opening, which facilitates the installation of the temperature fuse 20.

[0084] The second groove body 900 can form an abutting structure 315 on the body 31, which abuts against the side of the body portion 21 away from the slot 201, ensuring the stability of the abutment of the body portion 21 against the monitoring area 100. The body 31 has a more stable structure relative to the frame 32, and the abutting structure 315 provided on the body 31 abuts the body portion 21 against the monitoring area, which can further ensure the accuracy of the abutment of the body portion 21 against the monitoring area 100, making the action of the temperature fuse 20 triggering the fuse more sensitive. In addition, the side of the frame 32 away from the body portion 21 can also be provided with an abutting structure 315, further improving the accuracy of the abutment of the body portion 21 against the monitoring area 100. In the embodiment of the present disclosure, the shape of the abutting structure 315 matches the shape of the outer surface of the body portion 21, reducing the risk of driving the abutting structure 315 to deviate from its position after abutting against the body portion 21, avoiding loosening the connection between the wire portion 22 and the frame 32 and the body 31, and reducing the abutting stability between the body portion 21 and the monitoring area 100.

[0085] In an exemplary embodiment, please refer to Figure 3 , Figures 9 to 13 , the liquid heating device further comprises a sealing member 60, which is arranged between the body 31 and the box 10 and surrounds the outside of the slot 201. In this way, the sealing member 60 can further improve the sealing performance of the slot 201, ensure the heat preservation effect of the temperature fuse 20 installation environment, and ensure that the heat at the monitoring area 100 position will not be dissipated into the air, ensuring the timeliness of the temperature fuse 20 melting. In the embodiment of the present disclosure, the side of the body 31 facing the box 10 is provided with an annular groove 1000, which surrounds the slot 201, and part of the sealing member 60 is accommodated in the annular groove 1000 to improve the connection stability between the sealing member 60 and the body 31. In addition, the sealing member 60 can also be connected to the body 31 by welding or bonding. It can be understood that in other embodiments, the box 10 can also be provided with a groove structure matching the annular groove 1000 to accommodate the sealing member 60. The sealing member 60 can also be connected to the box 10 by welding or bonding.

[0086] In an exemplary embodiment, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 9 , Figure 11 and Figure 13 , the outer wall of the box 10 is provided with a first clamping assembly 11, a second clamping assembly 12 and a first connecting piece 13.

[0087] The shell assembly 30 is provided with a second connecting piece 33, the shell assembly 30 is clamped between the first clamping assembly 11 and the second clamping assembly 12 to facilitate the quick positioning and installation between the shell assembly 30 and the box body 10. The second connecting piece 33 is detachably connected with the first connecting piece 13 to facilitate the disassembly and assembly of the shell assembly 30 and the box body 10, thereby facilitating the replacement of the temperature fuse 20. In the embodiment of the present disclosure, the first connecting piece 13 is in a columnar structure. The second connecting piece 33 is in an ear plate structure. The first connecting piece 13 and the second connecting piece 33 are detachably connected through a threaded part 70. The first connecting piece 13 has a threaded hole and is convex to the outer wall of the box body 10, avoiding the increase of the thickness of the outer wall of the box body 10 caused by the arrangement of the threaded hole. The second connecting piece 33 can be attached to the end of the first connecting piece 13 away from the box body 10, ensuring the positional stability between the first connecting piece 13 and the second connecting piece 33. The second connecting piece 33 is arranged in a spaced manner with the box body 10 to adapt to the size of the first connecting piece 13 which is convex to the box body 10. The side of the second connecting piece 33 facing the first connecting piece 13 is also provided with a positioning groove 1100 to facilitate the positioning between the first connecting piece 13 and the second connecting piece 33. In order to improve the strength of the first connecting piece 13, a reinforcing plate 331 is arranged between the second connecting piece 33 and the body 31.

[0088] In the exemplary embodiments, please combine Figure 4 、 Figure 5 、 Figure 9 、 Figure 11 and Figure 13 , the first clamping assembly 11 includes a first abutting arm 111 and a second abutting arm 112, the second clamping assembly 12 includes a third abutting arm 121, the first abutting arm 111 and the third abutting arm 121 are arranged in a relative manner along a first direction and clamp the shell assembly 30 to avoid the movement of the shell assembly 30 along the first direction.

[0089] The shell assembly 30 is provided with a first abutting protrusion 34.

[0090] The first abutting arm 111 and the second abutting arm 112 are arranged along a second direction, and the first connecting piece 13 is arranged in a relative manner with the second abutting arm 112 along the first direction, so that the first abutting arm 111, the second abutting arm 112, the third abutting arm 121, the first connecting piece 13 and the second connecting piece 33 can limit the shell assembly 30 from the circumferential direction (at least four positions) of the shell assembly 30. In addition to being able to limit the movement of the shell assembly 30 along the first direction, it can also limit the rotation of the shell assembly 30 relative to the box body 10, thereby ensuring the connection stability between the shell assembly 30 and the box body 10, and thereby ensuring the stability of the temperature monitoring of the temperature fuse 20.

[0091] The shell assembly 30 is abutted against the second abutment arm 112 on the side facing the first connecting piece 13 by the first abutment protrusion 34. The first connecting piece 13 and the second connecting piece 33 are detachably connected, and there is a problem of low position accuracy during installation. The first abutment protrusion 34 is arranged to form an interference fit with the first abutment arm 111, thereby ensuring the stability of the abutment of the second abutment arm 112 to the shell assembly 30. In the embodiment of the present disclosure, the first direction is perpendicular to the second direction. In the embodiment of the present disclosure, the first direction is parallel to the direction indicated by the arrow X in Figure 2 . The second direction is parallel to the direction indicated by the arrow Y in Figure 2 .

[0092] In the exemplary embodiments, please refer to Figure 2 , Figure 4 , Figure 9 , Figure 11 and Figure 13 , the side of the first abutment arm 111 facing the third abutment arm 121 has a first abutment surface 1111. The side of the first abutment arm 111 away from the box body 10 has a first guide structure 1112, which is connected with the first abutment surface 1111 and can guide the shell assembly 30 to the first abutment surface 1111.

[0093] The side of the second abutment arm 112 facing the first connecting piece 13 has a second abutment surface 1121, and the side of the second abutment arm 112 away from the box body 10 has a second guide structure 1122, which is connected with the second abutment surface 1121 and can guide the first abutment protrusion 34 to the second abutment surface 1121. Thus, through the arrangement of the first guide structure 1112 and the second guide structure 1122, the shell assembly 30 can be conveniently guided to the installation position of the box body 10, so that the limiting cooperation of the first clamping assembly 11 and the second clamping assembly 12 to the shell assembly 30 is changed from loose cooperation to tight cooperation, which facilitates the quick cooperation of the shell assembly 30 with the box body 10 in the loose cooperation stage, and realizes the position stability of the shell assembly 30 relative to the box body 10 in the tight cooperation stage. In the embodiment of the present disclosure, the first abutment protrusion 34 is provided with a third guide structure 341 matched with the second guide structure 1122. The first guide structure 1112, the second guide structure 1122 and the third guide structure 341 are all inclined surface structures.

[0094] In the exemplary embodiments, please refer to Figure 2 , Figure 4 , Figure 5 , Figure 9 , Figure 11 and Figure 13 , the shell assembly 30 is provided with the first elastic arm 35, the second elastic arm 36 and the second abutment protrusion 37 arranged along the second direction.

[0095] The box body 10 is provided with a clamping portion 14.

[0096] The clamping portion 14 and the first abutting arm 111 are oppositely arranged along the second direction, the first elastic arm 35 is clamped with the clamping portion 14 and the second abutting protrusion 37 is abutted on one side of the first abutting arm 111 facing the clamping portion 14, so that the elastic deformation ability of the first elastic arm 35 can facilitate the clamping with the clamping portion 14, and the elastic force generated by the elastic deformation can drive the second abutting protrusion 37 to abut on one side of the first abutting arm 111 facing the clamping portion 14, so as to limit the movement of the shell assembly 30 along the second direction, so that the first elastic arm 35 can not only facilitate the installation of the shell assembly 30 on the box body 10, but also ensure the connection stability between the shell assembly 30 and the box body 10.

[0097] The second elastic arm 36 is abutted on one side of the second abutting arm 112 away from the first abutting arm 111. In the embodiment of the present disclosure, the second abutting arm 112 also has a certain elastic deformation ability, and the mutual cooperation between the second abutting arm 112 and the second elastic arm 36 can further ensure the connection stability between the shell assembly 30 and the box body 10.

[0098] In the exemplary embodiments, please combine Figure 5 , Figure 9 , Figure 11 and Figure 13 , the first elastic arm 35 and the second elastic arm 36 both have a stepped structure 38 to improve the structural strength of the first elastic arm 35 and the second elastic arm 36 and the connection area between the first clamping assembly 11, thereby improving the connection stability. The second abutting protrusion 37 is provided with a fourth guide structure 371 for guiding the first abutting arm 111, so as to facilitate the guiding of the second abutting protrusion 37 to one side of the first abutting arm 111 facing the clamping portion 14, so that the abutting cooperation between the second abutting protrusion 37 and the first abutting arm 111 changes from loose cooperation to tight cooperation, facilitating the quick cooperation between the second abutting protrusion 37 and the first abutting arm 111 in the loose cooperation stage, and realizing the position stability of the second abutting protrusion 37 relative to the first abutting arm 111 in the tight cooperation stage.

[0099] In the exemplary embodiments, please combine Figure 2 and Figure 4 , one side of the first abutting arm 111 facing the clamping portion 14 is provided with a connecting arm 113 connected with the box body 10, so as to improve the structural strength of the first abutting arm 111. Since the second abutting protrusion 37 is in abutting cooperation with one side of the first abutting arm 111 facing the clamping portion 14, the connecting arm 113 arranged on one side of the first abutting arm 111 facing the clamping portion 14 can produce a pulling effect on the first abutting arm 111, so as to avoid deformation under the action of the second abutting protrusion 37 and ensure the tight cooperation between the first abutting protrusion 34 and the first abutting arm 111.

[0100] The first abutting arm 111 is provided with a support arm 114 on the side facing the second abutting arm 112. The support arm 114 can provide support when the second abutting arm 112 is deformed too much, avoiding the second abutting arm 112 from breaking. Since the second abutting arm 112 has a certain elastic deformation capacity, its thickness size is smaller than that of the first abutting arm 111, that is, the first abutting arm 111 can also improve the structural strength by increasing its thickness size. Since the second abutting arm 112 has a certain elastic deformation capacity, the first abutting protrusion 34 can also ensure the abutting stability of the second abutting arm 112 to the shell assembly 30 when the second abutting arm 112 is deformed.

[0101] In the exemplary embodiments, please combine Figure 1 , Figure 2 and Figure 3 , the liquid heating device further comprises an abutting portion 81 abutting to the side of the shell assembly 30 away from the box body 10, further improving the connection stability between the shell assembly 30 and the box body 10. In order to ensure the overall compact structure of the liquid heating device and reduce the number of parts, the abutting portion 81 can be located at the temperature control switch 80 of the liquid heating device. By providing a curved structure at the temperature control switch 80, the abutting portion 81 is formed. After the temperature control switch 80 is installed on the box body 10, the abutting portion 81 can abut to the side of the shell assembly 30 away from the box body 10. The abutting portion 81 formed by the curved structure has a blunt surface, which can avoid scratching the shell assembly 30 when abutting to the shell assembly 30.

[0102] In the exemplary embodiments, please combine Figure 15A and Figure 15B , the power supply circuit comprises a strong current power supply loop and a control power supply loop 91. The temperature fuse 20 is connected in series in the strong current power supply loop. The heating assembly 92 in the strong current power supply loop is electrically connected to the control power supply loop 91 through the live wire 93 and the neutral wire 94.

[0103] The temperature fuse 20 is connected in series in the strong current power supply loop. When the heating assembly 92 abnormally heats (such as dry burning), the temperature in the monitoring area 100 rapidly rises. When the temperature exceeds the preset value of the temperature fuse 20, the temperature fuse 20 is disconnected, the neutral wire 94 or the live wire 93 is disconnected, the strong current power supply loop is disconnected, and the heating assembly 92 stops heating. The lead 50 can be a part of the live wire 93 or the neutral wire 94. When the temperature fuse 20 is connected in series in the strong current power supply loop, the shell assembly 30 can be made of a material with a high melting point, improving the safety performance of the temperature fuse 20 exposed to leakage.

[0104] In the exemplary embodiments, please combine Figure 16A and Figure 16BThe temperature fuse 20 is connected in series in the control power supply circuit 91. The power supply 40 in the control power supply circuit 91 is electrically connected to the main control board 95 through the live wire 93 and the neutral wire 94. The main control board 95 is electrically connected to the heating assembly 92.

[0105] The temperature fuse 20 can also be connected in series in the control power supply circuit 91. When the temperature exceeds the preset value of the temperature fuse 20, the temperature fuse 20 is disconnected, the neutral wire 94 or the live wire 93 is disconnected, the control power supply circuit 91 is disconnected, and the main control board 95 stops supplying power to the heating assembly 92. The lead 50 can be part of the live wire 93 or the neutral wire 94.

[0106] In the exemplary embodiment, please refer to Figure 17A and Figure 17B The strong power supply circuit is connected in series with the relay 96, the relay 96 is provided with a weak power supply circuit, and the temperature fuse 20 is connected in series in the weak power supply circuit.

[0107] The heating assembly 92 is connected in series with the relay 96 (such as a normally open relay) in the live wire 93 or the neutral wire 94, the relay 96 is powered by a set of weak power supply circuits, and the temperature fuse 20 is connected in series in the weak power supply circuit.

[0108] In normal operation, the temperature fuse 20 is normally on, the weak power supply circuit supplies power to the relay 96, the relay 96 is closed after being powered, the strong power supply circuit is on, and the heating assembly 92 is normally powered and works.

[0109] When the heating assembly 92 abnormally heats (such as dry burning), the temperature in the monitoring area 100 rapidly rises, and when the temperature exceeds the preset value of the temperature fuse 20, the temperature fuse 20 is disconnected, the weak power supply circuit is disconnected, the relay 96 is disconnected due to power loss, the neutral wire 94 or the live wire 93 is disconnected, the strong power supply circuit is disconnected, and the heating assembly 92 stops heating. The lead 50 can be part of the weak power line 97. The temperature fuse 20 is connected in series in the weak power supply circuit, there is no strong current, and the risk of electric leakage is greatly reduced.

[0110] In the description in the present disclosure, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", "mouth structure" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0111] In the description of the embodiments of the present disclosure, unless specifically defined and limited otherwise, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0112] Although the embodiments disclosed in the present disclosure are as above, the content described is only the embodiments adopted for the convenience of understanding the present disclosure, and is not intended to limit the present disclosure. It should be noted that the above examples or embodiments are only exemplary and not limiting. Therefore, the present disclosure is not limited to the specific embodiments shown and described herein. Various modifications, replacements or omissions can be made to the forms and details of the implementation without departing from the scope of the present disclosure.

Claims

1. A liquid heating apparatus, characterised in that, The liquid heating device comprises: a box capable of enclosing a containing space for containing liquid, an outer wall of the box having a monitoring area; a heating mechanism comprising a power supply circuit and a heating assembly, the power supply circuit being electrically connected to the heating assembly and configured to supply power to the heating assembly, the heating assembly being arranged in the box and at least partially accommodated in the containing space, the heating assembly being configured to heat the liquid; a temperature fuse connected to the power supply circuit, the temperature fuse being configured to cut off the power supply circuit when the temperature of the temperature fuse is higher than a preset value; and a housing assembly provided with a mounting groove, the temperature fuse being mounted in the mounting groove and partially protruding from a groove opening of the mounting groove, the housing assembly being mounted on the box and abutting the temperature fuse against the monitoring area, the box being capable of sealing the groove opening. The housing assembly comprises a body and a frame, and the liquid heating device further comprises a sealing member arranged between the body and the box and surrounding an outer side of the groove opening. The body is mounted on the box and the mounting groove is arranged on the body, and the frame is provided with a first groove body and is mounted in the mounting groove.

2. The liquid heating device of claim 1, wherein, The temperature fuse comprises a body portion and two wire portions respectively arranged at two ends of the body portion, the body portion is mounted in the first groove body, and the two wire portions are tightly wound around the frame and connected to the power supply circuit. The frame comprises two side walls and a connecting plate, the two side walls correspond to the two ends of the body portion one by one and are arranged on the connecting plate, and the two side walls and the connecting plate enclose the first groove body.

3. The liquid heating device of claim 2, wherein, A first wire winding groove is arranged on a circumferential outer side of the side wall, the first wire winding groove communicates with the first groove body, the wire portion is arranged in the first wire winding groove and tightly adheres to one side of the side wall away from the first groove body and one side of the connecting plate away from the first groove body. The side wall has a first stop portion and a guide portion, the first wire winding groove is formed between the first stop portion and the guide portion, the first stop portion is located on one side of the first wire winding groove close to the groove opening, and the guide portion is located on one side of the first wire winding groove away from the groove opening.

4. The liquid heating device of claim 3, wherein, A fixing groove is arranged on a groove bottom of the mounting groove, and the connecting plate is partially mounted in the fixing groove.

5. The liquid heating device of claim 4, wherein, A projection of the first stop portion on the groove bottom of the mounting groove at least partially overlaps a projection of the wire portion on the groove bottom of the mounting groove, and the first stop portion can clamp the wire portion on the groove bottom of the mounting groove. The side wall further has a second stop portion located on a side of the side wall opposite to the first wire winding groove, a projection of the second stop portion on the groove bottom of the mounting groove at least partially overlaps a projection of the wire portion on the groove bottom of the mounting groove, and the second stop portion can clamp the wire portion on the groove bottom of the mounting groove.

6. The liquid heating device of claim 5, wherein, ​ 7. The liquid heating device of claim 6, wherein, The body has a guide wall located in the mounting groove, the guide wall is located on the circumferential outer side of the side wall and is arranged opposite to the first wire slot, the side wall can abut the wire part against the guide wall, and the guide wall is arranged to guide the wire part to the second stop part.

8. The liquid heating device of claim 6, wherein, The groove bottom of the mounting groove has a recess recessed away from the slot opening, and the groove bottom of the mounting groove has a transition surface offset to the recess, and the second stop part can clamp the wire part on the transition surface.

9. The liquid heating device of claim 6, wherein, The body is provided with a wire passing hole, and the power supply circuit is connected with the temperature fuse through the wire passing hole. The power supply circuit and the body are sealed by a sealing structure to seal the wire passing hole.

10. The liquid heating device of claim 5, wherein, The body has a circumferential wall surrounding the fixing groove, the circumferential outer wall of the connecting plate is provided with a plurality of protruding parts, and the plurality of protruding parts abut against the circumferential wall.

11. The liquid heating device of claim 10, wherein, The circumferential wall and the groove bottom of the mounting groove have a first guide surface, and the circumferential outer side of the connecting plate has a second guide surface guided matched with the first guide surface.

12. The liquid heating device of claim 5, wherein, The groove bottom of the mounting groove is provided with a second groove body, the second groove body is communicated with the fixing groove and is arranged opposite to the first groove body, and the body part is installed in the space formed by the first groove body and the second groove body. The second groove body can form an abutting surface on the body, and the abutting surface abuts against one side of the body part away from the slot opening.

13. The liquid heating device of claim 1, wherein, The outer wall of the box body is provided with a first clamping assembly, a second clamping assembly and a first connecting piece; The shell assembly is provided with a second connecting piece, the shell assembly is clamped between the first clamping assembly and the second clamping assembly, and the second connecting piece is detachably connected with the first connecting piece.

14. The liquid heating device of claim 13, wherein, The first clamping assembly includes a first abutting arm and a second abutting arm, the second clamping assembly includes a third abutting arm, the first abutting arm and the third abutting arm are arranged opposite along a first direction and clamp the shell assembly; The shell assembly is provided with a first abutting protrusion; The first abutting arm and the second abutting arm are arranged along a second direction, and the first connecting piece and the second abutting arm are arranged opposite along the first direction, and the shell assembly is abutted on one side of the second abutting arm facing the first connecting piece through the first abutting protrusion; Wherein, the first direction is perpendicular to the second direction.

15. The liquid heating device of claim 14, wherein, One side of the first abutting arm facing the third abutting arm has a first abutting surface, and one side of the first abutting arm away from the box body has a first guide structure connected with the first abutting surface, which can guide the shell assembly to the first abutting surface; One side of the second abutting arm facing the first connecting piece has a second abutting surface, and one side of the second abutting arm away from the box body has a second guide structure connected with the second abutting surface, which can guide the first abutting protrusion to the second abutting surface.

16. The liquid heating device of claim 14, wherein, The shell assembly is provided with a first elastic arm, a second elastic arm and a second abutting protrusion arranged along the second direction; The box body is provided with a clamping part; The clamping portion and the first abutting arm are oppositely arranged along the second direction, the first elastic arm is clamped with the clamping portion, and the second abutting protrusion is abutted on one side of the first abutting arm facing the clamping portion; The second elastic arm is abutted on one side of the second abutting arm away from the first abutting arm.

17. The liquid heating device of claim 16, wherein, One side of the first abutting arm facing the clamping portion is provided with a connecting arm connected with the box body; One side of the first abutting arm facing the second abutting arm is provided with a supporting arm spaced from the second abutting arm.

18. The liquid heating device of claim 1, wherein, The liquid heating device further comprises an abutting portion abutted on one side of the shell assembly away from the box body.

19. The liquid heating device of claim 1, wherein, The power supply circuit comprises a strong current power supply loop and a control power supply loop; The temperature fuse is connected in series with the strong current power supply loop; or The temperature fuse is connected in series with the control power supply loop; or The strong current power supply loop is connected in series with a relay, the relay is provided with a weak current power supply loop, and the temperature fuse is connected in series with the weak current power supply loop.

20. An intelligent toilet, characterized by comprising: Comprise: A toilet body; And The liquid heating device according to any one of claims 1 to 19.

21. A smart cover sheet characterized by, Comprise: An intelligent cover plate host; And The liquid heating device according to any one of claims 1 to 19.

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