A heating device and a toilet

Abstract

The utility model discloses a kind of heating device and closestool. The heating device includes shell, mounting seat and heating piece;Shell is equipped with heating cavity, and with the first opening of heating cavity communication;Mounting seat cover is in the first opening, and with shell fixed connection;Heating piece is inserted in heating cavity, and is connected with mounting seat, and it is movably connected between mounting seat and heating piece, so that heating piece can swing relative to shell in the process of insertion heating cavity, to adjust the gap between heating piece and the wall surface of heating cavity.The heating device of the application, the process of heating piece insertion heating cavity can swing relative to shell, to facilitate the gap of heating flow channel to be adjusted uniformly.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating equipment technical field more specifically, relate to a kind of heating device and closestool. BACKGROUND

[0002] Intelligent closestool is usually provided with heating device, and the heating device is provided with heating cavity containing water, and heating element is arranged in the heating cavity, and the heating element makes the water in the heating cavity heated and warmed, so as to obtain warm water for the human body cleaning module of closestool.

[0003] The heating element is generally provided as an elongated element, and one end of the heating element is usually fixedly connected to the mounting seat. The other end of the heating element, which is away from the mounting seat, is inserted into the heating cavity. When the heating element is mounted to the mounting seat, the connection contact area between the heating element and the mounting seat is relatively small. The heating element may be inclined relative to the mounting seat, which causes the part of the heating element inserted into the heating cavity to be inclined relative to the wall surface of the heating cavity. This makes the gap of the flow passage in the heating cavity uneven, which affects the heating efficiency of the heating device. Moreover, if the part of the heating element inserted into the heating cavity is inclined to abut against the wall surface of the heating cavity, the wall surface of the heating cavity will be locally damaged due to heating, which causes the heating device to malfunction. SUMMARY

[0004] To solve the above problems, the utility model embodiment provides a kind of heating device and closestool, and the mounting seat of the heating device is movably connected with the heating element. Thus, the heating element can swing relative to the shell during insertion into the heating cavity, so as to adjust the gap between the heating element and the wall surface of the heating cavity.

[0005] The specific technical solutions of the utility model embodiment are as follows:

[0006] A kind of heating device, comprising:

[0007] A shell is provided with a heating cavity and a first opening communicating with the heating cavity;

[0008] A mounting seat is covered on the first opening and fixedly connected with the shell; and

[0009] A heating element is inserted into the heating cavity and connected with the mounting seat. The mounting seat is movably connected with the heating element, so that the heating element can swing relative to the shell during insertion into the heating cavity, thereby adjusting the gap between the heating element and the wall surface of the heating cavity.

[0010] A closestool comprising the heating device as described in the above embodiment.

[0011] The technical effects of the heating device of the present application embodiment are as follows:

[0012] In the heating device of this application embodiment, the relative connection position between the heating element and the mounting base can be adjusted. In this way, during the process of inserting the heating element into the heating cavity, the heating element can swing relative to the housing to adjust the relative position between the heating element and the wall of the heating cavity, thereby adjusting the gap value of the flow section of the heating channel, ensuring that the gap value of the flow section of the heating channel is uniform, and preventing the end of the heating element inserted into the heating cavity from abutting against the wall of the heating cavity, which would cause the heating device to malfunction due to local heating.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0015] Figure 1 This is a three-dimensional structural diagram of a heating device according to an embodiment of this application;

[0016] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the heating device;

[0017] Figure 3 This is a schematic diagram of the mounting base according to an embodiment of this application, viewed from one angle.

[0018] Figure 4 for Figure 3 A schematic diagram of the mounting bracket viewed from another angle;

[0019] Figure 5 This is a schematic diagram of the structure of a heating element according to an embodiment of this application;

[0020] Figure 6 This is a schematic cross-sectional view of the assembled heating element, sealing element, and mounting base according to an embodiment of this application.

[0021] Figure 7 for Figure 6 A magnified structural diagram of part A;

[0022] Figure 8 This is a schematic diagram of the structure of a flow guide component according to an embodiment of this application;

[0023] Figure 9 for Figure 1 A schematic diagram of a cross-section of the heating device;

[0024] Figure 10 An assembly process of the flow guide, the heating element and the mounting seat according to an embodiment of the present application;

[0025] Figure 11 An assembly process of the heating device according to Figure 1 ;

[0026] Figure 12 A structure diagram of the gap maintaining element according to an embodiment of the present application;

[0027] Figure 13 A structure diagram of the gap maintaining element, the flow guide and the heating element according to an embodiment of the present application after assembly;

[0028] Figure 14 Another cross-sectional structure diagram of the heating device according to Figure 1 ;

[0029] Figure 15 A structure diagram of the gap maintaining element according to another embodiment of the present application;

[0030] Figure 16 A structure diagram of the gap maintaining element, the flow guide and the heating element according to Figure 15 after assembly;

[0031] Figure 17 A cross-sectional structure diagram of the heating device according to another embodiment of the present application, wherein the gap maintaining element is the gap maintaining element according to Figure 15 ;

[0032] Figure 18 Another assembly process of the heating device according to Figure 1 . DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0034] Please refer to the structure diagram of the heating device according to an embodiment of the present application shown in the accompanying drawings. Figures 1 to 10 The arrows in Figure 10 and Figure 11 indicate the moving direction of the components during the assembly process.

[0035] As shown in Figures 1 to 7 and Figure 11As shown, the exemplary embodiments of the present application provide a heating device, which comprises a shell 1, a mounting seat 2 and a heating element 3. The shell 1 is provided with a heating cavity 11 and a first opening 111 communicating with the heating cavity 11. The mounting seat 2 is arranged on the first opening 111 and fixedly connected with the shell 1. The heating element 3 is inserted into the heating cavity 11 and connected with the mounting seat 2. The mounting seat 2 and the heating element 3 are movably connected, so that the heating element 3 can swing relative to the shell 1 during the process of being inserted into the heating cavity 11, thereby adjusting the gap between the heating element 3 and the wall surface of the heating cavity 11.

[0036] In the prior art, the heating element 3 is inserted into the heating cavity 11, and the heating element 3 and the cavity wall of the heating cavity 11 enclose a heating flow channel. Water is heated by the heating element 3 in the heating flow channel and then discharged from the heating cavity 11. The heating element 3 and the mounting seat 2 are usually fixedly connected by welding or the like. The heating element 3 is usually an elongated element, and the connection contact area between the heating element 3 and the mounting seat 2 is small. When the heating element 3 is installed to the mounting seat 2, the heating element 3 may be inclined relative to the mounting seat 2, which causes the end of the heating element 3 inserted into the heating cavity 11 to be inclined in the heating cavity 11, thereby causing the gap of the flow cross section of the heating flow channel in the heating cavity 11 to be uneven.

[0037] In order to solve the above problems, the heating device provided by the embodiments of the present application is movably connected between the mounting seat 2 and the heating element 3. The movable connection is opposite to the fixed connection such as welding and screwing. For example, the movable connection between the mounting seat 2 and the heating element 3 can be gap fit connection, elastic element connection or other connection modes. If the connection angle of the heating element 3 relative to the mounting seat 2 is inclined and deviates from the theoretical connection position, the movable connection between the mounting seat 2 and the heating element 3 can adjust the connection angle of the heating element 3 relative to the mounting seat 2 during the process of being inserted into the heating cavity 11, so as to adjust the gap value of the heating flow channel enclosed by the heating element 3 and the wall surface of the heating cavity 11.

[0038] From the above analysis, it can be known that the relative connection position relationship between the heating element 3 and the mounting seat 2 of the heating device of the embodiments of the present application can be adjusted. In this way, the heating element 3 can swing relative to the shell 1 during the process of being inserted into the heating cavity 11, so as to adjust the relative position relationship between the heating element 3 and the wall surface of the heating cavity 11, thereby adjusting the gap value of the flow cross section of the heating flow channel, ensuring the gap value of the flow cross section of the heating flow channel to be uniform, and preventing the end of the heating element 3 deviating from the mounting seat 2 from abutting to the wall surface of the heating cavity 11 to cause local heating failure of the heating device.

[0039] In an exemplary embodiment, the mounting seat 2 can be deformed during the insertion of the heating element 3 into the heating cavity 11. For example, the mounting seat 2 can be made of a thin sheet of metal or a piece of silicone rubber, which is easy to deform. During the insertion of the heating element 3 into the heating cavity 11, the mounting seat 2 can be deformed to a certain extent, so as to change the connection angle of the heating element 3 relative to the mounting seat 2, and enable the heating element 3 to swing relative to the housing 1 within a certain angle range, so that the clearance of the flow passage between the heating element 3 and the wall of the heating cavity 11 is uniform.

[0040] In an exemplary embodiment, as shown in Figures 3 to 6 the mounting seat 2 is provided with a mounting hole, and the heating element 3 is provided with an insertion portion 31. The insertion portion 31 is inserted into the mounting hole, and the insertion portion 31 and the mounting hole are in clearance fit, so that the heating element 3 can swing relative to the housing 1 during the insertion of the heating element 3 into the heating cavity 11.

[0041] A support portion is arranged between the insertion portion 31 and the mounting hole.

[0042] Specifically, the insertion portion 31 of the heating element 3 is in clearance fit with the mounting hole of the mounting seat 2, so that the heating element 3 and the mounting seat 2 are movably connected, and the heating element 3 can swing relative to the mounting seat 2, so as to adjust the assembly orientation relationship between the heating element 3 and the mounting seat 2.

[0043] The support portion is arranged between the insertion portion 31 and the mounting hole, and can be arranged to seal the clearance between the insertion portion 31 and the mounting hole, so as to ensure the sealing of the heating cavity 11 enclosed by the mounting seat 2 and the housing 1. The support portion also has the function of supporting the connection of the heating element 3, so as to prevent the heating element 3 from being greatly inclined relative to the mounting seat 2 after being mounted to the mounting seat 2.

[0044] In an exemplary embodiment, as shown in Figures 3 to 7 the mounting seat 2 is provided with a positioning counterbore 21, and the positioning counterbore 21 includes a positioning groove 211 and an avoidance groove 212 connected to each other. The opening of the avoidance groove 212 faces the first opening 111. The insertion portion 31 is arranged to be inserted into the positioning counterbore 21 through the avoidance groove 212, and the outer side wall of the insertion portion 31 and the side wall of the positioning counterbore 21 have an avoidance gap 213 therebetween, so as to allow the heating element 3 to swing relative to the housing 1 during the insertion of the heating element 3 into the heating cavity 11.

[0045] The opening of the avoidance groove 212 is provided with a sealing step 2121. The heating device further includes a sealing member 4. The sealing member 4 is limited at the sealing step 2121 and is in sealing fit with the outer side wall of the insertion portion 31. The support portion includes the sealing member 4, and the mounting hole includes the positioning counterbore 21.

[0046] Specifically, the outer side wall of the heating element 3 insertion part 31 is provided with a clearance gap 213 between the side wall of the mounting seat 2 positioning counterbore 21, so that the heating element 3 and the mounting seat 2 are gap-fitted and movably connected, and the installation position of the heating element 3 relative to the mounting seat 2 can be adjusted. The sealing element 4 has the effect of sealing the connection structure of the heating element 3 and the mounting seat 2, and ensures the sealing of the heating cavity 11 enclosed by the mounting seat 2 and the shell 1. The sealing element 4 also has the effect of supporting the insertion part 31 of the heating element 3. The gap fit between the heating element 3 and the mounting seat 2 causes the heating element 3 to be inclined after being connected to the mounting seat 2, and the sealing element 4 has the effect of supporting and limiting the heating element 3. The sealing element 4 is limited at the sealing step 2121, so that the sealing element 4 is stable after being installed to the mounting seat 2, and the sealing element 4 is not easy to be pulled out of the positioning counterbore 21.

[0047] It can be understood that the sealing element 4 can be made of a deformable material such as rubber, so that the swing angle of the heating element 3 relative to the mounting seat 2 can be increased.

[0048] In an exemplary embodiment, as shown in Figure 7 The clearance groove 212 is provided with a clearance slope 2122 between the sealing step 2121 and the positioning groove 211.

[0049] Specifically, the clearance groove 212 is provided with a clearance slope 2122 to increase the swing angle of the heating element 3 relative to the mounting seat 2.

[0050] In an exemplary embodiment, as shown in Figure 7 The bottom wall of the positioning groove 211 is provided with a wire harness hole 22, and the wire guide part 32 is connected to the end of the insertion part 31 away from the first opening 111, and the wire guide part 32 is provided in the wire harness hole 22.

[0051] Specifically, the wire guide part 32 is connected to the circuit to supply power to the heating element 3 to heat the heating element 3.

[0052] In an exemplary embodiment, as shown in Figures 3 to 7 The heating element 3 is provided as a bent and extended heating rod, both ends of the heating rod are provided with an insertion part 31, the number of positioning counterbores 21 is two, and the two positioning counterbores 21 correspond to the two insertion parts 31 one by one, and the spacing between the two positioning grooves 211 is adapted to the spacing between the two insertion parts 31 to limit the eccentric arrangement of the insertion part 31 relative to the corresponding positioning groove 211.

[0053] Specifically, Figure 5The heating element 3 in the shown embodiment is arranged as a U-shaped heating rod, and is connected with the two positioning counterbores 21 through the two insertion portions 31. Compared with the connection structure in which one insertion portion 31 is inserted into one positioning counterbore 21, the connection structure between the heating element 3 and the mounting seat 2 in the embodiment of the present application is more stable and reliable. It can be understood that the external structure of the heating element 3 in the present application is not limited to a U-shaped heating rod, and can also be arranged as other structural shapes. The number of the heating elements 3 in the heating device of the present application can be arranged as multiple, so that the multiple heating elements 3 have two or more insertion portions 31, and the mounting seat 2 is correspondingly provided with two or more positioning counterbores 21. The multiple insertion portions 31 are respectively inserted into the multiple positioning counterbores 21, and the insertion portion 31 can swing relative to the mounting seat 2. This is also within the protection scope of the heating device in the embodiment of the present application.

[0054] In one exemplary embodiment, as shown in Figure 8 and Figure 9 The heating device further comprises a flow guide element 5, which is arranged in the heating cavity 11 and cooperates with the inner wall of the heating cavity 11 to form a heating space 12 which is adapted to the shape of the heating element 3. The heating element 3 is arranged in the heating space 12 and cooperates with the housing 1 and the flow guide element 5 to form a heating flow channel 13.

[0055] Specifically, the heating device in the embodiment of the present application cooperates the heating element 3, the flow guide element 5 and the housing 1 to form the heating flow channel 13, so that the flow cross section of the heating flow channel 13 surrounds the outer sidewall of the heating element 3, and the water flow path in the heating flow channel 13 is the same as the length extension direction of the heating element 3. Therefore, the contact area between the water in the heating flow channel 13 and the outer sidewall of the heating element 3 is large, the water in the heating flow channel 13 is heated and warmed up quickly, and the heating efficiency of the heating device is improved. The heating device in the embodiment of the present application is an instant heating device.

[0056] Figure 10 The assembly process of the flow guide element 5 and the heating element 3 in one embodiment of the present application is shown. The heating element 3 is a U-shaped heating rod and has a curved shape and an avoiding space. The flow guide element 5 is inserted into the avoiding space of the heating element 3. The flow guide element 5 moves from the upper part of the heating element 3 to the lower part. The lower profile of the flow guide element 5 passes through the avoiding space of the heating element 3, and the upper profile and the arch part of the flow guide element 5 are hung above the heating element 3. In this way, the gap between the flow guide element 5 and the heating element 3 forms part of the heating flow channel 13.

[0057] In one exemplary embodiment, as shown in Figures 11 to 17 The heating device further comprises a gap maintaining element 6. The gap maintaining element 6 is arranged in the heating cavity 11 and supports the end of the heating element 3 away from the first opening 111, so as to maintain the gap between the heating element 3 and the wall surface of the heating space 12 stable.

[0058] Specifically, Figure 12A gap retainer 6 according to an embodiment of this application is shown. Figure 15 A gap retainer 6 according to another embodiment of this application is shown. During the insertion of the heating element 3 into the heating space 12, the presence of misalignment between the heating element 3 and the mounting base 2 may result in a larger misalignment at the end of the heating element 3 inserted into the heating space 12 away from the mounting base 2. For example... Figure 13 and Figure 16 As shown, the gap retainer 6 is used to constrain and limit the relative positional relationship between the heating element 3 and the flow guide 5, so as to ensure that the relative position between the heating element 3, the flow guide 5 and the housing 1 after the heating element 3 is inserted into the heating space 12 meets the set value range, and to ensure that the gap value of the flow section of the heating channel 13 meets the set value range.

[0059] In one exemplary embodiment, such as Figure 11 , Figure 13 and Figure 14 As shown, the gap retainer 6 is configured to be bent from a filament. The gap retainer 6 is snapped into the heating element 3 and the flow guide 5 so that the end of the heating element 3 away from the first opening 111 is supported by the flow guide 5, and the gap retainer 6 protrudes from the heating element 3 and has a gap between it and the wall of the heating space 12.

[0060] Specifically, the gap retainer 6 is snapped into the heating element 3 and the flow guide 5, such as Figure 14 The flow guide 5 is connected to the housing 1 in a limiting manner, so that the gap retainer 6 can constrain the positional relationship of the heating element 3 relative to the housing 1, ensuring that the gap value of the flow section of the heating channel 13 is uniform. The gap retainer 6 protrudes from the heating element 3, so that the heating element 3 and the wall of the heating cavity 11 are separated by the gap retainer 6, and the part of the heating element 3 inserted into the heating space 12 will not abut against the wall of the heating cavity 11 no matter how it is tilted. There is a gap between the gap retainer 6 and the wall of the heating space 12, so that the gap retainer 6 will not block the water flow in the heating channel 13.

[0061] Optionally, the gap retainer 6 of this application is formed by bending a flexible metal wire.

[0062] In one exemplary embodiment, such as Figures 15 to 17 As shown, the gap retainer 6 is configured to be bent from a filament. The gap retainer 6 is snapped into the heating element 3, the flow guide 5 and the housing 1 so that the end of the heating element 3 away from the first opening 111 is supported by the flow guide 5 and the housing 1.

[0063] Specifically, such as Figure 17In the shown heating device embodiment, one end of the gap maintaining member 6 is supported by the limiting housing 1, the other end of the gap maintaining member 6 is connected to the flow guide member 5, and the gap maintaining member 6 spans the heating member 3 and is clamped on the outside of both sides of the heating member 3. In this way, the position of the heating member 3 relative to the limiting housing 1 and the flow guide member 5 is limited and constrained, and the gap value of the flow passage cross section of the heating flow channel 13 is uniform.

[0064] In one exemplary embodiment, as shown in Figure 17 and Figure 18 The end of the flow guide member 5 facing the first opening 111 abuts against the mounting base 2 and encloses the temperature control measurement cavity 14 with the mounting base 2, and the heating device further comprises a temperature control switch assembly 7 installed on the mounting base 2, and the temperature sensing head of the temperature control switch assembly 7 faces the temperature control measurement cavity 14.

[0065] Specifically, the end of the flow guide member 5 facing the first opening 111 is in abutting stop cooperation with the mounting base 2, so that the flow guide member 5 can prevent the sealing member 4 in the positioning counterbore 21 from being pulled out of the mounting base 2. The temperature control measurement cavity 14 is in communication with the heating flow channel 13, and the high-temperature water in the heating flow channel 13 flows into the temperature control measurement cavity 14, and the temperature sensing head of the temperature control switch assembly 7 can sense the water temperature rise signal. If the heating device fails and the water temperature in the heating flow channel 13 rises abnormally, the temperature control switch assembly 7 will cut off the circuit of the heating member 3 to protect the safe use of the heating device.

[0066] Optionally, in order to ensure that the temperature control switch assembly 7 can first receive the water temperature change in the heating flow channel 13, the temperature control switch assembly 7 of the present application can select a temperature control switch assembly with a stainless steel cover that directly contacts the water flow in the temperature control measurement cavity 14. Compared with the prior art of covering the opening of the temperature control measurement cavity 14 with a metal sheet and arranging the temperature control switch assembly outside the metal sheet to indirectly obtain the water temperature change in the temperature control measurement cavity 14 through the metal sheet, the temperature control switch assembly 7 of the present application directly touches water and has faster heat conduction speed, more sensitive response, and more sensitive over-temperature protection tripping action. As shown in Figure 18 Finally, a grounding sheet is pressed on, the grounding sheet has a relief hole in the middle, the relief hole is used to avoid the temperature switch assembly 7, and the grounding sheet is directly pressed on the mounting base 2 without affecting the wire insertion.

[0067] The present application provides a toilet comprising the heating device according to any one of the above exemplary embodiments.

[0068] Specifically, the toilet of the present application comprises the heating device according to any one of the above exemplary embodiments, and therefore has the structural features and advantages of the heating device according to any one of the above exemplary embodiments, which will not be repeated here.

[0069] In the description of the utility model, it needs to explain that, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter" 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 utility model and simplifying the description, and are not indicative or suggestive of the structure indicated having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0070] In the description of the utility model embodiment, unless otherwise explicitly specified and limited, 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, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0071] Although the embodiments disclosed by the utility model are as above, the content described is only the embodiment adopted for the convenience of understanding the utility model, and is not used to limit the utility model. Any person skilled in the art of the utility model can make any modification and change in the implementation form and details without departing from the spirit and scope of the utility model disclosed, but the patent protection scope of the utility model still needs to be defined by the appended claims.

Claims

1. A heating device, characterized in that, The heating device comprises: a housing provided with a heating cavity and a first opening communicating with the heating cavity; a mounting seat covering the first opening and fixedly connected with the housing; and a heating element inserted into the heating cavity and connected with the mounting seat, the mounting seat and the heating element being movably connected so that the heating element can swing relative to the housing during insertion into the heating cavity, thereby adjusting the gap between the heating element and the wall of the heating cavity.

2. The heating device according to claim 1, wherein the mounting seat is provided with a mounting hole, the heating element is provided with an insertion part inserted into the mounting hole, and the insertion part and the mounting hole are gap-fitted so that the heating element can swing relative to the housing during insertion into the heating cavity; a support part is arranged between the insertion part and the mounting hole.

3. The heating device according to claim 2, wherein the mounting seat is provided with a positioning counterbore comprising a positioning groove and an avoiding groove in communication, the groove opening of the avoiding groove facing the first opening, the insertion part being arranged to be inserted into the positioning counterbore through the avoiding groove, and the avoiding gap between the outer side wall of the insertion part and the side wall of the positioning counterbore allowing the heating element to swing relative to the housing during insertion into the heating cavity; the groove opening of the avoiding groove is provided with a sealing step, the heating device further comprising a sealing element; the sealing element being limited at the sealing step and being sealingly fitted with the outer side wall of the insertion part; the support part comprising the sealing element, and the mounting hole comprising the positioning counterbore. the avoiding groove is provided with an avoiding slope between the sealing step and the positioning groove.

4. The heating device of claim 3, wherein the bottom wall of the positioning groove is provided with a wire harness hole, the insertion part being connected with a wire part at an end away from the first opening, the wire part being arranged to pass through the wire harness hole; and / or 5. The heating device of claim 3, wherein the heating element is arranged as a bent heating rod, both ends of the heating rod being provided with the insertion part, the number of the positioning counterbores being two, the two positioning counterbores corresponding to the two insertion parts one by one, and the spacing between the two positioning grooves being adapted to the spacing between the two insertion parts to limit the eccentric arrangement of the insertion part relative to the corresponding positioning groove.

6. The heating device according to any one of claims 1 to 5, wherein the heating device further comprises a flow guide arranged in the heating cavity and enclosing a heating space with the inner wall of the heating cavity and the shape of the heating element; the heating element being arranged in the heating space and enclosing a heating flow channel with the housing and the flow guide.

7. The heating device according to claim 6, wherein the heating device further comprises a gap maintaining element; the gap maintaining element being arranged in the heating cavity and supporting the end of the heating element away from the first opening to maintain the gap between the heating element and the wall of the heating space stable.

8. The heating device according to claim 7, wherein ​ The gap-keeping member is arranged to be bent from a wire, and is clamped to the heating member and the flow guide member, so that the heating member is supported on the flow guide member away from the end of the first opening, and the gap-keeping member protrudes from the heating member and has a gap with the wall of the heating space; or The gap-keeping member is arranged to be bent from a wire, and is clamped to the heating member, the flow guide member and the shell, so that the heating member is supported on the flow guide member and the shell away from the end of the first opening.

9. The heating device of claim 6, wherein, The end of the flow guide member facing the first opening is in abutment with the mounting seat, and the mounting seat and the flow guide member enclose a temperature control measurement cavity, and the heating device further comprises a temperature control switch assembly, the temperature control switch assembly is installed on the mounting seat, and a temperature measurement head of the temperature control switch assembly faces the temperature control measurement cavity.

10. A toilet characterized by A heating device comprising any one of the features of claims 1 to 9.

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