Heating device and closestool

Abstract

The utility model discloses a heating device and a closestool. The heating device comprises a shell, a flow guide part and a heating part, wherein the shell is provided with a heating cavity; the flow guide piece is arranged in the heating cavity, and a heating space is defined by the flow guide piece and the shell; the heating part comprises a heating rod arranged in the heating space, a first gap is formed between the heating rod and the shell, a second gap is formed between the heating rod and the flow guide part, the first gap and the second gap form a heating flow channel of the heating device, and the heating flow channel is communicated with the first water inlet; the cavity wall face of the heating cavity comprises a first wall face, the first wall face is matched with the outer side wall of the heating rod and forms the outer contour of the first gap, the outer wall face of the flow guide piece comprises a second wall face, and the second wall face is matched with the outer side wall of the heating rod and forms the outer contour of the second gap. The heating device has the advantages of being high in heating efficiency, good in drainage temperature stability, simple in structure and low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating equipment, in particular to a heating device and a closestool. BACKGROUND

[0002] At present, the intelligent closestool is provided with a heating device for obtaining warm water for use of the human body cleaning module of the closestool, and the heating device is usually provided in a heat storage type heating mode. Figure 1 and Figure 2 shows a heat storage type heating device of the prior art, Figure 1 is a schematic view of the appearance structure of the heat storage type heating device, Figure 2 is Figure 1 a schematic view of the cross-sectional structure. Specifically, a heating cavity 11 is arranged in the heating device, and the heating piece 3 is arranged in the heating cavity 11 to heat the water in the heating cavity 11. The power source for discharging the warm water is to inject cold water into the heating cavity 11 through the first water inlet 111. The injection of the cold water will affect the temperature of the hot water in the heating cavity 11, so that the temperature of the water continuously discharged from the shell 1 decreases, and the water flow in the heating cavity 11 is chaotic, the hot water is suspended in the upper part, and the cold water is located in the lower part, which cannot quickly heat the water in the heating cavity 11. Therefore, the heat storage type heating device has the problems of low heating efficiency and unstable temperature of the discharged water flow. Content of the utility model

[0003] The heating device and the closestool provided by the present application embodiment adopt a heating flow channel formed by a flow guide piece, a shell and a heating piece, the outer contour of the heating flow channel at least adapts to part of the outer side wall of the heating piece, the water in the heating flow channel is fully heated by contacting the heating piece, thereby improving the heating efficiency of the heating device.

[0004] The technical scheme of the present application embodiment is as follows:

[0005] A heating device, comprising:

[0006] a shell, provided with a heating cavity, the heating cavity being provided with a first water inlet;

[0007] a flow guide piece arranged in the heating cavity and forming a heating space together with the shell; and

[0008] a heating piece, comprising a heating rod arranged in the heating space, the heating rod having a first gap with the shell and a second gap with the flow guide piece, the first gap and the second gap constituting a heating flow channel of the heating device, the heating flow channel being in communication with the first water inlet;

[0009] The cavity wall surface of the heating cavity comprises a first wall surface which is adapted to the outer side wall of the heating rod and forms the outer contour of the first gap, and the outer wall surface of the flow guide comprises a second wall surface which is adapted to the outer side wall of the heating rod and forms the outer contour of the second gap, so that the outer contour of the heating flow channel at least adapts to a part of the outer side wall of the heating rod.

[0010] A toilet comprises the heating device as described in the above embodiments.

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

[0012] The heating device provided by the present application places the heating member in the heating space enclosed by the shell and the flow guide, forms the heating flow channel through the heating member, the flow guide and the shell, and the outer contour of the flow passage cross section of the heating flow channel at least adapts to a part of the outer side wall of the heating rod, so that the water in the heating flow channel can surround the outer side wall of the heating member, and the water flow path of the heating flow channel can extend along the extension direction of the heating member, thereby increasing the contact area between the water in the heating flow channel and the heating member and the heating efficiency, and facilitating rapid heating of the water in the heating flow channel. Therefore, the heating device of the present application can improve the heating efficiency and control the drainage temperature.

[0013] In addition, the heating device of the embodiments of the present application only needs three components, i.e., the shell, the flow guide and the heating member, to form the heating flow channel which surrounds the outer wall of the heating member and has a clear water flow path. Therefore, the structure of the heating device of the embodiments of the present application is simplified, the manufacturing and assembly processes are simplified, the cost is low, and the application is easy to promote.

[0014] Other features and advantages of the present application 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 application. The objects and other advantages of the present application can be achieved and obtained by the structure particularly pointed out in the description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation to the technical solutions of the present application.

[0016] Figure 1 A structural schematic diagram of a prior art heat storage type heating device;

[0017] Figure 2 A sectional structural schematic diagram of Figure 1 ;

[0018] Figure 3 A perspective structural schematic diagram of the heating device of an embodiment of the present application;

[0019] Figure 4 Figure 1 is a schematic diagram of the exploded structure of a heating device according to the present application; Figure 3

[0020] Figure 5 Figure 2 is a schematic diagram of the top structure of the heating device according to the present application; Figure 3

[0021] Figure 6 Figure 3 is a schematic diagram of the cross-sectional structure of the heating device according to the present application along the A-A direction; Figure 5

[0022] Figure 7 Figure 4 is a schematic diagram of the cross-sectional structure of the heating device according to the present application along the B-B direction; Figure 5

[0023] Figure 8 Figure 5 is a schematic diagram of the cross-sectional structure of the heating device according to the present application along the C-C direction; Figure 5

[0024] Figure 9 Figure 6 is a schematic diagram of the cross-sectional structure of the heating device according to the present application; Figure 3

[0025] Figure 10 Figure 7 is a schematic diagram of the cross-sectional structure of the heating device according to the present application without the temperature control switch assembly; Figure 3

[0026] Figure 11 Figure 8 is a schematic diagram of the structure of the middle shell according to the present application; Figure 3

[0027] Figure 12 Figure 9 is a schematic diagram of the enlarged structure of the D part of the middle shell according to the present application; Figure 11

[0028] Figure 13 Figure 10 is a schematic diagram of the cross-sectional structure of the middle shell according to the present application; Figure 4

[0029] Figure 14 Figure 11 is a schematic diagram of the three-dimensional structure of the flow guide according to the present application; Figure 4

[0030] Figure 15 Figure 12 is a schematic diagram of the cross-sectional structure of the flow guide according to the present application; Figure 14

[0031] Figure 16 Figure 13 is a schematic diagram of the assembly of the flow guide, the heating element and the mounting seat according to the present application; Figure 4

[0032] Figure 17 Figure 14 is a schematic diagram of the structure of the assembly of the flow guide, the heating element and the mounting seat according to the present application after assembly is completed; Figure 16

[0033] ​​​​​​​​​​​​​​Figure 18 for Figure 17 A schematic diagram of a cross-section of the structure;

[0034] Figure 19 This is a schematic diagram of the assembly of the housing, heating element, mounting base, and temperature control switch assembly according to an embodiment of this application;

[0035] Figure 20 This is an exploded view of the heating device according to another embodiment of this application;

[0036] Figure 21 for Figure 20 A schematic diagram of a cross-section of the heating device;

[0037] Figure 22 for Figure 20 A cross-sectional structural diagram of a heating device without the temperature control switch assembly;

[0038] Figure 23 for Figure 20 A schematic diagram of the structure of the heating device housing;

[0039] Figure 24 for Figure 20 A schematic diagram of the flow guide component of the heating device;

[0040] Figure 25 This is a schematic diagram of the structure of a heating device according to another embodiment of this application;

[0041] Figure 26 for Figure 25 A schematic diagram of a cross-section of the heating device;

[0042] Figure 27 for Figure 25 A schematic diagram of the heating element in a heating device;

[0043] Figure 28 for Figure 25 A schematic diagram of the structure of the shell in the heating device;

[0044] Figure 29 for Figure 25 A schematic diagram of the flow guide component of the heating device;

[0045] Figure 30 for Figure 25 A schematic diagram of the structure after the flow guide, heating element and mounting base are assembled;

[0046] Figure 31 for Figure 30 A schematic diagram of a cross-section of the structure;

[0047] Figure 32 This is a schematic cross-sectional view of a heating device according to another embodiment of this application;

[0048] Figure 33 For Figure 32 The structural diagram and water flow direction of the heating device removing one angle of the shell;

[0049] Figure 34 For Figure 32 The structural diagram and water flow direction of the heating device removing another angle of the shell;

[0050] Figure 35 The cross-sectional structural diagram of the heating device of another embodiment of the present application;

[0051] Figure 36 The structural diagram of the spiral flow channel of the heating device of another embodiment of the present application;

[0052] Figure 37 The cross-sectional structural diagram of the heating device with a spiral flow channel. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the present application more clear and apparent, 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.

[0054] As Figure 1 and Figure 2 shown, the prior art heat storage type heating device, the shell 1 is provided with a heating cavity 11, the heating element 3 is placed in the heating cavity 11 to heat the water in the heating cavity 11. When the cold water is injected into the heating cavity 11 from the first water inlet 111 for driving the water flow in the heating cavity 11 to discharge warm water, the high-temperature water in the heating cavity 11 flows to the upper part, and the low-temperature water flows to the lower part, so that the water flow direction in the heating cavity 11 of the heat storage type heating device is uncertain and the water flow is chaotic, and the water temperature in the heating cavity 11 is not uniformly mixed, and the temperature stability of the water flow discharged from the shell 1 is poor. And the temperature sensor arranged on the upper wall of the shell 1 cannot accurately detect the temperature of the cold water entering the bottom of the heating cavity 11 so as to heat the cold water entering the heating cavity 11 in time. Therefore, the heat storage type heating device has the problems of low heating efficiency, unstable water flow temperature discharged, large volume, high standby power consumption and lagging heating control.

[0055] In order to solve the above problems, the embodiments of the present application provide a heating device, as Figure 6 , Figures 20-21 , Figure 26 , Figure 32 , Figure 37As shown, it comprises a shell 1, a flow guide 2 and a heating element 3. The shell 1 is provided with a heating cavity 11, and the heating cavity 11 is provided with a first water inlet 111. The flow guide 2 is arranged in the heating cavity 11 and cooperates with the shell 1 to form a heating space 112.

[0056] As shown, the heating element 3 comprises a heating rod 31 arranged in the heating space 112, and the heating rod 31 has a first gap 114 with the shell 1 and a second gap 115 with the flow guide 2. The first gap 114 and the second gap 115 form a heating flow channel 113 of the heating device, and the heating flow channel 113 is in communication with the first water inlet 111. The cavity wall surface of the heating cavity 11 comprises a first wall surface which is adapted to the outer side wall of the heating rod 31 and forms the outer contour of the first gap 114. The outer wall surface of the flow guide 2 comprises a second wall surface which is adapted to the outer side wall of the heating rod 31 and forms the outer contour of the second gap 115, so that the outer contour of the heating flow channel 113 is adapted to at least part of the outer side wall of the heating rod 31. Figures 6-8 、 Figures 21-22 、 Figure 26 、 Figure 36 As shown, the heating element 3 comprises a heating rod 31 arranged in the heating space 112, and the heating rod 31 has a first gap 114 with the shell 1 and a second gap 115 with the flow guide 2. The first gap 114 and the second gap 115 form a heating flow channel 113 of the heating device, and the heating flow channel 113 is in communication with the first water inlet 111. The cavity wall surface of the heating cavity 11 comprises a first wall surface which is adapted to the outer side wall of the heating rod 31 and forms the outer contour of the first gap 114. The outer wall surface of the flow guide 2 comprises a second wall surface which is adapted to the outer side wall of the heating rod 31 and forms the outer contour of the second gap 115, so that the outer contour of the heating flow channel 113 is adapted to at least part of the outer side wall of the heating rod 31.

[0057] Specifically, the heating device of the embodiment of the present application encloses the heating space 112 by the shell 1 and the flow guide 2 arranged in the shell 1. The heating element 3 is arranged in the heating space 112, and the heating flow channel 113 is enclosed by the heating element 3, the flow guide 2 and the shell 1. The heating rod 31 has the first gap 114 with the shell 1 and the second gap 115 with the flow guide 2, and the outer contour of the flow cross section of the heating flow channel 113 is adapted to at least part of the outer side wall of the heating rod 31. In this way, the heating flow channel 113 can surround the outer wall of the heating element 2, and can extend along the extension direction of the heating element 2. The heating device of the embodiment of the present application is provided with the heating flow channel 113 in communication with the first water inlet 111. The heating device of the present application is also provided with a first water outlet 121. The external water source enters the heating flow channel 113 from the first water inlet 111 and flows out from the first water outlet 121. By reasonably arranging the positional distribution relationship between the first water inlet 111, the first water outlet 121 and the heating flow channel 113, the water flow in the heating flow channel 113 can surround the outer wall of the heating element 3, and the water flow path in the heating flow channel 113 extends along the length extension direction of the heating element 3. Therefore, the water flow in the heating flow channel 113 can fully contact the heating element 3, the contact area is large and the heating speed is fast, which is conducive to the rapid heating of the water in the heating flow channel 113 and ensures the stability of the water outlet temperature of the heating device. Therefore, the heating device of the present application is an instant heating device, which can improve the heating efficiency, has fast drainage speed and good water outlet temperature stability.

[0058] And, the flow communication gaps are arranged between the heating rod 31 and the shell 1, and between the heating rod 31 and the flow guide 2, which is beneficial to increase the volume of the heating flow channel 113, so that the water in the heating cavity 11 can be heated and discharged quickly.

[0059] And, the heating device of the embodiment of the present application places the flow guide 2 in the heating cavity 11 of the shell 1, and places the heating member 3 in the heating space 112, so that the heating flow channel 113 surrounding the outer wall of the heating member 3 can be enclosed by only three components of the shell 1, the flow guide 2 and the heating member 3, and the water flow path is clear. Therefore, the structure of the heating device of the embodiment of the present application is simplified, the manufacturing and assembly process is simplified, the cost is low, and the application is easy to promote.

[0060] It can be understood that the heating rod 31 of the present application can be in various shapes such as U-shaped, meandering serpentine shape, rod shape, etc.

[0061] It is worth noting that, Figures 3-19 is a structural schematic diagram of the heating device of an embodiment of the present application, wherein the heating member 3 is a U-shaped heating rod 31, and the flow guide 2 includes a flow channel forming portion 25 and a transition portion 26. Figures 20-24 is a structural schematic diagram of the heating device of another embodiment of the present application, wherein the heating member 3 is a U-shaped heating rod 31, and the flow guide 2 does not have a transition portion 26. Figures 25-31 is a structural schematic diagram of the heating device of another embodiment of the present application, wherein the heating member 3 is in a meandering serpentine shape. Figures 32-35 is a structural schematic diagram of the heating device of another embodiment of the present application, wherein the first partition rib 4 is arranged in the heating flow channel 113, and the heating flow channel 113 is a laminated flow path. Figures 36-37 is a structural schematic diagram of the heating device of another embodiment of the present application, wherein the second partition rib 5 is arranged in the heating flow channel 113, and the heating flow channel 113 is a spiral flow channel 118. It can be understood that the heating device of the present application is not limited to the embodiments shown in the drawings, and other structural forms can also be provided, and the heating device of the present application is within the scope of the present application.

[0062] In an exemplary embodiment, the gap values of the first gap 114 and the second gap 115 are equal.

[0063] Specifically, the gap values of the first gap 114 and the second gap 115 are equal, so that the heating effect of the heating member 3 on the water in the first gap 114 and the second gap 115 is similar, which is conducive to the uniform heating of the water at different positions in the heating flow channel 113, and conducive to the formation of laminar flow instead of mixed flow in the cross section of the heating flow channel 113, so that the water in the heating flow channel 113 is quickly heated and discharged. Here, the equal gap values of the first gap 114 and the second gap 115 refer to substantially equal, not absolutely equal. Due to the machining and assembly errors of the components of the heating device, the actual measured gap values of the first gap 114 and the second gap 115 are equal within a certain error range.

[0064] In an exemplary embodiment, as shown in Figure 6 、 Figure 8 、 Figure 21 and Figure 26 , the outer contour of the cross section of the heating rod 31 perpendicular to the length extension direction thereof is circular, and the first wall surface and the second wall surface are circular arc surfaces.

[0065] The axis formed by the first wall surface and the second wall surface coincides with the axis of the heating rod 31.

[0066] Specifically, the cross section of the heating rod 31 perpendicular to the length direction thereof is designed to be circular, and the first wall surface and the second wall surface are designed to be circular arc-shaped, so that the outer shape of the heating rod 31 and the first wall surface and the second wall surface is simple and easy to process and design.

[0067] The axis formed by the first wall surface and the second wall surface coincides with the axis of the heating rod 31, that is, the heating flow channel 113 is a tubular structure sleeved outside the heating rod 31 and coaxial with the heating rod 31. In this way, the outer side wall of the heating rod 31 generates heat, and the water at different positions in the heating flow channel 113 is heated and warmed up uniformly.

[0068] In an exemplary embodiment, the cross section of the heating rod 31 of the embodiment of the present application can be configured to be rectangular, polygonal, and other irregular shapes, and the gap values of the first gap 114 and the second gap 115 are equal, which are all within the protection scope of the present application.

[0069] In an exemplary embodiment, as shown in Figures 6-8 、 Figure 10 、 Figures 21-22 、 Figure 26 , the cavity wall of the heating cavity 11 is provided with a first concave surface 116 matched with the heating rod 31, the flow guide member 2 is provided with a second concave surface 21 matched with the heating rod 31, the first gap 114 is located between the first concave surface 116 and the heating rod 31, and the second gap 115 is located between the second concave surface 21 and the heating rod 31; the first concave surface 116 and the second concave surface 21 are arranged to be concentric with the heating rod 31 and have equal spacing.

[0070] Specifically, the first concave surface 116 and the second concave surface 21 are arranged concentrically with the heating rod 31 and have equal spacing, so that the cross section of the heating flow channel 113 is annular around the outer wall of the heating rod 31, which is beneficial to increase the contact area between the water in the heating flow channel 113 and the outer wall of the heating rod 31, thereby improving the heating efficiency of the heating device and rapidly heating the water in the heating cavity 11. And the gap of the flow cross section of the heating flow channel 113 is uniform, so that the heating effect of the heating rod 31 on the water at different positions in the heating flow channel 113 is balanced, which is beneficial to stabilize the temperature of the water discharged by the heating device. And the first concave surface 116 is arranged in the heating cavity 11, and the second concave surface 21 is arranged in the flow guide 2, which is used to form part of the side wall surface of the heating flow channel 113. This structure design is easy to design, process and assemble.

[0071] It can be understood that the first concave surface 116 and the second concave surface 21 can be grooves with various shapes such as circular arc, rectangle, polygon and the like in cross section. The cross section of the heating rod 31 can be various shapes such as circle, ellipse, rectangle, polygon and the like.

[0072] In an exemplary embodiment, as shown in Figures 32 to 35 The heating device further comprises at least one first partition rib 4 extending along the length extension direction of the heating rod 31, and the first partition rib 4 divides the heating flow channel 113 into at least two sub-heating flow channels extending along the length extension direction of the heating rod 31.

[0073] The sub-heating flow channels are sequentially communicated.

[0074] Specifically, the heating flow channel 113 is divided into a plurality of sub-heating flow channels distributed in layers, so that the length of the water flow path of the heating cavity 11 is doubled, and the flow cross section of the heating flow channel 113 is reduced, so that the flow rate of the heating flow channel 113 is multiplied, which is beneficial to rapidly discharge warm water by the heating device and uniformly mix the water temperature of the water flowing through the heating flow channel 113.

[0075] In an exemplary embodiment, as shown in Figures 32-35 The first partition rib 4 is arranged in the heating flow channel 113, and the first partition rib 4 comprises first sub-ribs 41 and second sub-ribs 42 arranged in parallel and spaced apart; the first sub-ribs 41 and the second sub-ribs 42 extend along the length extension direction of the heating flow channel 113 and divide the heating flow channel 113 into a first sub-flow channel 1131 and a second sub-flow channel 1132.

[0076] The first sub-flow channel 1131 is communicated with the first water inlet 111, and the ends of the first sub-ribs 41 and the second sub-ribs 42 away from the first water inlet 111 are provided with a communication port 117, and the first sub-flow channel 1131 and the second sub-flow channel 1132 are communicated through the communication port 117.

[0077] Specifically, Figures 32-34This is a schematic diagram of the structure of a heating device according to an embodiment of this application. Figure 35 This is a schematic diagram of the heating device according to another embodiment of this application. In the above embodiments, the heating channels 113 are all stacked channels. Figures 32-34 The arrows in the diagram indicate the water flow direction of the heating channel 113 in the stack. Water enters the first sub-channel 1131 from the first inlet 111, flows along the first sub-channel 1131, and then... Figure 34 As shown, the water enters the second sub-channel 1132 through the connecting port 117 and is finally discharged from the first outlet 121. The first sub-channel 1131 and the second sub-channel 1132 are stacked channels in the vertical direction. Figure 35 In the embodiment of the heating device, the first sub-rib 41 and the second sub-rib 42 divide the heating channel 113 into stacked channels spaced apart along the horizontal direction. The heating channel 113 enters the first sub-channel 1131 from the first inlet 111 and then enters the second sub-channel 1132.

[0078] It is understandable that by rationally arranging the positional relationship between the first inlet 111 and the first outlet 121 and the heating channel 113, it is also possible to... Figure 32 The first sub-channel 1131 can be adjusted to be positioned above the second sub-channel 1132, or... Figure 35 The first sub-channel 1131 is adjusted to be located inside the second sub-channel 1132, both of which are within the protection scope of this application.

[0079] It is understandable that multiple first baffles 4 can be provided, thereby dividing the heating flow channel 113 into multiple stacked sub-flow channels.

[0080] It is worth noting that the heating channel 113 is divided into two or more layers of sub-channels, which doubles the length of the water flow path in the heating chamber 11 and reduces the cross-sectional area of ​​the heating channel 113. This doubles the flow velocity in the heating channel 113, which is beneficial for the heating device to quickly discharge warm water and ensures that the water flowing through the heating channel 113 is evenly mixed in temperature. The heating channel 113 is configured with multiple layers of sub-channels. The reduced cross-sectional area of ​​each sub-channel also reduces the temperature difference between the cross-sections, resulting in better water temperature stability after the water flows through multiple sub-channels.

[0081] In one exemplary embodiment, the first rib 4 is fixed to the heating rod 31; or, the first rib 4 is fixed to the cavity wall of the heating chamber 11 and the outer wall of the guide member 2.

[0082] Specifically, the first baffle 4 can be made of stainless steel wire or other materials with good rigidity and resistance to breakage. Thermoplastic materials should not be used for the first baffle 4. Deformation of the first baffle 4 due to the heat from the water flow should be avoided, which could damage the shape of the multiple sub-channels in the stack, thus ensuring that the first baffle 4 safely and reliably divides the heating channel 113.

[0083] In one exemplary embodiment, as shown in Figure 35 , the first sub-fins 41 and the second sub-fins 42 are arranged in a vertical direction; or, as shown in Figure 32 , the first sub-fins 41 and the second sub-fins 42 are arranged in a horizontal direction.

[0084] Specifically, Figure 35 , the first sub-fins 41 and the second sub-fins 42 arranged in a vertical direction divide the heating flow channel 113 into the first sub-flow channel 1131 and the second sub-flow channel 1132 arranged in a horizontal direction, thereby increasing the flow path length of the heating flow channel 113 and shortening the flow cross-sectional area of the heating flow channel 113, which is conducive to more uniform water temperature mixing. Figure 32 , the first sub-fins 41 and the second sub-fins 42 arranged in a horizontal direction divide the heating flow channel 113 into the first sub-flow channel 1131 and the second sub-flow channel 1132 arranged in a vertical direction, wherein the first sub-flow channel 1131 can be arranged below the second sub-flow channel 1132, thereby facilitating the upward flow and discharge of bubbles in the heating flow channel 113.

[0085] In one exemplary embodiment, as shown in Figure 10 , Figure 22 , the extension direction of the heating flow channel 113 is U-shaped.

[0086] Specifically, in the embodiments of the heating device shown in Figure 4 and Figure 20 , the heating rod 31 is U-shaped, the flow guide 2 is inserted into the avoidance space 32 enclosed by the heating element 3 and the mounting seat 6, and then the heating element 3 and the flow guide 2 are inserted into the heating cavity 11 of the shell 1, so that the outer side wall of the heating element 3, the side wall of the flow guide 2, and the inner side wall of the shell 1 enclose the heating flow channel 113 with a U-shaped extension direction.

[0087] The cross section of the U-shaped heating flow channel 113 is easily arranged in a form with uniform gap distribution, so that the flow path cross section of the heating flow channel 113 has good consistency, so that the flow path is basically laminar, so that the water flow replacement rate of the U-shaped heating flow channel 113 is high, which can improve the heating adjustment response speed of the heating device. In the initial state of the heating device, when the heating rod 31 starts to heat, the water flow that starts to rise in temperature in the heating flow channel 113 quickly displaces the cold water, and as time goes on, the water temperature rises steadily. And when the heating power of the heating device is changed, the water replacement rate in the heating cavity 11 is high, which avoids the influence of residual hot water or cold water on the heating effect of the heating device, so that the water temperature in the heating cavity 11 can quickly respond, and the system control sensitivity is improved.

[0088] In an exemplary embodiment, as shown in Figures 26-30 the extension direction of the heating flow channel 113 is serpentine.

[0089] Specifically, in the embodiment of the heating device as shown in Figure 4 and Figure 20 the heating rod 31 extends in a winding serpentine, and the side wall of the flow guide 2 is provided with a second recess 21 also extending in a winding serpentine matching the side wall of the heating rod 31, as shown in Figure 27 , Figure 29 and Figure 30 the flow guide 2 is inserted into the avoiding space 32 enclosed by the heating member 3 and the mounting seat 6, and then the heating member 3 and the flow guide 2 are inserted into the heating cavity 11 of the shell 1. In this way, as shown in Figure 26 the outer side wall of the heating rod 31, the side wall of the flow guide 2 and the inner side wall of the shell 1 enclose the heating flow channel 113 extending in a serpentine. One end of the serpentine heating flow channel 113 is communicated with the first water inlet 111 to supply water to the heating flow channel 113.

[0090] The serpentine heating flow channel 113 can design a longer water flow path, thereby increasing the water capacity of the heating flow channel 113 and making the water temperature in the heating flow channel 113 more uniform.

[0091] In an exemplary embodiment, as shown in Figure 36 and Figure 37 the heating device further comprises a second spiral partition 5 wound on the outer side wall of the heating rod 31, and the second spiral partition 5, the heating rod 31, the shell 1 and the flow guide 2 enclose a spiral flow channel 118.

[0092] Specifically, compared with the U-shaped or serpentine heating flow channel 113, the water flow path of the spiral flow channel 118 can be designed to be longer, thereby further improving the water temperature uniformity in the heating flow channel 113 and avoiding the water temperature stratification phenomenon of hot water rising and cold water sinking in the heating flow channel 113.

[0093] The length of the water flow path of the spiral flow channel 118 is longer than that of the laminated flow channel provided with the first partition 4, and the cross section of the flow path is smaller and the flow velocity is faster. When the water flows along the spiral flow channel 118, the water flow is in a turbulent state, and the inner layer water in contact with the side wall surface of the heating rod 31 is always in a displacement state with the outer layer water of the cross section of the flow path. Therefore, the water has a mixing effect during the flow process, and the water temperature in the spiral flow channel 118 is mixed uniformly. The water on the surface of the heating rod 31 is quickly replaced, thereby reducing the probability of the water outside the side wall surface of the heating rod 31 rising to the boiling point, and further reducing the generation of bubbles. Moreover, the water flow velocity of the spiral flow channel 118 is fast, which reduces the probability of bubbles gathering and becoming large, and is also beneficial to the water flow carrying away the bubbles.

[0094] It can be understood that the second partition rib 5 can be arranged as a spiral spring, the spiral spring is sleeved on the outer sidewall of the heating rod 31, and the spiral spring, the heating rod 31, the shell 1 and the flow guide 2 jointly enclose the spiral flow channel 118.

[0095] Optionally, the second partition rib 5 can be arranged in connection with the heating rod 31, or the second partition rib 5 can be arranged in connection with the cavity wall of the heating cavity 11 and the outer sidewall of the flow guide 2.

[0096] In a specific assembly process, the second partition rib 5 can be sleeved on the heating rod 31, the second partition rib 5 and the heating rod 31 are connected together, and then the heating rod 31 and the second partition rib 5 are assembled into the heating cavity 11; or the second partition rib 5 can be connected with the cavity wall of the heating cavity 11 and the outer sidewall of the flow guide 2, and then the heating rod 31 is inserted into the channel extending along the length direction of the second partition rib 5.

[0097] The specific structural features and advantages of various embodiments of the heating flow channel 113 of the heating device of the present application are discussed above, and the structural features of the assembly connection structure, the mixing cavity 12, the temperature control switch assembly 7 and the temperature sensor of the heating device of the present application are discussed below.

[0098] In an exemplary embodiment, as shown in Figure 6 , Figures 11-15 , Figure 21 and Figures 23-24 , the flow guide 2 is provided with a clamping portion 22, the cavity wall of the heating cavity 11 is provided with a clamping matching portion 119, and the clamping portion 22 and the clamping matching portion 119 are clamped to fix the flow guide 2 to the shell 1.

[0099] Specifically, the flow guide 2 and the shell 1 are connected by clamping, and the connection structure is simple and easy to process and assemble. It can be understood that the connection mode between the flow guide 2 and the shell 1 is not limited to clamping, but can also be designed as screwing, bonding and other forms, which are all within the protection scope of the present application.

[0100] The flow guide 2 and the shell 1 are clamped and connected, which is beneficial to ensure the sealing of the flow channel wall surface of the heating flow channel 113, prevent water in the heating flow channel 113 from seeping into the connection position of the flow guide 2 and the shell 1, and ensure the water to flow in the space of the heating flow channel 113 to heat and warm up, so that the water in the heating cavity 11 can flow in the set space.

[0101] In an exemplary embodiment, as shown in Figure 14 , the clamping portion 22 includes two side wings 221 arranged on the outer sidewall of the flow guide 2, and the side wings 221 are provided with support ribs 2211. As shown in Figure 11 and Figure 12 , the clamping matching portion 119 includes two clamping matching side wings 1191 arranged on the cavity wall of the heating cavity 11, and the clamping matching side wings 1191 are provided with clamping matching support ribs 1192.As shown, the clamping fitting part 119 comprises a stepped groove (not shown in the figure) and a limiting groove 1191 recessed in the groove wall of the stepped groove. The side wing 221 is limited in the stepped groove, and the supporting rib 2211 on the side wing 221 is clamped in the limiting groove 1191.

[0102] Specifically, the two side wings 221 of the outer side wall of the flow guide 2 are clamped and fitted with the two stepped grooves of the cavity wall of the heating cavity 11 respectively, and the supporting rib 2211 on the side wing 221 of the outer side wall of the flow guide 2 is clamped and fitted with the limiting groove 1191 in the stepped groove of the cavity wall of the heating cavity 11 respectively, so that the connection between the flow guide 2 and the shell 1 at the upper part of the heating flow channel 113 is more firm and sealed, preventing water in the heating flow channel 113 from seeping into the connection position between the flow guide 2 and the shell 1, so that the water in the heating cavity 11 can flow in the set space.

[0103] The supporting rib 2211 is arranged on the side wing 221 of the flow guide 2, and the limiting groove 1191 is arranged in the stepped groove of the cavity wall of the heating cavity 11, so that the clamping force of the clamping fitting structure of the flow guide 2 and the heating cavity 11 can be enhanced, and the flow resistance of water in the heating flow channel 113 seeping into the inside of the clamping fitting structure can be increased.

[0104] It can be understood that the sealed connection structure between the flow guide 2 and the shell 1 at the upper part of the heating flow channel 113 of the present application can also be arranged in other structural forms, not limited to the clamping fitting form.

[0105] In an exemplary embodiment, as shown in Figures 14-18 , Figure 27 , Figures 29-30 As shown, the heating element 3 is a structure extending in a bent manner, the heating element 3 has an avoiding space 32, the bottom profile 23 of the flow guide 2 is smaller than the avoiding space 32, and the upper profile 24 of the flow guide 2 is larger than the avoiding space 32, so that the flow guide 2 can be inserted into the avoiding space 32 from top to bottom and supported on the heating element 3.

[0106] Specifically, Figure 16 As shown in the assembly schematic view of the flow guide 2 and the heating element 3 of an embodiment of the present application, Figure 16 the flow guide 2 is located above the heating element 3, Figure 16 the arrow direction represents the installation moving direction of the flow guide 2. Since the bottom profile 23 of the flow guide 2 is smaller than the avoiding space 32 of the heating element 3, the bottom profile 23 of the flow guide 2 can pass through the avoiding space 32 when the flow guide 2 moves downward. Since the upper profile 24 of the flow guide 2 is larger than the avoiding space 32, the upper profile 24 of the flow guide 2 cannot pass through the avoiding space 32 but can only be located at the upper part of the heating element 3, so that the flow guide 2 and the heating element 3 are assembled into the structural form as shown. Figures 17 to 18 The assembly connection structure is simple, easy to process and design, and easy to install and disassemble.

[0107] Thus, in combination with the clamping structure of the side wing 221 of the flow guide 2 and the stepped groove of the heating cavity 11, the second gap 115 can be formed between the side wall surface of the flow guide 2 and the outer side wall of the heating element 3, and a part of the heating flow channel 113 surrounding the outer side wall of the heating element 3 is formed.

[0108] In an exemplary embodiment, as shown in Figure 7 、 Figure 9 and Figures 19-20 , the heating cavity 11 has a first opening 131, and the heating device further comprises a mounting seat 6 connected to the shell 1 and covering the first opening 131; the heating element 3 is supported by the mounting seat 6.

[0109] Specifically, the first opening 131 is arranged at one end of the heating cavity 11, so that the heating element 3 can be inserted into the heating cavity 11 through the first opening 131. The mounting seat 6 supports the heating element 3 and covers the first opening 131, so that the heating cavity 11 becomes a sealed chamber, preventing water in the heating cavity 11 from leaking outside the shell 1.

[0110] In an exemplary embodiment, as shown in Figure 8 、 Figure 11 、 Figure 13 、 Figures 20-21 、 Figure 23 、 Figure 28 , the shell 1 further has a mixing cavity 12, which is in communication with the heating flow channel 113, and the mixing cavity 12 is provided with a first water outlet 121.

[0111] The mixing cavity 12 is provided with a second opening 132, and the mounting seat 6 covers the second opening 132 when connected to the shell 1.

[0112] Specifically, the heating device of the present application can only have the heating cavity 11, so that the heating device only has the function of heating water; the heating device of the present application can also have the heating cavity 11 and the mixing cavity 12 at the same time, so that the heating device has the functions of heating water and mixing water. The mixing cavity 12 has the advantage of mixing water to make the water temperature uniform.

[0113] When the heating device of the present application has the functions of heating water and mixing water, the water flow path is: water enters the heating cavity 11 from the first water inlet 111, flows along the heating flow channel 113, is heated and warmed by the heating element 2, then enters the mixing cavity 12 to mix and evenly distribute the water temperature, and finally flows out from the first water outlet 121.

[0114] The water entering the heating flow channel 113 from the first water inlet 111 is heated by the heating member 3, and the water flow in the heating flow channel 113 is stratified by temperature. The water surrounding the heating member 3 and close to the outer surface of the heating member 3 can be quickly heated, the water far from the outer surface of the heating member 3 is poorly heated, and the high-temperature water flow has an upward trend, and the low-temperature water flow has a downward trend, so that the water temperature at the upper part of the heating flow channel 113 is relatively high, and the water temperature at the lower part of the heating flow channel 113 is relatively low. Therefore, the water flow in the heating flow channel 113 and the water flow flowing out of the heating flow channel 113 are not balanced in temperature. The water flowing out of the heating flow channel 113 can flow into the mixing chamber 12 to further mix and flow, so that the water temperature is more uniform, thereby ensuring the stability of the water flow temperature discharged from the heating device. The first water outlet 121 is used to discharge the water flow with more uniform water temperature mixed in the mixing chamber 12.

[0115] In an exemplary embodiment, as shown in Figure 7 and Figure 9 The end of the flow guide member 2 facing the mounting seat 6 and the mounting seat 6 enclose a temperature measurement chamber 14, and the temperature measurement chamber 14 is in communication with the heating flow channel 113 and the mixing chamber 12. In the direction of the water flow, the temperature measurement chamber 14 is located on the downstream side of the heating flow channel 113 and on the upstream side of the mixing chamber 12.

[0116] The heating device further comprises a temperature control switch assembly 7, and the temperature control switch assembly 7 is installed on the side of the mounting seat 6 away from the temperature measurement chamber 14.

[0117] Specifically, the temperature control switch assembly 7 is installed on the mounting seat 6, and the temperature control switch assembly 7 is arranged opposite to the temperature measurement chamber 14. The water is heated in the heating flow channel 113, and then enters the temperature measurement chamber 14. The water temperature in the temperature measurement chamber 14 can be transmitted to the temperature control switch assembly 7 through the mounting seat 6. In the direction of the water flow, the temperature measurement chamber 14 is located between the heating flow channel 113 and the mixing chamber 12. The water in the heating flow channel 113 is heated, and its water temperature can be fed back to the temperature control switch assembly 7 in time. Compared with the prior art of measuring the water temperature in the mixing chamber 12 by using the temperature control switch assembly 7, the temperature control switch assembly 7 of the present application is more sensitive to the water temperature fluctuation in the heating flow channel 113.

[0118] In the embodiment of the present application, when the heating device is normally working, the water temperature heated by the heating element 3 is basically stable, and the water temperature difference between the temperature measuring cavity 14 and the mixing cavity 12 is small. If the heating device system is out of control and abnormally heated, the water in the heating flow channel 113 is abnormally heated, the water temperature rises rapidly, the water temperature at the end of the heating flow channel 113 is the highest, the temperature of the water flowing into the temperature measuring cavity 14 also rises rapidly, and the temperature data at the position of the temperature measuring cavity 14 is more sensitive, so that the temperature control switch assembly 7 can absorb more heat more quickly and react more quickly. Since the volume inside the mixing cavity 12 is usually large, more heat and a longer time are required to raise the water temperature in the mixing cavity 12 to the same as the water temperature in the temperature measuring cavity 14, so if the temperature control switch assembly 7 is installed to the mixing cavity 12, the temperature data transmitted by the mixing cavity 12 has a lagging nature.

[0119] Figure 19 The assembly structure diagram of the housing 1, the heating element 3, the mounting seat 6 and the temperature control switch assembly 7 of the heating device in an embodiment of the present application is shown. Figure 19 The arrow direction indicates the installation and movement direction of the components. After the heating element 3, the flow guide 2 and the mounting seat 6 are assembled together, they are inserted into the heating cavity 11 of the housing 1, so that the mounting seat 6 covers the opening 13 of the housing 1, the temperature control switch assembly 7 is installed to the side of the mounting seat 6 away from the heating cavity 11, and the temperature control switch assembly 7 is arranged opposite to the temperature measuring cavity 14, so as to perform control operation according to the water flow temperature in the temperature measuring cavity 14.

[0120] In an exemplary embodiment, as shown in Figure 7 , Figure 11 and Figure 14 , the mixing cavity 12 is located on the upper side of the heating cavity 11, the flow guide 2 includes the flow channel forming portion 25 and the transition portion 26 connected to each other, and the transition portion 26 is located above the flow channel forming portion 25; the heating cavity 11 includes the heating cavity main body 11-10 and the transition cavity 11-11 connected to each other, and the transition cavity 11-11 is located on the upper side of the heating cavity main body 11-10; the flow channel forming portion 25 is located in the heating cavity main body 11-10 and encloses the heating flow channel 113 together with the housing 1 and the heating element 3; and the transition portion 26 is located in the transition cavity 11-11 and abuts against the cavity wall of the transition cavity 11-11.

[0121] As shown in Figure 14 , the flow channel forming portion 25 is provided with the first flow guide channel, and the second water inlet 251 and the third water outlet 252 respectively communicating with both ends of the first flow guide channel; the transition portion 26 is provided with the second flow guide channel, and the third water inlet 261 and the fourth water outlet 262 respectively communicating with both ends of the second flow guide channel; the third water outlet 252 and the third water inlet 261 are provided on the cavity wall of the temperature measuring cavity 14; as shown in Figure 13As shown, the cavity wall of the transition cavity 11-11 is provided with a second water outlet 11-12 corresponding to the fourth water outlet 262, the second water outlet 11-12 is in communication with the mixing cavity 12, so that the temperature measuring cavity 14 is in communication with the heating flow channel 113 through the first flow channel and in communication with the mixing cavity 12 through the second flow channel.

[0122] Specifically, Figure 7 and Figure 14 In the embodiment shown, the temperature measuring cavity 14 is provided as a spiral flow channel, the third water outlet 252 of the water enters the first flow channel and then flows into the spiral flow channel, according to the arrow direction shown, Figure 7 then flows into the second flow channel from the third water inlet 261, and finally enters the mixing cavity 12 through the second water outlet 11-12. The third water outlet 252 of the spiral flow channel is located above the third water inlet 261, which is conducive to the upward flow of the heated water in the temperature measuring cavity 14 and the upward flow of the bubbles in the water flow. The contact area between the spiral flow channel and the temperature control switch assembly 7 is as large as possible to improve the heat conduction effect of the mounting seat 6, so that the water temperature in the temperature measuring cavity 14 is quickly transmitted to the temperature control switch assembly 7. Moreover, the depth of the spiral flow channel along the axial direction of the heating rod 31 is as small as possible to improve the water flow speed in the temperature measuring cavity 14, which is conducive to the flow of bubbles in the water.

[0123] Optionally, as shown, Figure 14 The transition part 26 is provided as an arc-shaped convex part, the cavity wall of the transition cavity 11-11 is provided as an arch-shaped part, the temperature measuring cavity 14 is arranged at one end of the arc-shaped convex part and the flow channel forming part 25 towards the mounting seat 6, and is arranged to extend at least partially along the circumferential direction of the arc-shaped convex part.

[0124] Specifically, the vertical distance between the upper wall surface of the arch-shaped part (i.e. the part of the lower wall surface of the mixing cavity 12 located in the arch-shaped part) and the upper wall surface of the mixing cavity 12 is smaller than the vertical distance between the other part of the lower wall surface of the mixing cavity 12 except the arch-shaped part and the upper wall surface of the mixing cavity 12. Thus, after passing the position of the arch-shaped part, the water entering the mixing cavity 12 has a smaller flow cross section, so that the water flow speed is increased, and the water flow speed is increased, so that the water is mixed more uniformly, and the water temperature consistency is better.

[0125] In an exemplary embodiment, as shown in Figure 7 , Figure 8 and Figure 19 The heating device further comprises a temperature sensor 8, the temperature sensor 8 is mounted to the housing 1, and the probe of the temperature sensor 8 is inserted into the mixing cavity 12.

[0126] Specifically, the water temperature consistency in the mixing cavity 12 is better than that in the heating cavity 11, and the probe of the temperature sensor 8 measures the water temperature in the mixing cavity 12, which can better reflect the water temperature data in the heating device.

[0127] Optionally, as shown in Figure 13 The probe of the temperature sensor 8 can be inserted above the second water outlet 11-12, so that the temperature sensor 8 can timely detect the temperature data of the water flowing out of the temperature measuring cavity 14.

[0128] Optionally, as shown in Figure 3 and Figure 13 The upper wall surface of the shell 1 is provided with a mounting portion, and the end of the temperature sensor 8 away from the probe is connected to the mounting portion.

[0129] The installation process of the heating device of an embodiment of the present application is as follows: the heating member 3 is installed to the mounting seat 6, then the flow guide member 2 is inserted into the avoiding space 32 from above the heating member 3, so that the lower profile 23 of the flow guide member 2 passes through the avoiding space 32, then the heating member 3 and the flow guide member 2 are inserted into the heating cavity 11 of the shell 1 away from the mounting seat 6, so that the mounting seat 6 covers the opening 13 of the shell 1, thus the side wall of the flow guide member 2, the heating member 3 and the side wall of the heating cavity 11 enclose the instant heating flow channel 113, and the mounting seat 6 and the flow guide member 2 enclose the temperature measuring cavity 14, and the temperature control switch assembly 7 is installed to the side of the mounting seat 6 opposite to the temperature measuring cavity 14. The temperature sensor 8 is installed to the wall surface of the shell 1, so that the probe of the temperature sensor 8 is inserted into the mixing cavity 12. If the heating flow channel 113 is a laminated flow path, the first partition rib 4 needs to be installed between the heating member 3 and the shell 1, and between the heating member 3 and the flow guide member 2; if the heating flow channel 113 is a spiral flow channel 118, the second partition rib 5 needs to be wound on the outer wall of the heating member 3.

[0130] An embodiment of the present application provides a closestool, which comprises the heating device according to any one of the above exemplary embodiments.

[0131] Specifically, the closestool of an embodiment of the present application comprises the heating device according to any one of the above exemplary embodiments, thus having the structural features and advantages of the heating device according to any one of the above exemplary embodiments. Details are not described herein.

[0132] It can be understood that the application field of the heating device of an embodiment of the present application is not limited to closestools, but can also be applied to other devices requiring hot water.

[0133] In the description in the present application, it needs to be explained that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the structure indicated has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0134] In the description of the embodiments of the present application, 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, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0135] Although the embodiments disclosed in the present application are as above, the content described is only the embodiments adopted for the convenience of understanding the present application, and is not intended to limit the present application. Any person skilled in the art without departing from the spirit and scope of the present application can make any modification and change in the form and details, but the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A heating device, characterized in that, The heating device comprises: a shell provided with a heating cavity, the heating cavity being provided with a first water inlet; a flow guide arranged in the heating cavity and cooperated with the shell to form a heating space; and a heating element comprising a heating rod arranged in the heating space, the heating rod having a first gap with the shell and a second gap with the flow guide, the first gap and the second gap forming a heating flow channel of the heating device, the heating flow channel being communicated with the first water inlet; a cavity wall surface of the heating cavity comprises a first wall surface which is adapted to an outer side wall of the heating rod and forms an outer contour of the first gap, and an outer wall surface of the flow guide comprises a second wall surface which is adapted to the outer side wall of the heating rod and forms an outer contour of the second gap, so that an outer contour of the heating flow channel is adapted to at least a part of the outer side wall of the heating rod. The heating rod has a circular cross section perpendicular to a length extension direction of the heating rod, and the first wall surface and the second wall surface are circular arc surfaces; 2. The heating device of claim 1, wherein an axis of the first wall surface and the second wall surface is coincident with an axis of the heating rod. The heating device further comprises at least one first partition rib extending along the length extension direction of the heating rod, the first partition rib dividing the heating flow channel into at least two sub-heating flow channels extending along the length extension direction of the heating rod; 3. The heating device of claim 1, wherein, the sub-heating flow channels are sequentially communicated. The heating flow channel has a U-shaped extension direction; or the heating flow channel has a serpentine extension direction.

4. The heating device of claim 1, wherein The heating device further comprises a helical second partition rib wound around the outer side wall of the heating rod and cooperated with the heating rod, the shell and the flow guide to form a helical flow channel.

5. The heating device of claim 1, wherein, 6. The heating device according to any one of claims 1 to 5, wherein the flow guide is provided with a clamping portion, and a cavity wall of the heating cavity is provided with a clamping matching portion, the clamping portion and the clamping matching portion being clamped to fix the flow guide to the shell. The heating element has a bent extension structure, the heating element has an avoiding space, a bottom contour of the flow guide is smaller than the avoiding space, and an upper contour of the flow guide is larger than the avoiding space, so that the flow guide can be inserted into the avoiding space from top to bottom and supported by the heating element.

7. The heating device according to any one of claims 1 to 5, characterized in that The heating cavity has a first opening, the heating device further comprises a mounting seat connected to the shell and covering the first opening, and the heating element is supported by the mounting seat.

8. The heating device according to any one of claims 1 to 5, characterized in that The shell is further provided with a mixing cavity communicated with the heating flow channel, the mixing cavity being provided with a first water outlet; 9. The heating device of claim 8, wherein, the mixing cavity is provided with a second opening, and the mounting seat covers the second opening when connected to the shell. The heating device according to any one of claims 1 to 9.

10. A toilet characterized by ​

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