Water heating device

Abstract

The utility model discloses a water heating device which comprises an inner container, a water heating device and a water heating device. The inner container comprises a cylinder body, a first end cover and a second end cover, and the first end cover and the second end cover are arranged at two ends of the cylinder body. The shell is arranged on the periphery of the inner container; the heat preservation structure comprises a first heat preservation part, a second heat preservation part and a third heat preservation part, the first heat preservation part is arranged between the first end cover and the shell, the second heat preservation part is arranged between the second end cover and the shell, and a cavity used for being filled with a heat preservation agent is formed among the first heat preservation part, the second heat preservation part, the inner surface of the shell and the outer surface of the cylinder body; the inner surface, facing the second end cover, of the second heat preservation part is provided with a runner communicated with the cavity, and the third heat preservation part is formed by the cavity and a heat preservation agent filled in the runner. On the premise that the size is not increased, the overall heat preservation performance is improved, the energy efficiency is improved, and meanwhile the cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water heater device. Background Art

[0002] Existing water heaters mainly include: gas water heaters, solar water heaters, electric water heaters and heat pump water heaters, etc. Among them, the electric water heater is a water heater that uses electricity as energy for heating.

[0003] The existing electric water heater is generally provided with an inner tank for storing water and a heat preservation structure for keeping the inner tank warm, etc. It is difficult to find a better balance between the heat preservation performance and the space occupied by the existing heat preservation structure.

[0004] Therefore, it is necessary to provide a hot water device to solve the above problems. Utility Model Content

[0005] In view of the defects existing in the prior art, a water heating device is provided in the embodiment of the utility model, which can improve the overall thermal insulation performance and energy efficiency without increasing the volume of the water heating device, and can also reduce costs.

[0006] The specific technical solution of the implementation mode of the utility model is:

[0007] A hot water device comprises: an inner tank, the inner tank comprising a cylinder and a first end cover and a second end cover arranged at both ends of the cylinder; an outer shell, the outer shell being arranged on the periphery of the inner tank; a thermal insulation structure, the thermal insulation structure comprising a first thermal insulation component, a second thermal insulation component and a third thermal insulation component, the first thermal insulation component being arranged between the first end cover and the outer shell, the second thermal insulation component being arranged between the second end cover and the outer shell, a cavity for filling with a thermal insulation agent is formed between the first thermal insulation component, the second thermal insulation component, the inner surface of the outer shell and the outer surface of the cylinder; the second thermal insulation component is provided with a flow channel connected to the cavity on the inner surface facing the second end cover, and the third thermal insulation component is formed by the cavity and the thermal insulation agent filled in the flow channel.

[0008] In a preferred embodiment, the heat preservation performance of the heat preservation agent filled in the cavity and the flow channel is better than the heat preservation performance of the second heat preservation component.

[0009] In a preferred embodiment, the first end cover and the second end cover protrude in a direction away from the cylinder; and the first end cover is used for mounting functional components.

[0010] In a preferred embodiment, the thermal insulation agent includes a thermal insulation bubble, and the flow channel is a bubble flow channel. When the thermal insulation bubble is injected into the cavity, the thermal insulation bubble can flow along the bubble flow channel.

[0011] In a preferred embodiment, a foam-filled space is provided on the outer surface of the second thermal insulation component facing the outer shell, and the foam flow channel is connected to the foam-filled space; the thermal insulation foam can flow along the foam flow channel to the foam-filled space.

[0012] In a preferred embodiment, the second end cover is provided with an opening, and the opening is used for allowing an enameling device to extend into the inner liner to perform enameling treatment on the inner surface of the inner liner during the manufacturing process of the inner liner; and a blocking member is provided on the opening.

[0013] In a preferred embodiment, a limiting portion for cooperating with the blocking member is further provided on the inner surface of the second heat-insulating member.

[0014] In a preferred embodiment, the bubble flow channel has a starting end located at the outer edge of the second thermal insulation component and capable of communicating with the cavity, and an ending end close to the limiting portion, and a connecting hole connected to the ending end is provided on the second thermal insulation component, and the connecting hole is spaced a predetermined distance from the limiting portion; the bubble flow channel is connected to the bubble filling space through the connecting hole.

[0015] In a preferred embodiment, a through hole is opened in the middle of the second thermal insulation component, and the bubble flow channel has a starting end located at the outer edge of the second thermal insulation component and capable of communicating with the cavity, and an ending end connected to the through hole, and the bubble flow channel is connected to the bubble filling space through the through hole.

[0016] In a preferred embodiment, the diameter of the through hole is larger than the maximum diameter of the blocking member.

[0017] In a preferred embodiment, there are multiple flow channels, and the multiple flow channels are distributed at intervals along the circumference of the second heat insulation component.

[0018] In a preferred embodiment, the first thermal insulation member and the second thermal insulation member are expandable polystyrene thermal insulation members.

[0019] In a preferred embodiment, the functional component includes any one of the following or a combination thereof: an electric heating element, an electronic anode, a physical anode, a temperature detection element, and a high temperature protection element.

[0020] The technical solution of the utility model has the following significant beneficial effects:

[0021] The hot water device provided in the embodiment of the present application includes components such as an inner tank, an outer shell, and an insulation structure, wherein the insulation structure includes a first insulation component, a second insulation component, and a third insulation component, wherein the first insulation component is arranged between the first end cover and the outer shell, and the second insulation component is arranged between the second end cover and the outer shell, and a cavity for filling the insulation agent is formed between the first insulation component, the second insulation component, the inner surface of the outer shell, and the outer surface of the cylinder. In order to improve the insulation performance of the whole machine without increasing the volume of the whole machine, the structure is improved on the second insulation component. Specifically, a flow channel connected to the above-mentioned cavity is provided on at least the second end cover, and the insulation agent can be made to flow into the flow channel when the insulation agent is filled into the cavity, so that at least the flow channel of the second insulation component is filled with an insulation agent with better insulation performance. When the insulation agent is solidified on the second insulation component, the insulation agent can be used to improve the insulation performance of the whole machine without increasing the volume of the whole machine. In addition, due to the existence of the flow channel, the material used for the second thermal insulation component is reduced, thereby reducing the manufacturing cost of the entire thermal insulation structure.

[0022] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0024] Figure 1 A schematic diagram of the structure of a water heater provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Sectional view at AA;

[0026] Figure 3 This is a schematic structural diagram of a second thermal insulation component provided in an embodiment of the present application;

[0027] Figure 4 A front view of a second thermal insulation component provided in an embodiment of the present application;

[0028] Figure 5 A bottom view of a second thermal insulation component provided in an embodiment of the present application;

[0029] Figure 6 for Figure 4 Sectional view at the middle BB;

[0030] Figure 7 This is a schematic structural diagram of another second thermal insulation component provided in an embodiment of the present application;

[0031] Figure 8 A front view of another second thermal insulation component provided in an embodiment of the present application;

[0032] Fig. 9 A right side view of another second thermal insulation component provided in an embodiment of the present application;

[0033] Fig.10 for Fig. 9 Sectional view at CC;

[0034] Fig.11 This is a schematic structural diagram of another second thermal insulation component provided in an embodiment of the present application;

[0035] Fig.12 A front view of another second thermal insulation component provided in an embodiment of the present application;

[0036] Fig.13 A left side view of another second thermal insulation component provided in an embodiment of the present application;

[0037] Fig.14 for Fig.13 Sectional view at DD in the middle;

[0038] Fig.15 A schematic diagram of the structure of a water heater tank provided in an embodiment of the present application;

[0039] Fig.16 for Fig.15 Sectional view at EE;

[0040] Fig.17 for Fig.15 Right view in.

[0041] Description of the accompanying drawings in this application:

[0042] 100, liner;

[0043] 10. Cylinder;

[0044] 11. First end cover;

[0045] 12. Second end cover;

[0046] 13. Blocking parts;

[0047] 200, housing;

[0048] 21. a first electric heating element;

[0049] 22. a second electric heating element;

[0050] 23. Electronic anode;

[0051] 24. Physical anode;

[0052] 25. Temperature detection parts;

[0053] 26. High temperature protection element;

[0054] 27. Water inlet assembly;

[0055] 28. Water outlet assembly;

[0056] 31. A first thermal insulation member;

[0057] 32. A second thermal insulation member;

[0058] 321, bubble flow channel;

[0059] 322. The foam fills the space;

[0060] 323, limiter;

[0061] 324, communicating hole;

[0062] 325, through hole;

[0063] 330. Cavity. DETAILED DESCRIPTION

[0064] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0065] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0067] The utility model provides a water heater, which can improve the overall heat preservation performance and energy efficiency without increasing the volume of the water heater, and can also reduce costs.

[0068] Please refer to Figures 1 to 17 In the embodiment of the specification of the present application, a hot water device is provided, including: an inner tank 100, the inner tank 100 includes a cylinder 10 and a first end cover 11 and a second end cover 12 arranged at both ends of the cylinder 10; an outer shell 200, the outer shell 200 is arranged on the periphery of the inner tank 100; an insulation structure, the insulation structure includes a first insulation member 31, a second insulation member 32 and a third insulation member (not shown in the figure), the first insulation member 31 is arranged between the first end cover 11 and the outer shell 200, the second insulation member 32 is arranged between the second end cover 12 and the outer shell 200, and a cavity 330 for filling an insulation agent is formed between the first insulation member 31, the second insulation member 32, the inner surface of the outer shell 200 and the outer surface of the cylinder 10; the second insulation member 32 is provided with a flow channel connected to the cavity 330 on the inner surface facing the second end cover 12, and the third insulation member is formed by the cavity 330 and the insulation agent filled in the flow channel.

[0069] In the embodiment of the present application, the water heater may include components such as an inner tank 100, an outer shell 200, and a heat preservation structure.

[0070] Please refer to Figure 1 , Figure 2 , Fig.15 , Fig.16The body of the water heater inner tank 100 can be made of low-cost low-carbon steel or other materials. An enamel coating is provided on the inner surface of the inner tank 100, and the enamel coating can be formed by the spraying treatment. The enamel coating can protect the inner tank 100 and prevent the low-carbon steel from directly contacting the water in the inner tank 100 and corroding.

[0071] The water heater inner tank 100 may be a horizontal inner tank with its axis approximately parallel to the horizontal plane, or a vertical inner tank with its axis approximately parallel to the gravity direction. In the embodiments of the present application, the description is mainly based on the horizontal inner tank.

[0072] The liner 100 includes a cylinder 10 and a first end cap 11 and a second end cap 12 located at both ends of the cylinder 10. The two end caps may both protrude in a direction away from the cylinder 10, for example, the first end cap 11 is protruded in a direction away from the cylinder 10. The second end cap 12 may also protrude in a direction away from the cylinder 10. Of course, one of the end caps may protrude in a direction away from the cylinder 10, and the other end cap may be recessed toward the inside of the cylinder 10.

[0073] When the two end covers of the inner liner 100 are both protruding in a direction away from the cylinder 10, the material utilization rate of the inner liner 100 can be effectively improved and the cost can be reduced. For the inner liner 100 with a predetermined length and cross-sectional size, it can increase the volume of the inner liner 100; or for the inner liner 100 with a predetermined volume and cross-sectional size, it can shorten the length of the inner liner 100 and has high reliability during use.

[0074] Further, when both end covers of the inner tank 100 are protruding in a direction away from the cylinder 10, the first end cover 11 is used to install the functional components of the water heater. Accordingly, at least one mounting hole for assembling the functional components is provided on the first end cover 11. The specific form, size and number of the mounting hole may vary according to the different functional components installed.

[0075] In this embodiment, the outer shell 200 is disposed around the inner liner 100, and the outer shell 200 is used to be sleeved around the outer shell 100. Generally, the outer shell 200 is a relatively regular shell structure, and its parts close to the two ends of the inner liner 100 are planar structures.

[0076] A certain gap is formed between the outer shell 200 and the inner liner 100. A heat preservation structure is also provided in the gap between the inner liner 100 and the outer shell 200. Specifically, the heat preservation structure may include: a first heat preservation member 31, a second heat preservation member 32 and a third heat preservation member. The first heat preservation member 31 is provided between the first end cover 11 and the outer shell 200. The second heat preservation member 32 is provided between the second end cover 12 and the outer shell 200.

[0077] The first heat-insulating member 31 and the second heat-insulating member 32 are located at the ends of the inner liner 100. The first heat-insulating member 31 can be an annular cover structure as a whole, which has an inner surface facing the first end cover 11 of the inner liner 100 and an outer surface facing the outer shell 200. The inner surface of the first heat-insulating member 31 as a whole matches the end surface structure of the first end cover 11 of the inner liner 100. The second heat-insulating member 32 can be an annular cover structure as a whole, which has an inner surface facing the second end cover 12 of the inner liner 100 and an outer surface facing the outer shell 200. The inner surface of the second heat-insulating member 32 as a whole matches the end surface structure of the second end cover 12 of the inner liner 100.

[0078] Specifically, the first thermal insulation member 31 and the second thermal insulation member 32 can be an expandable polystyrene thermal insulation member (EPS for short). When the first thermal insulation member 31 and the second thermal insulation member 32 are made of EPS material, they can be pre-made by a mold. The first thermal insulation member 31 and the second thermal insulation member 32 made by using the EPS have thermal insulation and heat insulation properties, and also have cushioning and shock resistance, and can provide protection for the liner 100 and the functional components installed on the liner 100 during operation and installation. Of course, the first thermal insulation member 31 and the second thermal insulation member 32 can also be made of other materials with thermal insulation and shock resistance, which is not limited to the above description. The technical personnel in the relevant field may make other changes under the inspiration of the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of the present application, they should be covered within the protection scope of the present application.

[0079] In this embodiment, a cavity 330 for filling a heat-insulating agent is formed between the first heat-insulating member 31, the second heat-insulating member 32, the inner surface of the shell 200 and the outer surface of the cylinder 10, and a flow channel connected to the cavity 330 is provided on the inner surface of the second heat-insulating member 32 facing the second end cover 12. Specifically, there are multiple flow channels, and the multiple flow channels are distributed at intervals along the circumference of the second heat-insulating member 32. For example, Figures 3 to 6 As shown, the number of the flow channels may be two, and the two flow channels are distributed on the inner surface of the second heat-insulating member 32 at an interval of 180°; or, as shown Figures 7 to 14As shown, the number of the flow channels may be 6, and the 6 flow channels are distributed on the inner surface of the second thermal insulation component 32 at intervals of 60°, or the number of the flow channels may be more or less, and the present application does not give examples one by one here.

[0080] The third thermal insulation component can be formed by filling the cavity 330 and the flow channel with a thermal insulation agent. The thermal insulation performance of the thermal insulation agent is better than the thermal insulation performance of the second thermal insulation component 32. In particular, for the inner liner 100 in which the second end cover 12 protrudes in a direction away from the cylinder 10, since the second end cover 12 protrudes outward, the distance between the center of the second end cover 12 and the end face of the shell is small, and the thickness of the second thermal insulation component 32 in this area is small, so the thermal insulation effect is poor, which affects the thermal insulation performance of the whole machine and makes it impossible for the whole machine to achieve a more ideal energy efficiency.

[0081] In the embodiment of the present application, in order to improve the thermal insulation performance of the whole machine without increasing the volume of the whole machine, the second thermal insulation component 32 is structurally improved. A flow channel connected to the above-mentioned cavity 330 is provided on at least the second end cover 12. By utilizing the flow channel, when filling the cavity 330 with the thermal insulation agent, the thermal insulation agent can flow into the flow channel, so that at least the flow channel of the second thermal insulation component 32 is filled with the thermal insulation agent with better thermal insulation performance. When the thermal insulation agent is solidified on the second thermal insulation component 32, the thermal insulation agent can be used to improve the thermal insulation performance of the whole machine without increasing the volume of the whole machine. In addition, due to the existence of the flow channel, the material used in the second thermal insulation component 32 is reduced, which can reduce the manufacturing cost of the entire thermal insulation structure.

[0082] Specifically, the heat preservation agent may include a heat preservation foam, and the flow channel may be a foam flow channel 321. When the heat preservation foam is injected into the cavity 330, the heat preservation foam can flow along the foam flow channel 321, that is, the foam flow channel 321 can be filled with a heat preservation agent with better heat preservation performance. After the heat preservation agent is solidified in the foam flow channel 321, since the heat preservation machine has better heat preservation performance and lower material cost, it can improve the heat preservation performance of the heat preservation structure while reducing its production cost.

[0083] Furthermore, a foam filling space 322 is provided on the outer surface of the second thermal insulation component 32 facing the outer shell 200 , and the foam flow channel 321 is connected to the foam filling space 322 ; the thermal insulation foam can flow along the foam flow channel 321 to the foam filling space 322 .

[0084] In this embodiment, the outer surface of the second heat-insulating member 32 facing the housing 200 is provided with a foam-filled space 322. Specifically, the foam-filled space 322 may be a groove with a certain depth formed on the outer surface of the second heat-insulating member 32. The groove may be circular as a whole. Of course, the specific shape, structure, and size of the foam-filled space 322 are not specifically limited in this application.

[0085] When the second thermal insulation component 32 is provided with a foam filling space 322 on the outer surface facing the outer shell 200, since the foam filling space 322 is connected with the foam flow channel 321, when the thermal insulation agent (for example, thermal insulation foam) is filled into the cavity 330, the thermal insulation foam can flow along the foam flow channel 321 to the foam filling space 322, which can further increase the proportion of the thermal insulation foam in the second thermal insulation component 32, thereby further improving the thermal insulation performance of the thermal insulation structure and reducing the manufacturing cost.

[0086] like Figure 2 As shown, in some embodiments, the second end cover 12 is provided with an opening with a predetermined aperture, and the opening is used to allow an enameling device to extend into the inner liner 100 during the manufacturing process of the inner liner 100 to perform enameling treatment on the inner surface of the inner liner 100, and a sealing member 13 is provided on the opening.

[0087] The opening can be located at the center of the second end cover 12, or at a non-center position of the second end cover 12. When the opening is located at the center of the second end cover 12, after the enameling equipment is inserted through the center, the enameling equipment and the inner liner 100 rotate relative to each other in a circumferential direction. For example, the inner liner 100 does not move, and the enameling equipment rotates in a circumferential direction, so that the interior of the inner liner 100 can be evenly enameled. In addition, when the opening is located at the center of the second end cover 12, the sealing member 13 fixedly connected to the opening is also located at the center of the second end cover 12. The fixed connection method can be welding, or other connection methods. In the embodiments of the present application, the fixed connection method is mainly illustrated by welding.

[0088] When the plugging piece 13 is welded at the opening position after the spraying is completed, a supporting force can be applied to the inner liner 100 at the center of the two end covers of the inner liner 100 along the axial direction of the inner liner 100, and the inner liner 100 is made to rotate circumferentially with the axis as the rotation axis, so as to achieve circumferential uniform welding of the plugging piece 13 and the inner liner 100. Specifically, the aperture of the opening is between 60 mm and 90 mm. In order to smoothly extend the spraying equipment into the inner liner 100 through the opening, the aperture of the opening needs to be set to at least 60 mm; when the aperture of the opening is appropriately enlarged on the basis of 60 mm, the aperture of the opening can be appropriately increased without affecting the strength of the entire second end cover 12, the welding reliability and the premise of not increasing the welding workload too much, so that after the spraying equipment is extended into the inner liner 100 through the opening, there is still a certain adjustment margin.

[0089] The plugging member 13 may be a cover body structure matching the opening. Specifically, the plugging member 13 is a cover body protruding toward the inside of the water heater tank 100, and the surface of the cover body facing the inside of the tank 100 has an enamel coating. Since the tank 100 is a pressure-bearing structure, the plugging member 13 disposed on the opening of the tank 100 is also a pressure-bearing structure, and the thickness of the plugging member 13 needs to meet certain strength requirements. Specifically, the thickness of the plugging member 13 may be at least 2 mm.

[0090] Theoretically, the thickness of the plugging member 13 is proportional to the volume of the inner liner 100, and the thickness of the plugging member 13 is proportional to the diameter of the plugging member 13. The larger the volume of the inner liner 100 (mainly the larger the diameter of the inner liner 100), the greater the deformation near the plugging member 13, the higher the strength requirement for the plugging member 13, and the thicker the wall of the plugging member 13; the larger the diameter of the plugging member 13, the weaker the strength, and the thicker the wall required.

[0091] Please refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 or Figure 7 , Figure 8 , Fig. 9 and Fig.10 In some embodiments, a limiting portion 323 for cooperating with the blocking member 13 is further provided on the inner surface of the second thermal insulation member 32 .

[0092] In this embodiment, the limiting portion 323 is mainly used to cooperate with the blocking member 13. When the blocking member 13 cooperates with the limiting portion 323, it indicates that the second thermal insulation member 32 and the inner liner 100 are installed in place. For example, the center of the inner liner 100 is aligned with the center of the second thermal insulation member 32. Specifically, the second thermal insulation member 32 can be an annular cover structure as a whole, which has an inner surface facing the second end cover 12 of the inner liner 100 and an outer surface facing the outer shell 200. Among them, the inner surface of the second thermal insulation member 32 as a whole matches the end surface structure of the second end cover 12 of the inner liner 100. When the second end cover 12 of the inner liner 100 bulges in the direction away from the cylinder 10, the inner surface of the second thermal insulation member 32 is concavely configured accordingly.

[0093] Specifically, the limiting portion 323 can be a groove located at the center of the inner surface of the second heat-insulating member 32, and the end of the blocking member 13 has an annular edge protruding from the second end surface, and the edge can be inserted into the groove. Of course, the specific structure of the limiting portion 323 is not limited to the above example, and it can also be other deformed structures.

[0094] In a specific embodiment, the bubble flow channel 321 has a starting end located at the outer edge of the second thermal insulation component 32 and capable of communicating with the cavity 330, and an ending end close to the limiting portion 323. A connecting hole 324 connected to the ending end is provided on the second thermal insulation component 32, and the connecting hole 324 is spaced a predetermined distance from the limiting portion 323; the bubble flow channel 321 is connected to the bubble filling space 322 through the connecting hole 324.

[0095] In this embodiment, a connecting hole 324 connecting the inner surface and the outer surface of the second thermal insulation member 32 may be provided at a predetermined distance from the limiting portion 323. Specifically, the number of the connecting holes 324 may be the same as the number of the bubble flow channels 321. The connecting holes 324 are used to connect the bubble flow channels 321. When the thermal insulation agent (e.g., the thermal insulation bubble) is filled into the cavity 330, the thermal insulation bubble may flow into the bubble filling space 322 along the bubble flow channels 321 through the connecting holes 324.

[0096] Please refer to Fig.11 , Fig.12 , Fig.13 and Fig.14 In another specific embodiment, a through hole 325 is opened in the middle of the second thermal insulation component 32, and the bubble flow channel 321 has a starting end located at the outer edge of the second thermal insulation component 32 and capable of communicating with the cavity 330 and an ending end connected to the through hole 325, and the bubble flow channel 321 is connected with the bubble filling space 322 through the through hole 325.

[0097] In this embodiment, a through hole 325 is provided in the middle of the second thermal insulation member 32, and the bubble flow channel 321 can be specifically a plurality of grooves with a certain depth provided on the inner surface of the second thermal insulation member 32. Taking one of the grooves as an example, its starting end is located at the outer edge of the second thermal insulation member 32, and its terminal end is connected to the through hole 325. The outer surface of the second thermal insulation member 32 is provided with a bubble filling space 322 connected to the through hole 325, and when the thermal insulation agent (for example, the thermal insulation bubble) is filled into the cavity 330, the thermal insulation bubble can flow into the bubble filling space 322 along the bubble flow channel 321 through the connecting hole 324.

[0098] Further, the aperture of the through hole 325 is larger than the maximum diameter of the blocking member 13. When the aperture of the through hole 325 is larger than the maximum diameter of the blocking member 13, the portion of the blocking member 13 protruding from the second end cover 12 may be located in the through hole 325. When the cavity 330 is filled with a heat-insulating foam, the heat-insulating foam may flow into the foam filling space 322 through the gap between the blocking member 13 and the through hole 325, and fill the gap between the blocking member 13 and the through hole 325, as well as the foam flow channel 321 connected to both the through hole 325 and the gap.

[0099] Please refer to Fig.15 , Fig.16 and Fig.17 In an embodiment of the present application, the functional components installed on the mounting hole of the first end cover 11 may include any one of the following or a combination thereof: an electric heating element, an electronic anode 23, a physical anode 24, a temperature detection element 25, and a high temperature protection element 26.

[0100] In some embodiments, the functional component may include an electric heating element, and the electric heating element is installed at the installation hole.

[0101] The electric heating element is a component that converts electrical energy into thermal energy. The electric heating element contacts the water in the inner pot 100, and after the heat energy generated by the electric heating element is transferred to the water in the inner pot 100, the water in the inner pot 100 can be heated. One end of the electric heating element is fixed to the first end cover 11 through a mounting hole, and the other end extends into the water in the inner pot 100.

[0102] The water heater is provided with a controller. Specifically, the controller can be in the form of a main control board, which can be integrated on the box of the water heater. Of course, the specific form and setting position of the controller are not limited to the above examples, and those skilled in the art can make adaptive adjustments according to actual design requirements. The electric heating element is electrically connected to the controller. When an unexpected situation occurs, the controller can control the electric heating element to stop working after receiving an electrical signal to prevent it from dry burning.

[0103] The electric heating element can be divided into a metal electric heating element and a non-metal electric heating element according to its material. The material of the metal electric heating element may be: nickel-chromium wire (Ni-Cr), iron-chromium-aluminum wire (Fe-Cr-Al), nickel-iron wire (Ni-Fe), nickel-copper wire (Ni-Cu), etc. The non-metal electric heating element may be: silicon carbide, silicon-molybdenum rod, PTC electric heating element, electric heating paint, etc. The specific material of the electric heating element is not limited in this application. For example, the electric heating element may be a metal heating rod or a tubular electric heating tube. The metal electric heating tube is a sealed electric heating element that is widely used, simple in structure, reliable in performance, and has a long service life among all current electric heating elements.

[0104] In addition, the number of the electric heating elements may be one or more.

[0105] In one embodiment, the electric heating element comprises: a first electric heating element 21 and a second electric heating element 22 , and the first electric heating element 21 and the second electric heating element 22 are staggered.

[0106] When there are multiple electric heating elements, the present application takes two as an example for illustration.

[0107] like Fig.16 As shown, when the inner tank 100 is a horizontal inner tank 100, the two electric heating elements can be staggered and distributed along the gravity direction, and multiple electric heating elements are electrically connected to the controller. The controller can control the positions and numbers of the electric heating elements to be turned on, so as to meet different water outlet requirements of the water heater. For example, when the first electric heating element 21 and the second electric heating element 22 are turned on at the same time, the rapid heating requirement can be met; when the water temperature in the inner tank 100 is close to the preset water outlet temperature set by the user, only one of the electric heating elements can be controlled to work; when the water temperature in the inner tank 100 has reached the preset water outlet temperature set by the user, but the user currently has no water demand, one of the electric heating elements can be controlled to heat intermittently to maintain the water temperature in the inner tank 100 above a certain temperature.

[0108] When the electric heating element includes a first electric heating element 21 and a second electric heating element 22, the mounting hole includes a first mounting hole for mounting the first electric heating element 21 and a second mounting hole for mounting the second electric heating element 22. The specific positions of the first mounting hole and the second mounting hole can be comprehensively determined according to the spacing distance that the electric heating elements need to meet in space, etc., and the present application does not make specific limitations here.

[0109] In some embodiments, the functional component may further include an electronic anode 23. When the functional component includes the electronic anode 23, the mounting hole further includes a third mounting hole for mounting the electronic anode 23, and the electronic anode 23 is mounted on the first end cover 11 through the third mounting hole and extends into the water heater inner tank 100. Taking the inner tank 100 as a horizontal inner tank as an example, the position of the electronic anode 23 in the water heater inner tank 100 is higher than the electric heating element along the gravity direction.

[0110] The electronic anode 23 can be in the shape of a tube or other shapes as a whole, with one end fixed on the first end cover 11 and the other end extending into the water of the inner tank 100. The end of the electronic anode 23 fixed to the inner tank 100 is electrically connected to the controller. The position of the electronic anode 23 in the inner tank 100 is higher than the position of the electric heating element in the vertical direction. This helps to ensure that when the electronic anode 23 is exposed to the water surface, the electric heating element is at least not completely exposed to the water surface. Furthermore, the electronic anode 23 extends in the same direction or towards the electric heating element. When the electronic anode 23 extends in the same direction or towards the electric heating element, it is helpful to control the height difference between the electronic anode 23 and the electric heating element, and ensure the reliability of the installation process and the working process of the electric water heater.

[0111] The electronic anode 23 can be used to prevent corrosion of the inner container 100. Based on existing experiments and theories, the electronic anode 23 has a longer service life than the existing physical anode 24, such as a magnesium rod, and has a better anti-corrosion effect.

[0112] The electronic anode 23 can not only be used to prevent the inner pot 100 from corrosion, but also be used to detect the change of the water level in the inner pot 100, which is equivalent to having the function of a liquid level sensor. The specific principle of the electronic anode 23 being able to detect the change of the water level in the inner pot 100 is as follows:

[0113] The controller is electrically connected to the electronic anode 23. When the electronic anode 23 is working, if the electronic anode 23 contacts the water in the inner tank 100, it will continue to undergo electrochemical reactions to form a current loop, and a certain voltage will be formed on the electronic anode 23 accordingly, so that it can be detected by the controller; if the electronic anode 23 is separated from the water surface, the voltage immediately fed back to the controller by the electronic anode 23 will have a sudden change from high to low or even from existence to non-existence, or in other words, the current fed back to the controller by the electronic anode 23 will also have a sudden change from large to small or even from existence to non-existence. When the controller receives the voltage / current change signal when the electronic anode 23 is separated from the water surface, it sends an electrical signal to the electric heating element, which can control the electric heating element to stop working, thereby having anti-dry burning and anti-explosion functions, and high safety performance.

[0114] A liquid level sensor may also be provided in the inner tank 100 to detect water level changes, but the liquid level sensor is prone to scale on the surface during use and is prone to failure after a period of use. When the electronic anode 23 is used in the utility model to detect water level changes, since its surface is acidic and not easy to scale, it is not easy to fail due to scaling during use. In addition, the electronic anode 23 can simultaneously realize the functions of anti-corrosion and detecting water level changes, which can simplify the structure and save costs.

[0115] In some embodiments, the functional component may further include: a physical anode 24 .

[0116] The material of the physical anode 24 can be a low potential metal material, specifically magnesium, magnesium alloy, pure zinc, zinc alloy, aluminum alloy, etc. When the electric water heater is powered off, the physical anode 24 in the water can continue to undergo electrochemical reactions, thereby preventing the inner tank 100 from being corroded.

[0117] When the functional component includes a physical anode 24 , the mounting hole may further include a fourth mounting hole for mounting the physical anode 24 , and the physical anode 24 is mounted on the first end cover 11 through the fourth mounting hole and extends into the water heater inner tank 100 .

[0118] In some embodiments, the functional component may further include: a high temperature protection element 26. The high temperature protection element 26 may be used to control the on-off relationship of the circuit between the power line and the controller. When the temperature in the inner tank 100 exceeds the preset safety temperature, the high temperature protection element 26 may cut off the circuit between the power line and the main control board, which is equivalent to stopping the power supply to the water heater. The specific value of the preset safety temperature may vary depending on the detection position, detection principle, etc. inside the water heater, and the present application does not make any specific limitation here.

[0119] In addition, for the water heater, a water inlet assembly 27 for supplying water from an external source into the inner tank 100 and a water outlet assembly 28 for outputting the heated water in the inner tank 100 are also installed on the cylinder 10 .

[0120] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0121] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0122] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A water heating device, characterized in that: include: An inner liner, the inner liner comprising a cylinder and a first end cover and a second end cover arranged at two ends of the cylinder; An outer shell, the outer shell being arranged on the periphery of the inner liner; A heat-insulating structure, the heat-insulating structure comprising a first heat-insulating member, a second heat-insulating member and a third heat-insulating member, the first heat-insulating member being arranged between the first end cover and the shell, the second heat-insulating member being arranged between the second end cover and the shell, and a cavity for filling a heat-insulating agent is formed between the first heat-insulating member, the second heat-insulating member, the inner surface of the shell and the outer surface of the cylinder; The second heat-insulating component is provided with a flow channel communicating with the cavity on the inner surface facing the second end cover, and the third heat-insulating component is formed by the cavity and the heat-insulating agent filled in the flow channel.

2. The water heater according to claim 1, characterized in that: The heat preservation performance of the heat preservation agent filled in the cavity and the flow channel is better than the heat preservation performance of the second heat preservation component.

3. The water heater according to claim 1, characterized in that: The first end cover and the second end cover protrude in a direction away from the cylinder; the first end cover is used for installing functional components.

4. The water heater according to claim 3, characterized in that: The heat-insulating agent comprises a heat-insulating bubble, and the flow channel is a bubble flow channel. When the heat-insulating bubble is injected into the cavity, the heat-insulating bubble can flow along the bubble flow channel.

5. The water heater according to claim 4, characterized in that: The outer surface of the second heat-insulating component facing the shell is provided with a bubble-filling space, and the bubble flow channel is connected with the bubble-filling space; the heat-insulating bubble can flow along the bubble flow channel to the bubble-filling space.

6. The water heater according to claim 5, characterized in that: The second end cover is provided with an opening, and the opening is used for allowing an enameling device to extend into the inner liner to perform enameling treatment on the inner surface of the inner liner during the manufacturing process of the inner liner; and a blocking member is provided on the opening.

7. The water heater according to claim 6, characterized in that: A limiting portion for cooperating with the blocking member is also provided on the inner surface of the second heat-insulating member.

8. The water heater according to claim 7, characterized in that: The bubble flow channel has a starting end located at the outer edge of the second thermal insulation component and capable of communicating with the cavity, and an ending end close to the limiting portion. A connecting hole connected to the ending end is provided on the second thermal insulation component, and the connecting hole is spaced a predetermined distance from the limiting portion; the bubble flow channel is connected to the bubble filling space through the connecting hole.

9. The water heater according to claim 6, characterized in that: A through hole is opened in the middle of the second thermal insulation component, and the bubble flow channel has a starting end located at the outer edge of the second thermal insulation component and capable of communicating with the cavity and a terminal end connected to the through hole, and the bubble flow channel is connected to the bubble filling space through the through hole.

10. The water heater according to claim 9, characterized in that: The diameter of the through hole is greater than the maximum diameter of the blocking member.

11. The water heater according to claim 1, characterized in that: There are a plurality of flow channels, and the plurality of flow channels are distributed at intervals along the circumference of the second heat-insulating component.

12. The water heater according to claim 1, characterized in that: The first heat-insulating component and the second heat-insulating component are expandable polystyrene heat-insulating components.

13. The water heater according to claim 3, characterized in that: The functional components include any one of the following or a combination thereof: an electric heating element, an electronic anode, a physical anode, a temperature detection element, and a high temperature protection element.

Images