Foaming end cover assembly and water heater

Abstract

The present application relates to the field of water heaters, and provides a foaming end cover assembly and a water heater. The foaming end cover assembly comprises an end cover, a foam blocking member, and a pressure bearing member; the end cover covers an opening of one end of an outer housing of the water heater; the foam blocking member is annularly arranged and is arranged between an inner container and the end cover; the side of the foam blocking member distant from the end cover abuts against the inner container; a foaming cavity is formed in and passes through the foam blocking member in the axial direction; and the pressure bearing member is arranged between the end cover and the foam blocking member, fits with the side of the foam blocking member facing away from the inner container, and matches the inner container to block the foaming cavity. According to the present application, the pressure borne by the end cover can be remarkably reduced, and it is ensured that when a foaming material enters the foaming cavity, the end cover will not deform due to pressing, thereby improving the aesthetics.

Description

Foaming end cover assembly and water heater

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202323172665.4, filed on November 23, 2023, entitled “Foaming end cover assembly and water heater,” which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the technical field of water heaters, and in particular to a foaming end cover assembly and a water heater. Background Art

[0004] An electric water heater typically consists of a shell with two open ends, an inner tank installed within the shell and having an opening at one end, and an end cap that seals the shell's opening away from the opening. To insulate the inner tank, a bubble blocker is typically placed between the end cap and the inner tank. Existing bubble blocks are typically made of EPS (expandable polystyrene), a material with a low density and a large volume. One opposing side of the blocker contacts the inner tank, while the other side contacts the inner wall of the shell.

[0005] However, due to the high thermal conductivity and poor insulation performance of EPS foam, the volume of the left bubble is currently large, resulting in poor overall insulation effect in the left end area. After reducing the volume of the left bubble, the left end cover may be squeezed and deformed by the foaming expansion force.

[0006] Summary of the Invention

[0007] This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes a foaming end cap assembly that can significantly reduce the pressure on the end cap, ensure that the end cap will not be squeezed and deformed after the foaming material enters the foaming cavity, and improve the aesthetics.

[0008] The application also provides a water heater.

[0009] The foaming end cap assembly proposed in this application includes:

[0010] an end cover, the end cover being fitted over a port at one end of the outer shell of the water heater;

[0011] A bubble blocking member is annularly arranged and disposed between the inner liner and the end cover, wherein a side of the bubble blocking member away from the end cover abuts against the inner liner, and a foaming cavity is axially penetrated by the bubble blocking member;

[0012] A pressure-bearing member is provided between the end cover and the bubble-blocking member, and the pressure-bearing member is fitted on a side of the bubble-blocking member away from the inner liner, cooperating with the inner liner to block the foaming cavity.

[0013] In some embodiments, the bubble blocking member is provided with a plurality of connecting sleeves along its circumference, and the pressure-bearing member is provided with a plurality of plug-in columns connected to the connecting sleeves on a side close to the bubble blocking member.

[0014] In some embodiments, the connecting sleeve is extended along the axial direction.

[0015] In some embodiments, the connecting sleeve has an inserting portion and an abutting portion, and the inserting portion and the abutting portion are respectively provided at two ends of the connecting sleeve along the axial direction.

[0016] In some embodiments, the plug-in portion is arranged close to the pressure-bearing member.

[0017] In some embodiments, a plug-in slot is provided on the plug-in portion, and the plug-in slot is plugged into the plug-in post.

[0018] In some embodiments, the abutment portion is disposed close to the inner container, and the abutment portion has an abutment surface that is adapted to the shape of the inner container.

[0019] In some embodiments, a buffer opening is formed between two adjacent connecting sleeves, the bubble blocking member and the inner container.

[0020] In some embodiments, the buffer port is communicated with the foaming cavity.

[0021] In some embodiments, one of the end surfaces of the bubble blocking member and the pressure-bearing member that are in contact with each other is provided with a sealing protrusion, and the other is provided with a sealing groove, and the sealing protrusion abuts against the sealing groove to seal and position the bubble blocking member and the pressure-bearing member.

[0022] In some embodiments, the pressure-bearing member has a raised portion, the raised portion protrudes from the bubble-blocking member toward the end cover, and the raised portion is arranged corresponding to the foaming cavity.

[0023] In some embodiments, the curvature of the raised portion is greater than or equal to the curvature of the corresponding end surface of the liner.

[0024] In some embodiments, a plurality of pressure-bearing structures are provided on a side of the pressure-bearing member facing away from the bubble-blocking member, and the plurality of pressure-bearing structures are radially extended outward from the axis.

[0025] In some embodiments, the pressure-bearing structure includes annular ribs and radial ribs.

[0026] In some embodiments, the radial ribs are arranged in an annular array in the circumferential direction of the annular rib.

[0027] In some embodiments, the annular rib and the radial rib are arranged to intersect with each other.

[0028] In some embodiments, the bubble blocking member has an inclined annular surface on a side close to the inner container, and the inclined annular surface is inclined from the pressure-bearing member toward the inner container and gradually away from the axis.

[0029] In some embodiments, the abutment portion of the connecting sleeve protrudes from the inclined annular surface and abuts against the inner container.

[0030] The present application also proposes a water heater, which includes the above-mentioned foaming end cover assembly, and the foaming end cover assembly includes an end cover, a bubble blocking part and a pressure-bearing part, and the end cover is covered with a port at one end of the outer shell of the water heater; the bubble blocking part is arranged in an annular shape, and the bubble blocking part is arranged between the inner tank and the end cover, and the side of the bubble blocking part away from the end cover abuts against the inner tank, and the bubble blocking part is axially penetrated with a foaming cavity; the pressure-bearing part is arranged between the end cover and the bubble blocking part, and the pressure-bearing part is fitted on the side of the bubble blocking part away from the inner tank, cooperating with the inner tank to seal the foaming cavity.

[0031] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0032] The present application arranges a pressure-bearing member between the bubble-blocking member and the end cover. Through the arrangement of the pressure-bearing member, the axial pressure-bearing capacity of the foaming end cover assembly is improved, the pressure on the end cover is effectively reduced, and the problem of extrusion deformation of the end cover caused by the expansion of the foaming material is avoided, thereby maintaining the good appearance of the water heater and enhancing the stability and durability of the overall structure; at the same time, the annular arrangement of the bubble-blocking member and the axial penetration structure of the foaming cavity allow the end of the inner tank to be filled with more foaming material, thereby improving the thermal insulation performance of the inner tank.

[0033] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] FIG1 is a schematic structural diagram of an embodiment of a foaming end cap assembly provided in an embodiment of the present application;

[0036] FIG2 is a partial view of the assembly of the foaming end cap assembly and the inner liner;

[0037] FIG3 is an exploded view of the foamed end cap assembly.

[0038] Figure numerals: 10, foaming end cover assembly; 100, end cover; 200, foam blocking member; 210, foaming chamber; 220, connecting sleeve; 221, plug-in portion; 221a, plug-in groove; 222, abutting portion; 222a, abutting surface; 230, buffer port; 240, sealing slot; 250, inclined annular surface; 300, pressure-bearing member; 310, plug-in column; 320, sealing protrusion; 330, raised portion; 340, annular rib; 350, radial rib; 20, outer shell; 30, inner liner. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0042] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0044] An electric water heater typically consists of a shell with two open ends, an inner tank installed within the shell and having an opening at one end, and an end cap that seals the shell's opening away from the opening. To insulate the inner tank, a bubble blocker is typically placed between the end cap and the inner tank. Existing bubble blocks are typically made of EPS (expandable polystyrene), a material with a low density and a large volume. One opposing side of the blocker contacts the inner tank, while the other side contacts the inner wall of the shell.

[0045] However, due to the high thermal conductivity and poor insulation performance of EPS foam, the volume of the left bubble is currently large, resulting in poor overall insulation effect in the left end area. After reducing the volume of the left bubble, the left end cover may be squeezed and deformed by the foaming expansion force.

[0046] The present application provides a foaming end cover assembly and a water heater.

[0047] In the embodiment of the utility model, referring to Figures 1 to 3, the foaming end cover assembly 10 includes an end cover 100, a bubble blocking member 200 and a pressure-bearing member 300. The end cover 100 covers the port at one end of the outer shell 20 of the water heater; the bubble blocking member 200 is arranged in an annular shape, and is arranged between the inner tank 30 and the end cover 100. The side of the bubble blocking member 200 away from the end cover 100 abuts against the inner tank 30, and the bubble blocking member 200 is axially penetrated by a foaming cavity 210; the pressure-bearing member 300 is arranged between the end cover 100 and the bubble blocking member 200, and the pressure-bearing member 300 is fitted and connected to the side of the bubble blocking member 200 away from the inner tank 30, and cooperates with the inner tank 30 to seal the foaming cavity 210.

[0048] An electric water heater uses electricity as its primary energy source. When powered on, the high-temperature heat generated directly heats the water stored in the heater to produce hot water. An electric water heater typically consists of a water tank, an electric heating element, and an electronic control board. The water tank forms a water storage cavity to store the water to be heated. The electric heating element is inserted into the water storage cavity, and the electronic control board controls the heating element's operation to heat the water in the tank to a set temperature. The water tank of an electric water heater typically consists of an outer shell 20 and an inner shell 30, with an insulation layer formed between the outer shell 20 and the inner shell 30. The outer shell is typically made of plastic to meet diverse design requirements for aesthetics. The inner shell 30 can be made of either metal or plastic, depending on the needs. Common insulation materials for the insulation layer between the outer shell 20 and the inner shell 30 include asbestos, sponge, foamed plastic, and polyurethane foam. Conventional technology often uses foaming to achieve good insulation.

[0049] Specifically, in the embodiment of the present application, the foaming end cover assembly 10 includes an end cover 100, a bubble blocking member 200 and a pressure-bearing member 300. It can be understood that the end cover 100 is a component installed on the port at one end of the water heater outer shell 20, which plays the role of encapsulating and protecting the internal components to protect the interior of the water heater from the influence of the external environment and prevent the foaming material from leaking from the port. In the present application, the end cover 100 can be either the left end cover 100 or the right end cover 100, and is not specifically limited here. The bubble blocking member 200 is arranged in an annular shape and is located between the inner liner 30 and the end cover 100. The side away from the end cover 100 is connected to the inner liner 30, and a foaming cavity 210 is provided along the axial direction. The annular arrangement of the bubble blocking member 200 and the axially penetrating structure of the foaming cavity 210 allow the end of the inner liner 30 to be filled with more foaming material, thereby improving the thermal insulation performance of the inner liner 30. At the same time, the bubble blocking member 200 is also used to ensure that the foaming material does not leak from the gap between the inner liner 30 and the end cover 100, providing a channel for the injection of the foaming material. The pressure-bearing member 300 is located between the end cover 100 and the bubble blocking member 200, and is fitted and connected to the side of the bubble blocking member 200 facing away from the inner liner 30, and cooperates with the inner liner 30 to seal the foaming cavity 210. By providing the pressure-bearing member 300, the axial pressure-bearing capacity of the foaming end cover assembly 10 is improved, the pressure on the end cover 100 is effectively reduced, and the problem of extrusion deformation of the end cover 100 caused by the expansion of the foaming material is avoided. At the same time, the good appearance of the water heater is maintained and the stability and durability of the overall structure are enhanced.

[0050] The foaming end cover assembly 10 of the present application includes an end cover 100, a bubble blocking part 200 and a pressure-bearing part 300. The end cover 100 covers the port at one end of the outer shell 20 of the water heater; the bubble blocking part 200 is arranged in an annular shape and is arranged between the inner tank 30 and the end cover 100. The side of the bubble blocking part 200 away from the end cover 100 abuts against the inner tank 30, and a foaming cavity 210 is axially penetrated by the bubble blocking part 200; the pressure-bearing part 300 is arranged between the end cover 100 and the bubble blocking part 200, and the pressure-bearing part 300 is fitted and connected to the side of the bubble blocking part 200 away from the inner tank 30, cooperating with the inner tank 30 to seal the foaming cavity 210. The present application arranges a pressure-bearing member 300 between the bubble-blocking member 200 and the end cover 100. By setting the pressure-bearing member 300, the axial pressure-bearing capacity of the foaming end cover assembly 10 is improved, the pressure on the end cover 100 is effectively reduced, and the problem of extrusion deformation of the end cover 100 caused by the expansion of the foaming material is avoided, thereby maintaining the good appearance of the water heater and enhancing the stability and durability of the overall structure; at the same time, the annular setting of the bubble-blocking member 200 and the axial penetration structure of the foaming cavity 210 allow the end of the inner tank 30 to be filled with more foaming material, thereby improving the thermal insulation performance of the inner tank 30.

[0051] 1 to 3 , in one embodiment, the bubble blocking member 200 is provided with a plurality of connecting sleeves 220 along its circumference, and a plurality of plug-in posts 310 that are plugged into the connecting sleeves 220 are provided on the side of the pressure-bearing member 300 close to the bubble blocking member 200. It is understood that the side of the connecting sleeve 220 close to the pressure-bearing member 300 is at least partially hollow, and the bubble blocking member 200 can be arranged in multiple circumferential directions, with the pressure-bearing members 300 corresponding to each other. The plug-in posts 310 on the pressure-bearing member 300 are used in conjunction with the connecting sleeves 220 and inserted into the connecting sleeves 220 to form a connection. In this way, the mutual locking between the plug-in posts 310 and the connecting sleeves 220 realizes the combination of the pressure-bearing member 300 and the bubble blocking member 200, thereby increasing the structural stability and rigidity of the overall foaming end cover assembly 10.

[0052] Furthermore, in one embodiment, the connecting sleeve 220 is extended along the axial direction and has a plug-in portion 221 and an abutting portion 222. The plug-in portion 221 and the abutting portion 222 are respectively arranged at both ends of the connecting sleeve 220 along the axial direction. The plug-in portion 221 is arranged near the pressure-bearing member 300, and the plug-in portion 221 is provided with an inserting groove 221a. The inserting groove 221a cooperates with the inserting column 310 for insertion. The abutting portion 222 is arranged near the inner liner 30 and has an abutting surface 222a that is adapted to the shape of the inner liner 30. It is understandable that the connecting sleeve 220 is extended along the axial direction, that is, the connecting sleeve 220 extends along the axial direction. The connecting sleeve 220 has two ends, namely the plug-in portion 221 and the abutting portion 222, which are respectively arranged in the axial direction of the connecting sleeve 220. The plug-in portion 221 is arranged at a position close to the pressure-bearing member 300, and is provided with a plug-in groove 221a on the plug-in portion 221. The plug-in groove 221a is plugged into the plug-in column 310 to achieve the connection between the pressure-bearing member 300, the plug-in column 310 and the connecting sleeve 220. The abutment portion 222 is arranged at a position close to the inner liner 30, and is provided with an abutment surface 222a that is adapted to the shape of the inner liner 30. The abutment surface 222a can cooperate with the inner liner 30, thereby forming an effective support and fixation between the inner liner 30 and the bubble blocking member 200. In this embodiment, by providing the plug-in groove 221a and the abutment surface 222a at both ends of the connecting sleeve 220 in the axial direction, the connection stability and sealing performance between the pressure-bearing member 300, the bubble blocking member 200, the inner liner 30 and other components can be enhanced, while facilitating installation and disassembly.

[0053] 3 , in one embodiment, a buffer port 230 is formed between two adjacent connecting sleeves 220, the foam blocking member 200, and the inner liner 30, and the buffer port 230 is communicated with the foaming cavity 210. It can be understood that a buffer port 230 is formed between the two adjacent connecting sleeves 220, the foam blocking member 200, and the inner liner 30 through the enclosed design, and the buffer port 230 is communicated with the foaming cavity 210. The buffer port 230 is used to buffer the gas space when the foaming material is foaming and filling the foaming cavity 210, so as to facilitate the foaming material to fill the entire foaming cavity 210, enhance the flow channel of the foaming material, and enable the foaming material to quickly fill the foaming cavity 210. That is, the buffer port 230 is provided to provide a buffer space when the foaming material is injected or flowed out, so as to reduce pressure fluctuations or shocks.

[0054] 1 and 2 , in one embodiment, the bubble blocking member 200 and the pressure-bearing member 300 are disposed on their mutually abutting end surfaces, one of which is provided with a sealing protrusion 320 and the other with a sealing groove 240. The sealing protrusion 320 abuts the sealing groove 240 to seal and position the bubble blocking member 200 and the pressure-bearing member 300. It will be understood that, on the mutually abutting end surfaces of the bubble blocking member 200 and the pressure-bearing member 300, one of the components is provided with a sealing protrusion 320 and the other is provided with a sealing groove 240. When the bubble blocking member 200 and the pressure-bearing member 300 are abutted together, the sealing protrusion 320 enters the sealing groove 240, thereby forming a sealed structure. In this embodiment, the sealing protrusion 320 and the sealing groove 240 cooperate to achieve a sealed position between the bubble blocking member 200 and the pressure-bearing member 300. This ensures that the connection between the bubble blocking member 200 and the pressure bearing member 300 is tight and stable, and prevents the foaming material from leaking from the connection.

[0055] 1 and 3 , in one embodiment, the pressure-bearing member 300 has a raised portion 330 that protrudes from the bubble-blocking member 200 toward the end cap 100, and the raised portion 330 is arranged corresponding to the foaming cavity 210. It is understandable that the pressure-bearing member 300 has a raised portion 330 that protrudes from the bubble-blocking member 200 toward the end cap 100. This increases the volume of the foaming cavity 210 and the amount of foaming material injected, thereby improving the thermal insulation performance of the foaming end cap assembly 10. The raised portion 330 is arranged corresponding to the foaming cavity 210, meaning that the raised portion 330 and the foaming cavity 210 are designed to cooperate or interact with each other. This helps the pressure-bearing member 300 better adapt to and transmit pressure when under pressure, and the corresponding arrangement with the foaming cavity 210 may facilitate the flow and injection of more foaming material.

[0056] Furthermore, in one embodiment, the curvature of the raised portion 330 is greater than or equal to the curvature of the corresponding end surface of the inner liner 30. It will be appreciated that the curvature of the raised portion 330 is greater than or equal to the curvature of the corresponding end surface of the inner liner 30. This allows the raised portion 330 to better adapt to and balance the curvature of the end surface of the inner liner 30 when subjected to pressure. This helps to improve the connection stability and sealing performance between the pressure-bearing member 300 and the inner liner 30, while also preventing the foam material from leaking from the connection during use.

[0057] Referring to Figure 3, in one embodiment, the pressure-bearing member 300 is provided with multiple pressure-bearing structures on the side facing away from the bubble-blocking member 200. These pressure-bearing structures extend radially outward from the axis. Furthermore, the pressure-bearing structures include annular ribs 340 and radial ribs 350. The radial ribs 350 are arranged in a circumferential array around the annular rib 340, intersecting the annular ribs 340 and radial ribs 350. It is understood that multiple pressure-bearing structures are provided on the other side of the pressure-bearing member 300, that is, the side facing away from the bubble-blocking member 200. The pressure-bearing structures extend radially outward from the axis, helping the pressure-bearing member 300 to better withstand and transmit pressure. In addition to the specific structural form described in this embodiment, the pressure-bearing structures may be other pressure-bearing structures obtained by modifying the present embodiment, without limitation. The pressure-bearing structures all include annular ribs 340 and radial ribs 350. The radial ribs 350 are arranged in a circumferential array around the annular rib 340. The annular rib 340 and the radial rib 350 are arranged to intersect each other, thereby enhancing the strength and stability of the pressure-bearing structure.

[0058] Referring to Figures 1 and 2, in one embodiment, the bubble blocking member 200 has an inclined annular surface 250 on the side proximal to the inner liner 30. The inclined annular surface 250 is tilted gradually away from the axis of the pressure-bearing member 300 toward the inner liner 30. The abutment portion 222 of the connecting sleeve 220 protrudes from the inclined annular surface 250 and abuts the inner liner 30. It will be understood that the bubble blocking member 200 has an inclined annular surface on the side proximal to the inner liner 30. The design of the inclined annular surface 250 facilitates the end face of the connecting sleeve 220 extending toward the inner liner 30. It also secures the connecting sleeve 220 in abutment with the inner liner 30, preventing the end face of the bubble blocking member 200 from interfering with the inner liner 30 and affecting assembly accuracy. The inclined annular surface 250 is tilted gradually away from the axis of the pressure-bearing member 30 toward the inner liner 30. This allows for better conformity to the outer contour of the inner liner 30, improving compatibility between the two. The abutting portion 222 of the connecting sleeve 220 protrudes from the inclined annular surface 250 and abuts against the inner liner 30 , thereby enhancing the connection stability and sealing performance among the bubble blocking member 200 , the connecting sleeve 220 , the pressure bearing member 300 and the inner liner 30 .

[0059] The present application also provides a water heater, which includes the above-mentioned foaming end cover assembly 10, an outer shell 20 and an inner tank 30, wherein the foaming end cover assembly 10 and the inner tank 30 are both arranged in the outer shell 20, wherein the specific structure of the foaming end cover assembly 10 refers to the above-mentioned embodiment; it can be understood that since the above-mentioned foaming end cover assembly 10 is used in the water heater, the embodiment of the water heater includes all technical solutions of all embodiments of the above-mentioned foaming end cover assembly 10, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0060] Finally, it should be noted that the above embodiments are intended only to illustrate the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present application do not depart from the scope of the technical solutions of the present application and should be encompassed by the claims of the present application.

Claims

1. A foaming end cap assembly, comprising: An end cover, the end cover covers a port at one end of the outer shell of the water heater; A bubble blocking member, the bubble blocking member is arranged in an annular shape, the bubble blocking member is arranged between the inner liner and the end cover, the side of the bubble blocking member away from the end cover abuts against the inner liner, and the bubble blocking member is provided with a foaming cavity along the axial direction; A pressure-bearing member is disposed between the end cover and the bubble-blocking member, and is arranged on a side of the bubble-blocking member away from the inner liner, cooperating with the inner liner to block the foaming cavity.

2. The foaming end cap assembly according to claim 1, wherein: The bubble blocking member is provided with a plurality of connecting sleeves along its circumference, and a plurality of plug-in columns plugged with the connecting sleeves are provided on one side of the pressure bearing member close to the bubble blocking member.

3. The foaming end cap assembly according to claim 2, wherein: The connecting sleeve is extended along the axial direction, and has an inserting portion and an abutting portion. The inserting portion and the abutting portion are respectively arranged at two ends of the connecting sleeve along the axial direction. The inserting portion is arranged close to the pressure-bearing part, and an inserting groove is arranged on the inserting portion. The inserting groove is plugged with the inserting column, and the abutting portion is arranged close to the inner liner, and the abutting portion has an abutting surface that is adapted to the shape of the inner liner.

4. The foaming end cap assembly according to claim 3, wherein: A buffer port is formed between two adjacent connecting sleeves, the foam blocking member and the inner tank, and the buffer port is communicated with the foaming cavity.

5. The foaming end cap assembly according to any one of claims 1 to 4, wherein: One of the mutually abutting end surfaces of the bubble blocking member and the pressure bearing member is provided with a sealing protrusion, and the other is provided with a sealing groove, and the sealing protrusion abuts against the sealing groove to seal and position the bubble blocking member and the pressure bearing member.

6. The foaming end cap assembly according to any one of claims 1 to 5, wherein: The pressure bearing member has a raised portion, the raised portion is protruded from the bubble blocking member toward the end cover, and the raised portion is arranged corresponding to the foaming cavity.

7. The foaming end cap assembly according to claim 6, wherein: The curvature of the raised portion is greater than or equal to the curvature of the corresponding end surface of the inner container.

8. The foaming end cap assembly according to any one of claims 1 to 7, wherein: A plurality of pressure-bearing structures are arranged on a side of the pressure-bearing member away from the bubble-blocking member, and the plurality of pressure-bearing structures are radially extended outward from the axis.

9. The foaming end cap assembly according to claim 8, wherein: The pressure-bearing structure includes annular convex ribs and radial convex ribs. The radial convex ribs are arranged in an annular array in the circumferential direction of the annular convex ribs. The annular convex ribs are arranged to intersect with the radial convex ribs.

10. The foaming end cap assembly according to any one of claims 2 to 4, wherein: The bubble blocking member has an inclined annular surface on one side close to the inner container. The inclined annular surface is inclined from the pressure-bearing member toward the inner container and gradually away from the axis. The abutting portion of the connecting sleeve protrudes from the inclined annular surface and abuts against the inner container.

11. A water heater, comprising the foaming end cover assembly according to any one of claims 1 to 10.

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