Leak-proof material water heater housing

Abstract

The utility model belongs to the technical field of heat generating device, especially relate to the shell or cover of water heater, specifically relate to a leakproof material water heater shell. The utility model discloses first shell, second shell, first shell includes first mounting piece, and second shell includes second mounting piece, and first mounting piece and second mounting piece are configured to mutual clamping to make first shell, second shell jointly form first cavity, its characterized in that, first mounting piece and second mounting piece clamping have at least one contact surface after and contact surface and first mounting piece second mounting piece form the accommodating cavity that communicates with first cavity. The utility model sets up accommodating cavity as buffer zone, can receive and store the foaming material that foams and overflows in advance, consumes its energy and pressure, and utilizes the solidification characteristics of foaming material in the filling process, makes its flowability reduce even solidification before reaching shell joint.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat generation devices, and particularly relates to the outer shell or cover of a water heater, specifically to a leak-proof water heater shell. Background Technology

[0002] Foaming material is usually injected into the shell of a water heater to achieve a heat preservation effect. For example, the foaming material injection method disclosed in Patent Document 1 applies the foaming material into the cavity of the hollow shell part through the glue injection hole to achieve a heat preservation effect on the inner tank of the water heater.

[0003] However, during the injection of foaming material, the foaming material may leak out from the installation gaps of the shell due to the foaming expansion behavior during the injection process, affecting product quality.

[0004] Patent document 2 provides a housing assembly for a water heater, wherein an annular groove is provided on the lower periphery of the upper housing, which is connected to an annular protrusion provided on the upper periphery of the lower housing, thereby improving the tightness of the fit between the housings and preventing leakage of the foaming material in the housing.

[0005] However, due to manufacturing process limitations, the annular groove and annular protrusion often cannot be installed perfectly, and there will generally be some gaps. These tiny gaps will cause the foaming material to leak out preferentially during the expansion process, and there is still a risk of foaming material overflow.

[0006] Patent Document 1: Chinese invention patent with publication number CN115838466A and publication date of 2023-03-24.

[0007] Patent Document 2: Chinese invention patent with publication number CN104110858A and publication date of 2014-10-22. Utility Model Content

[0008] The purpose of this utility model is to provide a leak-proof water heater shell, which stores some of the foamed material that has been squeezed out by setting a receiving cavity, thus preventing the material from directly overflowing from any possible gaps.

[0009] The technical solution adopted by this utility model to solve the above problems is: a leak-proof water heater shell, including a first shell and a second shell, the first shell including a first mounting member, the second shell including a second mounting member, the first mounting member and the second mounting member being configured to interlock with each other so that the first shell and the second shell together form a first cavity; after the first mounting member and the second mounting member are interlocked, they have at least one contact surface and the contact surface and the first mounting member and the second mounting member form a receiving cavity communicating with the first cavity.

[0010] A further preferred technical solution is that: the first mounting component includes an inner extension, an outer extension, and a connector, and the second mounting component includes an insert; wherein, the two ends of the connector are respectively connected to the inner extension and the outer extension, the inner extension is located in the first cavity, the insert is located between the inner extension and the outer extension, and the contact surface is formed by the abutment of the connector and the insert.

[0011] A further preferred technical solution is that the outer extension has a longer extension length than the inner extension.

[0012] A further preferred technical solution is that the second mounting component further includes a stepped component, wherein the stepped component extends toward the first cavity and forms a stepped cavity communicating with the receiving cavity with the side of the insert.

[0013] A further preferred technical solution is that a buffer cavity is formed between the outer extension and the insert.

[0014] A further preferred technical solution is that the end of the inner extension is provided with a rounded corner.

[0015] A further preferred technical solution is that the end of the insert has rounded corners.

[0016] A further preferred technical solution is that the end of the outer extension is provided with a rounded corner.

[0017] A further preferred technical solution is that the first housing and the second housing are also provided with mounting holes.

[0018] A further preferred technical solution is that the second housing is provided with an injection hole.

[0019] In summary, this utility model has the following advantages: 1. This utility model sets up a receiving cavity as a buffer zone, which can preferentially receive and store the foaming material that overflows due to foaming expansion, consume its energy and pressure, and utilize the curing characteristics of the foaming material during the filling process to reduce its fluidity or even solidify it before reaching the shell joint, thereby fundamentally avoiding the leakage of foaming material from the unavoidable tiny gaps between the first and second mounting parts.

[0020] 2. This utility model also includes a stepped cavity connected to the receiving cavity, which forces the flow path of the foaming material to change direction, further consuming its energy and delaying its arrival at the key contact surface, thus allowing more time for curing.

[0021] 3. By designing the outer extension to be longer than the inner extension, this utility model enhances the structure's resistance to the outward thrust generated by the expansion of the foam material, prevents excessive deformation of the insert from causing separation of the critical contact surfaces, and ensures the effectiveness of the main sealing line.

[0022] 4. This utility model forms a buffer cavity between the outer extension and the insert, providing space for the minor deformation of the component when it is heated or compressed, avoiding rigid contact, and ensuring the long-term stability of the seal of the key contact surface. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the water heater shell of this utility model.

[0024] Figure 2 This is a structural schematic diagram of the water heater casing from another perspective.

[0025] Figure 3 This is a schematic diagram of an explosion of the water heater casing.

[0026] Figure 4 This is a schematic diagram of the water heater casing along the vertical interface.

[0027] Figure 5 This is a structural diagram of the connection between the first and second mounting components.

[0028] Figure 6 This is a structural schematic diagram of the connection between the first and second mounting components from another perspective.

[0029] In the attached drawings, the components represented by each number are as follows: First housing 1, First mounting part 1.1, Inner extension part 1.1.1, Outer extension part 1.1.2, Connector part 1.1.3, Second housing 2, Second mounting part 2.1, Insert part 2.1.1, Stepped part 2.1.2, First cavity 3, Receiving cavity 4, Contact surface 5, Stepped cavity 6, Buffer cavity 7, Mounting hole 8, Glue injection hole 10. Detailed Implementation

[0030] The present invention will be specifically illustrated below with reference to embodiments: This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example:

[0031] The leak-proof water heater housing includes a first housing 1 and a second housing 2. The first housing 1 includes a first mounting member 1.1, and the second housing 2 includes a second mounting member 2.1. The first mounting member 1.1 and the second mounting member 2.1 are configured to interlock with each other so that the first housing 1 and the second housing 2 together form a first cavity 3. After the first mounting member 1.1 and the second mounting member 2.1 are interlocked, they have at least one contact surface 5, and the contact surface 5 and the first mounting member 1.1 and the second mounting member 2.1 form a receiving cavity 4 that communicates with the first cavity 3.

[0032] The second housing 2 has an injection hole 10 for injecting the foaming material to be cured into the first cavity 3. During the curing process, the foaming material expands in all directions. According to fluid mechanics principles, high-pressure foaming material seeks the outlet with the lowest pressure. Without the receiving cavity 4, the weakest link would be the unavoidable tiny gaps between the first mounting component 1.1 and the second mounting component 2.1, into which the foaming material would directly rush. With the receiving cavity 4, because it is directly connected to the first cavity 3 and has a relatively spacious interior, it becomes an area easier to fill than the installation gaps. The compressed foaming material preferentially flows into this less resistant receiving cavity 4. Specifically, the receiving cavity 4 stores some of the excess foaming material that would otherwise flow into the joint. The foaming material needs to fill the receiving cavity 4 first before attempting to enter the narrower installation gaps from its other end. This process consumes the energy and pressure released by the foaming material. In addition, the foaming material has a curing time. During the process of filling the cavity 4, its fluidity will gradually decrease during the initial setting process. When it slowly tries to seep into the installation gaps, its viscosity has increased significantly, and it may even have partially solidified, thus losing its ability to be squeezed out from the tiny gaps.

[0033] Furthermore, the housing structure of this embodiment not only effectively prevents the internal foaming material from leaking outwards during the pouring and curing process, but its multi-layered sealing design also forms a barrier to prevent external liquids, such as water during a shower, from penetrating the housing. The first mounting component 1.1 and the second mounting component 2.1 together form a tortuous sealing path, significantly increasing the difficulty of moisture penetration, thereby protecting the safety of internal electrical components even in humid environments.

[0034] Furthermore, the first mounting component 1.1 includes an inner extension 1.1.1, an outer extension 1.1.2, and a connector 1.1.3, and the second mounting component 2.1 includes an insert 2.1.1; wherein, the two ends of the connector 1.1.3 are respectively connected to the inner extension 1.1.1 and the outer extension 1.1.2, the inner extension 1.1.1 is located in the first cavity 3, the insert 2.1.1 is located between the inner extension 1.1.1 and the outer extension 1.1.2, and the contact surface 5 is formed by the abutment of the connector 1.1.3 and the insert 2.1.1.

[0035] The connector 1.1.3 serves as the basic frame for the first mounting component 1.1, typically a horizontal plate-like structure. Its two ends connect to the inner extension 1.1.1 and the outer extension 1.1.2, forming the "base" of the entire "slot" or "U-shaped" structure. Its lower surface directly abuts against the end of the insert 2.1.1, forming a contact surface 5, which acts as a sealing line to prevent direct leakage of the foaming material. Together with the side of the insert 2.1.1, it encloses one side boundary of the receiving cavity 4. The inner extension 1.1.1 is a wall-like structure extending from one end of the connector 1.1.3. It separates the first cavity 3 and forms the receiving cavity 4, increasing the complexity of the foaming material leakage path. The outer extension 1.1.2 is a wall-like structure extending from the other end of the connector 1.1.3. It stands opposite the inner extension 1.1.1, and together they form a slot on the connector 1.1.3 to accommodate the insert 2.1.1. The outer extension 1.1.2 also serves as the last major physical barrier to prevent the foam material from leaking outward. The foam material needs to fill the space of the first cavity 3 before it can leak out from the tiny assembly gaps on the contact surface 5, and this part can usually be blocked by the outer extension 1.1.2. The insert 2.1.1 is a protrusion on the second mounting part 2.1, usually plate-shaped or tongue-shaped. Its size is designed to be inserted into the slot formed by the inner and outer extensions and the connector. By inserting into the slot, it achieves a mechanical connection with the first mounting part 1.1, fixing the first housing 1 and the second housing 2 together.

[0036] The receiving cavity 4 is actually a narrow space enclosed by the side of the insert 2.1.1, the lower surface of the connector 1.1.3, and the side of the inner extension 1.1.1. The insert 2.1.1 also abuts against the connector 1.1.3 to form a contact surface 5, sealing the most direct leakage path.

[0037] Furthermore, the outer extension 1.1.2 has a longer extension length than the inner extension 1.1.1.

[0038] The expansion of the foam material exerts an outward force on the insert 2.1.1, while the longer extension 1.1.2 provides an inward reaction force, preventing excessive deformation of 2.1.1 that could cause the contact surface 5 to disappear. Specifically, the core function of this length difference is to resist the deformation of the insert 2.1.1 caused by the expansion of the foam material, thereby maintaining the sealing effectiveness of the critical contact surface 5. If the insert 2.1.1 deforms excessively due to the expansion force, gaps or even complete separation of this critical contact surface 5 will occur. By using the longer extension 1.1.2 to suppress the deformation of the insert 2.1.1, it is ensured that the contact surface 5 remains in close contact throughout the entire expansion and curing process of the foam material. This ensures that the receiving cavity 4 functions properly as a "buffer zone," further improving the reliability of leak-proof sealing.

[0039] Furthermore, the second mounting member 2.1 also includes a stepped member 2.1.2, wherein the stepped member 2.1.2 extends toward the first cavity 3 and forms a stepped cavity 6 communicating with the receiving cavity 4 on the side of the insert 2.1.1.

[0040] The stepped cavity 6, located below the receiving cavity 4, is another independent small cavity formed by the side of the stepped component 2.1.2 and the insert 2.1.1, resembling a step in structure. The stepped component 2.1.2 extends from the side of the insert 2.1.1 towards the first cavity 3, thus creating an additional space on the side of the insert 2.1.1. The stepped cavity 6 is directly connected to the receiving cavity 4 of the first-stage buffer, requiring the foaming material to make a 90° turn before entering the receiving cavity 4, consuming some of the energy released by the foaming material to extend its curing time and reach the contact surface 5 as late as possible, reducing the risk of leakage. It is foreseeable that the stepped component 2.1.2 can take various forms, forming multiple stepped cavities 6; this embodiment only shows the case of a single-stage step.

[0041] Furthermore, a buffer cavity 7 is formed between the outer extension 1.1.2 and the insert 2.1.1.

[0042] The function of the buffer cavity 7 is to prevent the outer extension 1.1.2 from being directly affected when the insert 2.1.1 undergoes slight deformation. Specifically, the buffer cavity 7 is a small gap space located between the outer extension 1.1.2 and the insert 2.1.1. The buffer cavity 7 provides a margin for thermal expansion and contraction and slight deformation of the components, avoiding stress generated by rigid contact, thereby ensuring the stability of long-term sealing. Furthermore, the arrangement of the buffer cavity 7 and the receiving cavity 4 facilitates the installation process of the insert 2.1.1.

[0043] Furthermore, the inner extension 1.1.1 has a rounded corner at its end. Furthermore, the insert 2.1.1 has a rounded corner at its end. Furthermore, the outer extension 1.1.2 has a rounded corner at its end. The rounded corners facilitate installation.

[0044] Furthermore, the first housing 1 and the second housing 2 are also provided with mounting holes 8. This allows various lines and pipes to be connected to the inner tank of the water heater through the first housing 1 and the second housing 2. In this embodiment, the first housing 1 and the second housing 2 are each provided with a plurality of semi-circular mounting holes 8, and their positions correspond one-to-one. After being spliced ​​and installed, two semi-circular mounting holes 8 form a circular mounting hole.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of this utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A leak-proof water heater housing, comprising a first housing (1) and a second housing (2), wherein the first housing (1) includes a first mounting member (1.1) and the second housing (2) includes a second mounting member (2.1), the first mounting member (1.1) and the second mounting member (2.1) are configured to interlock with each other so that the first housing (1) and the second housing (2) together form a first cavity (3); characterized in that, After the first mounting member (1.1) and the second mounting member (2.1) are engaged, they have at least one contact surface (5), and the contact surface (5) and the first mounting member (1.1) and the second mounting member (2.1) form a receiving cavity (4) that communicates with the first cavity (3).

2. The leak-proof water heater housing according to claim 1, characterized in that, The first mounting component (1.1) includes an inner extension (1.1.1), an outer extension (1.1.2), and a connector (1.1.3). The second mounting component (2.1) includes an insert (2.1.1). The connector (1.1.3) is connected to the inner extension (1.1.1) and the outer extension (1.1.2) at both ends. The inner extension (1.1.1) is located in the first cavity (3). The insert (2.1.1) is located between the inner extension (1.1.1) and the outer extension (1.1.2). The contact surface (5) is formed by the abutment of the connector (1.1.3) and the insert (2.1.1).

3. The leak-proof water heater housing according to claim 2, characterized in that, The outer extension (1.1.2) has a longer extension length than the inner extension (1.1.1).

4. The leak-proof water heater housing according to claim 2, characterized in that, The second mounting member (2.1) further includes a step member (2.1.2), wherein the step member (2.1.2) extends toward the first cavity (3) and forms a stepped cavity (6) communicating with the receiving cavity (4) on the side of the insert (2.1.1).

5. The leak-proof water heater housing according to claim 2, characterized in that, A buffer cavity (7) is formed between the outer extension (1.1.2) and the insert (2.1.1).

6. The leak-proof water heater housing according to claim 2, characterized in that, The inner extension (1.1.1) has rounded corners at its ends.

7. The leak-proof water heater housing according to claim 2, characterized in that, The insert (2.1.1) has rounded corners at its end.

8. The leak-proof water heater housing according to claim 2, characterized in that, The outer extension (1.1.2) has rounded corners at its ends.

9. The leak-proof water heater housing according to any one of claims 1-8, characterized in that, The first housing (1) and the second housing (2) are also provided with mounting holes (8).

10. The leak-proof water heater housing according to any one of claims 1-8, characterized in that, The second housing (2) is provided with an injection hole (10).

Images