Nonmetal inner container and water container

Abstract

The utility model discloses a non-metal inner container, a water container and a manufacturing method of the non-metal inner container, and the non-metal inner container comprises a main container opening which is formed to be an outwards-turned container opening positioned on the neck part of the top wall of an inner container body and is used for a circuit to enter the non-metal inner container; the water outlet pipe and the water inlet pipe are formed on the bottom wall of the liner body. According to the water container, separation of a water path and a circuit is achieved, and potential safety hazards are avoided to the maximum extent. Moreover, due to the fact that the structural design that the water path and the circuit are separated is adopted, compared with the prior art (the water path and the circuit are not separated, and components entering from the main container opening are reduced), the size of the main container opening is allowed to be smaller, the small-size main container opening can provide better pressure bearing capacity, and manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of water treatment, and in particular to a non-metallic inner tank and water tank for hot water equipment. Background Technology

[0002] With the improvement of people's living standards, water heaters have become an essential household appliance. In current technology, metal-enamel tanks are often used as the water storage unit, and a heating element (circuit) is usually installed inside this tank to heat the water. However, metal-enamel tanks have drawbacks such as heavy weight, low insulation coefficient, poor corrosion resistance, and high energy consumption during processing. These problems limit the installation and use of water heaters, and due to corrosion, the heated water quality deteriorates after a period of use, significantly impacting customer experience.

[0003] Therefore, technicians considered using non-metallic water tank technology to replace metallic water tanks. For example, Chinese patent CN219868491U discloses a structure of a non-metallic inner tank, which achieves the replacement of the metallic inner tank. However, it can be seen that it only has one main opening. The heating unit, temperature control unit, inlet and outlet, anti-dry burning sensor, etc. are all placed through this main opening. Therefore, the size of the main opening is usually large, and the water circuit and circuit are mixed together, which poses a safety hazard.

[0004] For safety reasons, technicians might easily conceive of separating the water and electrical circuits. Therefore, Chinese patent CN217604342U discloses an inner tank with a side opening, where the inlet and outlet pipes are separated from the main opening and placed on the side of the inner tank, achieving separation of the electrical and water circuits. However, this inner tank is a metal inner tank, as openings can be easily created through welding and machining, making it relatively easy to implement. Non-metallic inner tanks require consideration of molding processes and structural strength. Often, this side opening requires drilling holes in the winding layer, which disrupts the continuity of the winding layer and significantly reduces its strength. Water heater inner tanks operate under high temperature and high pressure conditions, and damage to the winding layer would have unpredictable consequences. Therefore, this solution of separating the water and electrical circuits cannot be applied to non-metallic inner tanks.

[0005] Non-metallic inner tanks often consist of an integral inner tank layer, formed by seamless blow molding. A composite material layer is then wrapped around the outer side of this inner tank layer using a wet winding method. This inner tank layer also includes an opening. Because the opening is part of the inner tank layer, it requires additional components to reinforce its structure and ensure high pressure resistance, especially important for hot water applications where pressure requirements are extremely high. This is why non-metallic inner tanks typically have only one opening; adding an extra interface means a more complex winding method and higher structural costs. This invention, through research on blow molding molds, separates the inlet and outlet from the main opening and places them at the other end of the inner tank, thus ensuring the integrity of the winding layer. Regarding the strength design of the inlet and outlet, the characteristics of the wet winding method can be utilized to bypass the inlet and outlet and wrap the exposed areas of the inner tank. However, this method requires extremely precise winding procedures, avoiding the pillars of the inlet and outlet, and may even require manual intervention, making it unsuitable for mass production. Our utility model introduces a base 9, which is placed between the inner liner and the winding layer. The base itself is used to transmit force and strengthens the structure of the inlet and outlet, achieving multiple benefits in one fell swoop. Utility Model Content

[0006] The utility model description section introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] The technical problem to be solved by this utility model is to provide a non-metallic inner liner with a water circuit and electrical circuit separation structure, which can provide a high-strength inner liner, and is low-cost and easy to manufacture.

[0008] To solve the above-mentioned technical problems, the non-metallic inner liner provided by this utility model includes:

[0009] The main inlet 3 is formed as an everted inlet located on the neck 2 of the top wall of the inner liner 1, through which the circuit enters the non-metallic inner liner.

[0010] The outlet pipe 4 and the inlet pipe 5 are formed on the bottom wall of the inner tank 1. The specific location of the outlet pipe 4 and the inlet pipe 5 is not limited and can be set according to actual needs.

[0011] Preferably, the non-metallic inner liner is further improved by being manufactured using a one-piece molding process.

[0012] Preferably, the non-metallic inner liner is further improved by manufacturing the inner liner 1 using an integral molding process;

[0013] Two through holes are made at the bottom of the inner tank 1. The water outlet pipe 4 and the water inlet pipe 5 are fixedly connected to the two through holes respectively. That is, the inner tank 1 is manufactured by an integral molding process and then the water outlet pipe 4 and the water inlet pipe 5 at the bottom are fixedly connected.

[0014] Preferably, the non-metallic inner liner is further improved by manufacturing the inner liner 1 using a split molding process and then welding it together to form the inner liner 1.

[0015] Two through holes are made at the bottom of the inner liner 1, and the water outlet pipe 4 and the water inlet pipe 5 are respectively fixedly connected to the two through holes.

[0016] To solve the above-mentioned technical problems, this utility model provides a water tank, which has the non-metallic inner liner described in any one of the above-mentioned claims, and further includes:

[0017] Fastener 6, which is fitted onto neck 2;

[0018] The pressure sleeve 7 is fitted onto the fastener 6, and its bottom surface is formed as an arc surface that adapts to the top surface of the inner liner 1 around the main liner 3, and the top surface of its inner liner 1 forms a surface contact.

[0019] The winding layer 8 covers the inner liner 1 and the lower part of the pressure sleeve 7, and exposes the water outlet and water inlet.

[0020] Preferably, the water tank is further improved by including:

[0021] The base 9 has an upper part that forms an arc surface that is compatible with the bottom surface of the inner liner 1, and its upper part forms a surface contact with the lower part of the inner liner 1.

[0022] Water outlet pipe 4 and water inlet pipe 5 respectively pass through base 9;

[0023] The winding layer 8 covers the inner liner 1, the pressure sleeve 7 and the base 9, and exposes the water outlet and the water inlet.

[0024] Preferably, the water tank is further improved such that the fastener 6 is formed as a split structure.

[0025] This utility model provides a method for manufacturing the water tank (corresponding to the above-mentioned solution without a base), comprising the following steps:

[0026] S1 provides a non-metallic inner liner, fasteners 6 and pressure sleeves 7;

[0027] S2, fastener 6 is fitted onto the non-metallic inner neck 2;

[0028] S3, fit the pressure sleeve 7 onto the neck 2 and fastener 6 of the non-metallic inner liner;

[0029] S4, forming a winding layer 8 that covers the non-metallic inner liner and the lower part of the pressure sleeve 7.

[0030] This utility model provides a method for manufacturing the water tank (corresponding to the above-mentioned solution with a base), comprising the following steps:

[0031] S1 provides a non-metallic inner liner, fasteners 6, pressure sleeves 7 and base 9;

[0032] S2, fastener 6 is fitted onto the non-metallic inner neck 2;

[0033] S3, fit the pressure sleeve 7 onto the neck 2 and fastener 6 of the non-metallic inner liner;

[0034] S4', pass the water outlet pipe 4 and the water inlet pipe 5 out of the base 9;

[0035] S5, forming a winding layer 8 to cover the non-metallic inner liner, the lower part of the pressure sleeve 7 and the upper part of the base 9.

[0036] This utility model, employing a novel structural design and manufacturing method, can achieve at least the following technical effects;

[0037] 1. The water tank of this utility model achieves separation of water circuit and electrical circuit, minimizing safety hazards. Furthermore, due to the structural design of separating water circuit and electrical circuit, the main tank inlet size of this utility model is smaller than that allowed by existing technology (water circuit and electrical circuit are not separated, reducing the number of components entering through the main tank inlet). The smaller main tank inlet provides better pressure resistance and lower manufacturing cost.

[0038] 2. In this utility model, the main inlet and neck of the water tank together form an "I" shaped structure. Fasteners are fitted onto the "I" shaped structure, and after the pressure sleeve is installed, a wrapping layer is wrapped around it. The wrapping layer covers at least to the lower edge of the neck. This makes the main inlet, neck, pressure sleeve and wrapping layer form a pressure-bearing whole, which constitutes a stable installation and provides high pressure resistance while providing installation convenience.

[0039] 3. In a preferred embodiment of this utility model, a base is added, and the water outlet pipe and water inlet pipe extend out of the base. The base and the water tank are wound together by a winding layer to form a pressure-bearing whole, thereby transmitting force from top to bottom using the winding layer.

[0040] Furthermore, the base and the winding layer can also provide support for the water outlet and water inlet pipes along the pipe axis, improving the strength and stability of the water outlet and water inlet pipes. Attached Figure Description

[0041] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the present invention, supplementing the description in the specification. However, these drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by the exemplary embodiments of the present invention. The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0042] Inner liner 1

[0043] Neck 2

[0044] Main gallbladder 3

[0045] Water outlet pipe 4

[0046] Water inlet pipe 5

[0047] Fastener 6

[0048] Pressure sleeve 7

[0049] 8 winding layers.

[0050] Explanation of reference numerals in the attached figures:

[0051] Figure 1 This is a schematic diagram of the non-metallic inner liner structure of this utility model.

[0052] Figure 2 This is a schematic diagram of the water tank decomposition structure of this utility model. Figure 1 .

[0053] Figure 3 This is a schematic diagram of the water tank decomposition structure of this utility model. Figure 2 . Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can fully understand other advantages and technical effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through different specific embodiments, and various details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of this utility model can be implemented in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of this utility model thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "combined" to another element, the element can be directly connected or combined to the other element, or there may be intermediate elements. The difference is that when an element is referred to as "directly connected" or "directly combined" to another element, there are no intermediate elements. Throughout the drawings, the same reference numerals always denote the same elements. As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0055] First embodiment;

[0056] refer to Figure 1 As shown, this utility model provides a non-metallic inner liner, comprising:

[0057] The main inlet 3 is formed as an everted inlet located on the neck 2 of the top wall of the inner liner 1, which allows the circuit to enter the non-metallic inner liner; for example, the everted inlet and the neck together form a structure similar to the "I" shape.

[0058] Water outlet pipe 4 and water inlet pipe 5 are formed on the bottom wall of inner tank 1.

[0059] Second embodiment;

[0060] This utility model provides a non-metallic inner liner, which is based on the structure provided in the first embodiment above. The non-metallic inner liner is manufactured by an integral molding process, such as blow molding or rotational molding. That is, the inner liner body 1, neck 2, main liner opening 3, water outlet pipe 4 and water inlet pipe 5 are all integrally molded.

[0061] Third embodiment;

[0062] This utility model provides a non-metallic inner liner, which is based on the structure provided in the first embodiment above, wherein the inner liner 1 is manufactured by an integral molding process, for example, the inner liner 1 is manufactured by a blow molding process or a rotational molding process, that is, the inner liner 1, the neck 2 and the main liner opening 3 are integrally molded.

[0063] Two through holes are made at the bottom of the inner liner 1. The water outlet pipe 4 and the water inlet pipe 5 are fixedly connected to the two through holes respectively. For example, the water outlet pipe 4 and the water inlet pipe 5 are connected to the two through holes by thread, adhesive or welding respectively.

[0064] Fourth embodiment;

[0065] This utility model provides a non-metallic inner liner, which is based on the structure provided in the first embodiment above, wherein the inner liner 1 is manufactured by a split molding process and then welded to form the inner liner 1;

[0066] For example, a two-part inner liner can be made by thermoforming, roll forming, or compression molding (a multi-part inner liner can also be made), and then the two-part inner liner can be fixed together by gluing or welding to form the inner liner.

[0067] Two through holes are made at the bottom of the inner liner 1. The water outlet pipe 4 and the water inlet pipe 5 are fixedly connected to the two through holes respectively. For example, the water outlet pipe 4 and the water inlet pipe 5 are connected to the two through holes by thread, adhesive or welding respectively.

[0068] Fifth embodiment;

[0069] refer to Figure 2 Combination Figure 1 As shown, this utility model provides a water tank, which has a non-metallic inner liner as described in any one of the first to fourth embodiments, and further includes:

[0070] Fastener 6, which is fitted onto neck 2;

[0071] It should be noted that, for ease of installation, fastener 6 is preferably a split structure, for example, a two-lobed flange (or a multi-lobed flange) can be used as a split fastener.

[0072] The pressure sleeve 7 is fitted onto the fastener 6, and its bottom surface is formed as an arc surface that adapts to the top surface of the inner liner 1 around the main liner 3, and the top surface of its inner liner 1 forms a surface contact.

[0073] For example, the pressure sleeve 7 is a straw hat shape with an opening in the middle of the top wall of the hat body. The straw hat shape includes: a hat body and a ring-shaped brim at the bottom of the hat body (wherein, the brim is preferably a ring-shaped brim, but it can also be a split brim). The size of the opening is less than or equal to the size of the main lining opening 3. The remaining part of the top wall of the straw hat body forms a surface contact with the top wall of the outward-turned part of the main lining opening 3 (which can be fixed together by screws). The pressure sleeve 7 (the remaining part of the top wall of the straw hat body), the main lining opening 3 (the top wall of the outward-turned lining opening), and the fastener 6 can be fixed together by screws.

[0074] The winding layer 8 covers the inner liner 1 and the lower part of the pressure sleeve 7 (i.e., the cap edge position), and exposes the water outlet and water inlet.

[0075] Sixth embodiment;

[0076] This utility model provides a water tank, which is a further improvement on the fifth embodiment described above, and further includes:

[0077] The base 9 has an upper part that is formed to match the bottom surface of the inner liner 1, and its upper part is in surface contact with the lower part of the inner liner 1; for example, the base 9 is formed into a bowl-shaped structure.

[0078] Water outlet pipe 4 and water inlet pipe 5 respectively pass through base 9;

[0079] The winding layer 8 covers the inner liner 1, the pressure sleeve 7 and the base 9, and exposes the water outlet and the water inlet.

[0080] Alternatively, the inner liner in the fifth or sixth embodiment may be an integral structure or a separate structure.

[0081] Seventh embodiment;

[0082] This utility model provides a method for manufacturing the water tank according to the fifth embodiment, comprising the following steps:

[0083] S1 provides a non-metallic inner liner, fasteners 6 and pressure sleeves 7;

[0084] S2, fastener 6 is fitted onto the non-metallic inner neck 2;

[0085] S3, fit the pressure sleeve 7 onto the neck 2 and fastener 6 of the non-metallic inner liner;

[0086] S4, forming a winding layer 8 that covers the non-metallic inner liner and the lower part of the pressure sleeve 7.

[0087] Eighth embodiment;

[0088] This utility model provides a method for manufacturing the water tank according to the sixth embodiment, comprising the following steps:

[0089] S1 provides a non-metallic inner liner, fasteners 6, pressure sleeves 7 and base 9;

[0090] S2, fastener 6 is fitted onto the non-metallic inner neck 2;

[0091] S3, fit the pressure sleeve 7 onto the neck 2 and fastener 6 of the non-metallic inner liner;

[0092] S4', pass the water outlet pipe 4 and the water inlet pipe 5 out of the base 9;

[0093] S5, forming a winding layer 8 to cover the non-metallic inner liner, the lower part of the pressure sleeve 7 and the upper part of the base 9.

[0094] It should be further explained that the manufacturing method provided in the eighth embodiment adds a base 9 compared to the manufacturing method provided in the seventh embodiment. The presence of the base 9 provides support for the outlet and inlet pipes along the pipe axis, improving their strength and stability. Simultaneously, minimizing the size of the outlet and inlet pipes protruding from the base reduces the difficulty of winding the winding layer.

[0095] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0096] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A non-metallic inner liner, characterized in that, include: The main inlet (3) is formed as an everted inlet located on the neck (2) of the top wall of the inner liner (1), through which the circuit enters the non-metallic inner liner; The outlet pipe (4) and the inlet pipe (5) are formed on the bottom wall of the inner liner (1).

2. The non-metallic inner liner as described in claim 1, characterized in that: The non-metallic inner liner is manufactured using a one-piece molding process.

3. The non-metallic inner liner as described in claim 2, characterized in that: The inner liner (1) is manufactured using a one-piece molding process; Two through holes are made at the bottom of the inner liner (1), and the water outlet pipe (4) and the water inlet pipe (5) are fixedly connected to the two through holes respectively.

4. The non-metallic inner liner as described in claim 1, characterized in that: The inner liner (1) is manufactured by a split molding process and then welded together to form the inner liner (1). Two through holes are made at the bottom of the inner liner (1), and the water outlet pipe (4) and the water inlet pipe (5) are fixedly connected to the two through holes respectively.

5. A water tank having the non-metallic inner liner as described in claim 1, characterized in that, Also includes: Fastener (6), which is fitted onto the neck (2); The pressure sleeve (7) is fitted onto the fastener (6), and its bottom surface is formed as an arc surface that adapts to the top surface of the inner liner (1) around the main liner opening (3), and its top surface of the inner liner (1) forms a surface contact. The winding layer (8) covers the lower part of the inner liner (1) and the pressure sleeve (7), and exposes the water outlet and water inlet.

6. The water tank as described in claim 5, characterized in that, Also includes: The base (9) has an upper part that forms an arc surface that is compatible with the bottom surface of the inner liner (1), and its upper part forms a surface contact with the lower part of the inner liner (1). The water outlet pipe (4) and the water inlet pipe (5) pass through the base (9) respectively; The winding layer (8) covers the inner liner (1), the pressure sleeve (7) and the base (9), and exposes the water outlet and the water inlet.

7. The water tank as described in claim 5, characterized in that: The fastener (6) is formed as a split structure.

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