Non-metal inner container for water heater
By designing the clamping structure of the annular flange, the gallbladder flange and the flange reinforcement at the gallbladder of the non-metal inner liner for water heater, the problems of complex structure and difficult processing of the non-metal inner liner are solved, and higher pressure bearing capacity and seal reliability are achieved, and processing costs are reduced.
Patent Information
- Application Number
- CN202421836076.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The non-metal inner liner for existing water heaters has a complex gas port structure, which is difficult to process, resulting in high processing costs.
A non-metal inner liner for water heaters is designed, with an outwardly extending annular flange on the inner side of the gallbladder, and a gallbladder flange on the outer side of the gallbladder. The flange reinforcement clamps the gallbladder flange and the annular flange, and is connected and fixed with the gallbladder flange through the flange reinforcement to improve the strength of the gallbladder structure.
Through this design, the pressure bearing capacity of the non-metal inner liner is improved, the gallbladder structure is simplified, the processing difficulty and cost are reduced, and the seal reliability is enhanced.
Smart Images
Figure CN223036616U_ABST
Abstract
Description
Technical Field
[0002] The utility model relates to the technical field of water heaters, in particular to a non-metallic inner tank for a water heater.
Background Art
[0004] At present, water heaters are commonly used household appliances in people's daily lives. Water heaters are divided into types such as electric water heaters, heat pump water heaters, and solar water heaters. Electric water heaters are widely used because of their convenient use.
[0005] The inner tanks of existing electric water heaters, as water storage components, are mostly made of stainless steel metal inner tanks or inner tanks made of enamel. However, although this type of inner tank meets the pressure-bearing requirements, it has problems such as a low insulation coefficient, poor corrosion resistance, and high processing costs. Therefore, non-metallic inner tanks (such as plastic inner tanks) have begun to replace stainless steel metal inner tanks or enamel inner tanks in the market. However, the cost of non-metallic inner tanks is very high. Especially for the structure of the tank mouth, generally, when plastic parts are blow-molded, copper parts are inlaid inside, and then a threaded copper part is added for connection. The material cost and processing cost are both very high.
Content of the Utility Model
[0007] In order to solve the technical problem that the structure of the tank mouth of the current non-metallic inner tank is complex and the processing difficulty is large, resulting in high processing costs, the utility model proposes a non-metallic inner tank for a water heater.
[0008] The utility model is realized by the following technical solutions:
[0009] A non-metallic inner tank for a water heater, including an inner tank body. An annular flange extending outward and surrounding the tank mouth is provided on the inner side of the tank mouth of the inner tank body. A tank mouth flange is provided on the outer side of the tank mouth of the inner tank body. A flange reinforcing member is clamped between the tank mouth flange and the annular flange. The non-metallic inner tank is fixedly connected to the top of the tank mouth flange through the flange reinforcing member, increasing the strength of the tank mouth structure, enabling the tank mouth to withstand higher internal and external pressures, improving the pressure-bearing capacity of the non-metallic inner tank, and having a simple tank mouth structure and small processing difficulty.
[0010] A non-metallic inner tank for a water heater as described above, wherein the inner diameter of the inner hole of the tank mouth flange is greater than the outer diameter of the annular flange.
[0011] A non-metallic inner tank for a water heater as described above, wherein the inner tank body is made of a plastic layer formed by integral blow molding.
[0012] A non-metallic inner tank for a water heater as described above, wherein a groove is provided at the plastic layer near the tank mouth, and the groove is matched and buckled with the bottom of the tank mouth flange.
[0013] A non-metallic inner tank for a water heater as described above, wherein a fiber reinforcing layer is provided on the outer surface of the plastic layer to integrally wrap the plastic layer and the bottom of the flange of the tank opening, for improving the sealing reliability.
[0014] A non-metallic inner tank for a water heater as described above, wherein the plastic layer is PB plastic.
[0015] A non-metallic inner tank for a water heater as described above, wherein a plurality of connecting parts for increasing the contact area with the top of the flange of the tank opening are provided on the periphery of the flange reinforcing member, and a plurality of second connecting holes for connecting and fixing with the flange of the tank opening are provided on the connecting parts.
[0016] A non-metallic inner tank for a water heater as described above, wherein a plurality of first connecting holes for connecting and fixing with the flange reinforcing member are provided on the top of the flange of the tank opening.
[0017] A non-metallic inner tank for a water heater as described above, wherein a plurality of through holes for enhancing the connection stability with the flange reinforcing member are further provided on the top of the flange of the tank opening.
[0018] A non-metallic inner tank for a water heater as described above, wherein the annular flange is sleeved inside the flange of the tank opening.
[0019] Compared with the prior art, a non-metallic inner tank for a water heater proposed by the present utility model has the following beneficial effects:
[0020] 1. An annular flange extending outward around the tank opening is provided at the inner side of the tank opening of the inner tank body of the present utility model, and a flange of the tank opening is provided at the outer side of the tank opening. The inner hole diameter of the flange of the tank opening is larger than the outer diameter of the annular flange, so as to be sleeved into the annular flange, and a flange reinforcing member is clamped between the flange of the tank opening and the annular flange. The flange of the tank opening and the flange reinforcing member are connected and fixed together, increasing the structural strength of the connection part of the flange of the tank opening, enabling the tank opening to withstand higher internal and external pressures, improving the pressure-bearing capacity of the non-metallic inner tank, and having a simple structure; at the same time, the pressure-bearing capacity of the non-metallic inner tank can be improved only by connecting and fixing the flange reinforcing member and the flange of the tank opening, and the processing difficulty is small.
[0021] 2. A plastic layer for sealing the inner tank body is provided on the outer side of the inner tank body of the present utility model. A groove is provided at the plastic layer near the tank opening, and the groove is matched and buckled with the bottom of the flange of the tank opening. The plastic layer is integrally blow-molded. The bottom of the flange of the tank opening is matched and buckled with the groove of the plastic layer, forming a tight sealing interface between the bottom of the flange of the tank opening and the plastic layer, enhancing the connection stability between the flange of the tank opening and the plastic layer, and improving the sealing reliability of the non-metallic inner tank.
[0022] 3. The inner liner body of the present utility model is made of a plastic layer formed by integral blow molding. The plastic layer formed by integral blow molding can reduce potential leakage points, improve the airtightness and watertightness of the plastic layer, and thus improve the sealing performance of the non-metallic inner liner.
[0023] 4. The outer surface of the plastic layer of the present utility model is provided with a fiber reinforcement layer that integrally wraps the plastic layer and the bottom of the bile port flange to improve the sealing reliability. It can prevent the mechanical properties of the plastic layer from significantly decreasing after being exposed to high temperature and the strength not meeting the usage requirements, resulting in the failure of the sealing performance of the non-metallic inner liner.
Description of the Drawings
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments.
[0026] Figure 1 It is a schematic structural diagram of the product of the present utility model;
[0027] Figure 2 It is an exploded schematic diagram of the present utility model;
[0028] Figure 3 It is a schematic structural diagram of the plastic layer of the present utility model;
[0029] Figure 4 It is a schematic structural diagram of the bile port flange of the present utility model;
[0030] Figure 5 It is a schematic structural diagram of the flange reinforcement member of the present utility model;
[0031] Figure 6 It is a schematic sectional view of the present utility model;
[0032] Figure 7 It is an enlarged schematic diagram of the area A of the present utility model.
Detailed Embodiment
[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the following will further describe the present utility model in detail in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0035] Specific embodiments are combined with Figures 1 to 7As shown in the figure, the technical solution of the present utility model is further described. A non-metallic inner tank for a water heater includes an inner tank body 1. An annular flange 20 extending outward and surrounding the mouth of the inner tank body 1 is provided on the inner side of the mouth of the inner tank body 1. A mouth flange 30 is provided on the outer side of the mouth of the inner tank body 1. The inner hole diameter of the mouth flange 30 is larger than the outer diameter of the annular flange 20 so as to be sleeved into the annular flange 20. A flange reinforcing member 40 is clamped between the mouth flange 30 and the annular flange 20. The non-metallic inner tank is fixedly connected to the top of the mouth flange 30 through the flange reinforcing member 40, which increases the strength of the mouth structure, enables the mouth to withstand higher internal and external pressures, improves the pressure-bearing capacity of the non-metallic inner tank, and has a simple mouth structure and small processing difficulty.
[0036] Further, as a preferred implementation manner of this solution rather than a limitation, the inner tank body 1 is made of a plastic layer 10 formed by one-piece blow molding. A groove 101 is provided on the plastic layer 10 near the mouth of the inner tank. The groove 101 is matched and buckled with the bottom of the mouth flange 30. A fiber reinforcing layer 11 is provided on the outer surface of the plastic layer 10 to integrally wrap the plastic layer 10 and the bottom of the mouth flange 30 for improving the sealing reliability.
[0037] Further, as a preferred implementation manner of this solution rather than a limitation, the material of the plastic layer 10 includes but is not limited to PB plastic, PE, PPR, and PP. Preferably, the material of the plastic layer 10 is PB plastic.
[0038] In this embodiment, the plastic layer is formed by one-piece blow molding, which can reduce potential leakage points, improve the airtightness and watertightness of the plastic layer, and thus improve the sealing performance of the non-metallic inner tank. The bottom of the mouth flange is matched and buckled with the groove of the plastic layer, so that the bottom of the mouth flange and the plastic layer form a tight sealing interface, enhancing the connection stability between the mouth flange and the plastic layer and further improving the sealing reliability of the non-metallic inner tank. The design of wrapping the outer side of the plastic layer with a fiber reinforcing layer can prevent the mechanical properties of the plastic layer from dropping significantly after being exposed to high temperature and the strength not meeting the use requirements, resulting in the failure of the sealing performance of the non-metallic inner tank. At the same time, the fiber reinforcing layer also improves the corrosion resistance of the non-metallic inner tank and the use stability of the overall structure.
[0039] Further, as a preferred implementation manner of this solution rather than a limitation, the annular flange 20 is sleeved in the mouth flange 30, and the height of the annular flange 20 after sleeving is higher than the height of the mouth flange 30.
[0040] Furthermore, as a preferred implementation manner of this solution rather than a limitation, a plurality of first connection holes 31 for connecting and fixing with the flange reinforcement 40 are provided at the top of the bile port flange 30. A plurality of through holes 32 for installing bolts are also provided at the top of the bile port flange 30. The bile port flange 30 includes, but is not limited to, metal sheet metal parts and high-strength plastics, and the bile port flange 30 is preferably a metal sheet metal part.
[0041] In this embodiment, the bile port flange and the flange reinforcement are connected and fixed together, increasing the structural strength of the connection of the bile port flange, enabling the bile port to withstand higher internal and external pressures, and improving the pressure-bearing capacity of the non-metallic inner tank. At the same time, the connection and fixation of the bile port flange and the flange reinforcement can more evenly distribute the stress at the connection, reduce local stress concentration, and enhance the connection tightness of the bile port of the non-metallic inner tank.
[0042] Further, as a preferred implementation manner of this solution rather than a limitation, a plurality of connection parts 41 for increasing the contact area with the top of the bile port flange 30 are provided on the peripheral side of the flange reinforcement 40. A plurality of second connection holes 42 matching the first connection holes 31 of the bile port flange 30 are provided on the connection parts 41. The flange reinforcement 40 can be formed by splitting and combining one or more components.
[0043] In this embodiment, while the flange reinforcement is connected and fixed to the bile port flange, the flange reinforcement is also provided with connection parts for increasing the contact area with the top of the bile port flange, which actually further increases the structural strength of the bile port flange and the flange reinforcement, thereby further enhancing the pressure-bearing capacity of the non-metallic inner tank.
[0044] The working principle of this embodiment is as follows:
[0045] A non-metallic inner tank for a water heater proposed by the present utility model includes an inner tank body 1. An annular flange 20 extending outward around the bile port is provided on the inner side of the bile port of the inner tank body 1. The annular flange 20 is sleeved inside the bile port flange 30. The inner hole diameter of the bile port flange 30 is larger than the outer diameter of the annular flange 20 so as to be sleeved into the annular flange 20. A flange reinforcement 40 is clamped between the bile port flange 30 and the annular flange 20. The first connection holes 31 at the top of the bile port flange 30 and the second connection holes 42 of the flange reinforcement 40 are tightened with screws to connect and fix the bile port flange 30 and the flange reinforcement 40. When the screws are locked, the outward-extending annular flange 20 will provide an outward pulling force, improving the connection tightness at the bile port. When installing the heating pipe and the bile port sealing ring, the bolts pass through the through holes 32 at the top of the bile port flange 30 to lock and fix the connection part 41 of the flange reinforcement 40 and the top of the bile port flange 30 together, clamping the heating pipe and the sealing ring between the bile port flange and the flange pressing plate. The bolts tighten the bile port flange 30 and the flange reinforcement 40 to form a sealing effect.
[0046] The inner container body 1 is made of a plastic layer 10 formed by integral blow molding. The groove 101 on the plastic layer 10 is buckled with the bottom of the flange 30 of the container mouth, so that the flange 30 of the container mouth and the plastic layer 10 form a tight sealing interface, improving the sealing reliability of the non-metallic inner container; the fiber reinforcing layer 11 wraps the plastic layer 10 and the bottom of the flange 30 of the container mouth as a whole, which can prevent the mechanical properties of the plastic layer from dropping significantly after being exposed to high temperature, resulting in the failure of the sealing performance of the non-metallic inner container, and further improving the sealing reliability of the non-metallic inner container.
[0047] Those of ordinary skill in the art should understand that: as described above, an implementation manner is provided in combination with specific content, and it is not considered that the specific implementation of the present utility model is only limited to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any method, structure, etc. that is similar or identical to the present utility model, or any technical deduction or replacement made on the premise of the concept of the present utility model, should be regarded as the protection scope of the present utility model.
Claims
1. A non-metallic inner tank for a water heater, characterized in that: The invention comprises an inner liner body (1), wherein an annular flange (20) extending outwardly and surrounding the liner opening is provided on the inner side of the liner opening of the inner liner body (1), an liner opening flange (30) is provided on the outer side of the liner opening of the inner liner body (1), and a flange reinforcement member (40) is clamped between the liner opening flange (30) and the annular flange (20).
2. A non-metallic inner tank for a water heater according to claim 1, characterized in that: The inner diameter of the gallbladder opening flange (30) is greater than the outer diameter of the annular flange (20).
3. A non-metallic inner tank for a water heater according to claim 1, characterized in that: The inner container body (1) is made of an integrally blow-molded plastic layer (10).
4. A non-metallic inner tank for a water heater according to claim 3, characterized in that: The plastic layer (10) is provided with a groove (101) near the gallbladder opening, and the groove (101) is matched and buckled with the bottom of the gallbladder opening flange (30).
5. The non-metal inner tank for a water heater according to claim 3, characterized in that: The outer surface of the plastic layer (10) is provided with a fiber reinforcement layer (11) which integrally wraps the plastic layer (10) and the bottom of the gallbladder flange (30) and is used to improve the sealing reliability.
6. A non-metallic inner tank for a water heater according to claim 3, characterized in that: The plastic layer (10) is PB plastic.
7. The non-metal inner tank for a water heater according to claim 1, characterized in that: The flange reinforcement member (40) is provided with a plurality of connection portions (41) on the circumference thereof for increasing the contact area with the top of the vent flange (30), and the connection portion (41) is provided with a plurality of second connection holes (42) for being connected and fixed to the vent flange (30).
8. The non-metal inner tank for a water heater according to claim 1, characterized in that: A plurality of first connection holes (31) for connecting and fixing with the flange reinforcement member (40) are provided on the top of the gallbladder flange (30).
9. The non-metal inner tank for a water heater according to claim 1, characterized in that: The top of the gallbladder flange (30) is also provided with a plurality of through holes (32) for enhancing the connection stability with the flange reinforcement member (40).
10. The non-metal inner tank for a water heater according to claim 1, characterized in that: The annular flange (20) is sleeved in the gallbladder opening flange (30).