Water tank of water heater

Abstract

The utility model belongs to the technical field of water heaters and discloses a water tank of a water heater, which comprises an inner container, a heating device, a water inlet pipe and a water outlet pipe. The heating device is used for heating water in the inner container; the water inlet pipe is fixedly arranged on the inner container, the first end of the water inlet pipe extends into the inner container, the second end of the water inlet pipe is arranged outside the inner container and used for being communicated with an external water source, and the external water source can input water into the inner container through the water inlet pipe; the water outlet pipe is fixedly arranged on the inner container, the first end of the water outlet pipe extends into the inner container and is located on the upper portion of the inner container, the second end of the water outlet pipe is arranged outside the inner container, and a cavity is formed in the pipe wall of the water outlet pipe and can prevent hot water in the water outlet pipe from exchanging heat with cold water on the lower portion of the inner container. The cavity is formed in the pipe wall of the water outlet pipe of the water tank of the water heater, so that hot water in the water outlet pipe cannot exchange heat with cold water on the lower portion of the inner container, the temperature of the hot water is effectively prevented from being gradually reduced when the hot water flows out, and user experience is improved.

Description

Technical Field

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

[0002] The water outlet pipe of the existing wall-mounted water heater water tank generally penetrates from the water outlet at the bottom of the water tank inner tank and extends to the upper part of the water tank inner tank to ensure that the hot water located at the upper part of the water tank inner tank can be discharged through the water outlet pipe. In the actual water use process, cold water enters the water tank inner tank through the water inlet pipe and forms a cold water zone at the lower part of the water tank inner tank. When the hot water at the upper part of the water tank inner tank is discharged from the water outlet pipe, the hot water exchanges heat with the cold water in the cold water zone through the pipe wall of the water outlet pipe, resulting in a gradual decrease in the temperature of the hot water discharged through the water outlet pipe, which reduces the user experience. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a water tank for a water heater, which can effectively prevent the temperature of hot water from gradually decreasing when the hot water is discharged through a water outlet pipe, thereby improving the user experience.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] Water heater tank, including:

[0006] Liner;

[0007] The water outlet pipe is fixedly arranged on the inner tank, the first end of the water outlet pipe extends into the inner tank and is located at the upper part of the inner tank, the second end of the water outlet pipe is arranged outside the inner tank, and the pipe wall of the water outlet pipe is provided with a cavity.

[0008] Compared with the background technology, the water tank of the water heater described in the utility model has the following beneficial effects:

[0009] The utility model provides a water tank of a water heater, in which a cavity is arranged on the pipe wall of a water outlet pipe so that the hot water in the water outlet pipe cannot exchange heat with the cold water in the lower part of the inner tank, thereby effectively preventing the temperature of the hot water from gradually decreasing when the hot water flows out, thereby improving the user experience.

[0010] In one of the embodiments, the water outlet pipe includes at least two pipe fittings which are sequentially sleeved, and there is a gap between any two adjacent pipe fittings, and along the axial direction of the water outlet pipe, both ends of the gap are closed to form the cavity.

[0011] In one of the embodiments, the water outlet pipe further includes a sealing member, and both ends of the gap are closed by the sealing member.

[0012] In one embodiment, the sealing member includes an annular limiting portion and an annular embedding portion which are connected to each other, the annular embedding portion can be embedded in the gap, and the annular limiting portion can be limited and abutted against the end of the pipe.

[0013] In one embodiment, any two adjacent pipes are welded or bonded at both ends of the gap to close both ends of the gap.

[0014] In one embodiment, there are two pipe fittings, and both ends of the pipe fittings located in the outer layer are provided with contraction parts, the inner wall of the contraction part is in contact with the outer wall of the pipe fittings located in the inner layer, and the contraction part is welded or bonded to the pipe fittings located in the inner layer.

[0015] In one embodiment, the end surface of the second end of the water outlet pipe is provided with at least one annular groove which does not penetrate the end surface of the first end of the water outlet pipe, and the notch of the annular groove is provided with a sealing member to close the annular groove to form the cavity.

[0016] In one embodiment, the water outlet pipe and the blocking member are both stamped parts or cast parts.

[0017] In one of the embodiments, the cavity includes a plurality of groups of sub-cavities spaced apart along the axial direction of the water outlet pipe, and a plurality of the sub-cavities in each group of the sub-cavities are circumferentially distributed around the axial direction of the water outlet pipe.

[0018] In one of the embodiments, the water outlet pipe is made of foam aluminum profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a water tank of a water heater provided in Embodiment 1 of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a water outlet pipe involved in Embodiment 1 of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of a sealing member involved in Embodiment 1 of the present utility model;

[0022] Figure 4 It is a structural schematic diagram of the water outlet pipe involved in the second embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the water outlet pipe involved in the third embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of a water outlet pipe involved in the fourth embodiment of the utility model;

[0025] Figure 7 yes Figure 6 Top view of the .

[0026] In the figure:

[0027] 1. Inner tank; 2. Heating device; 3. Water inlet pipe; 4. Water outlet pipe; 41. Pipe fitting; 411. Contraction portion; 42. Gap; 43. Sealing member; 431. Annular limiting portion; 432. Annular embedding portion; 44. Annular groove; 45. Blocking member; 46. Sub-cavity. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0032] Embodiment 1

[0033] like Figure 1-Figure 3As shown, the embodiment of the utility model provides a water tank of a water heater, which includes an inner tank 1, a heating device 2, a water inlet pipe 3 and a water outlet pipe 4. The inner tank 1 is used to contain water; the heating device 2 is used to heat the water in the inner tank 1; the water inlet pipe 3 is fixedly arranged on the inner tank 1, and the first end of the water inlet pipe 3 extends into the inner tank 1, and the second end of the water inlet pipe 3 is arranged outside the inner tank 1 and is used to communicate with an external water source, and the external water source can input water into the inner tank 1 through the water inlet pipe 3; the water outlet pipe 4 is fixedly arranged on the inner tank 1, and the first end of the water outlet pipe 4 extends into the inner tank 1 and is located at the upper part of the inner tank 1, and the second end of the water outlet pipe 4 is arranged outside the inner tank 1. After the water in the inner tank 1 is heated into hot water by the heating device 2, it is discharged to the outside of the inner tank 1 through the central channel of the water outlet pipe 4, and the pipe wall of the water outlet pipe 4 is provided with a cavity, and the cavity can prevent the hot water in the central channel from exchanging heat with the cold water at the bottom of the inner tank 1.

[0034] The water outlet pipe 4 in the water tank of the water heater has a cavity in its pipe wall so that the hot water in the central channel cannot exchange heat with the cold water in the lower part of the inner tank 1, effectively preventing the temperature of the hot water from gradually decreasing when the hot water flows out through the central channel, thereby improving the user experience.

[0035] Optionally, the heating device 2 includes but is not limited to an electric heater, a gas heater, a heat pump heater, a solar heater or a multi-energy combination heater, as long as it can heat the water in the inner tank 1 into hot water. The heating device 2 can be installed inside or outside the inner tank 1, and the installation position can be the lower part, the middle part or the upper part of the inner tank 1, which is not limited here.

[0036] The inner tank 1 can be installed vertically, horizontally or inclined, and its shape can be round, square or other shapes.

[0037] The material of the water outlet pipe 4 can be metal, plastic or other materials.

[0038] like Figure 2-Figure 3 As shown, the water outlet pipe 4 includes at least two pipe fittings 41 which are sequentially sleeved, and there is a gap 42 between any two adjacent pipe fittings 41, and along the axial direction of the water outlet pipe 4, both ends of the gap 42 are closed to form a cavity, and the structure is simple and the processing cost is low. The pipe fittings 41 can be provided with two, three or more. Now, taking the water outlet pipe 4 formed by two pipe fittings 41 as an example, the two pipe fittings 41 are sleeved with each other to form a double-layer tube, and the pipe fitting 41 located in the inner layer has a central channel, and there is a gap 42 between the pipe fitting 41 located in the outer layer and the pipe fitting 41 located in the inner layer. The outer pipe fitting 41 and the inner pipe fitting 41 are separated by the gap 42, which blocks the heat transfer between the outer pipe fitting 41 and the inner pipe fitting 41, and the gap 42 between the two pipe fittings 41 is uniform; in addition, the two ends of the gap 42 are closed to form a cavity, which can effectively prevent the water in the inner tank 1 from entering the cavity, and ensure the use effect.

[0039] Further, refer to Figure 3 The water outlet pipe 4 also includes a sealing member 43. Along the axial direction of the water outlet pipe 4, both ends of the gap 42 are closed by the sealing member 43, and the operation is simple and convenient.

[0040] The seal 43 includes an annular limiting portion 431 and an annular embedding portion 432 connected to each other. The annular embedding portion 432 can be embedded in the gap 42, and the annular limiting portion 431 can be limited to the end of the pipe 41. If the annular limiting portion 431 extends radially outwardly along the outlet pipe 4, the annular limiting portion 431 is limited to the end of the outer layer of the two adjacent pipes 41. If the annular limiting portion 431 extends radially inwardly along the outlet pipe 4, the annular limiting portion 431 is limited to the end of the inner layer of the two adjacent pipes 41. When installing the seal 43 structure, the annular embedding portion 432 can be directly embedded in the gap 42 to complete the sealing, and the seal 43 can effectively prevent the water in the inner liner 1 from entering the cavity.

[0041] The sealing member 43 has a flexible characteristic so as to avoid thermal expansion and contraction when the sealing member 43 blocks the gap 42 and causes sealing failure.

[0042] Embodiment 2

[0043] The water tank of a water heater provided in this embodiment has a structure that is substantially the same as that of the first embodiment. For the sake of convenience, only the differences are described.

[0044] The difference is that, referring to Figure 4 Any two adjacent pipe fittings 41 among the plurality of pipe fittings 41 can also be welded or bonded at both ends of the gap 42 to seal both ends of the gap 42. The gap 42 is sealed by welding or bonding to form a cavity, and the sealing effect is firm and reliable, which avoids the failure of the cavity insulation caused by damage due to long-term use. In addition, the cavity can also be evacuated by welding or bonding, and the air insulation in the cavity is converted into vacuum insulation, which has a better insulation effect.

[0045] Taking a double-layer tube composed of two pipe fittings 41 as an example, both ends of the outer pipe fitting 41 are provided with a contraction portion 411, and the inner wall of the contraction portion 411 is fitted with the outer wall of the inner pipe fitting 41, and the contraction portion 411 is welded or bonded to the outer wall of the inner pipe fitting 41 to make the processing technology simpler.

[0046] Embodiment 3

[0047] The water tank of a water heater provided in this embodiment has a structure that is substantially the same as that of the first embodiment. For the sake of convenience, only the differences are described.

[0048] The difference is that the water outlet pipe 4 can be manufactured by stamping or casting. Figure 5 As shown, the end face of the second end of the water outlet pipe 4 is provided with at least one annular groove 44 which does not penetrate the end face of the first end of the water outlet pipe 4, and the notch of the annular groove 44 is provided with a plugging member 45 to close the annular groove 44 to form a cavity. In this structure, the annular groove 44 is provided between the inner wall and the outer wall of the water outlet pipe 4, and does not penetrate the end face of the first end of the water outlet pipe 4, so that the first end of the water outlet pipe 4 located in the inner liner 1 can achieve reliable sealing without any sealing operation, thereby reducing the production cost. The second end of the water outlet pipe 4 is blocked by the plugging member 45. Since the second end of the water outlet pipe 4 is located outside the inner liner 1, it does not need to be waterproofed, which can effectively reduce the difficulty of designing and installing the plugging member 45.

[0049] When a plurality of annular grooves 44 are provided, the plurality of annular grooves 44 are arranged in sequence from the inside to the outside, and the plurality of annular grooves 44 can be respectively blocked by a plurality of blocking members 45 , thereby improving the heat insulation effect.

[0050] The water outlet pipe 4 and the plugging member 45 are both stamped parts or cast parts. The water outlet pipe 4 can be integrally formed by stamping or casting, and the plugging member 45 can also be integrally formed by stamping or casting, which greatly simplifies the production process and improves production efficiency.

[0051] Embodiment 4

[0052] The water tank of a water heater provided in this embodiment has a structure that is substantially the same as that of the first embodiment. For the sake of convenience, only the differences are described.

[0053] The difference is that the water outlet pipe 4 can be made of foamed aluminum profile. Figure 6-Figure 7 As shown, the cavity includes multiple groups of sub-cavities 46, and the multiple groups of sub-cavities 46 are spaced apart along the axial direction of the water outlet pipe 4, and the multiple sub-cavities 46 in each group of sub-cavities 46 are distributed circumferentially around the axial direction of the water outlet pipe 4, thereby reducing the heat transfer area between the side wall of the central channel of the water outlet pipe 4 and the outer wall of the water outlet pipe 4, and this structure has no hidden danger of cavity water ingress failure.

[0054] Specifically, the water outlet pipe 4 is made of foam aluminum profile, and a central channel is opened in the center thereof. A foam layer with a sub-cavity 46 is distributed between the central channel and the outer wall of the water outlet pipe 4. The processing procedure is simple and suitable for large-scale batch production.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A water heater tank, characterized in that: include: Liner (1); A water outlet pipe (4) is fixedly arranged on the inner liner (1), a first end of the water outlet pipe (4) extends into the inner liner (1) and is located at the upper part of the inner liner (1), a second end of the water outlet pipe (4) is arranged outside the inner liner (1), and a cavity is arranged on the wall of the water outlet pipe (4).

2. The water heater tank according to claim 1, characterized in that: The water outlet pipe (4) comprises at least two pipe fittings (41) which are arranged in sequence, and a gap (42) is provided between any two adjacent pipe fittings (41), and along the axial direction of the water outlet pipe (4), both ends of the gap (42) are closed to form the cavity.

3. The water heater tank according to claim 2, characterized in that: The water outlet pipe (4) further comprises a sealing member (43), and both ends of the gap (42) are closed by the sealing member (43).

4. The water heater tank according to claim 3, characterized in that: The sealing member (43) comprises an annular limiting portion (431) and an annular embedding portion (432) which are connected to each other, wherein the annular embedding portion (432) can be embedded in the gap (42), and the annular limiting portion (431) can be limitedly abutted against the end of the pipe member (41).

5. The water heater tank according to claim 2, characterized in that: Any two adjacent pipes (41) are welded or bonded at both ends of the gap (42) so that both ends of the gap (42) are closed.

6. The water heater tank according to claim 5, characterized in that: The number of the pipe fittings (41) is two, and both ends of the pipe fitting (41) located in the outer layer are provided with contraction parts (411), the inner wall of the contraction part (411) is in contact with the outer wall of the pipe fitting (41) located in the inner layer, and the contraction part (411) is welded or bonded to the pipe fitting (41) located in the inner layer.

7. The water heater tank according to claim 1, characterized in that: The end surface of the second end of the water outlet pipe (4) is provided with at least one annular groove (44) which does not penetrate the end surface of the first end of the water outlet pipe (4), and a sealing member (45) is provided at the notch of the annular groove (44) to close the annular groove (44) to form the cavity.

8. The water heater tank according to claim 7, characterized in that: The water outlet pipe (4) and the blocking member (45) are both stamped parts or cast parts.

9. The water heater tank according to claim 1, characterized in that: The cavity comprises a plurality of groups of sub-cavities (46) spaced apart and distributed along the axial direction of the water outlet pipe (4), and a plurality of the sub-cavities (46) in each group of the sub-cavities (46) are circumferentially distributed around the axial direction of the water outlet pipe (4).

10. The water heater tank according to claim 9, characterized in that: The water outlet pipe (4) is made of foamed aluminum profile.

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