A water heater and a water tank thereof

Abstract

The present invention discloses a water tank for a water heater, comprising: an inner tank; an outer shell, which is sleeved on the outer side of the inner tank, and a heat exchange cavity is formed between the outer shell and the inner tank; a heat insulation board, which is arranged in the heat exchange cavity, and an air flow channel is formed between the heat insulation board, the inner tank and the outer shell. In the present invention, the air flow channel formed between the heat insulation board, the inner tank and the outer shell not only effectively reduces the temperature of the surface of the water tank of the water heater, but also enhances the heat insulation effect of the water tank of the water heater, and improves the heat exchange efficiency of the water heater. In addition, the water tank of the water heater has a simple structure, is suitable for industrial production, and is easy to assemble and disassemble. The present invention also discloses a water heater, which is equipped with the water tank of the water heater described above.

Description

Technical Field

[0001] The present invention belongs to the field of household appliances, and in particular relates to a water heater tank and a water heater equipped with the water heater tank. Background Art

[0002] According to their principles, water heaters can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic water heaters, air energy water heaters, heating water heaters, etc. Among them, gas water heaters use gas as fuel and exchange heat with cold water in the heat exchanger through combustion heating to achieve the purpose of providing hot water. They are favored by consumers because of their high thermal efficiency, fast heating speed, large water output, stable temperature, less scale, and ready to use.

[0003] Existing gas water heaters typically consist of a burner and a heat exchanger located above the burner. A water tank is located between the burner and the heat exchanger. A coil of water is wrapped around the outside of the water tank and filled with water. The burner generates heat, which accumulates within the inner cavity and transfers to the coil. The water flowing through the coil absorbs the heat, thereby providing cooling protection. Water tanks are typically made of either pure copper or stainless steel. While pure copper water tanks offer high heat exchange efficiency and low overall weight, they are expensive, hindering product competitiveness. Conversely, stainless steel water tanks, while inexpensive, suffer from low heat exchange efficiency and excessive weight.

[0004] Therefore, under the premise of ensuring the heat exchange efficiency of the gas water heater, how to set up a water tank with a slow surface temperature rise during the heating process to replace the existing winding pipe type pure copper or stainless steel water tank has become a difficult problem that needs to be solved urgently.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a water heater tank to achieve the purpose of reducing the surface temperature of the water tank by forming an air flow channel between the insulation board, the inner tank and the outer shell.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A water heater tank, comprising:

[0009] liner;

[0010] The outer shell is sleeved on the outer side of the inner liner, and a heat exchange cavity is formed between the outer shell and the inner liner;

[0011] The heat insulation board is arranged in the heat exchange cavity, and an air flow channel is formed between the heat insulation board, the inner container and the outer shell.

[0012] Furthermore, the inner liner includes a support plate, and the outer shell includes an end plate. The support plate, the heat insulation plate and the end plate are spaced apart in the same direction. The bottom of the heat insulation plate is connected to the middle of the end plate, and the bottom of the support plate is connected to the bottom of the end plate. A first air flow channel is formed between the heat insulation plate and the end plate, and a second air flow channel is formed between the support plate, the heat insulation plate and the end plate.

[0013] Furthermore, a first air inlet is formed on the upper portion of the heat insulation plate and the upper portion of the end plate, a second air inlet is formed on the upper portion of the support plate and the upper portion of the heat insulation plate, and a first air outlet connected to the first air flow channel and a second air outlet connected to the second air flow channel are respectively opened on the end plate.

[0014] Furthermore, the support plate and the heat insulation plate are respectively connected to the end plate via a plug-in structure, and / or fasteners are sequentially passed through mounting holes provided on the end plate, the heat insulation plate and the support plate to fasten the end plate, the heat insulation plate and the support plate;

[0015] Preferably, the lower ends of the support plate and the heat insulation plate are bent toward the adjacent end plates to form the support plate bottom wall and the heat insulation plate bottom wall, respectively. The support plate bottom wall and the heat insulation plate bottom wall are respectively provided with plug-in walls extending upward, and the end plates are provided with connection holes for the corresponding plug-in walls to pass through.

[0016] Preferably, the left and right ends of the support plate and the insulation plate are bent toward the adjacent end plates to form support plate side walls and insulation plate side walls, respectively. The support plate side walls and the insulation plate side walls are respectively provided with plug-in walls extending radially on opposite sides, and the end plates are provided with connecting holes for the corresponding plug-in walls to pass through.

[0017] Furthermore, the upper portion of the support plate is connected to the upper portion of the heat insulation plate via a plug-in structure, and the upper portion of the heat insulation plate is connected to the middle portion of the end plate via a plug-in structure, and gaps are provided between the support plate and the heat insulation plate, and between the heat insulation plate and the end plate;

[0018] Preferably, an inserting wall that bends and extends downward is provided on the upper portion of the support plate, and a connecting hole for the corresponding inserting wall to pass through is opened on the heat insulation plate;

[0019] Preferably, a plug-in wall that bends and extends downward is provided on the upper portion of the heat insulation plate, and a connecting hole for the corresponding plug-in wall to pass through is opened in the middle portion of the end plate.

[0020] Furthermore, the support plate, the heat insulation plate, and the end plate each include a first inclined portion extending in the same direction, the lower end of the first inclined portion being bent downward and extending to form a first vertical portion; the heat insulation plate also includes a second inclined portion, the upper end of the second inclined portion being connected to the lower end of the first vertical portion of the heat insulation plate, and the lower end of the second inclined portion being connected to the first vertical portion of the end plate via a plug-in structure;

[0021] Preferably, a portion of the lower end of the second inclined portion is bent upward to form an inserting wall, and a connecting hole for the corresponding inserting wall to pass through is opened on the first vertical portion of the end plate;

[0022] More preferably, the end surface of the lower end of the second inclined portion is in contact with the inner side surface of the first vertical portion of the end plate;

[0023] More preferably, the end plate further includes a second vertical portion, the upper end of the first inclined portion of the end plate is integrally connected to the lower end of the second vertical portion, and the upper end of the second vertical portion protrudes from the upper ends of the first inclined portions of the insulation plate and the support plate.

[0024] Furthermore, the lower end of the first vertical portion of the support plate is bent away from the inner tank to form the bottom wall of the support plate, and the lower end of the first vertical portion of the end plate is bent toward the inner shell to form the bottom wall of the end plate, and the end surface of the bottom wall of the support plate is in contact with the end surface of the bottom wall of the end plate.

[0025] Furthermore, the support plate further includes a third inclined portion extending in the same direction as the second inclined portion, the upper end of the third inclined portion being connected to the lower end of the first vertical portion of the support plate, and the lower end of the third inclined portion being connected to the first vertical portion of the end plate via a plug-in structure;

[0026] Preferably, a portion of the lower end of the third inclined portion is bent upward to form an inserting wall, and a connecting hole for the corresponding inserting wall to pass through is opened on the first vertical portion of the end plate;

[0027] More preferably, the end surface of the lower end of the third inclined portion is in contact with the inner side surface of the first vertical portion of the end plate.

[0028] Furthermore, the inner liner, outer shell and heat insulation board are metal parts;

[0029] Preferably, the inner liner, outer shell and heat insulation plate are stainless steel parts or aluminum-plated parts.

[0030] Another object of the present invention is to provide a gas water heater to achieve the purpose of reducing the surface temperature of the water tank.

[0031] The present invention also provides a water heater equipped with any of the above-mentioned water heater tanks.

[0032] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0033] 1. In the present invention, the air flow channel formed between the heat insulation board and the inner tank and the outer shell not only effectively reduces the temperature of the water heater tank surface, but also enhances the heat insulation effect of the water heater tank and improves the heat exchange efficiency of the water heater. In addition, the water heater tank has a simple structure, is suitable for industrial production, and is easy to assemble and disassemble.

[0034] 2. In the present invention, compared with the prior art which uses a water tank made of pure copper or stainless steel with a winding pipe, the surface temperature of the water tank with an air flow channel rises more slowly during the heating process of the water heater, and the air flow channel forms an air interlayer with a heat preservation effect, thereby ensuring the heat exchange efficiency of the water heater.

[0035] 3. In the present invention, the inner tank, outer shell and heat insulation board are made of stainless steel or aluminum-plated parts, which significantly reduces the production cost of the water tank and improves the competitiveness of the product.

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0038] Figure 1 It is a structural schematic diagram of a water tank of a water heater in an embodiment of the present invention;

[0039] Figure 2 This is a front view of a water heater tank according to an embodiment of the present invention;

[0040] Figure 3 yes Figure 2 Cross-sectional view along the AA axis;

[0041] Figure 4 is a side view of a water heater tank according to an embodiment of the present invention;

[0042] Figure 5 yes Figure 4 Cross-sectional view along the BB direction;

[0043] Figure 6 This is an exploded view of a water heater tank in an embodiment of the present invention along a first direction;

[0044] Figure 7 It is an exploded view of a water heater tank along the second direction in an embodiment of the present invention.

[0045] In the picture:

[0046] 1. Inner container; 11. Support plate; 11a. First support plate; 11b. Second support plate; 111. First inclined portion; 112. First vertical portion; 113. Third inclined portion; 114. Support plate bottom wall; 12. Insertion wall; 121. First insertion wall; 122. Second insertion wall;

[0047] 2. Housing; 21. End plate; 21a. First end plate; 21b. Second end plate; 211. First inclined portion; 212. First vertical portion; 213. Second vertical portion; 214. End plate bottom wall;

[0048] 3. Insulation board; 3a. First insulation board; 3b. Second insulation board; 31. First inclined portion; 32. First vertical portion; 33. Second inclined portion; 35. Insertion wall; 351. First insertion wall; 352. Second insertion wall; 353. Third insertion wall;

[0049] 4. Air flow channel; 41. First air flow channel; 42. Second air flow channel;

[0050] 5. Air inlet; 51. First air inlet; 52. Second air inlet;

[0051] 6. Air outlet; 61. First air outlet; 62. Second air outlet;

[0052] 7. Fasteners.

[0053] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "longitudinal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0056] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] like Figures 1 to 7 As shown, an embodiment of the present invention provides a water heater tank, including: an inner tank 1; an outer shell 2, which is sleeved on the outside of the inner tank 1, and a heat exchange cavity is formed between the outer shell 2 and the inner tank 1; an insulation board 3, which is arranged in the heat exchange cavity, and an air flow channel 4 is formed between the insulation board 3 and the inner tank 1 and the outer shell 2.

[0058] In the above scheme, the air flow channel 4 formed between the insulation board 3 and the inner tank 1 and the outer shell 2 not only effectively reduces the temperature of the surface of the water heater tank, but also enhances the insulation effect of the water heater tank and improves the heat exchange efficiency of the water heater. In addition, the water heater tank has a simple structure, is suitable for industrial production, and is easy to assemble and disassemble.

[0059] like Figure 1 、 Figure 3 and Figure 5 As shown, in this embodiment, there is an air inlet 5 between the insulation board 3 and the inner tank 1, and between the insulation board 3 and the outer shell 2, and an air outlet 6 is correspondingly opened on the outer shell 2. Cold air enters the air flow channel 4 from the air inlet 5. In the process of flowing in the air flow channel 4, the cold air absorbs the heat from the surface of the water tank to reduce the surface temperature of the water tank, and finally flows out of the air flow channel 4 from the air outlet 6 correspondingly opened on the outer shell 2.

[0060] like Figure 1 As shown, in this embodiment, the inner liner 1 includes a support plate 11, and the outer shell 2 includes an end plate 21. The support plate 11, the heat insulation plate 3 and the end plate 21 are spaced apart in the same direction. The bottom of the heat insulation plate 3 is connected to the middle of the end plate 21, and the bottom of the support plate 11 is connected to the bottom of the end plate 21. A first air flow channel 41 is formed between the heat insulation plate 3 and the end plate 21, and a second air flow channel 42 is formed between the support plate 11, the heat insulation plate 3 and the end plate 21.

[0061] In the above scheme, the cold air in the second air flow channel 42 isolates the high-temperature gas generated inside the burner and cools the surface of the inner tank 1 and the insulation board 3, while the cold air in the first air flow channel 41 cools the surface of the insulation board 3 and the outer shell 2, thereby ultimately reducing the surface temperature of the water tank.

[0062] like Figure 1 As shown, in this embodiment, a first air inlet 51 is formed on the upper portion of the heat insulation plate 3 and the upper portion of the end plate 21, a second air inlet 52 is formed on the upper portion of the support plate 11 and the upper portion of the heat insulation plate 3, and a first air outlet 61 and a second air outlet 62 communicating with the first air flow channel 41 and the second air flow channel 42 are respectively provided on the end plate 21.

[0063] In the above scheme, air inlets 5 are respectively provided between the upper part of the insulation plate 3 and the upper part of the end plate 21, and between the upper part of the support plate 11 and the upper part of the insulation plate 3, and air outlets 6 are correspondingly provided on the end plate 21. Cold air enters the air flow channel 4 from the air inlet 5 and is finally discharged from the air outlet 6, thereby achieving the purpose of lowering the water tank temperature through air flow.

[0064] In this embodiment, the inner liner 1, the outer shell 2 and the heat insulation board 3 are metal parts; preferably, the inner liner 1, the outer shell 2 and the heat insulation board 3 are stainless steel parts or aluminum-plated parts.

[0065] In the above scheme, compared with the existing winding-tube pure copper water tank or stainless steel water tank, the water tank not only slows down the temperature rise rate of the water tank surface during the heating process while ensuring the heat exchange efficiency of the gas water heater, but also reduces production costs and improves product market competitiveness.

[0066] Through the above-mentioned water heater tank, the air flow channel 4 formed between the insulation board 3 and the inner tank 1 and the outer shell 2 effectively reduces the surface temperature of the water heater tank. The air flow channel 4 is equivalent to an air interlayer, which enhances the insulation effect of the water heater tank and improves the heat exchange efficiency of the water heater. In addition, the water heater tank has a simple structure, is suitable for industrial production, and is easy to assemble and disassemble.

[0067] Example 1

[0068] like Figures 1 to 7 As shown, in this embodiment, a water heater tank is provided, wherein the support plate 11 and the heat insulation plate 3 are connected to the end plate 21 via a plug-in structure, and / or the fasteners 7 pass through the mounting holes provided on the end plate 21, the heat insulation plate 3 and the support plate 11 in sequence to fasten the end plate 21, the heat insulation plate 3 and the support plate 11; preferably, the lower ends of the support plate 11 and the heat insulation plate 3 are bent toward the adjacent end plate 21 to form the support plate bottom wall 114 and the heat insulation plate 3 The bottom wall, the bottom wall 114 of the support plate and the bottom wall of the insulation board 3 are respectively provided with plug-in walls 12 and 35 extending upward, and the end plate 21 is provided with connection holes for the corresponding plug-in walls 12 and 35 to pass through; preferably, the left and right ends of the support plate 11 and the insulation board 3 are respectively bent toward the adjacent end plate 21 to form the side walls of the support plate 11 and the side walls of the insulation board 3, and the side walls of the support plate 11 and the insulation board 3 are respectively provided with plug-in walls 12 and 35 extending radially on the opposite sides, and the end plate 21 is provided with connection holes for the corresponding plug-in walls 12 and 35 to pass through.

[0069] In the above scheme, a second air flow channel 42 is formed between the support plate 11, the insulation plate 3 and the end plate 21. Cold air flows from top to bottom in the second air flow channel 42. The cold air exchanges heat with the water tank and takes away the heat from the surface of the water tank to reduce the temperature of the water tank surface, especially the temperature of the surface of the inner tank 1. In addition, the air interlayer formed in the air flow channel 4 has an insulating effect, thereby ensuring the heat exchange efficiency of the water heater.

[0070] like Figure 6 and Figure 7As shown, in this embodiment, the support plate 11 and the heat insulation plate 3 are respectively connected to the end plate 21 via a plug-in structure, and / or the fasteners 7 are sequentially passed through the mounting holes opened on the end plate 21, the heat insulation plate 3 and the support plate 11 to fasten the end plate 21, the heat insulation plate 3 and the support plate 11; preferably, the lower ends of the support plate 11 and the heat insulation plate 3 are respectively bent toward the adjacent end plate 21 to form a support plate bottom wall 114 and a heat insulation plate 3 bottom wall, and the support plate bottom wall 114 and the heat insulation plate 3 bottom wall are respectively provided with upwardly extending plug-in walls 12 and 35, and the end plate 21 is provided with corresponding plug-in walls 12 and 35. preferably, the left and right ends of the support plate 11 and the insulation plate 3 are bent toward the adjacent end plate 21 to form the side walls of the support plate 11 and the side walls of the insulation plate 3, and the side walls of the support plate 11 and the insulation plate 3 are respectively provided with plug-in walls 12, 35 extending radially on opposite sides, and the end plate 21 is provided with connection holes for the corresponding plug-in walls 12, 35 to pass through.

[0071] In the above scheme, a first air flow channel 41 is formed between the insulation plate 3 and the end plate 21. Cold air flows from top to bottom in the first air flow channel 41. The cold air exchanges heat with the water tank and takes away the heat from the surface of the water tank, so as to reduce the temperature of the surface of the water tank, especially the temperature of the surface of the outer shell 2, thereby ensuring the heat exchange efficiency of the water heater.

[0072] Example 2

[0073] like Figures 1 to 7 As shown, in this embodiment, the difference between this embodiment and the above-mentioned embodiment 1 is that: the support plate 11, the heat insulation plate 3 and the end plate 21 respectively include first inclined portions 111, 31, 211 extending in the same direction, and the lower ends of the first inclined portions 111, 31, 211 are bent downward to extend to form first vertical portions 112, 32, 212; the heat insulation plate 3 also includes a second inclined portion 33, the upper end of the second inclined portion 33 is connected to the lower end of the first vertical portion 32 of the heat insulation plate 3, and the lower end of the second inclined portion 33 is connected to the first vertical portion 212 of the end plate 21 through a plug-in structure; preferably, a part of the lower end of the second inclined portion 33 is bent upward to form a plug-in wall 35, and the first vertical portion 212 of the end plate 21 is bent downward to form a plug-in wall A connecting hole is provided on it for the corresponding plug-in wall 35 to pass through; more preferably, the end surface of the lower end of the second inclined portion 33 is in contact with the inner side surface of the first vertical portion 212 of the end plate 21; more preferably, the end plate 21 also includes a second vertical portion 213, and the upper end of the first inclined portion 211 of the end plate 21 is integrally connected to the lower end of the second vertical portion 213, and the upper end of the second vertical portion 213 protrudes from the upper ends of the first inclined portions 31 and 111 of the insulation board 3 and the support plate 11.

[0074] In the above scheme, because the support plate 11, the insulation plate 3 and the end plate 21 respectively have inclined portions, when the cold air enters the air flow channel 4 from the air inlet 5, the air absorbs the heat from the surface of the water tank. Especially in the process of downward movement, the collision between the air and the inclined portion can quickly reduce the surface temperature of the water tank.

[0075] like Figure 3 and Figures 5 to 7 As shown, in this embodiment, the lower end of the first vertical portion 112 of the support plate 11 is bent away from the interior of the inner tank 1 to form a support plate bottom wall 114, and the lower end of the first vertical portion 212 of the end plate 21 is bent toward the interior of the outer shell 2 to form an end plate bottom wall 214, and the end surface of the support plate bottom wall 114 is in contact with the end surface of the end plate bottom wall 214.

[0076] In the above scheme, the end surface of the support plate bottom wall 114 is formed by fitting with the end surface of the end plate bottom wall 214, and the support plate 11, the insulation plate 3 and the end plate 21 define a second air flow channel 42 to enable cold air to enter the second air flow channel 42 from the second air inlet 52 and flow downward, and finally flow out from the second air outlet 62 opened on the end plate 21.

[0077] Example 3

[0078] like Figures 1 to 7 As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that: the support plate 11 further includes a third inclined portion 113 extending in the same direction as the second inclined portion 33, the upper end of the third inclined portion 113 is connected to the lower end of the first vertical portion 112 of the support plate 11, and the lower end of the third inclined portion 113 is connected to the first vertical portion 212 of the end plate 21 via a plug-in structure; preferably, a partial area of ​​the lower end of the third inclined portion 113 is bent upward to form a plug-in wall 35, and a connecting hole for the corresponding plug-in wall 35 to pass through is provided on the first vertical portion 212 of the end plate 21; more preferably, the end face of the lower end of the third inclined portion 113 is in contact with the inner side face of the first vertical portion 212 of the end plate 21.

[0079] In the above scheme, the lower part of the support plate 11 is connected to the lower part of the end plate 21 through a plug-in structure, and the support plate 11, the insulation plate 3 and the end plate 21 define a second air flow channel 42 to enable cold air to enter the second air flow channel 42 from the second air inlet 52 and flow downward, and finally flow out from the second air outlet 62 opened on the end plate 21.

[0080] Example 4

[0081] like Figures 1 to 7As shown, the difference between this embodiment and the above-mentioned embodiment 1 is that: the support plate 11 includes a first support plate 11a and a second support plate 11b, the thermal insulation plate 3 includes a first thermal insulation plate 3a and a second thermal insulation plate 3b, and the end plate 21 includes a first end plate 21a and a second end plate 21b, wherein the first support plate 11a, the first thermal insulation plate 3a and the first end plate 21a are arranged at intervals along the first direction, and the second support plate 11b, the second thermal insulation plate 3b and the second end plate 21b are arranged at intervals along the second direction, and the first direction and the second direction are arranged perpendicularly.

[0082] like Figure 2 and Figure 3 As shown, in this embodiment, the first support plate 11a, the first heat insulation plate 3a and the first end plate 21a respectively include first inclined portions 111, 31, 211 extending along the first direction, and the lower ends of the first inclined portions 111, 31, 211 are bent downward to form first vertical portions 112, 32, 212; the first heat insulation plate 3a also includes a second inclined portion 33, the upper end of the second inclined portion 33 is connected to the lower end of the first vertical portion 32 of the first heat insulation plate 3a, and the lower end of the second inclined portion 33 is connected to the first vertical portion 212 of the first end plate 21a via a plug-in structure; preferably, a portion of the lower end of the second inclined portion 33 is bent upward to form a first plug-in wall 351, and the first vertical portion 212 of the first end plate 21a is bent downward to form a first plug-in wall 351. A connecting hole is provided on it for the first plug-in wall 351 to pass through; more preferably, the end surface of the lower end of the second inclined portion 33 is in contact with the inner side surface of the first vertical portion 212 of the first end plate 21a; more preferably, the first end plate 21a also includes a second vertical portion 213, and the upper end of the first inclined portion 211 of the second end plate 21b is integrally connected to the lower end of the second vertical portion 213, and the upper end of the second vertical portion 213 protrudes from the upper end of the first inclined portion 211 of the first heat insulation plate 3a and the first support plate 11a.

[0083] like Figure 2 、 Figure 3 and Figure 6 As shown, in this embodiment, the first inclined portion 31 of the first heat insulation plate 3a and the two ends of the first inclined portion 111 of the first support plate 11a are respectively bent horizontally toward the adjacent first end plate 21a to form flanges, and a plurality of second plug-in walls 352 and 122 extending radially toward opposite sides are respectively provided on the flanges of the first heat insulation plate 3a and the flanges of the first support plate 11a, and corresponding connecting holes are provided on the first vertical portion 212 of the first end plate 21a for plugging and installing the second plug-in walls 352 provided on the first heat insulation plate 3a and the second plug-in walls 352 provided on the first support plate 11a.

[0084] like Figure 2 、 Figure 3 and Figure 6As shown, in this embodiment, a notch is provided at the end of the first inclined portion 111 of the first support plate 11a, and the first support plate 11a at the edge of the notch is bent downward to form a third plug-in wall 353, and a connecting hole is provided on the third inclined portion of the first insulation board 3a for plugging in the third plug-in wall 353 provided on the first support plate 11a.

[0085] like Figure 4 、 Figure 5 and Figure 7 As shown, in this embodiment, the second support plate 11b, the second heat insulation plate 3b and the second end plate 21b respectively include first inclined portions 111 spaced apart along the second direction, the lower ends of the first inclined portions 111 are bent downward to extend to form first vertical portions 112; the second heat insulation plate 3b also includes a second inclined portion 33, the upper end of the second inclined portion 33 is connected to the lower end of the first vertical portion 32 of the second heat insulation plate 3b, and the lower end of the second inclined portion 33 is connected to the first vertical portion 212 of the second end plate 21b via a plug-in structure; preferably, a portion of the lower end of the second inclined portion 33 is bent upward to form The first plug-in wall 351 and the first vertical portion 212 of the second end plate 21b are provided with a connecting hole for the first plug-in wall 351 to pass through; more preferably, the end surface of the lower end of the second inclined portion 33 is in contact with the inner side surface of the first vertical portion 212 of the second end plate 21b; more preferably, the second end plate 21b also includes a second vertical portion 213, the upper end of the first inclined portion 211 of the second end plate 21b is integrally connected with the lower end of the second vertical portion 213, and the upper end of the second vertical portion 213 protrudes from the upper ends of the first inclined portions 31 and 111 of the second heat insulation plate 3b and the second support plate 11b.

[0086] like Figure 4 、 Figure 5 and Figure 7 As shown, in this embodiment, the two ends of the first inclined portion 31 of the second heat insulation plate 3b and the first inclined portion 111 of the second support plate 11b are respectively bent horizontally toward the adjacent second end plate 21b to form flanges, and a plurality of second plug-in walls 352 and 122 extending radially toward opposite sides are respectively provided on the flanges of the second heat insulation plate 3b and the second support plate 11b, and corresponding connecting holes are opened on the first vertical portion 212 of the second end plate 21b for plugging and installing the second plug-in walls 352 provided on the second heat insulation plate 3b and the second plug-in walls 122 provided on the second support plate 11b.

[0087] like Figure 4 、 Figure 5 and Figure 7 As shown, in this embodiment, a notch is provided at the end of the first inclined portion 111 of the second support plate 11b, and the second support plate 11b at the edge of the notch is bent downward to form a third plug-in wall (not shown in the figure), and a connecting hole is provided on the second inclined portion of the second insulation board 3b for plugging in the third plug-in wall provided on the second support plate 11b.

[0088] In the above scheme, because the support plate 11, the insulation plate 3 and the end plate 21 respectively have inclined portions, when the cold air enters the air flow channel 4 from the air inlet 5, the air absorbs the heat from the surface of the water tank. Especially in the process of downward movement, the collision between the air and the inclined portion can quickly reduce the surface temperature of the water tank.

[0089] like Figure 4 、 Figure 5 and Figure 7 As shown, in this embodiment, the lower end of the first vertical portion 112 of the second support plate 11b is bent away from the interior of the inner tank 1 to form the bottom wall of the second support plate 11b, and the lower end of the first vertical portion 212 of the second end plate 21b is bent toward the interior of the outer shell 2 to form the bottom wall of the second end plate 21b, and the end surface of the bottom wall of the second support plate 11b is in contact with the end surface of the bottom wall of the second end plate 21b.

[0090] In the above scheme, the end surface of the support plate bottom wall 114 is formed by fitting with the end surface of the end plate bottom wall 214, and the support plate 11, the insulation plate 3 and the end plate 21 define a second air flow channel 42, so that the cold air enters the second air flow channel 42 from the second air inlet 52 and flows downward, and finally flows out from the second air outlet 62 opened on the end plate 21.

[0091] like Figure 2 、 Figure 3 and Figure 6 As shown, in this embodiment, the first support plate 11a also includes a third inclined portion 113 extending in the same direction as the second inclined portion 33, the upper end of the third inclined portion 113 is connected to the lower end of the first vertical portion 112 of the first support plate 11a, and the lower end of the third inclined portion 113 is connected to the first vertical portion 212 of the first end plate 21a via a plug-in structure; preferably, a partial area of ​​the lower end of the third inclined portion 113 is bent upward to form a first plug-in wall 121, and a connecting hole for the first plug-in wall 121 to pass through is provided on the first vertical portion 212 of the first end plate 21a; more preferably, the end surface of the lower end of the third inclined portion 113 is in contact with the inner side surface of the first vertical portion 212 of the first end plate 21a.

[0092] In the above scheme, the lower part of the support plate 11 is connected to the lower part of the end plate 21 through a plug-in structure, and the support plate 11, the insulation plate 3 and the end plate 21 define a second air flow channel 42 to enable cold air to enter the second air flow channel 42 from the second air inlet 52 and flow downward, and finally flow out from the second air outlet 62 opened on the end plate 21.

[0093] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A water heater tank, characterized in that: include: An inner tank, including a support plate; An outer shell is sleeved on the outer side of the inner shell, a heat exchange cavity is formed between the outer shell and the inner shell, and the outer shell includes an end plate; A heat insulation board is arranged in the heat exchange cavity, and an air flow channel is formed between the heat insulation board, the inner tank and the outer shell; The support plate, the heat insulation plate and the end plate are arranged at intervals in the same direction, the bottom of the heat insulation plate is connected to the middle of the end plate, the bottom of the support plate is connected to the bottom of the end plate, a first air flow channel is formed between the heat insulation plate and the end plate, and a second air flow channel is formed between the support plate, the heat insulation plate and the end plate; A first air inlet is formed on the upper part of the heat insulation plate and the upper part of the end plate, a second air inlet is formed on the upper part of the support plate and the upper part of the heat insulation plate, and a first air outlet hole communicating with the first air flow channel and a second air outlet hole communicating with the second air flow channel are respectively opened on the end plate; The support plate, the heat insulation plate and the end plate respectively include a first inclined portion extending in the same direction, the lower end of the first inclined portion is bent downward and extended to form a first vertical portion; the heat insulation plate also includes a second inclined portion, the upper end of the second inclined portion is connected to the lower end of the first vertical portion of the heat insulation plate, and the lower end of the second inclined portion is connected to the first vertical portion of the end plate via a plug-in structure; A portion of the lower end of the second inclined portion is bent upward to form an insertion wall, and a connecting hole for the corresponding insertion wall to pass through is provided on the first vertical portion of the end plate; The end surface of the lower end of the second inclined portion is in contact with the inner side surface of the first vertical portion of the end plate; The end plate further includes a second vertical portion, the upper end of the first inclined portion of the end plate is integrally connected with the lower end of the second vertical portion, and the upper end of the second vertical portion protrudes from the upper ends of the first inclined portions of the insulation plate and the support plate.

2. A water heater tank according to claim 1, characterized in that: The support plate and the heat insulation plate are respectively connected to the end plate via the plug-in structure, and / or the fasteners pass through the mounting holes provided on the end plate, the heat insulation plate and the support plate in sequence to fasten the end plate, the heat insulation plate and the support plate.

3. A water heater tank according to claim 2, characterized in that: The lower ends of the support plate and the heat insulation plate are bent toward the adjacent end plates to form the support plate bottom wall and the heat insulation plate bottom wall, respectively. The support plate bottom wall and the heat insulation plate bottom wall are respectively provided with plug-in walls extending upward, and the end plates are provided with connection holes for the corresponding plug-in walls to pass through; The left and right ends of the support plate and the insulation plate are bent toward the adjacent end plates to form support plate side walls and insulation plate side walls, respectively. The support plate side walls and insulation plate side walls are respectively provided with plug-in walls extending radially on opposite sides, and the end plates are provided with connecting holes for the corresponding plug-in walls to pass through.

4. A water heater tank according to claim 3, characterized in that: The upper part of the support plate is connected to the upper part of the heat insulation plate through the plug-in structure, and the upper part of the heat insulation plate is connected to the middle part of the end plate through the plug-in structure. There are gaps between the support plate and the heat insulation plate, and between the heat insulation plate and the end plate.

5. A water heater tank according to claim 4, characterized in that: The upper part of the support plate is provided with a plug-in wall that bends and extends downward, and the heat insulation plate is provided with a connection hole for the corresponding plug-in wall to pass through; An inserting wall which bends and extends downward is arranged on the upper part of the heat insulation plate, and a connecting hole for the corresponding inserting wall to pass through is opened in the middle part of the end plate.

6. A water heater tank according to any one of claims 1 to 5, characterized in that: The lower end of the first vertical portion of the support plate is bent away from the inner tank to form a support plate bottom wall, and the lower end of the first vertical portion of the end plate is bent toward the inner shell to form an end plate bottom wall, and the end surface of the support plate bottom wall is in contact with the end surface of the end plate bottom wall.

7. A water heater tank according to any one of claims 1 to 5, characterized in that: The support plate also includes a third inclined portion extending in the same direction as the second inclined portion, the upper end of the third inclined portion is connected to the lower end of the first vertical portion of the support plate, and the lower end of the third inclined portion is connected to the first vertical portion of the end plate via a plug-in structure.

8. A water heater tank according to claim 7, characterized in that: A portion of the lower end of the third inclined portion is bent upward to form an insertion wall, and a connection hole for the corresponding insertion wall to pass through is provided on the first vertical portion of the end plate; The end surface of the lower end of the third inclined portion is in contact with the inner side surface of the first vertical portion of the end plate.

9. A water heater tank according to any one of claims 1 to 5, characterized in that: The inner container, the outer shell and the heat insulation board are metal parts.

10. A water heater tank according to claim 9, characterized in that: The inner container, outer shell and heat insulation board are stainless steel parts or aluminum-plated parts.

11. A water heater, characterized in that: A water heater tank according to any one of claims 1 to 10 is installed.

Images