Water heater shell structure and water heater

Abstract

The utility model discloses a water heater shell structure and a water heater. The water heater shell structure comprises a barrel and an end cover, an opening is formed in the end of the barrel, the end cover covers the opening, a rotary clamping groove is formed in one of the barrel and the end cover, a rotary buckle is arranged on the other one of the barrel and the end cover, and the rotary clamping groove comprises an entering section and a clamping section which are communicated with each other at an included angle. The rotary buckle can be clamped into the entering section and can rotate into the clamping section to achieve clamping. According to the water heater shell structure, the barrel and the end cover are rotationally clamped through the rotary clamping groove and the rotary buckle, and the rotary clamping mode is simple in assembling mode, high in assembling efficiency, not prone to disengagement after being assembled and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a shell structure of a water heater and a water heater. Background Art

[0002] The shell of the existing split-type heat pump water heater includes a metal cylinder and a metal end cap formed by rolling a metal color plate. The metal color plate is buckled by overlapping and pressing on both sides when rolling, and the metal cylinder formed after rolling and the metal end cap are interference-fitted by a pre-pressed structure. However, since the metal cylinder needs to be pre-pressed before being buckled with the metal end cap, the buckling structure formed by rolling is easily expanded during the pressing process, and when the metal cylinder and the metal end cap are buckled, the matching size of the metal end cap closing and the metal cylinder pressing needs to be adjusted multiple times. The window of suitable size for assembly is very small and there are production errors, and it is impossible to ensure that the status of each batch is the same.

[0003] Therefore, how to provide a shell structure and a water heater that are easy to assemble and have high stability after assembly is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The first object of the utility model is to provide a water heater shell structure, the cylinder and the end cover of the water heater shell structure are easy to assemble and have high stability after assembly.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A water heater shell structure comprises: a cylinder, an opening is formed at the end of the cylinder; an end cover, the end cover is arranged at the opening; wherein, a rotation slot is arranged on one of the cylinder and the end cover, and a rotation buckle is arranged on the other, the rotation slot comprises an entry section and a connection section connected at an angle, the rotation buckle can be inserted into the entry section, and can be rotated into the connection section to achieve connection.

[0007] Preferably, the cylinder is formed by winding a plate, and the plate includes two overlapping ends arranged opposite to each other, and the two overlapping ends are overlapped and fixed to form an overlapping structure.

[0008] Preferably, the overlapping width a of the two overlapping ends is 10 mm-25 mm.

[0009] Preferably, the two overlapping ends are ultrasonically welded or heat-melt welded.

[0010] Preferably, a first connecting hole is provided on the overlapping structure, and a second connecting hole is provided on the end cover, and a connecting member is passed through the first connecting hole and the second connecting hole to connect the overlapping structure and the end cover.

[0011] Preferably, the plate is a plastic plate, and the thickness of the plastic plate is 1.5 mm-3 mm.

[0012] Preferably, the number of the rotating slots and the number of the rotating buckles are both multiple and are arranged in one-to-one correspondence.

[0013] Preferably, the entry section and the engaging section are connected in an L-shape; or, the entry section and the engaging section are connected in a T-shape.

[0014] Preferably, an opening is formed at each of the two ends of the cylinder, and the end cover comprises a first end cover and a second end cover, the first end cover is arranged at one of the openings, and the second end cover is arranged at the other opening.

[0015] The second object of the utility model is to provide a water heater, the shell structure of which is not only easy to assemble but also has high stability after assembly.

[0016] To achieve this purpose, the utility model adopts the following technical solutions:

[0017] A water heater comprises an inner tank and the above-mentioned water heater shell structure, wherein the inner tank is placed in the water heater shell structure.

[0018] Beneficial effects of the utility model:

[0019] The water heater shell structure provided by the utility model comprises a cylinder and an end cover, an opening is formed at the end of the cylinder, the end cover is arranged at the opening, a rotating slot is arranged on one of the cylinder and the end cover, and a rotating buckle is arranged on the other, the rotating slot comprises an entry section and a clamping section connected at an angle, the rotating buckle can be clamped into the entry section, and can be rotated into the clamping section to achieve clamping. The cylinder and the end cover of the water heater shell structure are rotatably clamped by the rotating slot and the rotating buckle, and the rotating clamping method is not only simple in assembly method and high in assembly efficiency, but also not easy to be disengaged after assembly, and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the shell structure of the water heater provided by the embodiment of the utility model at a certain viewing angle;

[0021] Figure 2 is a schematic diagram of the shell structure of the water heater provided by the embodiment of the utility model at another viewing angle;

[0022] Figure 3 It is a schematic diagram of a shell structure cylinder of a water heater provided by an embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A magnified view of part A;

[0024] Figure 5 yes Figure 3 A magnified view of part B;

[0025] Figure 6 is a schematic diagram of a first end cover provided by an embodiment of the utility model at a certain viewing angle;

[0026] Figure 7 is a schematic diagram of the first end cover provided by an embodiment of the utility model at another viewing angle;

[0027] Figure 8 is a schematic diagram of the second end cover provided by an embodiment of the utility model at a certain viewing angle;

[0028] Fig. 9 is a schematic diagram of the second end cover provided by an embodiment of the utility model at another viewing angle;

[0029] Fig.10 yes Fig. 9 Magnified view of part C.

[0030] In the figure:

[0031] 100, cylinder; 110, opening; 120, rotation slot; 121, entry section; 122, clamping section; 101, lap end; 102, lap structure; 103, first connecting hole;

[0032] 200, end cover; 210, first end cover; 220, second end cover; 201, rotating buckle; 2011, connecting plate; 2012, snap-on plate; 202, second connecting hole. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The utility model provides a water heater shell structure, which is an important component of the water heater. Figures 1 to 10 As shown, the shell structure of the water heater includes a cylinder 100 and an end cover 200. An opening 110 is formed at the end of the cylinder 100. The end cover 200 is covered at the opening 110. A rotation slot 120 is provided on one of the cylinder 100 and the end cover 200, and a rotation buckle 201 is provided on the other. The rotation slot 120 includes an entry section 121 and a clamping section 122 connected at an angle. The rotation buckle 201 can be clamped into the entry section 121, and can be clamped by causing the cylinder 100 and the end cover 200 to rotate relative to each other so that the rotation buckle 201 is rotated into the clamping section 122.

[0037] Compared with the prior art assembly method in which the metal cylinder and metal end cover of the water heater need to be pre-pressed and then subjected to interference fit, the matching size of the metal end cover closing and the metal cylinder pressing needs to be adjusted multiple times under this assembly method. The window of suitable size for assembly is very small and there are production errors, so it is impossible to ensure that the status of each batch is the same. The cylinder 100 and the end cover 200 of the water heater shell structure provided by the utility model are rotatably connected through a rotating slot 120 and a rotating buckle 201. The rotatable connection assembly method is simple to operate and has high assembly efficiency. In addition, the prior art assembly method of first pre-pressing and then subjected to interference fit is likely to affect other structures during the assembly process, such as causing the previously assembled structure to disengage. The water heater shell structure provided by the utility model is not easy to disengage after the cylinder 100 and the end cover 200 are rotatably connected, and has high stability.

[0038] In some embodiments, continue to refer to Figure 3 As shown, the cylinder 100 is formed by rolling a sheet. Optionally, the cylinder 100 is a cylinder. It should be noted that the cylinder 100 formed by rolling a sheet forms an opening 110 at both ends of its axial direction, and the end cover 200 includes a first end cover 210 and a second end cover 220, the first end cover 210 is covered at one of the openings 110, and the second end cover 220 is covered at the other opening 110.

[0039] In some embodiments, the plate is a plastic plate. In a specific embodiment, the material of the plastic plate can be ABS, which represents a terpolymer of three monomers: acrylonitrile (A), butadiene (B), and styrene (S); in a specific embodiment, the material of the plastic plate can be HIPS, which represents high-impact polystyrene; in a specific embodiment, the material of the plastic plate can be PP, which represents polypropylene; in a specific embodiment, the material of the plastic plate can be PE, which represents polyethylene; in a specific embodiment, the material of the plastic plate is PVC, which represents polypropylene. Compared with the prior art that uses metal materials to make the cylinder, the plate used to make the cylinder 100 of the utility model is a plastic plate, which has the advantages of light weight and low cost.

[0040] In some embodiments, the thickness of the plastic plate is 1.5mm-3mm. In one embodiment, the thickness of the plastic plate is 1.5mm; in one embodiment, the thickness of the plastic plate is 1.7mm; in one embodiment, the thickness of the plastic plate is 1.9mm; in one embodiment, the thickness of the plastic plate is 2.3mm; in one embodiment, the thickness of the plastic plate is 2.5mm; in one embodiment, the thickness of the plastic plate is 2.7mm; in one embodiment, the thickness of the plastic plate is 3mm. By setting the thickness of the plastic plate to 1.5mm-3mm, it is possible to avoid the phenomenon that the plastic plate is too thin, resulting in insufficient strength of the plastic plate, thereby causing the plastic plate to crack later, and it is possible to avoid the excessively high cost of the cylinder 100 caused by the excessive thickness of the plastic plate.

[0041] Continue to refer to Figure 3 and Figure 5 As shown, the plate forming the cylinder 100 includes two overlapping ends 101 arranged opposite to each other, and the two overlapping ends 101 are overlapped and fixed to form an overlapping structure 102. It should be noted that before the plate is rolled, it is necessary to cut it according to a preset size and perform pre-punching after cutting, for example, punching to form a rotating card slot 120 or other hole-shaped structures, so as to form an assembly structure reserved for assembling the end cover 200, the liner, the handle, etc.

[0042] In some embodiments, continue to refer to Figure 5 As shown, the overlap width a of the two overlap ends 101 is 10mm-25mm. In one embodiment, the overlap width a of the two overlap ends 101 is 10mm; in one embodiment, the overlap width a of the two overlap ends 101 is 12mm; in one embodiment, the overlap width a of the two overlap ends 101 is 15mm; in one embodiment, the overlap width a of the two overlap ends 101 is 18mm; in one embodiment, the overlap width a of the two overlap ends 101 is 20mm; in one embodiment, the overlap width a of the two overlap ends 101 is 22mm; in one embodiment, the overlap width a of the two overlap ends 101 is 25mm. By setting the overlap width a of the two overlap ends 101 to 10mm-25mm, it is possible to avoid the overlap width a being too narrow, resulting in insufficient strength at the connection of the cylinder 100, thereby causing the overlap structure 102 to come loose later, and it is also possible to avoid the overlap width a being too wide, resulting in too much required plate material, thereby causing the cost of manufacturing the cylinder 100 to be too high.

[0043] In some embodiments, the two overlapped ends 101 are ultrasonically welded or hot-melt welded. Compared with the prior art, when the color plate is rolled up, it is easy to fail to buckle due to the press-fitting form, which causes the color plate to expand when rolled up. The cylinder 100 provided by the utility model connects the two overlapped ends 101 together by ultrasonic welding or hot-melt welding, and the connection strength is increased, so that it is not easy to be separated in the later stage (for example, when the foaming material is filled between the inner liner and the outer shell structure).

[0044] In some embodiments, the end cover 200 is a plastic cover. Compared with the metal end cover in the prior art, the plastic cover has the advantages of light weight and low cost. In addition, compared with the existing shell structure using metal color plates, the shell structure of the water heater provided by the utility model uses the cylinder 100 and the end cover 200, which are both plastic parts. The cylinder 100 and the end cover 200 solve the problems of color plate compression expansion and difficulty in installing the end cover 200 that are easily caused during the production process of the existing water tank color plates through welding. The impact strength of the cylinder 100 and the end cover 200 made of plastic is higher than that of the existing color plates, so that the appearance of the water heater shell structure is not easily deformed during transportation.

[0045] In one embodiment, continue to refer to Figure 3 , Figure 7 , Fig. 9 and Fig.10 As shown, the rotating buckle 201 is arranged on the end cover 200 , and the rotating slot 120 is arranged on the cylinder 100 ; in another embodiment, the rotating buckle 201 is arranged on the cylinder 100 , and the rotating slot 120 is arranged on the end cover 200 .

[0046] In order to improve the assembly strength of the end cap 200 and the cylinder 100, in some embodiments, the number of the rotation slots 120 and the rotation buckles 201 are both multiple and arranged one by one. In one embodiment, multiple rotation slots 120 are arranged on the cylinder 100 and are evenly distributed along the circumference of the cylinder 100, and multiple rotation buckles 201 are arranged on the end cap 200 and are evenly distributed along the circumference of the end cap 200. In a more specific embodiment, as Figure 3 and Figure 7 As shown, five rotation slots 120 are provided on the cylinder 100 , and five rotation buckles 201 are provided on the end cover 200 .

[0047] In order to improve the structural strength of the rotating buckle 201, the rotating buckle 201 includes a connecting portion and a clamping portion, wherein the connecting portion is used to connect with the inner wall surface of the end cover 200, and the clamping portion can enter the rotating slot 120. Fig.10As shown, the connecting portion includes a plurality of connecting plates 2011 arranged in parallel, and the snap-in portion includes a snap-in plate 2012. One end of the connecting plate 2011 is connected to the inner wall surface of the end cover 200. The snap-in plate 2012 is arranged on a side of the plurality of connecting plates 2011 away from the inner wall surface of the end cover 200, and the snap-in plate 2012 protrudes from the connecting plate 2011 in the thickness direction of the end cover 200, thereby forming a rotating slot 120.

[0048] Continue to refer to Figure 4 As shown, in some embodiments, the entry section 121 and the clamping section 122 are connected in an L shape, the entry section 121 is extended in a direction parallel to the axis of the cylinder 100, and one end of the entry section 121 away from the clamping section 122 penetrates the annular end surface of the cylinder 100 to form an insertion port, and the clamping section 122 is extended along the circumference of the cylinder 100.

[0049] When assembling the end cover 200 to the cylinder body 100, first, move the end cover 200 in a direction parallel to the axis of the cylinder body 100, and adjust the end cover 200 so that the rotating buckle 201 corresponds one-to-one with the rotating slot 120; then, drive the end cover 200 so that the clamping portion of the rotating buckle 201 can enter the insertion port in a direction parallel to the axis of the cylinder body 100; then, continue to move in a direction parallel to the axis of the cylinder body 100, and the clamping portion can move to the connection between the entry section 121 and the clamping section 122; finally, rotate the end cover 200 along the circumference of the cylinder body 100, so that the clamping portion rotates and enters the clamping section 122, thereby realizing the limiting of the end cover 200 and the cylinder body 100 in a direction parallel to the axis of the cylinder body 100.

[0050] Of course, in other embodiments, the entry section 121 and the clamping section 122 are connected in a T-shape, one end of the entry section 121 is connected to the middle of the clamping section 122, the entry section 121 is extended in a direction parallel to the axis of the cylinder 100, and one end of the entry section 121 away from the clamping section 122 penetrates the annular end surface of the cylinder 100 to form an insertion port, and the clamping section 122 is extended along the circumference of the cylinder 100.

[0051] Compared with the L-shaped connected entry section 121 and the snap-in section 122, the T-shaped connected entry section 121 and the snap-in section 122 make the assembly of the end cover 200 and the cylinder 100 more flexible. Specifically, according to the above assembly steps, after the snap-in portion moves to the connection between the entry section 121 and the snap-in section 122, the snap-in portion can be rotated into the snap-in section 122 by rotating the end cover 200 in any direction on the circumference of the cylinder 100. The assembly workers no longer have to deliberately determine the rotation direction, and the mechanical impact caused by the wrong rotation direction can be avoided to cause mechanical damage to the rotating buckle 201 and the rotating slot 120.

[0052] In addition to the initial assembly of the end cap 200 and the cylinder 100 by using the rotating buckle 201 and the rotating slot 120, in order to improve the assembly strength of the cylinder 100 and the end cap 200, the cylinder 100 and the end cap 200 can also be connected for a second time. In some embodiments, Figure 5 and Figure 8 As shown, a first connection hole 103 is provided on the overlapping structure 102 , and a second connection hole 202 is provided on the end cover 200 . The connecting piece is passed through the first connection hole 103 and the second connection hole 202 to connect the overlapping structure 102 and the end cover 200 .

[0053] In a specific embodiment, both the first connection hole 103 and the second connection hole 202 are light holes, and the connecting member is a combination of a bolt and a nut, the stud of the bolt passes through the first connection hole 103 and the second connection hole 202, one of the nut and the screw head of the bolt is limitedly abutted on the outer wall surface of the cylinder 100, and the other is limitedly abutted on the inner wall of the end cover 200. In another embodiment, one of the first connection hole 103 and the second connection hole 202 is a light hole, and the other is a threaded hole, and the connecting member is a screw, which passes through the light hole and is threadedly connected in the threaded hole.

[0054] Furthermore, a plurality of first connection holes 103 and second connection holes 202 may be provided and arranged in one-to-one correspondence, wherein the plurality of first connection holes 103 are arranged at intervals in a direction parallel to the axis of the cylinder 100 , and the plurality of second connection holes 202 are arranged at intervals on the end cover 200 .

[0055] The utility model also provides a water heater, comprising an inner tank and the above-mentioned water heater shell structure, wherein the inner tank is placed in the water heater shell structure. By using the above-mentioned water heater shell structure, the assembly efficiency of the water heater is improved, and the stability after assembly is also improved.

[0056] 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 housing structure, characterized in that: include: A cylinder (100), wherein an end of the cylinder (100) is formed with an opening (110); An end cover (200), the end cover (200) being arranged to cover the opening (110); A rotation slot (120) is provided on one of the cylinder (100) and the end cover (200), and a rotation buckle (201) is provided on the other; the rotation slot (120) comprises an entry section (121) and a connection section (122) connected at an angle; the rotation buckle (201) can be inserted into the entry section (121) and can be rotated into the connection section (122) to achieve connection.

2. The water heater housing structure according to claim 1, characterized in that: The cylinder (100) is formed by winding a plate, wherein the plate comprises two overlapping ends (101) arranged opposite to each other, and the two overlapping ends (101) are overlapped and fixed to form an overlapping structure (102).

3. The water heater housing structure according to claim 2, characterized in that: The overlapping width a of the two overlapping ends (101) is 10 mm to 25 mm.

4. The water heater housing structure according to claim 2, characterized in that: The two overlapping ends (101) are ultrasonically welded or heat-melted.

5. The water heater housing structure according to claim 2, characterized in that: The overlapping structure (102) is provided with a first connecting hole (103), and the end cover (200) is provided with a second connecting hole (202). A connecting member is inserted into the first connecting hole (103) and the second connecting hole (202) to connect the overlapping structure (102) and the end cover (200).

6. The water heater housing structure according to claim 2, characterized in that: The plate material is a plastic plate, and the thickness of the plastic plate is 1.5 mm-3 mm.

7. The water heater housing structure according to claim 1, characterized in that: The number of the rotating slots (120) and the number of the rotating buckles (201) are both multiple and arranged in one-to-one correspondence.

8. The water heater housing structure according to claim 1, characterized in that: The entry section (121) and the clamping section (122) are connected in an L shape; Alternatively, the entry section (121) and the engaging section (122) are connected in a T-shape.

9. The water heater housing structure according to claim 1, characterized in that: An opening (110) is formed at each of the two ends of the cylinder (100), and the end cover (200) comprises a first end cover (210) and a second end cover (220), wherein the first end cover (210) is provided at one of the openings (110), and the second end cover (220) is provided at the other of the openings (110).

10. A water heater, characterized in that: The utility model comprises an inner tank and a water heater shell structure according to any one of claims 1 to 9, wherein the inner tank is placed in the water heater shell structure.

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