Gas water heater shell and gas water heater

Abstract

The utility model relates to a water heater technical field, specifically disclose a kind of shell and gas water heater for gas water heater, the shell for gas water heater includes face shell, bottom shell and connecting bracket, wherein, face shell has along the butt joint channel of first direction extension;Bottom shell has along the first mounting hole of first direction extension, and with face shell along the second direction arrangement perpendicular to first direction;Connecting bracket has along the butt joint protrusion and second mounting hole of interval arrangement of second direction, connecting bracket and the inside wall of face shell are attached, butt joint protrusion is inserted in butt joint channel;Fastener is passed in first mounting hole and second mounting hole to connect bottom shell and connecting bracket.The above-mentioned setting improves the connection efficiency of fastener, and the assembly efficiency of whole shell.In addition, the insertion of butt joint protrusion of connecting bracket and butt joint channel makes fastener play limiting action when screwing, avoid connecting bracket to rotate with fastener, improve the convenience of fastener connection.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a casing for a gas water heater and a gas water heater. Background Technology

[0002] Balanced-flue gas water heaters require air drawn from outdoors for combustion, and exhaust gases are also discharged outdoors. Therefore, the outer casing of a balanced-flue gas water heater must be airtight. The casing is typically connected using screws. The casing consists of a bottom shell, a top shell, and a front shell. The four front shells form a cylindrical shape with two openings, while the top shell seals one of these openings. Both the top and front shells have mounting holes on their folded edges. Screws pass through two of these holes and are screwed into internal nuts. Because the bottom shell forms a closed casing, the operator cannot secure the internal nuts, making it easy for the nuts to rotate synchronously with the screws during the screwing process. This results in difficulty in tightening the screws. Some operators glue the nuts to the casing, increasing the steps and reducing assembly efficiency.

[0003] Therefore, there is an urgent need to research a casing for a gas water heater and a gas water heater in order to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a casing for a gas water heater and a gas water heater, so as to solve the problem that the screw connection between the casing and the face shell is difficult in the prior art, resulting in low assembly efficiency of the casing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A housing for a gas water heater, comprising:

[0007] A face shell having a docking channel extending along a first direction;

[0008] A bottom shell having a first mounting hole extending along a first direction, the bottom shell and the top shell being arranged along a second direction perpendicular to the first direction;

[0009] A connecting bracket has mating protrusions and a second mounting hole arranged at intervals along a second direction. The connecting bracket fits against the inner sidewall of the face shell, and the mating protrusions are inserted into the mating channel. Fasteners pass through the first mounting hole and are screwed into the second mounting hole to connect the bottom shell and the connecting bracket.

[0010] As an optional technical solution for the casing of a gas water heater, the end face of the mating protrusion is flush with the outer surface of the casing; and / or,

[0011] The docking protrusion is elongated and extends along a third direction, which is perpendicular to both the first and second directions.

[0012] As an optional technical solution for the casing of a gas water heater, the mating protrusion is welded to the side wall of the mating channel.

[0013] As an optional technical solution for the casing of a gas water heater, the width of the mating protrusion gradually decreases from the inside out, and the width of the mating channel is greater than or equal to the maximum width of the mating protrusion. The weld produced by welding fills the gap between the mating channel and the mating protrusion.

[0014] As an optional technical solution for the casing of a gas water heater, the mating protrusion is located on the outer side of the connecting bracket, and the inner side of the connecting bracket has a stamped groove at the position corresponding to the mating protrusion.

[0015] As an optional technical solution for the casing of a gas water heater, the outer periphery of the second mounting hole has an annular flange, the inner diameter of which is the same as the inner diameter of the second mounting hole.

[0016] As an optional technical solution for the outer shell of a gas water heater, the front shell includes a flat first shell body and a first flange perpendicular to the first shell body, the bottom shell includes a flat second shell body and a second flange perpendicular to the second shell body, the second flange has a clearance channel, the second flange is parallel to the first flange, the connecting bracket has a clearance groove, the connecting bracket passes through the clearance channel, and the first flange is located in the clearance groove.

[0017] As an optional technical solution for the housing of a gas water heater, the housing of the gas water heater further includes a sealing element, which is sandwiched between the first flange and the second flange.

[0018] As an optional technical solution for the casing of a gas water heater, the connecting bracket includes a first fixing part, a second fixing part, and a connecting part. The connecting part includes a first section, a second section, and a third section, all of which are plate-shaped structures. The first section and the third section are parallel, and the second section is perpendicular to and connected between the first section and the third section. The end of the first section away from the second section is connected to the first fixing part, and the end of the third section away from the second section is connected to the second fixing part. The first section, the second section, and the third section form the clearance groove.

[0019] A gas water heater, including the outer casing for a gas water heater as described in any of the above technical solutions.

[0020] This utility model has at least the following beneficial effects:

[0021] This utility model provides a casing for a gas water heater and a gas water heater. The casing includes a front shell, a bottom shell, and a connecting bracket. The front shell has a mating channel extending along a first direction; the bottom shell has a first mounting hole extending along the first direction, and the bottom shell and the front shell are arranged along a second direction perpendicular to the first direction; the connecting bracket has mating protrusions and second mounting holes arranged at intervals along the second direction, the connecting bracket is fitted against the inner sidewall of the front shell, and the mating protrusions are inserted into the mating channel; fasteners are passed through the first mounting holes and the second mounting holes to connect the bottom shell and the connecting bracket.

[0022] The design of the connecting bracket eliminates the need for nuts, meaning there's no need for internal nut fixing. The front and back shells are connected simply by fasteners passing through the first mounting hole and screwing into the second mounting hole. This reduces the difficulty of fastener connection and improves the overall assembly efficiency of the housing. Furthermore, the mating protrusions and insertion channels of the connecting bracket act as a limiter during screwing, preventing the connecting bracket from rotating with the fastener, further enhancing the convenience of fastener connection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a partial exploded structural diagram of the outer casing of the gas water heater in an embodiment of this utility model;

[0025] Figure 2 This is a cross-sectional view of the connecting bracket connecting the front shell and the bottom shell in an embodiment of this utility model.

[0026] In the picture:

[0027] 100. Faceplate; 110. First shell body; 111. Docking channel; 120. First flange;

[0028] 200. Bottom shell; 210. Second shell body; 211. First mounting hole; 220. Second flange; 221. Clearance passage;

[0029] 300. Connecting bracket; 310. First fixing part; 311. Butt joint protrusion; 312. Stamped groove; 320. Second fixing part; 321. Second mounting hole; 322. Annular flange; 330. Connecting part; 331. First section; 332. Second section; 333. Third section; 334. Clearance groove;

[0030] 400. Sealing components. Detailed Implementation

[0031] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0032] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0033] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0034] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0035] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0036] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0037] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a casing for a gas water heater, comprising a front shell 100, a bottom shell 200, and a connecting bracket 300. The front shell 100 has a mating channel 111 extending along a first direction; the bottom shell 200 has a first mounting hole 211 extending along the first direction, and the bottom shell 200 and the front shell 100 are arranged along a second direction perpendicular to the first direction; the connecting bracket 300 has mating protrusions 311 and second mounting holes 321 spaced apart along the second direction, and the connecting bracket 300 fits against the inner sidewall of the front shell 100, with the mating protrusions 311 inserted into the mating channel 111; fasteners pass through the first mounting holes 211 and the second mounting holes 321 to connect the bottom shell 200 and the connecting bracket 300. The fasteners are screws.

[0039] The design of the connecting bracket 300 eliminates the need for nuts, meaning there's no need to secure them inside the housing. The front shell 100 and bottom shell 200 can be connected directly by screwing the fastener through the first mounting hole 211 and into the second mounting hole 321. This reduces the difficulty of fastener connection and improves the overall assembly efficiency of the housing. Furthermore, the insertion of the mating protrusion 311 and mating channel 111 on the connecting bracket 300 allows the fastener to be positioned during screwing, preventing the connecting bracket 300 from rotating with the fastener and further enhancing the convenience of fastener connection.

[0040] In some embodiments, the end face of the mating protrusion 311 is flush with the outer surface of the shell 100. From the outside, the mating protrusion 311 completely blocks the mating channel 111, thus forming a whole, which is more aesthetically pleasing and will not cause scratches during transportation.

[0041] To prevent the connecting bracket 300 from swaying relative to the shell 100, the mating protrusion 311 is elongated and extends along a third direction, which is perpendicular to both the first and second directions. In other embodiments, the cross-section of the mating protrusion 311 can be circular or other polygonal.

[0042] Furthermore, the mating protrusion 311 is welded to the side wall of the mating channel 111 so that the face shell 100 and the connecting bracket 300 are relatively fixed, so as to ensure that the fastener can be smoothly screwed into the second mounting hole 321 during the fastener screwing process, and to prevent the connecting bracket 300 from moving away from the bottom shell 200.

[0043] Welding processes typically result in weld seams. To accommodate these seams and improve surface finish, in some embodiments, the width of the mating protrusion 311 gradually decreases from the inside out, and the width of the mating channel 111 is greater than or equal to the maximum width of the mating protrusion 311. The weld seam produced during welding fills the gap between the mating channel 111 and the mating protrusion 311. In other words, the sidewalls of the mating channel 111 and the sidewalls of the mating protrusion 311 partially melt and form a solid weld structure with the welding material. The gap between the mating channel 111 and the mating protrusion 311 can accommodate the solid weld structure produced after welding, preventing the weld seam from protruding outwards, improving both appearance and welding strength. Furthermore, the length of the mating protrusion 311 gradually decreases from the inside out, and the length of the mating channel 111 is greater than or equal to the maximum length of the mating protrusion 311. This defined shape of the mating protrusion 311 improves welding convenience and facilitates insertion into the mating channel 111 from the inside. The width of the mating protrusion 311 is the dimension in the second direction; the length of the mating protrusion 311 is the dimension in the third direction.

[0044] The mating protrusion 311 is prepared by a stamping process. Specifically, the mating protrusion 311 is located on the outside of the connecting bracket 300, and the inner side of the connecting bracket 300 has a stamping groove 312 at the corresponding position of the mating protrusion 311.

[0045] To improve the reliability of the connection between the screw and the connecting bracket 300, the outer periphery of the second mounting hole 321 has an annular flange 322. The inner diameter of the annular flange 322 is the same as the inner diameter of the second mounting hole 321, so as to increase the connection area with the screw and improve the connection firmness. The mating of the second mounting hole 321 and the annular flange 322 can be referred to as a flanged hole, which is formed by stamping the sheet-like structure of the connecting bracket 300 using a stamping process. The screw can be a self-tapping screw, which directly threads inside the flanged hole during the tightening process to mate with itself.

[0046] In some embodiments, the front shell 100 includes a flat first shell body 110 and a first flange 120 perpendicular to the first shell body 110, and the bottom shell 200 includes a flat second shell body 210 and a second flange 220 perpendicular to the second shell body 210. The second flange 220 has a clearance channel 221 and is parallel to the first flange 120. The connecting bracket 300 has a clearance groove 334, and the connecting bracket 300 passes through the clearance channel 221, with the first flange 120 located in the clearance groove 334. The cooperation between the first flange 120 and the second flange 220 helps to improve the convenience of docking between them. A docking channel 111 is provided in the first shell body 110; a first mounting hole 211 is provided in the second shell body 210.

[0047] To ensure the airtightness of the outer casing, in some embodiments, the outer casing of the gas water heater further includes a sealing element 400, which is sandwiched between the first flange 120 and the second flange 220. The sealing element 400 is a sealing strip, which is adhered to the first flange 120 before assembly.

[0048] The connecting bracket 300 includes a first fixing part 310, a second fixing part 320, and a connecting part 330. The connecting part 330 includes a first segment 331, a second segment 332, and a third segment 333, all of which are plate-like structures. The first segment 331 and the third segment 333 are parallel, and the second segment 332 is perpendicular to and connects between the first segment 331 and the third segment 333. The end of the first segment 331 away from the second segment 332 is connected to the first fixing part 310, and the end of the third segment 333 away from the second segment 332 is connected to the second fixing part 320. The first segment 331, the second segment 332, and the third segment 333 form a clearance groove 334. The connecting part 330 is formed by a stamping process, which is simple to manufacture. The entire connecting bracket 300 has a plate-like structure, resulting in low cost. A mating protrusion 311 is provided on the first fixing part 310, and a second mounting hole 321 is provided on the second fixing part 320.

[0049] In this embodiment, the face shell 100 is formed by stamping a flat raw material to form side plates and four first shell bodies 110 perpendicular to the side plates and surrounding the side plates. The first shell body 110 is bent at the end away from the side plates to form a first flange 120.

[0050] In some embodiments, the front shell 100 and the surrounding frame are joined to form a cylindrical structure with two openings. The bottom shell 200 seals one of the openings. The outer casing for the gas water heater also includes a top shell, which seals the other opening. The connection between the top shell and the front shell 100 can be achieved by referring to the connection between the bottom shell 200 and the front shell 100. In other embodiments, four front shells 100 can be used to form a cylindrical structure.

[0051] This embodiment also provides a gas water heater, including the outer casing of the gas water heater in any of the above embodiments. In some embodiments, the gas water heater can be a balanced flue gas water heater. Balanced flue gas water heaters draw air from the outside during combustion, and the exhaust gases produced after combustion are also discharged outdoors. Therefore, balanced flue gas water heaters have relatively high requirements for overall sealing. Thus, the seal 400 needs to seal all connections between the bottom shell 200 and the front shell 100, as well as all connections between the front shell 100 and the frame.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A casing for a gas water heater, characterized in that, include: A face shell (100) having a docking channel (111) extending in a first direction. The bottom shell (200) has a first mounting hole (211) extending along a first direction, and the bottom shell (200) and the front shell (100) are arranged along a second direction perpendicular to the first direction; A connecting bracket (300) has a mating protrusion (311) and a second mounting hole (321) arranged at intervals along a second direction. The connecting bracket (300) fits against the inner sidewall of the face shell (100). The mating protrusion (311) is inserted into the mating channel (111). Fasteners pass through the first mounting hole (211) and are screwed into the second mounting hole (321) to connect the bottom shell (200) and the connecting bracket (300).

2. The outer casing for a gas water heater according to claim 1, characterized in that, The end face of the mating protrusion (311) is flush with the outer surface of the shell (100); and / or, The docking protrusion (311) is elongated and extends along a third direction, which is perpendicular to both the first and second directions.

3. The outer casing for a gas water heater according to claim 1, characterized in that, The docking protrusion (311) is welded to the side wall of the docking channel (111).

4. The outer casing for a gas water heater according to claim 3, characterized in that, From the inside out, the width of the mating protrusion (311) gradually decreases, and the width of the mating channel (111) is greater than or equal to the maximum width of the mating protrusion (311). The weld produced by welding fills the gap between the mating channel (111) and the mating protrusion (311).

5. The outer casing for a gas water heater according to claim 1, characterized in that, The docking protrusion (311) is located on the outside of the connecting bracket (300), and the inner side of the connecting bracket (300) has a stamped groove (312) at the position corresponding to the docking protrusion (311).

6. The outer casing for a gas water heater according to claim 1, characterized in that, The second mounting hole (321) has an annular flange (322) on its outer periphery, and the inner diameter of the annular flange (322) is the same as the inner diameter of the second mounting hole (321).

7. The housing for a gas water heater according to any one of claims 1-6, characterized in that, The front shell (100) includes a flat first shell body (110) and a first flange (120) perpendicular to the first shell body (110). The bottom shell (200) includes a flat second shell body (210) and a second flange (220) perpendicular to the second shell body (210). The second flange (220) has a clearance channel (221) and is parallel to the first flange (120). The connecting bracket (300) has a clearance groove (334). The connecting bracket (300) passes through the clearance channel (221), and the first flange (120) is located in the clearance groove (334).

8. The housing for a gas water heater according to claim 7, characterized in that, The outer casing of the gas water heater also includes a sealing element (400), which is sandwiched between the first flange (120) and the second flange (220).

9. The housing for a gas water heater according to claim 7, characterized in that, The connecting bracket (300) includes a first fixing part (310), a second fixing part (320), and a connecting part (330). The connecting part (330) includes a first segment (331), a second segment (332), and a third segment (333), all of which are plate-shaped structures. The first segment (331) and the third segment (333) are parallel. The second segment (332) is perpendicular to and connected between the first segment (331) and the third segment (333). The end of the first segment (331) away from the second segment (332) is connected to the first fixing part (310). The end of the third segment (333) away from the second segment (332) is connected to the second fixing part (320). The first segment (331), the second segment (332), and the third segment (333) form the clearance groove (334).

10. A gas-fired water heater, characterized in that, Includes the housing for a gas water heater as described in any one of claims 1-9.

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