Gas device and gas water heater

Abstract

A gas device includes a combustion chamber and a fan. The combustion chamber includes a bottom plate provided with an air inlet communicated with an inner cavity of the combustion chamber. The bottom plate includes a first snap-fit member spaced apart from the air inlet along a front-rear direction of the gas device, and a positioning member spaced apart from the air inlet along a left-right direction of the gas device. The fan is connected to the bottom plate and provided with an air outlet communicated with the air inlet. The fan includes a second snap-fit member and a connection member, and is configured such that, when the fan moves to a bottom of the combustion chamber in a front-to-rear direction, the second snap-fit member snaps into the first snap-fit member and the connection member is in positioning fit with the positioning member.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to Chinese application No. 202423023918.6, filed on Dec. 5, 2024, the entire content of which is incorporated herein by reference.TECHNICAL FIELD

[0002] This present application relates to the technical field of gas devices, and in particular, to a gas device and a gas water heater.BACKGROUND

[0003] In the related art, a fan in a gas water heater is usually mounted at the bottom of a combustion chamber. During maintenance or replacement of the fan, the fan is usually removed along a left-right direction of the gas water heater. However, since the fan is arranged adjacent to a side wall of a casing of the gas water heater, the side wall of the casing and components around the fan become obstacles to the removal / mounting of the fan. As a result, conventional fan removal usually involves first dismantling the entire casing, and then removing the fan of the gas water heater. This has made entire operation process more complex and cumbersome, which affects removal / mounting efficiency of the fan.SUMMARY

[0004] This present application aims to resolve at least one of the technical problems existing in the related art. To this end, this present application provides a gas device that allows removing / mounting the fan without needing to dismantle the entire casing, thereby improving the efficiency and reducing the difficulty of fan removal / mounting.

[0005] This present application further provides a gas water heater including the gas device.

[0006] In accordance with a first aspect of this present application, an embodiment provides a gas device, includes a combustion chamber and a fan. The combustion chamber includes a bottom plate provided with an air inlet communicated with an inner cavity of the combustion chamber. The fan is connected to the bottom plate, and the fan is provided with an air outlet communicated with the air inlet. The bottom plate is provided with a first snap-fit member and a positioning member. The first snap-fit member is spaced apart from the air inlet along a front-rear direction of the gas device. The positioning member is spaced apart from the air inlet along a left-right direction of the gas device. The fan is provided with a second snap-fit member and a connection member, and is configured such that when the fan moves to the bottom of the combustion chamber in a front-to-rear direction, the second snap-fit member is capable of snapping into the first snap-fit member, and the connection member is in positioning fit with the positioning member.

[0007] The gas device according to the embodiment of this present application has at least the following beneficial effects.

[0008] By providing the first snap-fit member and the positioning member on the bottom plate, and providing the second snap-fit member and the connection member on the fan, the gas device in this embodiment of this present application enables the removal / mounting operation of the fan to be performed along the front-rear direction of the gas device when the fan is moved in the direction from front to rear to the bottom of the combustion chamber and the second snap-fit member snaps into the first snap-fit member while the connection member is in positioning fit with the positioning member. In this way, a dismounting operation of the fan can be performed along the front-rear direction of the gas device, thereby reducing obstruction from a side wall of a casing of a gas water heater and other components during the fan removal / mounting process. When removing the fan, only a front panel of the gas water heater needs to be opened to perform the fan removal / mounting operation. This achieves removal / mounting of the fan without needing to dismantle the entire casing. In this way, a removal / mounting process of the fan is simplified with lower difficulty and improved efficiency.

[0009] According to some embodiments of this present application, the positioning member is a first lug oriented towards the fan, the fan includes a housing, the connection member is a second lug formed at the housing, and an end of the first lug is bent to form a hook that hooks with the second lug.

[0010] According to some embodiments of this present application, the first snap-fit member is a groove formed at a bottom surface of the bottom plate, the second snap-fit member is a tongue formed at the housing, and when the tongue is inserted into the groove, the second lug moves into the hook.

[0011] According to some embodiments of this present application, the first lug is arranged at one side of the air inlet. In an embodiment, the present application is provided with two first lugs respectively arranged at two sides of the air inlet, and two second lugs respectively arranged in positioning fit with the two first lugs.

[0012] According to some embodiments of this present application, the first lug is provided with a first connection hole, the second lug is provided with a second connection hole. The first connection hole and the second connection hole are arranged oppositely along the front-rear direction of the gas device. The gas device further includes a first fastener passing through the first connection hole and the second connection hole.

[0013] According to some embodiments of this present application, the bottom plate is further provided with a third lug. Along the left-right direction of the gas device, the first lug is arranged at one side of the air inlet, and the third lug is arranged at the other side of the air inlet. The housing is provided with a fourth lug fixedly connected to the third lug.

[0014] According to some embodiments of this present application, the third lug is provided with a third connection hole, the fourth lug is provided with a fourth connection hole. The third connection hole and the fourth connection hole are arranged oppositely along the front-rear direction of the gas device. The gas device further includes a second fastener passing through the third connection hole and the fourth connection hole.

[0015] According to some embodiments of this present application, a bent edge is arranged at a rear side of the bottom plate. The first snap-fit member is formed at the bent edge, and the bent edge, the first lug, and the third lug form an mounting area on a bottom surface of the bottom plate. The housing is provided with an air outlet member matching the mounting area, the air outlet member includes the air outlet, the second lug and the fourth lug are located on two sides of the air outlet member, and the second snap-fit member is formed at the air outlet member.

[0016] According to some embodiments of this present application, a mounting plate is arranged at the bottom surface of the bottom plate. The mounting plate is provided with a through hole, the through hole communicates the air inlet and the air outlet. The bent edge, the first lug, and the third lug are all formed at the mounting plate.

[0017] According to some embodiments of this present application, an upper end face of the hook abuts the second lug to support the second lug, the hook extends towards a front side of the gas device, and a width of the hook along the front-rear direction of the gas device is greater than or equal to 2 mm.

[0018] In accordance with a second aspect of this present application, an embodiment provides a gas water heater including the gas device according to any one of the embodiments of the first aspect.

[0019] The gas water heater according to this embodiment of this present application has at least the following beneficial effects.

[0020] The gas water heater uses the gas device according to the embodiments of the first aspect, by providing the first snap-fit member and the positioning member on the bottom plate, and providing the second snap-fit member and the connection member on the fan, the gas water heater enables the removal / mounting operation of the fan to be performed along the front-rear direction of the gas device when the fan is moved in the direction from front to rear to the bottom of the combustion chamber and the second snap-fit member snaps into the first snap-fit member while the connection member is in positioning fit with the positioning member. In this way, a dismounting operation of the fan can be performed along the front-rear direction of the gas device, thereby reducing obstruction from a side wall of a casing of a gas water heater and other components during the fan removal / mounting process. When removing the fan, only a front panel of the gas water heater needs to be opened to perform the fan removal / mounting operation. This achieves removal / mounting of the fan without needing to dismantle the entire casing. In this way, a removal / mounting process of the fan 300 is simplified with lower difficulty and improved efficiency, and thus the maintainability of the gas water heater is enhanced. In addition, by reducing the number of times the casing of the gas water heater is dismantled, the risk of decreased structural stability caused by frequent dismantling of the casing is effectively reduced, thereby enhancing the overall structural stability and durability of the gas water heater.

[0021] Additional aspects and advantages of this present application are set forth in the following descriptions, some of which will become apparent in the following descriptions, or be learned by practice of this present application.BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] FIG. 1 is a schematic overall diagram of a gas water heater with a panel removed according to an embodiment of this present application;

[0024] FIG. 2 is a schematic structural diagram of a gas device according to an embodiment of this present application;

[0025] FIG. 3 is a schematic diagram of a partial exploded structure of a gas device according to an embodiment of this present application;

[0026] FIG. 4 is a schematic diagram of a fan mounted to a bottom plate according to an embodiment of this present application;

[0027] FIG. 5 is a partial enlarged view of portion A in FIG. 2;

[0028] FIG. 6 is a schematic partial view of a bottom plate of an embodiment of this present application;

[0029] FIG. 7 is a schematic structural diagram of a fan according to an embodiment of this present application; and

[0030] FIG. 8 is a side view of a mounting plate according to an embodiment of this present application.REFERENCE NUMERALS

[0031] gas device 1000; gas water heater 2000; casing 2100; chamber 2110;

[0032] combustion chamber 100;

[0033] bottom plate 200; air inlet 210; first snap-fit member 220; groove 221; positioning member 230; first lug 231; first connection hole 2311; hook 2312; third lug 240; third connection hole 241; bent edge 250; mounting area 260;

[0034] Fan 300; air outlet 310;

[0035] housing 400; second snap-fit member 410; tongue 411; connection member 420; second lug 421; second connection hole 4211; fourth lug 430; fourth connection hole 431; air outlet member 440; and

[0036] mounting plate 500; through hole 510.DETAILED DESCRIPTION OF EMBODIMENTS

[0037] Embodiments of this present application are described in detail below, and examples of the embodiments are shown in the accompany drawings, throughout which identical or similar elements or elements having identical or similar functions are represented by identical or similar reference numerals. The following embodiments described with reference to the accompany drawings are examples, which are intended only to interpret this present application, and shall not be understood as limitations to this present application.

[0038] In descriptions of this present application, it should be understood that, orientations or positional relationships indicated by orientation descriptions such as top and bottom are orientations or positional relationships shown based on the accompanying drawings, which are used only to facilitate the descriptions of this present application and simplify the descriptions, rather than indicate or imply that a related apparatus or element needs to have a specific orientation or needs to be constructed and operated at a specific orientation, and therefore shall not be understood as limitations to this present application.

[0039] In descriptions of this present application, “a plurality of” means two or more. The terms “first” and “second” (if any) are intended only for a purpose of distinguishing between technical features, and shall not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating an order of indicated technical features.

[0040] In descriptions of this present application, unless otherwise explicitly limited, words such as “arrange,”“mount,” and “connect” should be understood in a broad sense. Those having ordinary skills in the art can properly determine specific meanings of the words in this present application based on specific contents of the technical schemes.

[0041] To effectively provide needed air flow for the combustion chamber, the fan is usually mounted at the bottom of the combustion chamber to supply air to the combustion chamber, so as to ensure full combustion of gas and normal operation of the water heater. During maintenance or replacement of a fan, the existing fan is usually removed along a left-right direction of the gas water heater. However, since the fan is arranged adjacent to a side wall of a casing, and other components are arranged at a side of the fan facing away from the side wall of the casing, the side wall of the housing and surrounding components restrict the operating space for fan removal.

[0042] Conventional fan removal usually involves first completely dismantling the entire casing of the gas water heater, and then removing the fan. The entire process is cumbersome and complex, and operations are difficult and time-consuming, which reduces the efficiency of fan removal / mounting. In addition, frequent dismantling of the gas water heater casing easily exposes other components, increasing the risk of accidental operation or damage, and may also cause loosening of connections between internal components of the gas water heater, leading to decreased overall structural stability.

[0043] In view of the above, as shown in FIG. 1, some embodiments of this present application propose a gas device 1000, suitable for a gas water heater 2000. The gas water heater 2000 includes a casing 2100, and a chamber 2110 is provided inside the casing 2100 for accommodating components such as a fan 300, a combustion chamber 100, and an electric control board. The gas device 1000 is described with reference to FIG. 1 to FIG. 8.

[0044] For ease of description, the following contents are based on mounting of the gas water heater 2000 in a use environment. When a user stands facing the gas water heater 2000, a side of the gas water heater 2000 facing the user is front, a side away from the user is rear, a side corresponding to the user's left hand is left, a side corresponding to the user's right hand is right, a side close to the ground is bottom, and a side away from the ground is top.

[0045] As shown in FIG. 2 and FIG. 3, in an embodiment of this present application, the gas device 1000 includes a combustion chamber 100 and a fan 300. A burner, a heat exchanger, and other components may be mounted in the combustion chamber 100. With the burner, gas can be burned in an inner cavity of the combustion chamber 100 to release heat. Specifically, the combustion chamber 100 is generally box-shaped and fixed within the chamber 2110. In this embodiment, the combustion chamber 100 includes side plates and a bottom plate 200, the side plates are arranged in an enclosing manner to form a frame, the bottom plate 200 is connected to the bottom of the frame. The bottom plate 200 is provided with an air inlet 210, and the air inlet 210 is communicated with the inner cavity of the combustion chamber 100. Based on this, air may flow into the inner cavity of the combustion chamber 100 through the air inlet 210 to enable full combustion of the gas.

[0046] Continuing to refer to FIG. 2 and FIG. 3, in this embodiment of this present application, the fan 300 is arranged at a lower side of the combustion chamber 100, and the fan 300 is provided with an air outlet 310. Based on this, with reference to FIG. 4, it can be seen that when the fan 300 is connected to the bottom plate 200, the air outlet 310 is communicated with the air inlet 210, and the fan 300 may supply air to the inner cavity of the combustion chamber 100 through the air outlet 310.

[0047] To implement a detachable connection between the fan 300 and the bottom plate 200, as shown in FIG. 2 and FIG. 4, in an embodiment of this present application, the bottom plate 200 is provided with a first snap-fit member 220 and a positioning member 230, and the fan 300 is provided with a second snap-fit member 410 and a connection member 420, the first snap-fit member 220 fits with the second snap-fit member 410, and the positioning member 230 fits with the connection member 420. Specifically, the first snap-fit member 220 and the air inlet 210 are spaced apart along a front-rear direction of the gas device 1000. In an example, the first snap-fit member 220 is arranged at a rear side of the air inlet 210. The positioning member 230 and the air inlet 210 are spaced apart along a left-right direction of the gas device 1000. In an example, the positioning member 230 is arranged at a right side of the air inlet 210.

[0048] Continuing to refer to FIG. 2 and FIG. 4, in this embodiment of this present application, when the fan 300 is moved to the bottom of the combustion chamber 100 in a front-to-rear direction, the second snap-fit member 410 is capable of snapping into the first snap-fit member 220, and the connection member 420 is positioned and cooperates fit with the positioning member 230. It can be understood that when the fan 300 moves from the front to the rear, on the one hand, the cooperation between the connection member 420 and the positioning member 230 may serve a locking function in the left-right direction, facilitating the alignment of the second snap-fit member 410 with the first snap-fit member 220, enabling the second snap-fit member 410 to accurately snap-fit with the first snap-fit member 220. On the other hand, when the connection member 420 cooperates and fits with the positioning member 230, it may prevent further rearward movement of the fan 300, thereby serving a positioning function in the front-rear direction. In this way, the mounting accuracy of the fan 300 may be improved. The snap-fit engagement between the second snap-fit member 410 and the first snap-fit member 220 realizes the fixation of the fan 300 to the bottom plate 200, while achieving a simple removal / mounting of the fan 300.

[0049] It should be noted that in an embodiment of this present application, one of the first snap-fit member 220 and the second snap-fit member 410 is a snap hook, and the other is a snap catch. The snap hook is snapped into and engaged with the snap catch to achieve fixation of the fan 300. In this embodiment, the positioning member 230 may be a positioning protrusion a positioning groove, or other positioning structure. The connection member 420 may be arranged depending on a specific form of the positioning member 230. In an embodiment, the positioning member 230 may be a positioning groove, and the connection member 420 may be a positioning hook matching the positioning groove to achieve a snap-fit positioning. Specifically, the positioning member 230 and the connection member 420 may be selected and set according to actual conditions.

[0050] It can be understood that in this embodiment of this present application, through the snap-fit engagement of the second snap-fit member 410 and the first snap-fit member 220 and the positioning cooperation of the connection member 420 with the positioning member 230, the removal / mounting operation of the fan 300 may be performed along the front-rear direction of the gas device 1000, thereby avoiding obstruction of a side wall of the casing 2100 of the gas water heater 2000 and other components during the fan 300 removal / mounting process. When removing the fan 300, only a front panel of the gas water heater 2000 needs to be opened. In this way, the fan 300 may be dismounted without dismantling the entire casing 2100, thereby simplifying a removal / mounting process of the fan 300 with lower difficulty and improved efficiency.

[0051] In addition, since dismantling the casing 2100 is unnecessary for removing / mounting the fan 300, the number of times the casing 2100 of the gas water heater 2000 is dismantled is reduced. This effectively reduces the risk of decreased structural stability caused by frequent dismantling of the casing 2100, thereby enhancing the overall structural stability and durability of the gas water heater 2000.

[0052] As shown in FIG. 3 and FIG. 6, in an embodiment of this present application, the positioning member 230 is a first lug 231, and the first lug 231 is arranged towards the fan 300. In an example, the first lug 231 may protrude downwardly from the bottom plate 200. In another example, the first lug 231 is connected to the bottom plate 200 and is provided with a bent segment that is bent downward. Specifically, an end of the first lug 231 is bent forward to form a hook 2312.

[0053] As shown in FIG. 3 and FIG. 7, in an embodiment of this present application, the fan 300 includes a housing 400. An air duct is formed inside the housing 400 An air outlet 310 is formed at an upper side of the housing 400, and an exit of the air duct is communicated with the air outlet 310. In this embodiment, the connection member 420 is a second lug 421 formed at the housing 400, and the second lug 421 may be arranged at an upper half of the housing 400 and at the same height as the first lug 231.

[0054] With reference to FIG. 5, it can be understood that in this embodiment, when the fan 300 is moved to the bottom of the combustion chamber 100 in the front-to-rear direction, the first lug 231 is in positioning fit with the second lug 421, and the hook 2312 may hook the second lug 421, which further improves connection stability between the fan 300 and the bottom plate 200.

[0055] It can be understood that in this embodiment of this present application, the hook 2312 protrudes from the first lug 231 towards the front side. Based on this, the hook 2312 may serve as a supporting platform to provide additional bearing force to the second lug 421. This not only provides support to the fan 300, but also effectively implements a pre-fastening function before the fan 300 is further fastened to the combustion chamber 100. During removal of the fan 300, it reduces the possibility of the fan 300 falling off, promoting convenience and efficiency in production and processing.

[0056] As shown in FIG. 3, FIG. 6, and FIG. 7, in an embodiment of this present application, the first snap-fit member 220 is a groove 221 formed at a bottom surface of the bottom plate 200, and the second snap-fit member 410 is a tongue 411 formed at the housing 400. To facilitate the smooth insertion of the tongue 411 into the groove 221 when the fan 300 is moved from the front to the rear to the bottom of the combustion chamber 100, the groove 221 is arranged at the rear side of the air inlet 210, and correspondingly, the tongue 411 is arranged at a rear side of the housing 400. Specifically, an opening direction of the groove 221 is arranged along the front-rear direction of the gas device 1000, and the tongue 411 is formed at a rear surface of the housing 400 and protrudes rearward.

[0057] As shown in FIG. 4 and FIG. 5, in this embodiment of this present application, when the tongue 411 is inserted into the groove 221, the second lug 421 moves into the hook 2312. It can be understood that when the tongue 411 is inserted into the groove 221, the groove 221 provides a first support point for the fan 300. At the same time, the second lug 421 moves into the hook 2312, and the hook 2312 supports the second lug 421 to provide a second support point for the fan 300. In this way, stress borne by the fan 300 is dispersed, such that the fan may be stably mounted on a lower side of the bottom plate 200. The fan 300 may be pre-positioned and further fixed by screws.

[0058] As shown in FIG. 4, in an example, the first lug 231 is arranged at one side of the air inlet 210. Specifically, only one first lug 231 is provided, which may be arranged at a left or right side of the air inlet 210. Correspondingly, only one second lug 421 is provided, and the second lug 421 is arranged corresponding to the first lug 231.

[0059] In another example, two first lugs 231 are provided, and the two first lugs 231 are respectively arranged at two sides of the air inlet 210. Specifically, one first lug 231 is arranged at the left side of the air inlet 210, and the other first lug 231 is arranged at the right side of the air inlet 210. Correspondingly, two second lugs 421 are also provided, and the two second lugs 421 are in positioning fit with the two first lugs 231 in one-to-one correspondence.

[0060] As shown in FIG. 6 and FIG. 7, in an embodiment of this present application, the first lug 231 is provided with a first connection hole 2311, and the first connection hole 2311 penetrates the first lug 231 along the front-rear direction of the gas device 1000. The second lug 421 is provided with a second connection hole 4211, and the second connection hole 4211 penetrates the second lug 421 along the front-rear direction of the gas device 1000. Based on this, when the fan 300 is moved from the front to the rear to the bottom of the combustion chamber 100, the second connection hole 4211 is arranged at a front side of the first connection hole 2311, and the second connection hole 4211 is communicated with the first connection hole 2311. It should be noted that in this embodiment, sizes of the first connection hole 2311 and the second connection hole 4211 match each other.

[0061] In this embodiment of this present application, the gas device 1000 further includes a first fastener (not shown in the figures). The first fastener passes through the first connection hole 2311 and the second connection hole 4211, thereby achieving a fastened connection between the first lug 231 and the second lug 421. In an example, the first fastener is a screw, the first connection hole 2311 is a threaded hole capable of threadedly cooperating with the screw. The second connection hole 4211 is a through hole. Based on this, the screw may pass through the second connection hole 4211 and fit with the first connection hole 2311 to achieve a fastened connection via threaded engagement.

[0062] In another example, the first connection hole 2311 and the second connection hole 4211 are both threaded holes capable of threadedly cooperating with a screw. The screw threadedly fits with each of the second connection hole 4211 and the first connection hole 2311. It should be noted that the first fastener is not limited to a screw, but may be a rivet or the like. The first fastener, the first connection hole 2311, and the second connection hole 4211 may be selected and arranged according to actual conditions, which is not limited in this embodiment.

[0063] As shown in FIG. 6 and FIG. 7, in an embodiment of this present application, the bottom plate 200 is further provided with a third lug 240, the housing 400 is provided with a fourth lug 430, and the fourth lug 430 and the third lug 240 are arranged at the same side of the air inlet 210. Specifically, along the left-right direction of the gas device 1000, the first lug 231 is arranged at one side of the air inlet 210, and the third lug 240 is arranged at the other side of the air inlet 210. In an embodiment, the first lug 231 is arranged at the right side of the air inlet 210, and the third lug 240 is arranged at the left side of the air inlet 210, such that both the left and right sides of the fan 300 can be connected to the bottom plate 200, and the fan 300 is stressed in a balanced manner, thereby improving stability of the fan 300.

[0064] As shown in FIG. 4 and FIG. 5, in this embodiment of this present application, the fourth lug 430 is fixedly connected to the third lug 240. It should be noted that the fourth lug 430 and the third lug 240 may be connected by a snap-fit structure, by a fastener, or in other types of detachable connection manners.

[0065] As shown in FIG. 6 and FIG. 7, in an example, the third lug 240 is provided with a third connection hole 241, and the third connection hole 241 penetrates the third lug 240 along the front-rear direction of the gas device 1000. The fourth lug 430 is provided with a fourth connection hole 431, and the fourth connection hole 431 penetrates the fourth lug 430 along the front-rear direction of the gas device 1000. Based on this, when the fan 300 is moved from the front to the rear to the bottom of the combustion chamber 100, the fourth connection hole 431 is arranged at a front side of the third connection hole 241, and the fourth connection hole 431 is communicated with the third connection hole 241. It should be noted that in this embodiment, sizes of the third connection hole 241 and the fourth connection hole 431 match each other.

[0066] In this embodiment of this present application, the gas device 1000 further includes a second fastener (not shown in the figures). The second fastener passes through the third connection hole 241 and the fourth connection hole 431, thereby achieving a fastened connection between the third lug 240 and the fourth lug 430. In an example, the second fastener is a screw, the third connection hole 241 is a threaded hole capable of threadedly cooperating with the screw, and the fourth connection hole 431 is a through hole. Based on this, the screw may pass through the fourth connection hole 431 and fit with the third connection hole 241 to achieve a fastened connection via threaded engagement.

[0067] In another example, the third connection hole 241 and the fourth connection hole 431 are both threaded holes capable of threadedly cooperating with a screw, and the screw threadedly fits with each of the fourth connection hole 431 and the third connection hole 241. It should be noted that the second fastener is not limited to a screw, but may be a rivet or the like. The second fastener, the third connection hole 241, and the fourth connection hole 431 may be selected and arranged according to actual conditions, which is not limited in this embodiment.

[0068] As shown in FIG. 6, in an embodiment of this present application, a bent edge 250 is arranged at a rear side of the bottom plate 200, and the first snap-fit member 220 is formed at the bent edge 250. Specifically, the bent edge 250 is formed by bending downward, and the groove 221 penetrates the bent edge 250 along the front-rear direction of the gas device 1000, such that the opening direction of the groove 221 is facing forward. It can be understood that in this embodiment, the bent edge 250, the first lug 231, and the third lug 240 protrude from the bottom plate 200 towards the fan 300. Therefore, the bent edge 250, the first lug 231, and the third lug 240 form an mounting area 260 on the bottom surface of the bottom plate 200. The mounting area 260 is arranged around the circumference of the air inlet 210, and the air inlet 210 may be arranged at a central position of the mounting area 260.

[0069] Correspondingly, as shown in FIG. 4, FIG. 6, and FIG. 7, in this embodiment of this present application, the housing 400 is provided with an air outlet member 440, and the air outlet 310 is formed at a central position of the air outlet member 440, and the air outlet member 440 matches the mounting area 260. Specifically, in a top-bottom direction of the gas device 1000, a projection of the air outlet member 440 overlaps with a projection of the mounting area 260, and projection shapes of both are rectangular. When the fan 300 is connected to the bottom plate 200, the air outlet member 440 covers the mounting area 260, such that the air outlet 310 and the air inlet 210 are communicated. The air outlet member 440 is arranged around the connection between the air outlet 310 and the air inlet 210, thereby reducing a possibility of air leakage and ensuring air tightness of the connection between the fan 300 and the combustion chamber 100. The mounting area 260 is shown by a dashed box in FIG. 6.

[0070] As shown in FIG. 7, in this embodiment of this present application, the second lug 421 and the fourth lug 430 are arranged at two sides of the air outlet member 440, and the second snap-fit member 410 is formed at the air outlet member 440. Specifically, the housing 400 is a volute, the second lug 421 protrudes from a right-side surface of the air outlet member 440, the fourth lug 430 protrudes from a surface of the volute housing, and the tongue 411 protrudes from a rear-side surface of the air outlet member 440. It can be understood that the second lug 421, the fourth lug 430, and the tongue 411 enable the air outlet member 440 to be effectively fixed in three different directions, thereby enhancing mounting stability and firmness of the fan 300.

[0071] As shown in FIG. 3 and FIG. 6, in an embodiment of this present application, a mounting plate 500 is arranged at the bottom surface of the bottom plate 200. Specifically, the mounting plate 500 may be connected to the bottom plate 200 by using screws, or may be welded to the bottom plate 200, or may be fastened to the bottom plate 200 in other fixed connection manners. The mounting plate 500 is provided with a through hole 510, the through hole 510 communicates the air inlet 210 and the air outlet 310. The bent edge 250, the first lug 231, and the third lug 240 are all formed at the mounting plate 500. The mounting plate 500 is specifically a sheet metal part, and the through hole 510, the bent edge 250, the first lug 231, and the third lug 240 may be formed at the sheet metal part through an integrated molding process.

[0072] It can be understood that the fan 300 of the gas device 1000 may be selected to support a plurality of specifications. Based on this, a plurality of types of mounting plates 500 may be provided, to ensure that the fan 300 of each specification has a corresponding mounting plate 500. When it is needed to replace a fan 300 of a different specification, only the mounting plate 500 corresponding to the fan 300 needs to be replaced to realize the mounting of the fan 300, enhancing the flexibility and universality of the gas device 1000.

[0073] As shown in FIG. 5, in an embodiment of this present application, an upper end face of the hook 2312 abuts the second lug 421 to support the second lug 421. Specifically, in this embodiment, the upper end face of the hook 2312 may extend along the front-rear direction of the gas device 1000 to form a horizontal plane, thereby providing stable supporting force for the second lug 421.

[0074] As shown in FIG. 8, in an embodiment of this present application, the hook 2312 extends towards the front side of the gas device 1000. It can be understood that the inventor has learned through experiments that if a width w of the hook 2312 along the front-rear direction of the gas device 1000 is excessively small, it is difficult to support the second lug 421, making the second lug 421 prone to disengagement. Therefore, in this embodiment, the width w of the hook 2312 along the front-rear direction of the gas device 1000 satisfies: w≥2 mm, thereby ensuring that the hook 2312 can support the second lug 421, and reducing the possibility of disengagement of the second lug 421.

[0075] An embodiment of this present application further proposes a gas water heater 2000, including the gas device 1000 in the foregoing embodiments.

[0076] It can be understood that the gas water heater 2000 of this embodiment, by adopting the gas device 1000 of the above embodiments, enables the removal / mounting operation of the fan 300 to be performed along the front-rear direction of the gas device 1000. This avoids obstruction from the side wall of the gas water heater 2000 casing 2100 and other components during the fan 300 removal / mounting process. When removing the fan 300, only the front cover plate of the gas water heater 2000 needs to be opened. This achieves removal / mounting of the fan 300 without needing to dismantle the entire casing 2100. In this way, a removal / mounting process of the fan 300 is simplified with lower difficulty and improved efficiency, and thus the maintainability of the gas water heater 2000 is enhanced. Furthermore, by reducing the number of times the casing 2100 of the gas water heater 2000 is dismantled, the risk of decreased structural stability caused by frequent dismantling of the casing 2100 is effectively reduced, thereby enhancing the overall structural stability and durability of the gas water heater 2000.

[0077] The gas water heater 2000 uses all the technical schemes of the gas device 1000 in the foregoing embodiments, and therefore has at least all the beneficial effects brought by the technical schemes in the foregoing embodiments, which are not repeated herein.

[0078] Embodiments of this present application are described in detail above with reference to the accompanying drawings, but this present application is not limited to the foregoing embodiments, and various changes may be made within the knowledge scope of those having ordinary skills in the art without departing from the essence of this present application.

Claims

1. A gas device comprising:a combustion chamber, including a bottom plate provided with an air inlet communicated with an inner cavity of the combustion chamber, the bottom plate including:a first snap-fit member spaced apart from the air inlet along a front-rear direction of the gas device; anda positioning member spaced apart from the air inlet along a left-right direction of the gas device; anda fan, connected to the bottom plate and provided with an air outlet communicated with the air inlet, the fan including a second snap-fit member and a connection member, and the fan being configured such that, when the fan moves to a bottom of the combustion chamber in a front-to-rear direction, the second snap-fit member snaps into the first snap-fit member and the connection member is in positioning fit with the positioning member.

2. The gas device of claim 1, wherein:the positioning member includes a first lug oriented towards the fan;the fan includes a housing, the connection member includes a second lug formed at the housing; andan end of the first lug is bent to form a hook that hooks with the second lug.

3. The gas device of claim 2, wherein:the first snap-fit member includes a groove formed at a bottom surface of the bottom plate;the second snap-fit member includes a tongue formed at the housing; andthe second lug is configured to move into the hook when the tongue is inserted into the groove.

4. The gas device of claim 2, wherein the first lug is arranged at one side of the air inlet.

5. The gas device of claim 2, wherein the first lug is one of two first lugs arranged at two sides of the air inlet, respectively, and the second lug is one of two second lugs provided in positioning fit with the two first lugs, respectively.

6. The gas device of claim 2, further comprising:a fastener;wherein:the first lug is provided with a first connection hole, the second lug is provided with a second connection hole, and the first connection hole and the second connection hole are arranged oppositely along the front-rear direction of the gas device; andthe fastener is configured to pass through the first connection hole and the second connection hole.

7. The gas device of claim 2, wherein:the bottom plate further includes a third lug;along the left-right direction of the gas device, the first lug is arranged at one side of the air inlet and the third lug is arranged at another side of the air inlet; andthe housing includes a fourth lug fixedly connected to the third lug.

8. The gas device of claim 7, further comprising:a fastener;wherein:the third lug is provided with a first connection hole, the fourth lug is provided with a second connection hole, and the first connection hole and the second connection hole are arranged oppositely along the front-rear direction of the gas device; andthe fastener is configured to pass through the first connection hole and the second connection hole.

9. The gas device of claim 7, wherein:a bent edge is arranged at a rear side of the bottom plate, and the first snap-fit member is formed at the bent edge;the bent edge, the first lug, and the third lug form an mounting area on a bottom surface of the bottom plate, the housing includes an air outlet member matching the mounting area, and the air outlet member includes the air outlet; andthe second lug and the fourth lug are arranged at two sides of the air outlet member, and the second snap-fit member is formed at the air outlet member.

10. The gas device of claim 9, wherein:a mounting plate is arranged at the bottom surface of the bottom plate;the mounting plate is provided with a through hole communicating the air inlet and the air outlet; andthe bent edge, the first lug, and the third lug are all formed at the mounting plate.

11. The gas device of claim 2, wherein:an upper end face of the hook abuts the second lug to support the second lug;the hook extends towards a front side of the gas device; anda width of the hook along the front-rear direction of the gas device is greater than or equal to 2 mm.

12. A gas water heater comprising a gas device including:a combustion chamber, including a bottom plate provided with an air inlet communicated with an inner cavity of the combustion chamber, the bottom plate including:a first snap-fit member spaced apart from the air inlet along a front-rear direction of the gas device; anda positioning member spaced apart from the air inlet along a left-right direction of the gas device; anda fan, connected to the bottom plate and provided with an air outlet communicated with the air inlet, the fan including a second snap-fit member and a connection member, and the fan being configured such that, when the fan moves to a bottom of the combustion chamber in a front-to-rear direction, the second snap-fit member snaps into the first snap-fit member and the connection member is in positioning fit with the positioning member.

13. The gas water heater of claim 12, wherein:the positioning member includes a first lug oriented towards the fan;the fan includes a housing, the connection member includes a second lug formed at the housing; andan end of the first lug is bent to form a hook that hooks with the second lug.

14. The gas water heater of claim 13, wherein:the first snap-fit member includes a groove formed at a bottom surface of the bottom plate;the second snap-fit member includes a tongue formed at the housing; andthe second lug is configured to move into the hook when the tongue is inserted into the groove.

15. The gas water heater of claim 13, wherein the first lug is arranged at one side of the air inlet.

16. The gas water heater of claim 13, wherein the first lug is one of two first lugs arranged at two sides of the air inlet, respectively, and the second lug is one of two second lugs provided in positioning fit with the two first lugs, respectively.

17. The gas water heater of claim 13, whereinthe first lug is provided with a first connection hole, the second lug is provided with a second connection hole, and the first connection hole and the second connection hole are arranged oppositely along the front-rear direction of the gas device; andthe gas device further includes a fastener configured to pass through the first connection hole and the second connection hole.

18. The gas water heater of claim 13, wherein:the bottom plate further includes a third lug;along the left-right direction of the gas device, the first lug is arranged at one side of the air inlet and the third lug is arranged at another side of the air inlet; andthe housing includes a fourth lug fixedly connected to the third lug.

19. The gas water heater of claim 18, wherein:the third lug is provided with a first connection hole, the fourth lug is provided with a second connection hole, and the first connection hole and the second connection hole are arranged oppositely along the front-rear direction of the gas device; andthe gas device further includes a fastener configured to pass through the first connection hole and the second connection hole.

20. The gas water heater of claim 18, wherein:a bent edge is arranged at a rear side of the bottom plate, and the first snap-fit member is formed at the bent edge;the bent edge, the first lug, and the third lug form an mounting area on a bottom surface of the bottom plate, the housing includes an air outlet member matching the mounting area, and the air outlet member includes the air outlet; andthe second lug and the fourth lug are arranged at two sides of the air outlet member, and the second snap-fit member is formed at the air outlet member.

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