CN215909417U

CN215909417U - Gas water heater

Info

Publication number: CN215909417U
Application number: CN202122023864.3U
Authority: CN
Inventors: 任富佳; 柳健; 李剑
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-25
Anticipated expiration: 2031-08-25

Abstract

The utility model provides a gas water heater, which relates to the technical field of gas water heaters and comprises a burner, a fan and a connecting mechanism, wherein the burner is arranged on the gas water heater; the connecting mechanism comprises a positioning part and a connecting part, the fan is pre-positioned on the combustor through the positioning part, and the fan is connected on the combustor through the connecting part. According to the utility model, the technical problems of inconvenience in after-sale maintenance and disassembly of the fan of the gas water heater, high material cost of the connecting device and high processing cost are solved, and the technical effects of simplifying the fan disassembly and assembly process and reducing the material cost and the processing cost of the connecting device are achieved.

Description

Gas water heater

Technical Field

The utility model relates to the technical field of gas water heaters, in particular to a gas water heater.

Background

The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. In recent years, although solar water heaters and air energy water heaters have been developed well as low-energy-consumption products, gas water heaters are still favored by many users due to the characteristics of large water output, stable temperature, instant use and safety and the like.

The existing fixing modes of a fan and a burner of a gas water heater mainly comprise two types: one of the water heaters is fixedly connected through a screw, the connection mode causes inconvenience in after-sale maintenance, when the fan needs to be replaced, the internal parts of the water heater often need to be disassembled, the work efficiency of workers is reduced, and meanwhile, the danger caused by replacement of the parts is increased;

another kind of connected mode carries out indirect fixed for other devices such as through keysets, fixed plate, through install the fixed plate additional on the combustor, installs the keysets additional on the fan, and the threaded connection of fan and combustor is accomplished in the cooperation of rethread keysets and fixed plate. Although this method improves efficiency and safety when workers install the device, it needs to add additional adapter plates, fixing plates and other structures, thereby resulting in an increase in material cost and processing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gas water heater to solve the technical problems that in the prior art, a fan of the gas water heater is inconvenient to maintain and disassemble after sale, and a connecting device is high in material cost and processing cost.

The utility model provides a gas water heater, which comprises a burner, a fan and a connecting mechanism, wherein the burner is arranged on the top of the gas water heater; the connecting mechanism comprises a positioning part and a connecting part, the fan is pre-positioned on the combustor through the positioning part, and the fan is connected on the combustor through the connecting part.

Furthermore, location portion is including locating the first setting element on the fan and locating the second setting element on the combustor, and first setting element cooperates with the second setting element in order to realize the prepositioning of fan and combustor.

Furthermore, the first positioning piece is a clamping block arranged on the fan, and the second positioning piece is a clamping hole which is arranged on the combustor and can be matched with the clamping block.

Further, the fan includes main part and connecting plate, has seted up the air outlet in the main part, and the connecting plate is connected on the outer wall that the main part was equipped with air outlet one end, and the fixture block is located on the connecting plate.

Furthermore, the fixture block is protruding for locating on the connecting plate, and bellied lower extreme is sunken formation recess upwards, and the top of recess offsets with the bottom in card hole.

Furthermore, a guide slope corresponding to the protrusion is arranged on the connecting plate, and the guide slope is arranged on one side, close to the combustor, of the connecting plate.

Further, a guide inclined surface is formed on the protrusion, and the guide inclined surface extends from one side close to the connecting plate to one side far away from the connecting plate along the direction from top to bottom.

Furthermore, the protrusion is wedge-shaped, and the guide inclined plane is a convex wedge-shaped surface.

Further, the combustor still includes the first riser, and the card hole sets up on the first riser.

Further, the connecting part comprises a first through hole arranged on the fan and a second through hole arranged on the combustor, and the fan and the combustor are fixedly connected through the first through hole and the second through hole in a threaded manner; the combustor also includes the second riser, and the second through-hole sets up on the second riser.

Furthermore, the combustor is provided with an air inlet, the fan is arranged below the combustor, and the fan and the combustor are communicated with the air inlet through the air outlet; the connecting mechanism further comprises a bottom plate, the bottom plate is arranged below the air inlet and is provided with a ventilation opening corresponding to the air inlet, and the first vertical plate and the second vertical plate are arranged on the bottom plate.

Furthermore, the first vertical plate is a first flanging which is arranged downwards at the edge of the ventilation opening and the same side with the protrusion, and the second vertical plate is a second flanging which is arranged downwards at the edge opposite to the edge where the first flanging is located.

Furthermore, a third through hole is formed in the connecting plate, a fourth through hole is formed in the fan, the connecting plate and the fan are fixedly connected through the third through hole and the fourth through hole in a threaded mode, and a screw avoiding hole is formed in the first flanging.

Furthermore, two side edges of the ventilation opening, which are positioned between the first flanging and the second flanging, are provided with downward side flanging.

Further, one side of the vent is kept away from to first turn-ups, second turn-ups and side turn-ups all is connected with the hem, and the hem is circular-arcly, forms accommodation space between first turn-ups, second turn-ups and the side turn-ups, and the hem extends to one side of keeping away from accommodation space.

The gas water heater provided by the utility model has the beneficial effects that:

According to the utility model, the connecting mechanism is arranged between the combustor and the fan, the connecting mechanism is provided with the positioning part for pre-positioning the fan and the combustor and the connecting part for connecting the fan and the combustor, and the installation and the disassembly of the combustor and the fan can be completed through the connecting mechanism, so that the operation steps of maintaining the gas water heater are simplified, and the material cost and the labor cost are saved. The technical problems of inconvenient after-sale maintenance and disassembly of the fan of the gas water heater, high material cost of the connecting device and high processing cost are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a three-dimensional block diagram of a gas water heater according to an embodiment of the present invention;

FIG. 2 is a front view of a gas water heater provided by an embodiment of the present invention;

FIG. 3 is a rear view of a gas water heater provided by an embodiment of the present invention;

FIG. 4 is a three-dimensional exploded view of a gas water heater provided by an embodiment of the present invention;

FIG. 5 is a schematic view of the assembly of a gas water heater according to an embodiment of the present invention;

FIG. 6 is a three-dimensional structure diagram of the upper connection plate (when the protrusion has a groove) of the gas water heater provided by the embodiment of the present invention;

FIG. 7 is a back view of a three-dimensional structural view of the upper base plate of the gas water heater provided in the embodiment of the present invention;

FIG. 8 is a front view of a three-dimensional structure of the upper base plate of the gas water heater according to the embodiment of the present invention;

FIG. 9 is a back view of a three-dimensional structure of an upper connection plate (with a guiding bevel formed on the protrusion) of a gas water heater provided in an embodiment of the present invention;

FIG. 10 is a front view of a three-dimensional structure of an upper connection plate (with a guiding bevel formed on the protrusion) of a gas water heater provided in an embodiment of the present invention;

FIG. 11 is a schematic view of the assembly of a gas water heater (with the protrusions having a guide ramp) according to an embodiment of the present invention;

fig. 12 is a three-dimensional structural view after the gas water heater (when the projection is provided with the guide slope) provided by the embodiment of the utility model is assembled.

Icon: 100-a burner; 200-a fan; 210-a fourth via; 300-clamping hole; 400-a connecting plate; 410-a third via; 500-bump; 510-a groove; 520-a guide slope; 530-a guide ramp; 600-a bottom plate; 610-a first flange; 611-screw avoiding holes; 620-second flanging; 621-a second via; 630-side flanging; and 640-folding.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The gas water heater is also called as a gas water heater, and uses gas as fuel to transfer heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. In recent years, although air energy water heaters and solar water heaters are well developed as low-energy-consumption products, gas water heaters are still favored by many users due to the characteristics of large water outlet quantity, stable temperature, instant use, higher safety and the like.

The fixed connection mode of current gas heater fan and combustor mainly has two kinds: one of the water heaters is fixedly connected through screws, the connection mode can cause inconvenient after-sale maintenance, when the fan needs to be replaced, the internal parts of the water heater often need to be disassembled, the working efficiency of workers is reduced, and the danger caused by replacing the parts is increased;

Based on the technical scheme, the utility model provides the gas water heater to solve the technical problems that in some technologies, a fan of the gas water heater is inconvenient to maintain and disassemble after sale, and a connecting device is high in material cost and processing cost.

The present embodiment provides a gas water heater, as shown in fig. 1 to 3, including a burner 100, a blower 200 and a connecting mechanism; the connection mechanism includes a positioning portion through which the fan 200 is pre-positioned on the burner 100 and a connection portion through which the fan 200 is connected on the burner 100.

Through the utility model discloses, set up coupling mechanism between combustor 100 and fan 200, coupling mechanism both had been equipped with and had been used for fan 200 and combustor 100 prepositioning location portion, was equipped with the connecting portion of connecting fan 200 and combustor 100 again, and the installation of combustor 100 and fan 200 can all be accomplished through coupling mechanism with the dismantlement, has simplified the operating procedure when gas heater maintains, has saved material cost and cost of labor. The technical problems of inconvenient after-sale maintenance and disassembly, high material cost of the connecting device and high processing cost of the gas water heater fan 200 are solved.

Specifically, in the installation process of the gas water heater, the fan 200 and the burner 100 are pre-positioned through the positioning part, and the positioning part plays a role in auxiliary installation; with the help of the positioning part, the malposition of the fan 200 and the burner 100 is avoided, meanwhile, an installer does not need to manually perform auxiliary positioning when the fan 200 and the burner 100 are fixed, and the installation steps are simplified. After the positioning parts are completely engaged, the blower 200 and the burner 100 are mounted through the connection part.

In this embodiment, the positioning portion includes a first positioning member disposed on the fan 200 and a second positioning member disposed on the burner 100, and the first positioning member and the second positioning member are matched to realize the pre-positioning of the fan 200 and the burner 100. Further, the first positioning element is a clamping block disposed on the blower 200, and the second positioning element is a clamping hole 300 disposed on the burner 100 and capable of being matched with the clamping block. Specifically, the fixture block on the fan 200 is clamped in the clamping hole 300 of the burner 100, the lower end of the fixture block abuts against the lower end of the clamping hole 300, and the burner 100 supports the gravity of the fan 200 through the cooperation of the fixture block and the clamping hole 300, so that the effect of auxiliary installation is achieved.

It should be noted that, the number of the fixture blocks and the fixture holes 300 is the same, and the number of the fixture blocks and the fixture holes 300 may be one or more, as long as the fixture blocks and the fixture holes 300 can be clamped to play a role in auxiliary installation; in this embodiment, there are two latch holes 300. When the size, position or installation environment of the blower 200 and the burner 100 is changed, the number, the interval, etc. of the fixture blocks and the fixture holes 300 may also be adjusted as needed.

Optionally, as shown in fig. 4 and 5, the blower 200 includes a main body and a connecting plate 400, the main body is provided with an air outlet, the connecting plate 400 is connected to an outer wall surface of the main body at an end thereof provided with the air outlet, and the clamping block is disposed on the connecting plate 400. Compare and directly set up the fixture block on fan 200, can simplify fan 200's production flow with the fixture block setting on connecting plate 400, and be more convenient for adjust quantity, position, interval etc. of fixture block according to gas heater's different models, optimized gas heater's suitability.

Specifically, the fixture block is a protrusion 500 provided on the connecting plate 400, and the protrusion 500 is matched with the fixture hole 300 to achieve the pre-positioning of the blower 200 and the burner 100. When the clamping device is installed, the protrusion 500 is pushed into the clamping hole 300, the protrusion 500 and the clamping hole 300 can generate clicking and clicking sounds when clamping is completed, and an installer can know that assembly is successful.

Alternatively, as shown in fig. 6, the lower end of the protrusion 500 is recessed upward to form a groove 510, and the top end of the groove 510 abuts against the bottom end of the card hole 300. The effect of recess 510 is that it is further spacing to fan 200, prevents to take place displacement around fan 200 when carrying out prepositioning to fan 200. Preferably, in this embodiment, the inner surface of the groove 510 is a cambered surface. Under the condition, when the fan 200 needs to be detached during maintenance, the fan 200 only needs to be pushed out downwards slightly after the connection part is detached, the fan 200 can slide out under the action of self gravity, and the detaching step of the gas water heater is further simplified.

Further, as shown in fig. 6, the connection plate 400 is provided with a guide slope 520 corresponding to the protrusion 500, and the guide slope 520 is provided at a side of the connection plate 400 adjacent to the burner 100. Specifically, the slope of the guide slope 520 extends from a side close to the connection plate 400 to a side away from the connection plate 400 along a side close to the burner 100 to a side close to the fan 200. When the blower 200 is connected to the burner 100, the guide slope 520 plays a role of guiding, so that the installation is more time-saving and labor-saving.

Alternatively, as shown in fig. 9 to 12, the protrusion 500 is formed with a guide slope 530, and the guide slope 530 extends from a side close to the connection plate 400 to a side away from the connection plate 400 in a top-to-bottom direction. The guide slope 530 plays a role of guiding when the blower 200 is coupled to the burner 100. Specifically, the upper edge of the guiding inclined plane 530 abuts against the upper edge of the card hole 300, the lower edge of the guiding inclined plane 530 abuts against the lower edge of the card hole 300, and after the pre-positioning is completed, the whole guiding inclined plane 530 is clamped in the card hole 300; when the fan 200 needs to be disassembled, the fan 200 is pushed down slightly after the connection part is removed, the guide slope 530 starts to be separated from the card hole 300 from the upper edge of the card hole 300, and then slides out of the card hole 300 under the gravity of the fan 200. Preferably, in this embodiment, the protrusion 500 has a wedge shape, and the guiding slope 530 is a wedge surface of the protrusion 500.

In this embodiment, the burner 100 further includes a first riser plate, and the fastening hole 300 is disposed on the first riser plate. The connecting part comprises a first through hole arranged on the fan 200 and a second through hole 621 arranged on the combustor 100, and the fan 200 and the combustor 100 are fixedly connected through the first through hole and the second through hole 621 in a threaded manner. The first through holes and the second through holes 621 correspond one to one. It should be noted that, in this embodiment, the number of the first through holes and the number of the second through holes 621 are two, and when the models of the gas water heaters are different, the number and the distance between the first through holes and the second through holes 621 can be adjusted as long as the fan 200 and the burner 100 can be stably connected. Optionally, the burner 100 further comprises a second riser plate, and the second through hole 621 is disposed on the second riser plate. The first and second risers are disposed on the side of the burner 100 connected to the fan 200.

In this embodiment, the combustor 100 is provided with an air inlet, the fan 200 is disposed below the combustor 100, and the fan 200 and the combustor 100 are communicated with the air inlet through the air outlet; as shown in fig. 7 and 8, the connection mechanism further includes a bottom plate 600, the bottom plate 600 is disposed below the air inlet and provided with a vent corresponding to the air inlet, and the first vertical plate and the second vertical plate are both disposed on the bottom plate 600. Specifically, the air inlet and the air outlet have the same size, the fan 200 and the burner 100 are hermetically connected, and the fan 200 blows air into the burner 100 from the connection. The vent on the bottom plate 600 corresponds to the air inlet, that is, a vent is formed at a position on the bottom plate 600 corresponding to the air inlet, so that the fan 200 can pass through the vent and be connected with the combustor 100.

When the fan 200 and the base plate 600 are installed, the base plate 600 is fixedly connected to the combustor 100 in advance in a welding or threaded connection mode, and the first vertical plate and the second vertical plate are arranged on the base plate 600, so that the pre-positioning of the fan 200 and the base plate 600 is completed after the clamping of the protrusions 500 and the clamping holes 300 is completed, namely the pre-positioning of the fan 200 and the combustor 100 is completed; after the first through hole and the second through hole 621 are screwed, the blower 200 and the base plate 600, that is, the blower 200 and the burner 100 are fixedly connected.

Preferably, the first riser is the first turn-ups 610 that the border of vent and arch 500 homonymy set up downwards, and the second riser is the second turn-ups 620 that sets up downwards with the relative border in first turn-ups 610 place border. Under this condition, first turn-ups 610 and second turn-ups 620 are the decurrent turn-ups in vent border, are being connected fan 200 with combustor 100 promptly, and first turn-ups 610 and second turn-ups 620 can laminate the lateral wall of fan 200 air outlet one side, when supplementary fan 200's installation, have carried out further spacing to fan 200. On the other hand, when the bottom plate 600 is produced, the flange is directly formed at the edge of the ventilation opening to form a flange, so that compared with a vertical plate, the flange is much easier to arrange, the production flow of the bottom plate 600 is simplified, and the labor cost is saved.

Further, the first cuff 610 is capable of being elastically deformed. Specifically, a space for accommodating the fan 200 is formed between the first flange 610 and the second flange 620, and in the process of installing the fan 200 into the space, the guide slope 520 or the guide inclined plane 530 provided on the protrusion 500 gradually pushes up the first flange 610 in the process of installing, and finally the protrusion 500 and the locking hole 300 are clamped and then rebound to the original position under the action of elastic force, so that the fan 200 is clamped between the first flange 610 and the second flange 620.

In this embodiment, the connecting plate 400 is provided with a third through hole 410, the fan 200 is provided with a fourth through hole 210, the connecting plate 400 and the fan 200 are fixed by the third through hole 410 and the fourth through hole 210 through threaded connection, and the first flange 610 is provided with a screw avoiding hole 611. Specifically, the number of the third through holes 410, the number of the fourth through holes 210, and the number of the screw avoiding holes 611 are all equal and are in one-to-one correspondence, and in the embodiment, the number of the third through holes, the number of the fourth through holes, and the number of the screw avoiding holes 611 are two, and when the types or the installation environments of the gas water heaters are different, the adjustment can be performed according to actual conditions.

After the installation is completed, the fan 200 is located between the first flange 610 and the second flange 620, and the connecting plate 400 attached to the fan 200 is located on one side of the space between the first flange 610 and the second flange 620, which is close to the first flange 610. In this case, the screw connecting the third through-hole 410 and the fourth through-hole 210 may interfere with the first flange 610, preventing the connection of the blower 200 to the burner 100. The screw avoiding hole 611 is formed in the corresponding position of the screw on the first flanging 610, so that the interference between the first flanging 610 and the screw is avoided, and the situation can be avoided.

Two side edges of the ventilation opening between the first flange 610 and the second flange 620 are provided with downward side flanges 630. The side flanges 630 may further limit the sides of the blower 200. Further, one side that first turn-ups 610, second turn-ups 620 and side turn-ups 630 keep away from the vent all is connected with hem 640, and hem 640 is circular-arcly, forms accommodation space between first turn-ups 610, second turn-ups 620 and the side turn-ups 630, and hem 640 extends to the one side of keeping away from accommodation space.

When installing fan 200, pack into accommodation space with fan 200 air outlet one side, because accommodation space's entry cross-section is the same with the air outlet cross-section, probably because bring the inconvenience of butt joint to the inaccuracy, under this condition, the hem 640 to keeping away from one side extension of accommodation space can reduce the degree of difficulty of packing into, plays the guide effect.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas water heater, comprising: the device comprises a burner (100), a fan (200) and a connecting mechanism;

the connecting mechanism comprises a positioning part and a connecting part, the fan (200) is positioned on the combustor (100) in a pre-positioning mode through the positioning part, and the fan (200) is connected to the combustor (100) through the connecting part.

2. The gas water heater of claim 1, wherein the positioning portion comprises a first positioning member disposed on the blower (200) and a second positioning member disposed on the burner (100), the first positioning member and the second positioning member cooperating to achieve pre-positioning of the blower (200) and the burner (100).

3. The gas water heater of claim 2, wherein the first positioning element is a block provided on the blower (200), and the second positioning element is a block hole (300) provided on the burner (100) and capable of cooperating with the block.

4. The gas water heater of claim 3, wherein the blower (200) comprises a main body and a connecting plate (400), the main body is provided with an air outlet, the connecting plate (400) is connected to an outer wall surface of the main body at one end provided with the air outlet, and the clamping block is arranged on the connecting plate (400).

5. The gas water heater of claim 4, wherein the clamping block is a protrusion (500) arranged on the connecting plate (400), the lower end of the protrusion (500) is recessed upwards to form a groove (510), and the top end of the groove (510) is abutted against the bottom end of the clamping hole (300).

6. The gas water heater according to claim 5, characterized in that said connection plate (400) is provided with a guide slope (520) corresponding to said protrusion (500), said guide slope (520) being provided on a side of said connection plate (400) adjacent to said burner (100).

7. The gas water heater of claim 5, wherein the projection (500) is formed with a guide slope (530), the guide slope (530) extending in a top-to-bottom direction from a side near the connection plate (400) to a side away from the connection plate (400).

8. The gas water heater of claim 7, wherein said protrusion (500) is wedge-shaped, and said guide ramp (530) is a wedge-shaped surface of said protrusion (500).

9. The gas water heater of any one of claims 5 to 8, wherein the burner (100) further comprises a first riser plate, the snap hole (300) being provided on the first riser plate.

10. The gas water heater of claim 9, wherein the connecting portion comprises a first through hole provided on the blower (200) and a second through hole (621) provided on the burner (100), and the blower (200) and the burner (100) are fixed by the first through hole and the second through hole (621) through screw connection;

the burner (100) further comprises a second riser, and the second through hole (621) is provided in the second riser.

11. The gas water heater of claim 10, wherein the burner (100) is provided with an air inlet, the fan (200) is arranged below the burner (100), and the fan (200) and the burner (100) are communicated with the air inlet through the air outlet;

coupling mechanism still includes bottom plate (600), bottom plate (600) set up air intake below and be equipped with the corresponding vent of air intake, first riser with the second riser all sets up on bottom plate (600).

12. The gas water heater of claim 11, wherein the first riser is a first flange (610) disposed downward from an edge of the vent on the same side as the protrusion (500), and the second riser is a second flange (620) disposed downward from an edge opposite to the edge where the first flange (610) is located.

13. The gas water heater of claim 12, wherein the connecting plate (400) is provided with a third through hole (410), the fan (200) is provided with a fourth through hole (210), the connecting plate (400) and the fan (200) are fixed by the third through hole (410) and the fourth through hole (210) through threaded connection, and the first flange (610) is provided with a bolt avoiding hole (611).

14. The gas water heater of claim 12, wherein downward side flanges (630) are provided on both side edges of the vent opening between the first flange (610) and the second flange (620).

15. The gas water heater of claim 14, wherein a folded edge (640) is connected to each of the first folded edge (610), the second folded edge (620) and the side folded edge (630) away from the ventilation opening, the folded edge (640) is arc-shaped, an accommodating space is formed among the first folded edge (610), the second folded edge (620) and the side folded edge (630), and the folded edge (640) extends towards one side away from the accommodating space.