CN218864171U - Combustor shell and gas water heater - Google Patents

Abstract

The application belongs to the technical field of water heaters, and particularly relates to a combustor shell and a gas water heater. This application aims at solving the loaded down with trivial details, the high problem of flue gas leakage risk of current combustor shell screw connection. The utility model provides a combustor shell includes: the U-shaped plate comprises a front side plate, a rear side plate and a U-shaped plate, wherein a first side edge of the U-shaped plate is riveted with the rear side plate; the second side edge of the U-shaped plate is in threaded connection with the front side plate, and the first sealing gasket is arranged between the second side edge of the U-shaped plate and the front side plate, so that the assembly efficiency can be improved, initial positioning can be provided for the threaded connection of the front side plate and the U-shaped plate, and screws can be conveniently screwed in; the structural stability and reliability of the combustor shell are guaranteed. The top of preceding curb plate top and posterior lateral plate all protrudes in the U template, and the protrusion forms the heat transfer space between preceding curb plate and the posterior lateral plate of U template part, and preceding curb plate, posterior lateral plate and U template form the combustion space, and the high temperature flue gas of being convenient for gets into the heat transfer space and carries out the heat transfer.

Description

Combustor shell and gas water heater

Technical Field

The application belongs to the technical field of water heaters, and particularly relates to a combustor shell and 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 to achieve the purpose of preparing hot water.

The outer shell of the gas water heater is internally provided with a combustor inner shell, gas is combusted in the combustor outer shell to generate high-temperature flue gas, and the high-temperature flue gas exchanges heat with the heat exchange device to achieve the purpose of heating water. Current combustor shell includes the polylith curb plate, all through bolted connection between per two blocks of curb plates, and is provided with sealed the pad between two blocks of curb plates, guarantees that the high temperature flue gas seals in combustor shell and not leak outward.

However, the screw connection is not only cumbersome and inefficient, but also has many screw connection positions, resulting in high smoke leakage risk.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, be loaded down with trivial details, the inefficiency of solving current combustor shell screwed connection promptly, the screwed connection position leads to the flue gas more and leaks the problem that the risk is high, this application provides a combustor shell and gas heater.

The burner housing includes: the sealing device comprises a front side plate, a rear side plate and a U-shaped plate, wherein a first side edge of the U-shaped plate is riveted with the rear side plate, a second side edge of the U-shaped plate is in threaded connection with the front side plate, and a first sealing gasket is arranged between the front side edge of the U-shaped plate and the front side plate; the top end of the front side plate and the top end of the rear side plate protrude out of the U-shaped plate, a heat exchange space for heat exchange is formed between the parts, protruding out of the U-shaped plate, of the front side plate and the rear side plate, and a combustion space for combustion of the combustor is formed by the front side plate, the rear side plate and the U-shaped plate.

In an optional technical scheme of the burner housing, the bottom edge of the rear side plate and partial edges of two side edges respectively connected to two sides of the bottom edge of the rear side plate are bent towards the U-shaped plate to form a first U-shaped flanging, and the first U-shaped flanging is opened towards the U-shaped plate; the U-shaped plate comprises a bottom plate part, a first plate part and a second plate part which are integrally formed, and the first plate part and the second plate part are oppositely arranged at two ends of the bottom plate part at intervals; the rear side plate and the front side plate are both protruded out of the first plate part and the second plate part; the first plate part, the second plate part and the bottom plate part are respectively bent outwards towards the side edges of the rear side plate to form first folded edges; the first folding edge is accommodated in the first U-shaped flanging and is riveted with the first U-shaped flanging.

In an optional technical scheme of the burner housing, the rear side plate includes a first plate body, the bottom edge of the first plate body and partial edges of two side edges connected to two sides of the bottom edge of the first plate body face towards the U-shaped plate and are bent and extended to form a connecting portion, the connecting portion deviates from the first plate body and is bent and extended to form the first U-shaped flange, an opening of the first U-shaped flange is opposite to the connecting portion, and an opening end of the first U-shaped flange is spaced from the connecting portion.

In an optional technical scheme of the burner housing, the front side edge of the first plate portion and the front side edge of the second plate portion respectively deviate from the front side plate and are bent and extended to form a second folded edge, the front side edge of the bottom plate portion is bent and extended upwards to form a third folded edge, the third folded edge and the second folded edge are both in threaded connection with the front side plate, and the first sealing gaskets are respectively arranged between the second folded edge and the front side plate and between the third folded edge and the front side plate.

In an optional technical solution of the burner housing, the second flange has a reinforcing groove, and the reinforcing groove is located at a joint of the second flange and the first plate portion, and a joint of the second flange and the second plate portion; the reinforcing grooves are arranged in a plurality of numbers, and the reinforcing grooves are arranged at intervals along the length direction of the second folded edge.

In an optional technical scheme of the burner housing, two side edges of the front side plate are respectively bent and extended towards the rear side plate to form a first flange, the first flange is abutted against the second flange, and the first flange protrudes out of the second flange; the bottom edge of the front side plate bends and extends towards the rear side plate to form a second flange, and the second flange is abutted to the bottom plate portion.

In an optional technical solution of the above burner housing, a top end of the first plate portion is bent and extended away from the second plate portion, and a top end of the second plate portion is bent and extended away from the second plate portion, both of which form a first connecting edge; the top edge of the rear side plate deviates from the front side plate and bends and extends to form a third connecting edge; the parts of the two side edges of the top edge connected with the rear side plate, which protrude out of the first plate part, are respectively provided with a second connecting edge; the first connecting edge, the second connecting edge and the third connecting edge are all used for being fixedly connected with the heat exchange device.

In an optional technical solution of the above burner housing, the first plate portion is provided with a first reinforcing protrusion, and the first reinforcing protrusion protrudes away from the second plate portion; the second plate portion is provided with a second reinforcing protrusion, and the second reinforcing protrusion deviates from the first plate portion in a protruding manner.

In the optional technical scheme of above-mentioned combustor shell, the combustor shell still includes the wall mount frame, the wall mount frame includes horizontal plate and vertical board, the front end of horizontal plate with the bottom fixed connection of U template, the rear end of horizontal plate is provided with dodges the recess of dodging of U template riveting position, the rear end bending downwards that dodges the recess extends and forms vertical board, be provided with the hanging mounting hole on the vertical board.

The gas water heater includes: the combustor comprises a heat exchange device, a combustor inner shell and the combustor outer shell, wherein the combustor inner shell is arranged at the bottom in the combustor outer shell, and the heat exchange device is arranged at the top of the combustor outer shell.

As can be appreciated by those skilled in the art, the burner housing of the gas water heater of the present application includes: preceding curb plate, posterior lateral plate and U template, preceding curb plate and posterior lateral plate relative interval set up. The first side edge of the U-shaped plate is riveted with the rear side plate; the second side of U type board and preceding curb plate threaded connection, and be provided with first sealed pad between the preceding side of U type board and the preceding curb plate to make the combustor shell sealed. According to the embodiment of the application, the rear side plate is riveted with the first side edge of the U-shaped plate, so that the assembly efficiency can be improved, initial positioning can be provided for threaded connection of the front side plate and the U-shaped plate, and screws can be conveniently screwed in; the front side plate is in threaded connection with the U-shaped plate, so that the structural stability and reliability of the combustor shell are guaranteed. The top of preceding curb plate top and posterior lateral plate all protrudes in the U template, protrudes and forms the heat transfer space that makes heat transfer device heat transfer usefulness between the preceding curb plate of U template part and the posterior lateral plate, can reduce the hookup location of heat transfer device and combustor shell, reduces the risk that the flue gas leaked, can also improve gas heater's packaging efficiency. The front side plate, the rear side plate and the U-shaped plate form a combustion space for the burner to burn. So, preceding curb plate and posterior lateral plate all regard as the lateral wall in combustion space and heat transfer space simultaneously for the high temperature flue gas that the combustor burning produced can unobstructed entering heat transfer space, so that heat transfer device carries out the heat transfer.

Drawings

Alternative embodiments of the burner housing and the gas water heater of the embodiments of the present application are described below with reference to the accompanying drawings. The attached drawings are as follows:

FIG. 1 is an exploded view of a gas water heater provided in an embodiment of the present application;

FIG. 2 is an exploded view of a gas water heater provided in an embodiment of the present application with an outer shell removed;

FIG. 3 is a front view of a combustor casing provided by an embodiment of the present application;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of the region P in FIG. 4;

FIG. 6 is an enlarged schematic view of region Q of FIG. 4;

FIG. 7 is a sectional view taken along line B-B of FIG. 3;

FIG. 8 is an enlarged view of region M of FIG. 7;

FIG. 9 is a schematic structural diagram of a U-shaped plate of a burner housing provided by an embodiment of the present application;

FIG. 10 is a rear view of a rear side panel provided by an embodiment of the present application;

FIG. 11 is a cross-sectional view taken at C-C of FIG. 10;

fig. 12 is an enlarged view of the region N in fig. 11.

In the drawings: 100: a burner housing; 101: a heat exchange space; 102: a combustion space; 110: a front side plate; 111: a first flange; 112: a second flange; 120: a rear side plate; 121: a first U-shaped flanging; 122: a first plate body; 123: a connecting portion; 124: a second connecting edge; 125: a third connecting edge; 130: a U-shaped plate; 131: a first plate portion; 1311: a first reinforcing protrusion; 132: a second plate portion; 1321: a second reinforcing protrusion; 133: a bottom plate portion; 1331: an air inlet; 1332: a mounting seat; 1333: a first plate body portion; 1334: a second plate body portion; 1335: a notch; 134: a first folded edge; 135: a second folded edge; 136: thirdly, folding edges; 137: reinforcing the grooves; 138: a first connecting edge; 140: a first gasket; 150: a wall mount; 151: a horizontal plate portion; 152: a vertical plate portion; 153: avoiding the groove; 200: a combustor inner casing; 300: a heat exchange device; 400: a fan; 500: an outer housing.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining technical principles of the embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application. And can be adjusted as needed by those skilled in the art to suit particular applications.

Furthermore, it should be noted that in the description of the embodiments of the present application, the terms "inside", "outside", and the like indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, but do not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

Furthermore, it should be noted that, in the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the examples of the present application can be understood by those skilled in the art as appropriate.

The shell of the gas water heater is internally provided with a fire grate, gas is combusted in the shell of the combustor to generate high-temperature flue gas, and the high-temperature flue gas exchanges heat with the heat exchange device to realize the purpose of heating water. The existing burner shell comprises a plurality of side plates, wherein every two side plates are connected through screws, a sealing gasket is arranged between every two side plates, and the high-temperature flue gas is sealed in the burner shell and does not leak. However, the screw connection is not only cumbersome and inefficient, but also has many screw connection positions, resulting in high risk of smoke leakage.

In view of this, the combustor casing provided by the embodiment of the present application includes a front side plate, a rear side plate and a U-shaped plate, where the front side plate is in threaded connection with a front side edge of the U-shaped plate, a first sealing pad is arranged between the front side plate and a second side edge of the U-shaped plate, and the rear side plate is riveted with the first side edge of the U-shaped plate; the U template is integrative, can reduce the equipment process of combustor shell, improves the packaging efficiency, still is favorable to reducing the flue gas and leaks the risk. The rear side plate is riveted with the rear side edge of the U-shaped plate, so that the assembly efficiency can be improved, initial positioning can be provided for threaded connection of the front side plate and the U-shaped plate, and screws can be conveniently screwed in; the front side plate is in threaded connection with the U-shaped plate, so that the structural stability and reliability of the combustor shell are guaranteed. And, the top of preceding curb plate and the top of posterior lateral plate upwards extend the protrusion and form the heat transfer space in the both ends of U template for installation gas heater's heat transfer device, preceding curb plate, posterior lateral plate and U template form the combustion space, so the combustion space is an organic piece with at least partial lateral wall in heat transfer space, when guaranteeing the heat transfer of flue gas flow, reduces the hookup location of heat transfer device and combustor shell, further reduces the risk that the flue gas leaked.

The following describes optional technical solutions of the burner housing and the gas water heater according to the embodiments of the present application with reference to the drawings.

It should be noted that, for the convenience of description, in the embodiment of the present application, the side of the gas water heater facing the user, that is, the side where the operation panel is disposed, is defined as the "front" side; the side near the ground is the "bottom" side. In the drawings, the X-axis direction represents the left-right direction, the Y-axis direction represents the front-rear direction, and the Z-axis direction represents the up-down direction.

Referring to fig. 1 and 2, fig. 1 is an exploded view of a gas water heater according to an embodiment of the present application; fig. 2 is an exploded view of a gas water heater provided in an embodiment of the present application with an outer shell removed. As shown in fig. 1 and 2, an embodiment of the present application provides a gas water heater, which includes: the combustor comprises a heat exchange device 300, a combustor inner shell 200 and a combustor outer shell 100, wherein the combustor inner shell 200 is installed at the bottom in the combustor outer shell 100, and the heat exchange device 300 is installed at the top of the combustor outer shell 100. Thus, the fire grate is arranged in the combustor inner shell 200, high-temperature flue gas generated by combustion of the fire grate can flow through the heat exchange device 300, the heat exchange device 300 exchanges heat with the high-temperature flue gas to heat water, and the flue gas after heat exchange is discharged.

The gas water heater of the embodiment of the application further comprises a fan 400, wherein the fan 400 is installed at the bottom of the burner outer shell 100, and provides air for the combustion of the burner inner shell 200 on the one hand, and provides air cooling air for the cooling of the burner outer shell 100 and the burner inner shell 200 on the other hand.

The gas water heater of the embodiment of the application further comprises an outer shell 500, and the combustor outer shell 100, the heat exchange device 300, the combustor inner shell 200 and the fan 400 are all installed in the outer shell 500, so that the effect of protecting the internal structure of the gas water heater is achieved, and an installation space is provided for the internal structure of the gas water heater. Of course, an air inlet is provided at the rear portion of the outer casing 500, and the external air enters the inside of the outer casing 500 through the air inlet and enters the inside of the burner housing 100 through the fan 400 under the action of the fan 400.

With continued reference to fig. 2, embodiments of the present application provide a combustor casing 100 comprising: the front plate 110, the rear plate 120 and the U-shaped plate 130, the front plate 110 and the rear plate 120 are oppositely arranged at intervals. The first side of the U-shaped plate 130 is riveted with the rear side plate 120, for example, the first side of the U-shaped plate 130 and the rear side plate 120 form riveting flanges, respectively; the second side edge of the U-shaped plate 130 is in threaded connection with the front side plate 110, for example, the second side edge of the U-shaped plate 130 and the front side plate 110 are both provided with folded edges, and the folded edges are connected by screws; and a first gasket 140 is provided between the second side of the U-shaped plate 130 and the front plate 110 to seal the burner housing 100. Wherein, a first side edge of the U-shaped plate 130 is close to the rear side plate 120, and a second side edge of the U-shaped plate 130 is close to the front side plate 110.

According to the embodiment of the application, the rear side plate 120 is riveted with the first side edge of the U-shaped plate 130, so that the assembly efficiency can be improved, initial positioning can be provided for threaded connection of the front side plate 110 and the U-shaped plate 130, and screws can be conveniently screwed in; the front side plate 110 is screw-coupled with the U-shaped plate 130, which is advantageous to ensure structural stability and reliability of the burner housing 100.

FIG. 3 is a front view of a combustor casing provided by an embodiment of the present application; fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 3. Referring to fig. 3 and 4, the top ends of the front side plate 110 and the rear side plate 120 protrude from the U-shaped plate 130, and a heat exchange space 101 is formed between the protruding portions of the front side plate 110 and the rear side plate 120 protruding from the U-shaped plate 130, and is used for installing the heat exchange device 300, so that the heat exchange device 300 exchanges heat. The top end of the front side plate 110 extends upwards to protrude out of the U-shaped plate 130, and the top end of the rear side plate 120 extends upwards to protrude out of the U-shaped plate 130 to serve as a partial cavity wall of a heat exchange cavity of the heat exchange device 300, so that the connecting position of the heat exchange device 300 and the combustor shell 100 can be reduced, the risk of flue gas leakage is reduced, and the assembling efficiency of the gas water heater can be improved. The front side plate 110, the rear side plate 120, and the U-shaped plates 130 form a combustion space 102 for mounting the inner burner housing 200 to burn a fire grate in the inner burner housing 200. Thus, the front side plate 110 and the rear side plate 120 are both used as the side walls of the combustion space 102 and the heat exchange space 101, so that high-temperature flue gas generated by fire emission can smoothly enter the heat exchange space 101, and the heat exchange device 300 can exchange heat.

Referring to fig. 2, the U-shaped board 130 is substantially U-shaped, the U-shaped board 130 of the embodiment of the present application is a single piece, and includes a bottom board 133, a first board 131, and a second board 132 that are integrally formed, the first board 131 and the second board 132 are oppositely disposed at two ends of the bottom board 133 at an interval, wherein the first board 131 is disposed at a left end of the bottom board 133, the second board 132 is disposed at a right end of the bottom board 133, and top ends of the first board 131 and the second board 132 may be flush. Referring to fig. 4, the rear side plate 120 and the front side plate 110 are protruded from the first plate portion 131 and the second plate portion 132. The U-shaped plate 130 of the embodiment of the application is an integrated piece, so that the assembling process of the combustor shell 100 can be reduced, the assembling efficiency is improved, and the reduction of the smoke leakage risk is facilitated.

With reference to fig. 9, fig. 9 is a schematic structural diagram of a U-shaped plate of a burner housing according to an embodiment of the present application. First reinforcing protrusions 1311 are provided at the first plate portion 131, the first reinforcing protrusions 1311 protruding away from the second plate portion 132, the first reinforcing protrusions 1311 protruding leftward in the direction of the drawing. With this arrangement, the first plate portion 131 can be reinforced, and the combustor inner casing 200 can be prevented from being mounted by being protruded into the combustor outer casing 100.

The shape, arrangement, and number of the first reinforcing protrusions 1311 are not limited in the embodiments of the present application. For example, the first reinforcing protrusion 1311 may have a long bar shape, a circular shape, an oval shape, or the like. The first reinforcing protrusions 1311 may be arranged at intervals in the front-rear direction (corresponding to the Y-axis direction in the drawing), and the first reinforcing protrusions 1311 may be arranged in a matrix on the first plate portion 131. With reference to fig. 2 and 9, first reinforcing protrusions 1311 extending in the vertical direction (corresponding to the Z-axis direction in the drawings) are arranged at intervals in the front-rear direction (corresponding to the Y-axis direction in the drawings); a first reinforcing protrusion 1311 extending in the front-rear direction (corresponding to the Y-axis direction in the drawing) is also provided at the bottom of the first plate portion 131.

The second plate section 132 is provided with a second reinforcing protrusion 1321, the second reinforcing protrusion 1321 protruding away from the first plate section 131, the second reinforcing protrusion 1321 protruding rightward in the direction shown in the drawing. With this arrangement, it is possible to reinforce the second plate portion 132 and prevent the inner housing 200 from being mounted by protruding into the burner outer housing 100.

The shape, number, and arrangement of the second reinforcing protrusions 1321 may be the same as those of the first reinforcing protrusions 1311, and thus, will not be described in detail.

A gap is generally provided between the burner outer casing 100 and the burner inner casing 200 inside thereof, so that a part of air passes through, which functions to reduce the temperature of the burner outer casing 100 and the burner inner casing 200. Alternatively, the first reinforcing protrusion 1311 and the second reinforcing protrusion 1312 may protrude toward the combustor inner casing 200, and the first reinforcing protrusion 1311 and the second reinforcing protrusion 1312 may abut against the combustor inner casing 200, so that the first reinforcing protrusion 1311 and the second reinforcing protrusion 1312 may serve to reinforce and maintain a gap between the combustor outer casing 100 and the combustor inner casing 200 to ensure air circulation and cooling. At this time, the first reinforcing protrusions 1311 and the second reinforcing protrusions 1321 extend in the vertical direction, and the circulation of air for cooling is prevented from being blocked.

The first reinforcing protrusion 1311 is arranged on the first plate portion 131, and the second reinforcing protrusion 1321 is arranged on the second plate portion 132, so that the U-shaped plate 130 is reinforced, and the occurrence of gaps caused by deformation of two sides of the U-shaped plate 130 is avoided.

With continued reference to fig. 9, the bottom plate 133 is provided with an air inlet 1331, and the air inlet 1331 is communicated with the fan 400 to provide air for gas combustion. An installation seat 1332 is arranged at the edge of the air inlet 1331, and the installation seat 1332 is fixedly connected with the shell of the fan 400, so as to support and fix the fan 400. Illustratively, the mounting 1332 is fixedly connected to the housing of the blower 400 by screws. The bottom plate portion 133 is further provided with a notch 1335 for mounting the gas distribution rod of the inner burner shell 200.

In some possible implementations, with reference to fig. 3 and 9, the bottom plate portion 133 includes a first plate portion 1333 and a second plate portion 1334, the first plate portion 1333 is provided with an air inlet 1331, a right end of the first plate portion 1333 is inclined upward to form the second plate portion 1334, and the second plate portion 1334 is arranged such that a cross-sectional area of a cavity between the combustor inner casing 200 and the bottom plate portion 133 is gradually reduced from the air inlet 1331 to the right end, and a wind speed is increased, which is beneficial to improving uniformity of air inlet between the rows of the combustor inner casing 200.

Fig. 5 is an enlarged view of the region P in fig. 4, and fig. 7 is a sectional view taken along line B-B in fig. 3. With reference to fig. 5 and 7, in some possible implementations, the bottom edge of the rear side plate 120 and two side edge portions connected to two sides of the bottom edge of the rear side plate 120 are bent toward the U-shaped plate 130 to form a first U-shaped flange 121, and the first U-shaped flange 121 is bent toward the U-shaped plate 130. In the angle shown in the drawing, the bottom edge, part of the left side edge and part of the right side edge of the rear side plate 120 are all bent to form a first U-shaped flange 121, the first U-shaped flange 121 is opened inwards, and the term "inner" refers to the inner side of the burner housing 100; the first U-shaped flange 121 on the bottom side of the rear side plate 120 is opened upward, the first U-shaped flange 121 on the left side of the rear side plate 120 is opened rightward, and the first U-shaped flange 121 on the right side of the rear side plate 120 is opened leftward. So set up, can be so that riveting position is located combustor shell 100 inside, do benefit to the rule that keeps the combustor shell 100 outside, avoid fish tail operating personnel in the assembling process. It should be noted that a first U-shaped flange 121 is disposed at a portion of the left side of the rear panel 120 facing the first panel 131, and a first U-shaped flange 121 is disposed at a portion of the right side of the rear panel 120 facing the second panel 132.

With continued reference to fig. 5, the first plate portion 131, the second plate portion 132, and the bottom plate portion 133 are respectively bent toward the side of the rear plate portion 120 to form a first folded edge 134, in the direction shown in the drawing, the rear side of the first plate portion 131, the rear side of the second plate portion 132, and the rear side of the bottom plate portion 133 are respectively bent outward to form a first folded edge 134, where "outward" refers to the outside of the burner housing 100, wherein the rear side of the first plate portion 131 is bent leftward to form the first folded edge 134, the rear side of the second plate portion 132 is bent rightward to form the first folded edge 134, and the rear side of the bottom plate portion 133 is bent downward to form the first folded edge 134.

As shown in fig. 5, the first folded edge 134 is accommodated in the first U-shaped folded edge 121, and the first folded edge 134 is riveted with the first U-shaped folded edge 121, so that the rear side edge of the U-shaped plate 130 is fixedly connected with the rear side plate 120, and a sealing gasket is not required to be additionally arranged, thereby facilitating simplification of the structure and the assembly process and improving the assembly efficiency.

First U type turn-ups 121 of this application embodiment is to the inboard opening of combustor shell 100, and its cladding is in the outside of first hem 134, and first U type turn-ups 121 is the arc rather than the tip that the opening is relative for the edge smoothness of combustor shell 100, no sharp-pointed edge avoid fish tail operating personnel or spare part in the assembling process.

FIG. 10 is a rear view of a rear side panel provided by an embodiment of the present application; FIG. 11 is a cross-sectional view taken at C-C of FIG. 10; fig. 12 is an enlarged view of the region N in fig. 11.

With reference to fig. 10 to 12, the rear side plate 120 includes a first plate body 122, a bottom edge of the first plate body 122, and partial edges of two side edges connected to the bottom edge of the first plate body 122, and the two side edges are bent and extended towards the U-shaped plate 130 to form connecting portions, in the direction shown in the drawing, the bottom edge, partial left side edge, and partial right side edge of the first plate body 122 are respectively bent and extended backwards to form connecting portions 123, the connecting portions 123 are bent and extended away from the first plate body 122 to form first U-shaped flanges 121, openings of the first U-shaped flanges 121 are opposite to the connecting portions 123, and an opening end of the first U-shaped flanges 121 is spaced from the connecting portions 123, so that the first flanges 134 can be inserted into the first U-shaped flanges 121 conveniently. In the embodiment of the application, the connecting part 123 is arranged, so that the rear side plate 120 has a step structure, which is beneficial to improving the structural strength of the rear side plate 120; and the connecting part 123 is arranged, so that the first plate body 122 can be prevented from being deformed when the first U-shaped flanging 121 is formed by bending.

Alternatively, the rear side of the first plate portion 131, the rear side of the second plate portion 132, and the rear side of the bottom plate portion 133 are bent to form a second U-shaped flange, and the left side, the right side, and the bottom of the rear plate 120 are bent to form riveting flanges, respectively, and the riveting flanges are riveted with the second U-shaped flange. Of course, the manner of riveting the rear side plate 120 and the U-shaped plate 130 is not limited to the above, and for example, the riveting position of the rear side plate 120 and the U-shaped plate 130 may be an S-shaped riveting edge.

Fig. 6 is an enlarged view of a region Q in fig. 4, and fig. 8 is an enlarged view of a region M in fig. 7.

With reference to fig. 8, in the embodiment of the present invention, the front side edge of the first plate portion 131 and the front side edge of the second plate portion 132 are respectively bent and extended away from the front side plate 110 to form a second flange 135, the front side edge of the first plate portion 131 is bent and extended leftward to form a second flange 135, and the front side edge of the second plate portion 132 is bent and extended rightward to form a second flange 135. Referring to fig. 6, the front side of the bottom plate 133 is bent upward to form a third folded edge 136, the third folded edge 136 and the second folded edge 135 are both connected to the front plate 110 by threads, and first gaskets 140 are respectively disposed between the second folded edge 135 and the front plate 110 and between the third folded edge 136 and the front plate 110.

It can be understood that the second flange 135 is connected to the front side plate 110 by a plurality of screws, as shown in fig. 3, and the second flange 135 connected to the first plate portion 131 is fixedly connected to the front side plate 110 by four screws, which are arranged at intervals in the vertical direction (corresponding to the Z-axis in the drawing); the second flange 135 connected to the second plate portion 132 is fixedly connected to the front side plate 110 by three screws, and the three screws are arranged at intervals in the vertical direction (corresponding to the Z-axis in the drawing). The first sealing gasket 140 is provided with a through hole to allow a screw to pass therethrough.

The first gasket 140 may be a metal gasket, such as a copper gasket; the first sealing pad 140 may also be a high temperature resistant rubber pad, and the first sealing pad 140 may be any high temperature resistant sealing pad, which is not limited in the embodiment of the present application.

The first gasket 140 may be U-shaped for easy installation. The first sealing pad 140 may also be a frame type, and the top end portion thereof is hermetically connected to the heat exchange device 300.

According to the embodiment of the application, the second folded edge 135 is arranged on the front sides of the first plate portion 131 and the second plate portion 132, the third folded edge 136 is arranged on the front side of the bottom plate portion 133, the front side is conveniently in threaded connection with the front side plate 110, and the second folded edge 135 and the third folded edge 136 can also play a role in improving the structural strength of the U-shaped plate 130. At this time, the threaded connection position of the front side plate 110 is located on the front side surface, the operation space is sufficient, and the assembly is convenient.

With reference to fig. 8, two side edges of the front side plate 110 are bent and extended towards the rear side plate 120 to form a first rib 111, in the direction shown in the drawing, the left side edge and the right side edge of the front side plate 110 are bent and extended backwards to form the first rib 111, the first rib 111 abuts against the second flange 135, and the first rib 111 protrudes out of the second flange 135, so that the arrangement can not only shield the first sealing gasket 140 and the second flange 135, but also can shield the second flange 135 and the first sealing gasket 140, and prevent the U-shaped plate 130 from deforming.

With reference to fig. 6, the bottom edge of the front side plate 110 is bent towards the rear side plate and extends to form a second blocking edge 112, and the second blocking edge 112 abuts against the bottom plate 133, so that the first sealing pad 140 can be blocked, the bottom plate 133 can be supported, and the U-shaped plate 130 is prevented from deforming.

With continued reference to fig. 9, the second flange 135 has a reinforcing groove 137, a part of the reinforcing groove 137 is located at a junction of the second flange 135 and the first plate portion 131, the reinforcing groove 137 is provided in plurality, and the plurality of reinforcing grooves 137 are arranged at intervals along a length direction of the second flange 135. So set up, do benefit to the structural strength who improves second hem 135 and first board 131, avoid second hem 135 to warp and influence and preceding curb plate 110 threaded connection.

A part of the reinforcing grooves 137 is located at a connection portion of the second flange 135 and the second plate portion 132, the reinforcing grooves 137 are provided in plural, and the plural reinforcing grooves 137 are arranged at intervals along a length direction of the second flange 135. With such an arrangement, the structural strength of the second folded edge 135 and the second plate portion 132 can be improved, and the second folded edge 135 can be prevented from deforming to affect the threaded connection with the front side plate 110. Illustratively, the two second flanges 135 are respectively provided with three reinforcing grooves 137, although this is not a limitation on the number of the reinforcing grooves 137.

Referring to fig. 9, the top ends of the first plate portion 131 and the second plate portion 132 are respectively bent outward to form a first connecting edge 138, where "outward" refers to the outward side of the burner housing 100. The top end of the first plate portion 131 bends away from the second plate portion 132 and extends to form a first connecting edge 138, and the top end of the second plate portion 132 bends away from the first plate portion 131 and extends to form a first connecting edge 138.

Referring to fig. 4, the top edge of the rear side panel 120 is bent away from the front side panel 110 to form a third connecting edge 125. Referring to fig. 10, the portions of the top of the rear plate 120 protruding from the first plate portion 131 are respectively provided with second connecting edges 124, that is, the portion of the left side of the rear plate 120 protruding from the first plate portion 131 and the portion of the right side of the rear plate 120 protruding from the second plate portion 132 are respectively provided with the second connecting edges 124, the second connecting edges 124 and the rear plate 120 are located on the same plane, the portion of the left side of the rear plate 120 protruding from the first plate portion 131 extends leftward to form the second connecting edges 124, and the portion of the right side of the rear plate 120 protruding from the second plate portion 132 bends rightward to form the second connecting edges 124. The first connecting edge 138, the second connecting edge 124 and the third connecting edge 125 are all used for being fixedly connected with the heat exchanging device 300, so that the heat exchanging device 300 is convenient to install. Second sealing gaskets can be arranged between the first connecting edge 138, the second connecting edge 124 and the third connecting edge 125 and the heat exchange device 300, so that smoke leakage is avoided.

With continued reference to fig. 2 and 5, the burner housing 100 of the embodiment of the present application further includes a wall hanger 150, the wall hanger 150 includes a horizontal plate portion 151 and a vertical plate portion 152, a front end of the horizontal plate portion 151 is fixedly connected with a bottom portion of the U-shaped plate 130, for example, a front end of the horizontal plate portion 151 is fixedly connected with the bottom plate portion 133 by a screw. The rear end of the horizontal plate portion 151 is provided with an avoiding groove 153 for avoiding the riveting position of the U-shaped plate 130, and the avoiding groove 153 avoids the convex first U-shaped flanging 121. Dodge the rear end of recess 153 and bend down and extend and form vertical board 152, be provided with the hanging mounting hole on the vertical board 152, the hanging mounting hole can pass through the fix with screw on gas heater's shell body 500.

Alternatively, the wall hanger 150 is provided in plural, for example, two, three, etc., and the plural wall hangers 150 are arranged at intervals along the length direction of the bottom plate portion 133. In addition, a wall hanger may be further provided on the heat exchanging device 300, so that the heat exchanging device 300 and the burner housing 100 are mounted on the outer case 500.

In summary, the gas water heater of the present application, the burner housing 100 thereof includes: the front plate 110, the rear plate 120 and the U-shaped plate 130, the front plate 110 and the rear plate 120 are oppositely arranged at intervals. A first side edge of the U-shaped plate 130 is riveted with the rear side plate 120; the front side of the U-shaped plate 130 is screwed to the front plate 110, and a first gasket 140 is disposed between the second side of the U-shaped plate 130 and the front plate 110, so as to seal the burner housing 100. The rear side plate 120 of the embodiment of the application is riveted with the first side edge of the U-shaped plate 130, so that not only can the assembly efficiency be improved, but also the initial positioning can be provided for the threaded connection between the front side plate 110 and the U-shaped plate 130, and the screws can be conveniently screwed in; the front plate 110 is threadedly coupled to the U-shaped plate 130, which is advantageous in ensuring structural stability and reliability of the burner housing 100. The top ends of the front side plate 110 and the rear side plate 120 are all protruded out of the U-shaped plate 130, and a heat exchange space 101 for enabling the heat exchange device 300 to exchange heat is formed between the front side plate 110 and the rear side plate 120 which are protruded out of the U-shaped plate 130, so that the connecting position of the heat exchange device 300 and the combustor shell 100 can be reduced, the risk of flue gas leakage is reduced, and the assembling efficiency of the gas water heater can be improved. The front side plate 110, the rear side plate 120, and the U-shaped plates 130 form a combustion space 102 for burning the inner combustor casing 200, for mounting the inner combustor casing 200. Thus, the front side plate 110 and the rear side plate 120 are both used as the side walls of the combustion space 102 and the heat exchange space 101, so that high-temperature flue gas generated by combustion of the combustor inner shell 200 can smoothly enter the heat exchange space 101, and the heat exchange device 300 exchanges heat.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims (10)

1. A burner housing, comprising: the sealing device comprises a front side plate, a rear side plate and a U-shaped plate, wherein a first side edge of the U-shaped plate is riveted with the rear side plate, a second side edge of the U-shaped plate is in threaded connection with the front side plate, and a first sealing gasket is arranged between the front side edge of the U-shaped plate and the front side plate;

the top end of the front side plate and the top end of the rear side plate protrude out of the U-shaped plate, a heat exchange space for heat exchange is formed between the parts, protruding out of the U-shaped plate, of the front side plate and the rear side plate, and a combustion space for combustion of the combustor is formed by the front side plate, the rear side plate and the U-shaped plate.

2. The burner housing according to claim 1, wherein the bottom edge of the rear side plate and the partial edges respectively connected to the two side edges on both sides of the bottom edge of the rear side plate are bent toward the U-shaped plate to collectively form a first U-shaped flange, and the first U-shaped flange is opened toward the U-shaped plate;

the U-shaped plate comprises a bottom plate part, a first plate part and a second plate part which are integrally formed, and the first plate part and the second plate part are oppositely arranged at two ends of the bottom plate part at intervals; the rear side plate and the front side plate are both protruded out of the first plate part and the second plate part; the first plate part, the second plate part and the bottom plate part are bent towards the side edge of the rear side plate to form a first folded edge respectively towards the outer side of the combustion space; the first folding edge is contained in the first U-shaped flanging, and the first folding edge is riveted with the first U-shaped flanging.

3. The burner housing of claim 2, wherein the rear side plate comprises a first plate body, the bottom edge of the first plate body and partial edges of two side edges connected to two sides of the bottom edge of the first plate body are bent and extended towards the U-shaped plate to form connecting parts, the connecting parts are bent and extended away from the first plate body to form the first U-shaped flanges, the openings of the first U-shaped flanges are opposite to the connecting parts, and the opening ends of the first U-shaped flanges are spaced from the connecting parts.

4. The burner housing according to claim 2, wherein the front side of the first plate portion and the front side of the second plate portion are bent away from the front side plate to form a second folded edge, the front side of the bottom plate portion is bent upward to form a third folded edge, the third folded edge and the second folded edge are both in threaded connection with the front side plate, and the first sealing gaskets are respectively arranged between the second folded edge and the front side plate and between the third folded edge and the front side plate.

5. The burner housing of claim 4, wherein the second flange has a reinforcement groove located at a junction of the second flange and the first plate portion and at a junction of the second flange and the second plate portion; the reinforcing grooves are arranged in a plurality of numbers, and the reinforcing grooves are arranged at intervals along the length direction of the second folded edge.

6. The burner housing of claim 4, wherein two side edges of the front plate are respectively bent and extended towards the rear plate to form a first flange, the first flange abuts against the second flange, and the first flange protrudes from the second flange; the bottom edge of the front side plate bends and extends towards the rear side plate to form a second flange, and the second flange is abutted to the bottom plate portion.

7. The burner housing according to any one of claims 2 to 6, wherein the top end of the first plate portion extends bent away from the second plate portion, and the top end of the second plate portion extends bent away from the second plate portion, both forming a first connecting edge;

the top edge of the rear side plate deviates from the front side plate and bends and extends to form a third connecting edge; the parts of the two side edges connected with the top edge of the rear side plate, which protrude out of the first plate part, are respectively provided with a second connecting edge;

the first connecting edge, the second connecting edge and the third connecting edge are all used for being fixedly connected with the heat exchange device.

8. The burner housing according to any one of claims 2 to 6, wherein the first plate portion is provided with a first reinforcing protrusion that protrudes away from the second plate portion;

the second board portion is provided with a second reinforcing protrusion, and the second reinforcing protrusion deviates from the first board portion in a protruding mode.

9. The burner housing according to any one of claims 1 to 6, further comprising a wall hanger, wherein the wall hanger comprises a horizontal plate and a vertical plate, the front end of the horizontal plate is fixedly connected with the bottom of the U-shaped plate, the rear end of the horizontal plate is provided with an avoiding groove for avoiding the riveting position of the U-shaped plate, the rear end of the avoiding groove is bent downwards to form the vertical plate, and the vertical plate is provided with a wall-mounted mounting hole.

10. A gas water heater, comprising: a heat exchanging device, an inner burner shell and an outer burner shell as claimed in any one of claims 1 to 9, said inner burner shell being mounted at the bottom inside said outer burner shell and said heat exchanging device being mounted at the top of said outer burner shell.

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