A smoke exhaust port sealing structure for a gas water heater

Abstract

The present invention discloses a sealing structure for a smoke exhaust port of a gas water heater, comprising a shell, a fan, a smoke exhaust pipe, a sealing gasket and a pressure plate, wherein the fan is arranged inside the shell, and the smoke exhaust port is arranged on the shell, one end of the smoke exhaust pipe is connected to the outlet of the fan, and the other end extends outward through the smoke exhaust port, at the outer edge of the smoke exhaust port, the shell is recessed from the inside to the outside to form a groove, the sealing gasket is sleeved outside the smoke exhaust pipe and embedded in the groove, the pressure plate is sleeved outside the smoke exhaust pipe and fixes the sealing gasket in the groove, the structure is simple, and the sealing performance is stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a smoke exhaust port sealing structure of a gas water heater. Background Art

[0002] In the prior art, the sealing structure of the smoke exhaust port of the gas water heater is relatively simple, but when the sealing gasket ages, it may cause the sealing gasket to loosen, and the axial sealing strength of the smoke exhaust port is reduced. In addition, the sealing gasket may also shift left and right due to looseness, thereby reducing the sealing performance of the gas water heater and affecting the performance of the whole machine. Summary of the invention

[0003] The present invention aims to solve at least one of the problems existing in the prior art to a certain extent. To this end, one object of the present invention is to provide a smoke exhaust port sealing structure for a gas water heater, which has a simple structure and stable and reliable sealing performance.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A smoke exhaust port sealing structure for a gas water heater comprises a shell, a fan, a smoke exhaust pipe, a sealing gasket and a pressure plate, wherein the fan is arranged inside the shell, and the smoke exhaust port is arranged on the shell, one end of the smoke exhaust pipe is connected to the outlet of the fan, and the other end extends outward through the smoke exhaust port, at the outer edge of the smoke exhaust port, the shell is recessed from the inside to the outside to form a groove, the sealing gasket is sleeved outside the smoke exhaust pipe and embedded in the groove, and the pressure plate is sleeved outside the smoke exhaust pipe and fixes the sealing gasket in the groove.

[0006] In some embodiments, the cross section of the groove is arc-shaped.

[0007] In some embodiments, the cross section of the sealing gasket is arc-shaped, and the shape of the sealing gasket is matched with the shape of the groove.

[0008] In some embodiments, the pressing plate is welded to the inner wall of the housing.

[0009] In some embodiments, the inner diameter of the sealing gasket is smaller than the outer diameter of the smoke exhaust pipe.

[0010] In some embodiments, the sealing gasket is interference fit with the smoke exhaust port.

[0011] In some embodiments, the smoke exhaust port is disposed on the top of the outer shell, a step portion is disposed on the top of the inner ring of the sealing gasket, and a flange extending downward is disposed on the top of the groove, and the flange is pressed tightly against the step portion.

[0012] In some embodiments, an annular protrusion is provided on the outer wall of the smoke exhaust pipe extending out of the smoke exhaust port, and the protrusion abuts against the top of the groove.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. The smoke exhaust port sealing structure of the gas water heater of the present invention has a simple structure and stable and reliable sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of a gas water heater in an embodiment of the present invention;

[0016] Figure 2 is an exploded schematic diagram of a gas water heater in an embodiment of the present invention;

[0017] Figure 3 is a cross-sectional schematic diagram of a gas water heater in an embodiment of the present invention;

[0018] Figure 4 yes Figure 3 A partial enlarged view of part A. DETAILED DESCRIPTION

[0019] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0020] Embodiment 1: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present embodiment provides a smoke exhaust port sealing structure of a gas water heater, comprising a shell 1, a fan 2, a smoke exhaust pipe 3, a sealing gasket 4 and a pressure plate 5. The fan 2 is arranged inside the shell 1, and a smoke exhaust port 100 is arranged on the shell 1. One end of the smoke exhaust pipe 3 is connected to the outlet of the fan 2, and the other end extends outward through the smoke exhaust port 100. At the outer edge of the smoke exhaust port 100, the shell 1 is recessed from the inside to the outside to form a groove 101. The sealing gasket 4 is sleeved on the outside of the smoke exhaust pipe 3 and embedded in the groove 101. The pressure plate 5 is sleeved on the outside of the smoke exhaust pipe 3 and fixes the sealing gasket 4 in the groove 101.

[0021] The smoke exhaust port sealing structure of the gas water heater of this embodiment has a simple structure and a stable and reliable sealing performance.

[0022] Specifically, the sealing gasket 4 is sleeved on the outside of the smoke exhaust pipe 3 and embedded in the groove 101, and the pressure plate 5 is sleeved on the outside of the smoke exhaust pipe 3 and fixes the sealing gasket 4 in the groove 101. Thereby, there is not only an axial seal parallel to the center line of the smoke exhaust port 100, but also a radial seal perpendicular to the center axis, with higher sealing performance, and the pressure plate 5 can limit the sealing gasket 4 to prevent it from being offset due to external factors.

[0023] In this embodiment, the cross section of the groove 101 is arc-shaped. Preferably, the cross section of the sealing gasket 4 is arc-shaped, and the shape of the sealing gasket 4 is adapted to the shape of the groove 101. In this way, the position of the sealing gasket 4 can be better defined, and the sealing gasket 4 can be prevented from being easily loosened in the axial direction or radial direction, resulting in a reduction in the sealing strength.

[0024] Preferably, the pressure plate 5 is welded to the inner wall of the outer shell 1. The welding method is simple and quick, and the pressure plate 5 and the outer shell 1 can be firmly connected together by welding to avoid loosening of the pressure plate 5, which may cause axial or radial loosening of the sealing gasket 4 and reduce the sealing strength.

[0025] In this embodiment, the inner diameter of the sealing gasket 4 is smaller than the outer diameter of the smoke exhaust pipe 3, thereby forming a tight interference fit between the sealing gasket 4 and the smoke exhaust pipe 3, which is conducive to improving the sealing performance between the sealing gasket 4 and the smoke exhaust pipe 3. At the same time, it can also prevent the sealing gasket 4 from easily loosening in the axial direction or radial direction, resulting in a reduction in the sealing strength.

[0026] More preferably, the sealing gasket 4 and the smoke outlet 100 are interference fit, which is reasonably and cleverly designed to improve the sealing performance between the sealing gasket 4 and the smoke outlet 100. At the same time, it can also prevent the sealing gasket 4 from easily loosening in the axial direction or radial direction, resulting in reduced sealing strength.

[0027] In this embodiment, the smoke exhaust port 100 is arranged on the top of the outer shell 1, a step portion 400 is arranged on the top of the inner circle of the sealing gasket 4, and a flange 102 extending downward is arranged on the top of the groove 101. The flange 102 is pressed against the step portion 400. It has a simple structure and a reasonable and ingenious design, which is conducive to improving the efficiency of positioning and assembling the sealing gasket 4, and at the same time is conducive to improving the sealing between the sealing gasket 4 and the smoke exhaust port 100.

[0028] Preferably, an annular protrusion 300 is provided on the outer wall of the smoke exhaust pipe 3 extending out of the smoke exhaust port 100, and the protrusion 300 abuts against the top of the groove 101. It has a simple structure and a reasonable and ingenious design, which is conducive to improving the efficiency of positioning and assembly between the smoke exhaust pipe 3 and the outer shell 1, and at the same time helps to improve the sealing between the sealing gasket 4 and the smoke exhaust port 100.

[0029] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A smoke exhaust port sealing structure for a gas water heater, comprising a housing (1), a fan (2), a smoke exhaust pipe (3), a sealing gasket (4) and a pressure plate (5), wherein the fan (2) is arranged inside the housing (1), a smoke exhaust port (100) is arranged on the housing (1), one end of the smoke exhaust pipe (3) is connected to the outlet of the fan (2), and the other end extends outward through the smoke exhaust port (100), characterized in that: The outer edge of the smoke exhaust port (100) and the outer shell (1) are recessed from the inside to the outside to form a groove (101); the sealing gasket (4) is sleeved outside the smoke exhaust pipe (3) and embedded in the groove (101); the pressing plate (5) is sleeved outside the smoke exhaust pipe (3) and fixes the sealing gasket (4) in the groove (101); The cross section of the groove (101) is arc-shaped, the cross section of the sealing gasket (4) is arc-shaped, and the shape of the sealing gasket (4) is compatible with the shape of the groove (101); The inner diameter of the sealing gasket (4) is smaller than the outer diameter of the smoke exhaust pipe (3); A step portion (400) is provided at the top of the inner ring of the sealing gasket (4), and a flange (102) extending downward is provided at the top of the groove (101), and the flange (102) is pressed tightly against the step portion (400).

2. A smoke outlet sealing structure for a gas water heater according to claim 1, characterized in that: The pressing plate (5) is welded to the inner wall of the outer shell (1).

3. The smoke exhaust port sealing structure of a gas water heater according to claim 1, characterized in that: The sealing gasket (4) and the smoke exhaust port (100) are interference fit.

4. A smoke outlet sealing structure for a gas water heater according to claim 1, characterized in that: The smoke exhaust port (100) is arranged on the top of the housing (1).

5. A smoke exhaust port sealing structure for a gas water heater according to claim 4, characterized in that: An annular protrusion (300) is provided on the outer wall of the smoke exhaust pipe (3) extending out of the smoke exhaust port (100), and the protrusion (300) abuts against the top of the groove (101).

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