Water heating apparatus

Abstract

An embodiment disclosed herein relates to a water heating apparatus comprising: a container that has an opening formed in one side and is configured such that raw water flows therein; a burner assembly inserted into the container via the opening; and a combustion chamber cover coupled to the burner assembly and covering the opening. The combustion chamber cover may include: a cover plate covering the opening; a gasket member disposed between the cover plate and the container and formed to provide sealing between the cover plate and the container; and a sealing member that is disposed outside the gasket member in a direction intersecting both the longitudinal direction of the container and the circumferential direction of the container, and is formed to provide sealing between the cover plate and the container.

Description

water heater

[0001] Cross-citation with related applications

[0002] The present invention claims the benefit of priority based on Korean Patent Application No. 10-2024-0196642 filed on December 26, 2024, and includes all contents disclosed in the document of said Korean patent application as part of this specification.

[0003] Technology field

[0004] The present invention relates to a water heater.

[0005] A water heater is a device that transfers heat generated by a combustion reaction to water for heating or hot water supply. The process of water flowing in, being heated, and then being discharged takes place through the water heater.

[0006] Combustion reactions can occur in a burner, and for a burner to initiate a combustion reaction, fuel and air are required. When the fuel and air supplied from the outside mix to create conditions favorable for flame formation, ignition occurs in the burner, and a flame can be generated along with the combustion reaction. The flame produced by the combustion reaction can be placed in the combustion chamber.

[0007] Meanwhile, as a flame is generated along with the combustion reaction inside the burner, airtightness of the burner may be required. Therefore, there is an increasing need for a structure with improved burner airtightness.

[0008] The problem to be solved by the present invention is to provide a water heater with improved airtightness to solve the aforementioned problem.

[0009] A water heater according to an embodiment of the present disclosure comprises a container formed with an opening on one side and configured to allow raw water to flow inside, a burner assembly inserted into the interior of the container through the opening, and a combustion chamber cover coupled to the burner assembly and covering the opening. The combustion chamber cover may include a cover plate covering the opening, a gasket member disposed between the cover plate and the container and formed to seal the space between the cover plate and the container, and a sealing member disposed outward from the gasket member in the longitudinal direction of the container and the circumferential direction of the container and formed to seal the space between the cover plate and the container.

[0010] The gasket member and the sealing member may be spaced apart from each other in a direction intersecting the longitudinal direction of the container and the circumferential direction of the container.

[0011] The above cover plate includes a plate surface facing the inner side of the container and a plate hole formed on the plate surface, and the sealing member can be inserted into the plate hole.

[0012] The sealing member may include an insertion area inserted into the plate hole, a sealing body area connected to the insertion area and extending in the periphery direction of the container between the container and the cover plate, and a rib area protruding from the sealing body area toward the container and the cover plate.

[0013] The above rib region may extend along the circumferential direction of the container.

[0014] The above rib regions are provided in plurality, and the plurality of rib regions may be spaced apart from each other in a direction intersecting the length direction of the container and the circumference direction of the container.

[0015] The combustion chamber cover further includes a pressure plate formed to be supported by the cover plate and to press the cover plate, and the container may include a container body and a fixing bracket assembly that fixes the pressure plate on the outside of the container body.

[0016] The above cover plate includes a through hole, the above pressure plate includes a fixing hole communicating with the through hole, and the above fixing bracket assembly may include a support bracket provided on the outer side of the container body, a through shaft rotatably supported by the support bracket and including an end portion inserted into the through hole and the fixing hole, and a fixing member that fixes the end portion of the through shaft between the end portion of the through shaft and the above pressure plate.

[0017] The above-mentioned through shaft includes a shaft body connected to the support bracket and a flange area connected to the shaft body, and the fixing member is penetrated by the shaft body and can fix the flange area.

[0018] The above pressure plates are provided in a plurality, and each of the plurality of pressure plates extends in the periphery direction of the cover plate but can be spaced apart from each other.

[0019] The support bracket may include one end disposed between the container and the cover plate.

[0020] The above cover plate includes a plate surface facing the inner side of the container and an insulating member disposed inwardly with respect to a direction intersecting the longitudinal direction of the container and the periphery direction of the container relative to the plate surface, and the gasket member may be spaced apart from the insulating member in a direction intersecting the longitudinal direction of the container and the periphery direction of the container.

[0021] The above cover plate includes a fixing groove located around the perimeter of the cover plate and having a shape that is indented inward, and the container may include a container body and a guide bracket disposed on the outside of the container body and inserted into the fixing groove.

[0022] The cover plate includes a plate surface extending in a circumferential direction facing the inner side of the container and an insulating member disposed inward with respect to the radial direction of the plate surface and protruding toward the inner side of the container, and the gasket member may be spaced 3 mm apart from the sealing member in a direction intersecting the longitudinal direction of the container and the periphery direction of the container, and the gasket member may be spaced 2 mm apart from the insulating member in a direction intersecting the longitudinal direction of the container and the periphery direction of the container.

[0023] The above gasket member may include graphite, and the above sealing member may include silicone.

[0024] The above opening is formed in a circular shape, and the gasket member and the sealing member may extend along the radial direction of the opening.

[0025] According to one embodiment of the present disclosure, a gasket member and a sealing member are disposed between a container and a cover plate, so that the water heater can be double-sealed, and thus the airtightness of the water heater can be improved.

[0026] In addition, according to one embodiment of the present disclosure, since the gasket member and the sealing member of the water heater are spaced apart from each other, damage to the sealing member can be prevented even if the temperature of the gasket member rises.

[0027] In addition, according to one embodiment of the present disclosure, since the gasket member of the water heater is spaced apart from the insulating member, damage to the gasket member can be prevented.

[0028] In addition, according to one embodiment of the present disclosure, the sealing member of the water heater can be inserted into the plate hole of the cover plate so that the position of the sealing member can be guided.

[0029] In addition, according to one embodiment of the present disclosure, the sealing member of the water heater includes a rib area, so that the airtightness between the cover plate and the container can be improved.

[0030] In addition, according to one embodiment of the present disclosure, since one end of the support bracket is located between the cover plate and the container, the pressure plate can be prevented from excessively pressing the gasket member and the sealing member.

[0031] FIG. 1 is a perspective view of a water heater according to one embodiment of the present invention.

[0032] FIG. 2 is an exploded perspective view of a burner assembly, a combustion chamber cover, and a heat exchange assembly according to one embodiment of the present invention.

[0033] FIG. 3 is an exploded perspective view of a heat exchange assembly, a burner assembly, a cover plate, and a pressure plate according to one embodiment of the present invention.

[0034] Figure 4 is an enlarged view of Figure 1.

[0035] FIG. 5 is a vertical cross-sectional view of a burner assembly, a container, and a combustion chamber cover according to one embodiment of the present invention.

[0036] FIG. 6 is a bottom perspective view of a burner assembly and a combustion chamber cover according to one embodiment of the present invention.

[0037] FIG. 7 is an enlarged view showing the appearance of a gasket member and a sealing member on a cover plate of a combustion chamber cover in one embodiment of the present invention.

[0038] FIG. 8 is a perspective view of a sealing member according to one embodiment of the present invention.

[0039] FIG. 9 is an enlarged view of a sealing member according to one embodiment of the present invention.

[0040] FIG. 10 is a vertical cross-sectional view of a sealing member according to one embodiment of the present invention.

[0041] FIG. 11 is a vertical cross-sectional view of a container, a pressure plate, a cover plate, and a support bracket assembly according to one embodiment of the present invention.

[0042] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0043] In this specification, the first direction (D1) and the second direction (D2) are referred to for convenience of explanation and may be directions orthogonal to each other. In this specification, the first direction (D1) may be the direction in which the opening of the container is open, and the second direction (D2) may be a direction facing outward in the radial direction.

[0044] In this specification, the horizontal and vertical directions are referred to for convenience of explanation and may be directions orthogonal to each other. However, these directions are determined relative to the direction in which the components of the burner are arranged, and the term "up and down direction" does not necessarily mean a vertical direction.

[0045] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but said components are not limited by said terms, and said terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any one of a plurality of related described items.

[0046] FIG. 1 is a perspective view of a water heater according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a burner assembly, a combustion chamber cover, and a heat exchange assembly according to an embodiment of the present invention. FIG. 3 is an exploded perspective view of a heat exchange assembly, a burner assembly, a cover plate, and a pressure plate according to an embodiment of the present invention. FIG. 4 is an enlarged view of FIG. 1.

[0047] Referring to FIGS. 1 to 4, the water heater (100) may include a heat exchange assembly (200), a burner assembly (300), and a combustion chamber cover (400).

[0048] The heat exchange assembly (200) may include a vessel (210) that is arranged to allow raw water to flow inside and forms an opening on one side facing the first direction (D1). The opening may be formed in a circular shape.

[0049] A combustion chamber (212, see FIG. 5) may be formed inside the container (210). A heat exchanger may be provided in the direction opposite to the first direction (D1) of the combustion chamber (212). Although the heat exchanger is not separately illustrated in the drawing, it is provided inside the container (210) and can perform the function of heating the water by transferring the combustion heat of the combustion gas formed by the combustion reaction to the water.

[0050] A blower may be provided inside the container (210), although not separately illustrated in the drawing. The blower may pump air supplied from the outside. The blower may include an impeller that compresses the air and a blower motor that generates rotational driving force to rotate the impeller and transmits it to the impeller.

[0051] The heat exchanger may include a sensible heat exchanger and a latent heat exchanger. A combustion chamber (212) may be formed on the first direction (D1) side of the heat exchanger, and a burner assembly (300) may be coupled to the combustion chamber (212).

[0052] The burner assembly (300) can be inserted into the interior of the container (210) through an opening. The burner assembly (300) may include a fuel nozzle (not shown) for injecting fuel and a spark plug (not shown) for causing a combustion reaction.

[0053] The fuel nozzle may be a gas-type fuel, but is not limited to this type. The spark plug can ignite a mixture of air guided by a blower and fuel injected by the fuel nozzle to cause a combustion reaction.

[0054] The burner assembly (300) can be combined with a combustion chamber cover (400). The combustion chamber cover (400) is combined with the burner assembly (300) and can cover the opening of the container (210).

[0055] A cover support plate (310) may be provided on the outer side with respect to the circumferential direction of the burner assembly (300). The cover support plate (310) may support the combustion chamber cover (400).

[0056] The combustion chamber cover (400) may include a cover plate (500) and a pressure plate (800).

[0057] The cover plate (500) may come into contact with the container (210). The cover plate (500) may cover the opening. When viewed from a distanced position in the first direction (D1), the cover plate (500) may be formed in the shape of a part of a disc.

[0058] A pressure plate (800) may be provided on the first direction (D1) side of the cover plate (500). The pressure plate (800) may press the cover plate (500) toward the container (210). The pressure plate (800) may be supported by the cover plate (500) and formed to press the cover plate (500).

[0059] The cover plate (500) may include a fixing groove (501) located around the perimeter of the cover plate (500) and having a shape that is indented inward with respect to the radial direction of the cover plate (500). The fixing groove (501) may be provided in multiple numbers spaced apart from each other with respect to the perimeter direction of the cover plate (500).

[0060] The cover plate (500) may include a through hole (510). The through hole (510) may be formed to be open toward the radial outer side of the cover plate (500). The through hole (510) may extend in a first direction (D1).

[0061] The through holes (510) may be provided in multiple numbers spaced apart from each other along the circumferential direction of the cover plate (500).

[0062] The cover plate (500) may include plate holes (530). The plate holes (530) may be provided in multiple numbers.

[0063] The pressure plates (800) may be provided in multiple numbers, extending along the circumferential direction of the cover plate (500) when viewed from a distanced position in the first direction (D1). Each of the multiple pressure plates (800) may be provided to extend along the circumferential direction of the cover plate (500) and spaced apart from one another.

[0064] The pressure plate (800) may include a fixing hole (810) formed at a position corresponding to the position of the through hole (510). The fixing hole (810) may be in communication with the through hole (510).

[0065] The container (210) may include a container body (220), a fixing bracket assembly (230) that fixes a pressure plate (800) and a cover plate (500) on the outside of the container body (220), and a guide bracket (270).

[0066] The fixed bracket assembly (230) can fix the cover plate (500) and the pressure plate (800) through the through hole (510) and the fixing hole (810).

[0067] The fixed bracket assembly (230) can press the combustion chamber cover (400) toward the container (210) to seal the combustion chamber (212) of the container (210). The fixed bracket assembly (230) may be provided in multiple units. The fixed bracket assemblies (230) may be spaced apart from each other in the circumferential direction of the container (210).

[0068] The guide bracket (270) can be positioned on the outside of the container body (220). The guide bracket (270) can be coupled to the container body (220). The guide bracket (270) can be inserted into the fixing groove (501).

[0069] As the guide bracket (270) is inserted into the fixing groove (501), the correct position of the cover plate (500) can be guided so that the cover plate (500) and the container (210) can be joined.

[0070] After the guide bracket (270) is inserted into the fixing groove (501), the cover plate (500), the pressure plate (800), and the container (210) can be combined.

[0071] FIG. 5 is a vertical cross-sectional view of a burner assembly, a vessel, and a combustion chamber cover according to an embodiment of the present invention. FIG. 6 is a bottom perspective view of a burner assembly and a combustion chamber cover according to an embodiment of the present invention. FIG. 7 is an enlarged view showing the appearance of a gasket member and a sealing member on a cover plate of a combustion chamber cover according to an embodiment of the present invention. FIG. 8 is a perspective view of a sealing member according to an embodiment of the present invention. FIG. 9 is an enlarged view of a sealing member according to an embodiment of the present invention. FIG. 10 is a vertical cross-sectional view of a sealing member according to an embodiment of the present invention.

[0072] Referring to FIGS. 5 to 10, the combustion chamber cover (400) may include a gasket member (600) disposed between the cover plate (500) and the container (210) and a sealing member (700) disposed between the cover plate (500) and the container (210).

[0073] The gasket member (600) is positioned between the cover plate (500) and the container (210) to seal the space between the cover plate (500) and the container (210).

[0074] The gasket member (600) may be formed of graphite or iron (Fe). The gasket member (600) may have higher heat resistance than the sealing member (700). The gasket member (600) may be formed with a thickness of 3 mm in the first direction (D1).

[0075] The sealing member (700) may be positioned further outward with respect to the radial direction of the container (210) than the gasket member (600). That is, the sealing member (700) may be positioned further outward with respect to the direction perpendicular to the longitudinal direction of the container (210) and the circumferential direction of the container than the gasket member (600).

[0076] The sealing member (700) can be formed to double-seal the space between the cover plate (500) and the container (210).

[0077] The sealing member (700) may be formed from a heat-resistant material. The sealing member (700) needs to have a softer material than the gasket member (600). The sealing member (700) may be formed with a thickness of 4 mm in the first direction (D1).

[0078] The gasket member (600) and the sealing member (700) can be fixed to the plate surface (520) of the cover plate (500). The gasket member (600) can be provided on the plate surface (520), and the sealing member (700) can be inserted into the plate hole (530) of the cover plate (500).

[0079] For example, the gasket member (600) may be attached to the plate surface (520). Alternatively, the gasket member (6000) may be attached to the cover plate (500) or the container body (220).

[0080] Here, the plate surface (520) may be one side of the cover plate (500) facing the inner side of the container (210). Additionally, the plate hole (530) may be formed on the plate surface (520) and extend in a first direction (D1). The plate hole (530) may be formed to penetrate the cover plate (500).

[0081] Meanwhile, the cover plate (500) may be formed with a thickness of 6 mm in the first direction (D1).

[0082] The gasket member (600) is positioned on the first direction (D1) side of the raw water space (211) through which water flows in the container (210), thereby primarily preventing the leakage of fluid, such as water, from the combustion chamber (212) through the space between the container (210) and the combustion chamber cover (400). This can be confirmed by the fact that the leakage of soap bubbles according to the soap bubble test designated as a leak test item is prevented.

[0083] The sealing member (700) is positioned further outward from the gasket member (600) in the radial direction of the combustion chamber cover (400) to secondarily prevent fluid from leaking out from the combustion chamber (212) through the space between the container (210) and the combustion chamber cover (400).

[0084] Therefore, compared to a structure having only a gasket member (600), the water heater (100) according to the embodiment of the present invention can have improved airtightness between the container (210) and the combustion chamber cover (400).

[0085] More specifically, the cover plate (500) may include an insulating member (540) provided radially inward from the plate surface (520). The insulating member (540) may be provided on one side of the cover plate (500) facing the combustion chamber (212). The insulating member (540) may be positioned inward from the plate surface (520) in a direction perpendicular to the longitudinal direction of the container (210) and the periphery direction of the container (210).

[0086] The insulating member (540) is positioned on the inner side with respect to the radial direction of the plate surface (520) which extends in a circumferential direction facing the inner side of the container (210), and may protrude toward the inner side of the container (210).

[0087] The gasket member (600) and the sealing member (700) may be formed to surround the opening of the container (210). The gasket member (600) may be formed in a circular shape with an open center. The sealing member (700) may be formed in a circular shape with an open center having a diameter longer than the diameter of the gasket member (600).

[0088] That is, the gasket member (600) and the sealing member (700) can extend along the radial direction of the opening of the container (210).

[0089] The plate surface (520) may be provided radially outward from the insulating member (540). A gasket member (600) and a sealing member (700) may be fixed on the plate surface (520).

[0090] The sealing member (700) may include a sealing body region (710), an insertion region (720), and a rib region (730).

[0091] The sealing body region (710) may be a portion that extends perimeterwise from the container (210). The sealing body region (710) may be a portion that extends perimeterwise from the container (210) between the container (210) and the cover plate (500).

[0092] The insertion area (720) may protrude in a first direction (D1) from the sealing body area (710). The insertion area (720) may be connected to an intermediate portion with respect to the radial direction of the sealing body area (710). The insertion area (720) may be inserted into the plate hole (530).

[0093] The rib area (730) may protrude from the sealing body area (710) toward the container (210) and the cover plate (500). The rib area (730) may extend along the circumference of the container (210) together with the sealing body area (710).

[0094] The rib areas (730) may be provided in multiple numbers. Preferably, the rib areas (730) may be formed in seven numbers. The multiple rib areas (730) may be spaced apart from each other in a direction perpendicular to the longitudinal direction of the container (210) and the circumferential direction of the container (210).

[0095] One of the plurality of rib regions (730) may be connected to the insertion region (720), and another of the plurality of rib regions (730) may be located radially inward of the sealing member (700) than the insertion region (720). Additionally, another of the plurality of rib regions (730) may be located radially outward of the sealing member (700) than the insertion region (720).

[0096] Among the plurality of rib regions (730), the remaining rib regions (730) may protrude from the sealing body region (710) opposite to the insertion region (720) and may be spaced apart from each other in the radial direction.

[0097] According to the above-described structure, the sealing member (700) can be fixed in position as the insertion area (720) is inserted into the plate hole (530), so that airtightness between the container (210) and the combustion chamber cover (400) can be maintained.

[0098] In addition, since the rib area (730) of the sealing member (700) contacts the container (210) and the cover plate (500) rather than the sealing body area (710), the airtightness between the container (210) and the combustion chamber cover (400) can be improved compared to a structure having only the sealing body area (710).

[0099] FIG. 11 is a vertical cross-sectional view of a container, a pressure plate, a cover plate, and a support bracket assembly according to one embodiment of the present invention.

[0100] Referring to FIG. 11, the fixed bracket assembly (230) may include a support bracket (240), a through shaft (250), and a fixing member (260).

[0101] A support bracket (240) may be positioned on the outside of a container body (220, see FIG. 5). The support bracket (240) may be mounted on the outer surface of the container body (220). The support bracket (240) may form a space that is open radially outward from the container body (220). The support bracket (240) may be formed to be open toward a first direction (D1).

[0102] The through shaft (250) can be rotatably supported by a support bracket (240). The through shaft (250) can be rotated radially outward from the container body (220) while supported by the support bracket (240). The rotated through shaft (250) may include a one end portion (252) that is inserted into a through hole (510, see FIG. 3) and a fixing hole (810). The rotated through shaft (250) can be fixed by a fixing member (260) while inserted into the through hole (510) and the fixing hole (810).

[0103] More specifically, the through shaft (250) may include a shaft body (251) connected to a support bracket (240) and a flange area (253) connected to the shaft body (251) and extending horizontally from the shaft body (251).

[0104] The flange area (253) may have a diameter larger than the diameter of one end portion (252) of the through shaft (250). The fixing member (260) is penetrated by the shaft body (251), and the fixing member (260) may have a diameter larger than the diameter of the flange area (253).

[0105] Accordingly, the fixing member (260) can fix the end portion (252) of the through shaft (250) between the end portion (252) of the through shaft (250) and the pressure plate (800).

[0106] Based on this principle, the through shaft (250) and the fixing member (260) can fix the cover plate (500) and the pressure plate (800), and thus the pressure plate (800) can press the cover plate (500) toward the container (210), and the gasket member (600) and the sealing member (700) can be compressed by the container (210) and the cover plate (500), thereby improving airtightness.

[0107] Meanwhile, the gasket member (600) and the sealing member (700) may be spaced apart from each other by "d" in the radial direction of the container (210) which is perpendicular to the longitudinal direction of the container (210) and the periphery direction of the container.

[0108] Preferably, the spacing distance "d" between the gasket member (600) and the sealing member (700) can be formed to be 3 mm. The gasket member (600) can be positioned so as to be spaced 2 mm apart from the insulating member (540) in the radial direction of the cover plate (500).

[0109] In other words, the gasket member (600) may be spaced 3 mm apart from the sealing member (700) in a direction perpendicular to the longitudinal direction of the container (210) and the circumferential direction of the container (210).

[0110] Additionally, the gasket member (600) may be spaced 2 mm apart from the insulating member (540) in a direction perpendicular to the longitudinal direction of the container (210) and the perimeter direction of the container (210).

[0111] According to this structure, contact between the gasket member (600) and the sealing member (700) can be prevented. For example, when the combustion chamber cover (400) is combined with the container (210), the position of the gasket member (600) is fixed to the cover plate (500) so that it is offset from the center of the container (210), and even if the distance between any point of the gasket member (600) and the insulation member (540) becomes 0 mm, the distance between any point of the gasket member (600) and the sealing member (700) can be maintained at 1 mm.

[0112] Accordingly, if the gasket member (600) and the sealing member (700) are spaced apart by 3 mm in the direction perpendicular to the longitudinal direction of the container (210) and the circumferential direction of the container (210), and the gasket member (600) and the insulating member (540) are spaced apart by 2 mm, the spacing between the gasket member (600) and the sealing member (700) can be maintained.

[0113] Since the gasket member (600) and the sealing member (700) are spaced apart from each other, even if the gasket member (600) located on the side of the combustion chamber (212) is damaged, air is provided between the gasket member (600) and the sealing member (700), so heat conduction to the sealing member (700) can be delayed.

[0114] Based on this principle, the durability of the water heater (100) can be improved and the airtightness can be improved.

[0115] Meanwhile, if the gasket member (600) and the sealing member (700) are compressed with too strong a force, the distance between the gasket member (600) and the sealing member (700) may be reduced.

[0116] To solve this problem, one end (241) of the support bracket (240) can be positioned between the container (210) and the cover plate (500) so that the cover plate (500) does not press the gasket member (600) and the sealing member (700) with too much force.

[0117] That is, when the pressure plate (800) moves the cover plate (500) toward the container body (220) by applying too much pressure, the cover plate (500) can come into contact with the support bracket (240), so the support bracket (240) can serve as a stopper for the cover plate (500).

[0118] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by these embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. A container arranged to allow raw water to flow inside and having an opening formed on one side; A burner assembly inserted into the interior of the container through the opening; and A combustion chamber cover coupled to the burner assembly and covering the opening; comprising The above combustion chamber cover is, A cover plate covering the above opening; A gasket member disposed between the cover plate and the container and formed to seal the space between the cover plate and the container; and A water heater comprising: a sealing member disposed outside of the gasket member in a direction intersecting the longitudinal direction of the container and the circumferential direction of the container, and formed to seal the space between the cover plate and the container.

2. In Paragraph 1, A water heater in which the gasket member and the sealing member are spaced apart from each other in a direction intersecting the longitudinal direction of the container and the circumferential direction of the container.

3. In Paragraph 1, The above cover plate includes a plate surface facing the inside of the container and a plate hole formed on the plate surface. The above sealing member is a water heater inserted into the plate hole.

4. In Paragraph 3, The above sealing member is, An insertion area inserted into the above plate hole; and A sealing body region connected to the insertion region and extending in the perimeter direction of the container between the container and the cover plate; A water heater comprising: a rib region protruding from the sealing body region toward the container and the cover plate.

5. In Paragraph 4, The above rib area is a water heater extending along the circumferential direction of the container.

6. In Paragraph 4, The above rib area is provided in multiple numbers, and A water heater, wherein the plurality of rib regions are spaced apart from each other in a direction intersecting the longitudinal direction of the container and the circumferential direction of the container.

7. In Paragraph 1, The above combustion chamber cover is, A pressure plate supported by the cover plate and formed to press the cover plate; further comprising The above container is, Container body; and A water heater comprising: a fixing bracket assembly for fixing the pressure plate on the outer side of the container body.

8. In Paragraph 7, The above cover plate includes a through hole, and The above pressure plate includes a fixing hole communicating with the through hole, and The above fixed bracket assembly is, A support bracket provided on the outer side of the above-mentioned container body; A through shaft rotatably supported by the support bracket and including one end portion inserted into the through hole and the fixing hole; and A water heater comprising: a fixing member that fixes the one end portion of the through shaft between the one end portion of the through shaft and the pressure plate.

9. In Paragraph 8, The above through shaft is, A shaft body connected to the above support bracket; and A flange area connected to the shaft body; including, A water heater, wherein the above-mentioned fixing member is penetrated by the above-mentioned shaft body and fixes the above-mentioned flange area.

10. In Paragraph 7, The above pressure plates are provided in multiple numbers, and A water heater in which each of the plurality of pressure plates extends in the circumferential direction of the cover plate but is spaced apart from each other.

11. In Paragraph 8, A water heater, wherein the support bracket comprises one end disposed between the container and the cover plate.

12. In Paragraph 1, The above cover plate is, A plate surface facing the inner side of the above container, and It includes an insulating member disposed inwardly with respect to a direction intersecting the longitudinal direction of the container and the periphery direction of the container relative to the plate surface, and The above gasket member is a water heater spaced apart from the insulation member in a direction intersecting the longitudinal direction of the container and the perimeter direction of the container.

13. In Paragraph 1, The above cover plate includes a fixing groove located around the perimeter of the cover plate and having a shape that is indented inward, and The above container is, Container body; and A water heater comprising: a guide bracket disposed on the outer side of the container body and inserted into the fixing groove.

14. In Paragraph 1, The above cover plate includes a plate surface extending in a circumferential direction facing the inner side of the container and an insulating member disposed inward with respect to the radial direction of the plate surface and protruding toward the inner side of the container. The gasket member is spaced 3 mm apart from the sealing member in a direction intersecting the longitudinal direction of the container and the circumferential direction of the container, and A water heater, wherein the gasket member is spaced 2 mm apart from the insulating member in a direction intersecting the longitudinal direction of the container and the perimeter direction of the container.

15. In Paragraph 1, The above gasket member includes graphite, and The above sealing member is a water heater comprising silicone.

16. In Paragraph 1, The above opening is formed in a circular shape, and The above gasket member and the above sealing member are a water heater extending along the radial direction of the opening.

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