Shell structure for gas water heater and gas water heater

Abstract

The utility model relates to a shell structure for a gas water heater and the gas water heater. The shell structure comprises a water heater shell and a back plate. The water heater shell comprises a bottom shell and a back plate, after the bottom shell and the back plate are assembled, an air inlet channel with a complete machine air inlet located below the water heater shell is formed between the back plate and the bottom shell, and the air inlet set is arranged in the air inlet channel, so that the air inlet stroke of air entering the water heater shell can be prolonged, and the air inlet flow speed is reduced; the air inlet noise is further reduced; the air inlet sets are arranged to be the multiple rows of first air inlet sets arranged in the height direction of the burner shell, and the first air inlets of every two adjacent rows of first air inlet sets are arranged in a staggered mode, so that the resistance of air entering any first air inlet can be reduced, namely, the air resistance is reduced, air inlet is smooth, and the service life of the burner is prolonged. The noise reduction effect of the shell structure for the gas water heater is improved.

Description

Technical Field

[0001] The utility model relates to a gas water heater, in particular to a shell structure used for a gas water heater and the gas water heater. Background Art

[0002] When the shell structure of a gas water heater works normally, it needs to inhale air from the outside, and the air enters the water heater through the air inlet channel set at the shell to achieve stable operation of the water heater. At present, in order to reduce the noise of the shell structure of a gas water heater, sound absorption or sound insulation measures are usually added to the shell to reduce the noise of the whole machine, but this solution will increase the resistance of the external air flowing into the shell to a certain extent, resulting in an increase in the fan speed; the increase in the fan speed will generate greater noise, resulting in an insignificant noise reduction effect. Utility Model Content

[0003] The first technical problem solved by the utility model is to provide a shell structure for a gas water heater, which effectively solves the problem of poor noise reduction effect of the existing shell structure for a gas water heater.

[0004] The second technical problem solved by the utility model is to provide a gas water heater. The technical effect brought by the shell structure for the gas water heater is the same as the technical effect of the shell structure for the gas water heater, so it will not be repeated.

[0005] The above technical problems are solved by the following technical solutions:

[0006] A shell structure for a gas water heater comprises a water heater shell and a back plate, wherein the water heater shell comprises a bottom shell, the back plate is connected to the outside of the bottom shell, an air inlet channel of the whole machine is formed between the back plate and the bottom shell, and the air inlet of the whole machine is located below the water heater shell; an air inlet group for air to enter the water heater shell is opened on the bottom shell, the air inlet group is located in the air inlet channel, and the air inlet group comprises a plurality of rows of first air inlet groups arranged along the height direction of the water heater shell, each row of the first air inlet group comprises at least one first air inlet, and the first air inlets of two adjacent rows of the first air inlet groups are staggered.

[0007] Compared with the background technology, the shell structure for a gas water heater described in the utility model has the following beneficial effects: after the bottom shell and the back plate are assembled, an air inlet channel with the air inlet of the whole machine located below the water heater shell is formed between the back plate and the bottom shell, and the air inlet group is arranged in the air inlet channel, so that the air inlet stroke of air entering the water heater shell can be extended, the air inlet flow rate can be reduced, and thus the air inlet noise can be reduced; and by arranging the air inlet group as a plurality of rows of first air inlet groups arranged along the height direction of the burner shell, and staggering the first air inlets of two adjacent rows of the first air inlet groups, the resistance of air entering any first air inlet can be reduced, that is, the wind resistance can be reduced, so that the air inlet is smooth, and the noise reduction effect of the shell structure for a gas water heater can be improved.

[0008] In one of the embodiments, the first air inlet group is located on the upper side of the bottom shell, a burner is provided in the water heater shell, the burner includes an air inlet area, and the air inlet area is located on the lower side of the water heater shell.

[0009] The shell structure for a gas water heater described in the utility model has the following beneficial effects: by setting the air inlet area on the lower side of the water heater shell and setting the first air inlet group on the upper side of the bottom shell, the air enters the water heater shell through the first air inlet and then flows downward until it enters the air inlet area, thereby further extending the air inlet stroke, reducing the air inlet flow rate, and thus reducing the air inlet noise, thereby improving the noise reduction effect of the shell structure for the gas water heater.

[0010] In one embodiment, the first air inlet is a first louver window, and the air outlet direction of the first louver window is toward the top of the water heater housing.

[0011] The shell structure for a gas water heater described in the utility model has the following beneficial effects: by setting the first air inlet as a first louver window and directing the air outlet direction of the first louver window toward the top of the water heater shell, the air intake stroke can be further extended, the air intake flow rate can be reduced, and the air intake noise can be reduced, thereby improving the noise reduction effect of the shell structure for the gas water heater.

[0012] In one embodiment, the first air inlet is a first louver window, and the air outlet direction of the first louver window is toward the bottom of the water heater housing.

[0013] The shell structure for a gas water heater described in the utility model has the following beneficial effects: by setting the first air inlet as a first louver window and directing the air outlet of the first louver window toward the bottom of the water heater shell, the air intake effect of the burner is improved, thereby improving the smoke emission effect of the burner.

[0014] In one of the embodiments, an electrical component is disposed in the water heater housing, and the air inlet group further includes a second air inlet group disposed corresponding to the position of the electrical component, and the second air inlet group includes at least one second air inlet.

[0015] In one embodiment, the second air inlet is a second louver window, and the air outlet direction of the second louver window is toward the electrical device.

[0016] The shell structure for a gas water heater described in the utility model has the following beneficial effects: by adding a second air inlet group, setting the second air inlet as a second louver window, and directing the air outlet direction of the second louver window toward the electrical component, the air entering the water heater shell at the second air inlet has the effect of cooling the electrical component, thereby reducing the surface temperature rise of the electrical component and extending the service life of the electrical component.

[0017] In one embodiment, the bottom shell includes a peripheral portion of the bottom shell and a middle portion of the bottom shell, the middle portion of the bottom shell is arched outward relative to the peripheral portion of the bottom shell, the back plate is connected to the peripheral portion of the bottom shell, the first air inlet group is opened on the middle portion of the bottom shell, and the second air inlet group is arranged on the peripheral portion of the bottom shell.

[0018] The shell structure for a gas water heater described in the utility model has the following beneficial effects: the bottom shell is arranged as two parts, the periphery of the bottom shell and the middle of the bottom shell, and the middle part of the bottom shell is arched outward relative to the periphery of the bottom shell; since the first air inlet group and the second air inlet group are respectively arranged in the middle of the bottom shell and the periphery of the bottom shell, the flow performance of the air is improved, and turbulence is avoided when the air enters the first air inlet group and the second air inlet group.

[0019] In one of the embodiments, a first concave cavity and a second concave cavity independently arranged from each other are formed on the inner wall of the back plate facing the air inlet channel, and the air inlet channel includes a first air inlet channel formed between the first concave cavity and the bottom shell, and a second air inlet channel formed between the second concave cavity and the bottom shell; the first air inlet port group is arranged at a position of the bottom shell corresponding to the first air inlet channel, and the second air inlet port group is arranged at a position of the bottom shell corresponding to the second air inlet channel.

[0020] The shell structure for a gas water heater described in the utility model has the following beneficial effects: by adding independently arranged first and second concave cavities on the back plate, and forming the first air inlet channel and the second air inlet channel with the bottom shell respectively, the first air inlet channel and the second air inlet channel are independently arranged, and the first air inlet group is arranged at a position of the bottom shell corresponding to the first air inlet channel, and the second air inlet group is arranged at a position of the bottom shell corresponding to the second air inlet channel, so that the first air inlet group and the second air inlet group are independently arranged, thereby further improving the air flow performance.

[0021] In one of the embodiments, it is characterized in that a fan outlet is also provided on the water heater shell, the air inlet area of ​​the whole machine air inlet is S1, the total air inlet area of ​​the air inlet group is S2, and the air outlet area of ​​the fan outlet is S3, satisfying S2≥S1≥S3.

[0022] The above second technical problem is solved by the following technical solution:

[0023] A gas water heater comprises the above-mentioned shell structure for a gas water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A three-dimensional view of the shell structure of the gas water heater provided by the embodiment of the utility model;

[0026] Figure 2 A three-dimensional diagram of a water heater housing and a back plate separated from each other provided by an embodiment of the utility model;

[0027] Figure 3 An internal structural view of a water heater housing provided by an embodiment of the utility model;

[0028] Figure 4 The air duct flow diagram inside the gas water heater provided by the embodiment of the utility model;

[0029] Figure 5 A three-dimensional view of a shell structure of another gas water heater provided by an embodiment of the utility model;

[0030] Figure 6 A three-dimensional diagram of another water heater shell and back plate separated from each other provided by an embodiment of the utility model;

[0031] Description of reference numerals:

[0032] 1. Water heater shell; 11. Bottom shell; 111. First air inlet; 112. Second air inlet; 113. Peripheral part of the bottom shell; 114. Middle part of the bottom shell;

[0033] 2. back plate; 211. first concave cavity; 212. second concave cavity;

[0034] 3. Air inlet channel; 311. First air inlet channel; 312. Second air inlet channel;

[0035] 4. Burner; 41. Air inlet area; 411. Primary air inlet area; 412. Secondary air inlet area;

[0036] 5. Electrical components;

[0037] 6. Fan. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0039] In the description of the present application, it should be understood that the terms "peripheral", "middle", "upper", "lower", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In conventional technology, the air intake mode of the air-cooled combustion chamber is divided into two modes: forward air intake and reverse air intake. Specifically, when the forward air intake mode is adopted, the cold air flows from bottom to top in the cavity with the suction force of the fan, and when the reverse air intake mode is adopted, the cold air flows from top to bottom in the cavity. In order to reduce the noise of the shell structure of the gas water heater, sound absorption or sound insulation measures are usually added to the shell to reduce the noise of the whole machine. However, this solution will increase the resistance of the external air to flow into the shell to a certain extent, resulting in the need to increase the fan speed in order to increase the air volume to meet the use demand. However, the increase in the fan speed will generate greater noise, resulting in the noise reduction effect is not obvious. The embodiment of the present application takes the forward air intake as an example to improve the noise reduction effect.

[0043] Specifically, see Figures 1 to 6 , Figure 1 A three-dimensional view of the shell structure of the gas water heater in the embodiment of the present application is shown. Figure 1 The direction of the middle arrow is the air inlet direction of the gas water heater; Figure 2 A three-dimensional view of the housing body and the back plate in the embodiment of the present application is shown; Figure 3 The internal structure view of the water heater housing provided in the embodiment of the present application is shown; Figure 4 The figure shows the air duct flow direction diagram inside the gas water heater in the embodiment of the present application. Figure 5 A three-dimensional view of a shell structure of another gas water heater provided in an embodiment of the present application is shown; Figure 6 A three-dimensional view of a shell body and a back plate of another shell structure of a gas water heater provided in an embodiment of the present application is shown.

[0044] In the first implementation of this embodiment, Figures 1 to 4As shown, the shell structure of the gas water heater includes a water heater shell 1 and a back plate 2. The water heater shell 1 includes a bottom shell 11 and a side shell connected to the bottom shell 11 in a four-sided enclosed structure. The burner 4, the fan 6 and other components required for the gas water heater are installed in the space enclosed by the bottom shell 11 and the side shell. The back plate 2 is connected to the outside of the bottom shell 11. An air inlet channel 3 is formed between the back plate 2 and the bottom shell 11, and the air inlet of the whole machine is located below the water heater shell 1. The bottom shell 11 is provided with an air inlet group for air to enter the water heater shell 1. The air inlet group includes a plurality of rows of first air inlet groups arranged along the height direction of the water heater shell 1. Each row of the first air inlet group includes at least one first air inlet 111. The first air inlets 111 of two adjacent rows of the first air inlet groups are arranged in a staggered manner.

[0045] After the bottom shell 11 and the back plate 2 are assembled, an air inlet channel 3 with the air inlet of the whole machine located below the water heater shell 1 is formed between the back plate 2 and the bottom shell 11, and the air inlet group is arranged in the air inlet channel 3. This can extend the air inlet travel of the air entering the water heater shell 1, reduce the air inlet flow rate, and thus reduce the air inlet noise. By arranging the air inlet group as a plurality of rows of first air inlet groups arranged along the height direction of the burner 4 shell, and staggering the first air inlets 111 of two adjacent rows of first air inlet groups, the resistance of air entering any first air inlet 111 can be reduced, that is, the wind resistance is reduced, so that the air inlet is smooth, thereby improving the noise reduction effect of the shell structure for the gas water heater.

[0046] It can be explained that the number of first air inlets 111 in each row of the first air inlet group is not specifically limited. For example, it can be one, two, three or more. Of course, the number of rows of the first air inlet group is not specifically limited, and can be two, three or more rows.

[0047] like Figure 1 and Figure 2 As shown, the back plate 2 and the bottom shell 11 are fixed in a detachable connection manner. For example, the back plate 2 and the bottom shell 11 are both provided with a plurality of mounting holes, wherein the mounting holes of the bottom shell 11 are provided with an internal thread structure, and during installation, fasteners with an external thread structure such as screws and bolts are sequentially passed through the mounting holes of the back plate 2 and then screwed into the mounting holes of the bottom shell 11 until the back plate 2 is tightened to fix the back plate 2 on the bottom shell 11.

[0048] like Figures 2 to 4 As shown, the first air inlet group is located on the upper side of the bottom shell 11, and a burner 4 is arranged in the water heater shell 1. The burner 4 includes an air inlet area 41, and the air inlet area 41 is located on the lower side of the water heater shell 1. In this way, after the air enters the water heater shell 1 through the first air inlet 111, it flows downward until it enters the air inlet area 41, further extending the air inlet stroke, reducing the air inlet flow rate, and thus reducing the air inlet noise, thereby improving the noise reduction effect of the shell structure for the gas water heater.

[0049] It can be explained that the air inlet area 41 includes a primary air inlet area 411 and a secondary air inlet area 412. Specifically, air and gas are mixed and enter the combustion chamber of the burner 4 through the primary air inlet area 411 for combustion; the air volume is supplemented into the combustion chamber in the secondary air inlet area 412 to reduce the carbon monoxide content in the combustion chamber and achieve sufficient combustion.

[0050] It can be explained that the structure of the first air inlet 111 is not specifically limited. It can be a shutter structure, with a baffle added at the air outlet to guide the air outflow; it can also be a hole-shaped air outlet. Similarly, the air outlet direction of the first air inlet 111 is not specifically limited, for example, the air outlet direction of the first air inlet 111 is directed toward the top or bottom of the water heater housing 1.

[0051] As one of the embodiments, the first air inlet 111 is a first louver window, and the air outlet direction of the first louver window is toward the upper side of the water heater housing 1. Such a configuration can further extend the air intake stroke, reduce the air intake flow rate, and thus reduce the air intake noise, thereby improving the noise reduction effect of the housing structure for the gas water heater.

[0052] Of course, in other optional embodiments, the first air inlet 111 is a first louver window, and the air outlet direction of the first louver window is toward the bottom of the water heater housing 1. Such a configuration improves the air intake effect of the burner 4, thereby improving the smoke emission effect of the burner 4.

[0053] like Figures 2 to 4 As shown, an electrical component 5 is provided in the water heater housing 1, and the air inlet group further includes a second air inlet group arranged corresponding to the position of the electrical component 5, and the second air inlet group includes at least one second air inlet 112. It can be explained that the number of the second air inlets 112 in the second air inlet group is not specifically limited, and it is sufficient that the second air inlet 112 is arranged corresponding to the electrical component 5.

[0054] As one implementation manner, the second air inlet groups are provided in three rows, and each row of the second air inlet groups has one, two or more second air inlets 112 .

[0055] Similarly, there is no specific limitation on the air outlet direction of the second air inlet 112. For example, the air outlet direction of the second air inlet 112 is directly toward the electrical component 5, so that the air is directly blown toward the electrical component 5 for heat exchange; or toward an inner wall surface of the water heater housing 1, so that the air is turned back and then flows to the electrical component 5.

[0056] As one of the embodiments, the second air inlet 112 is a second louver window, and the air outlet direction of the second louver window is toward the electrical component 5; the air entering the water heater shell 1 at the second air inlet 112 has the effect of cooling the electrical component 5, reducing the surface temperature rise of the electrical component 5, and extending the service life of the electrical component 5.

[0057] like Figure 1 , Figure 2 As shown, the bottom shell 11 includes a bottom shell peripheral portion 113 and a bottom shell middle portion 114, the bottom shell middle portion 114 is arched outward relative to the bottom shell peripheral portion 113, the back plate 2 is connected to the bottom shell peripheral portion 113, the first air inlet group is provided on the bottom shell middle portion 114, and the second air inlet group is provided on the bottom shell peripheral portion 113. Such an arrangement can avoid turbulence when air enters the first air inlet group and the second air inlet group, thereby improving the flow performance of air.

[0058] like Figure 1 and Figure 4 As shown, a fan 6 is also provided in the water heater shell 1. The fan 6 is installed on the top of the water heater shell 1, and the fan outlet is arranged above the water heater shell 1 to discharge the gas obtained after combustion to the outside through an exhaust pipe, such as to a flue gas treatment device.

[0059] It can be explained that in the above embodiment, a fan outlet is also provided on the water heater housing 1, and the air inlet area of ​​the whole machine air inlet is defined as S1, the total air inlet area of ​​the air inlet group is defined as S2, and the air outlet area of ​​the fan outlet is defined as S3, satisfying S2≥S1≥S3. Such a setting ensures that the air intake volume meets the use requirements while reducing the speed of the fan 6, thereby reducing the noise generated by the fan 6.

[0060] It can be explained that, in the above embodiment, if the air inlet area of ​​the first air inlet group and the second air inlet group does not meet the use requirements, a third air inlet group can be added to the back panel 2, and the third air inlet group includes at least one third air inlet (not shown in the figure). At this time, the third air inlet group serves as a supplementary air inlet to increase the air intake volume.

[0061] In the second implementation of this embodiment, Figure 5 and Figure 6As shown, the difference from the first implementation of this embodiment is that the inner wall of the back plate 2 facing the air inlet channel 3 is formed with a first concave cavity 211 and a second concave cavity 212 which are independently arranged, and the air inlet channel 3 includes a first air inlet channel 311 formed between the first concave cavity 211 and the bottom shell 11, and a second air inlet channel 312 formed between the second concave cavity 212 and the bottom shell 11; the first air inlet group is arranged at a position corresponding to the first air inlet channel 311 of the bottom shell 11, and the second air inlet group is arranged at a position corresponding to the second air inlet channel 312 of the bottom shell 11. In this way, the first air inlet channel 311 and the second air inlet channel 312 are independently arranged, so that the first air inlet group and the second air inlet group are independently arranged, and the flow performance of the air is further improved.

[0062] The present application also provides a gas water heater, comprising the shell structure for the gas water heater provided in the above embodiment.

[0063] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The specific contents of the above specific implementations only express several implementations of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A shell structure for a gas water heater, characterized in that: The invention comprises a water heater shell (1) and a back plate (2), wherein the water heater shell (1) comprises a bottom shell (11), the back plate (2) is connected to the outside of the bottom shell (11), and an air inlet channel (3) is formed between the back plate (2) and the bottom shell (11), wherein the air inlet of the whole machine is located below the water heater shell (1); an air inlet group for air to enter the water heater shell (1) is provided on the bottom shell (11), the air inlet group is located in the air inlet channel (3), and the air inlet group comprises a plurality of rows of first air inlet groups arranged along the height direction of the water heater shell (1), each row of the first air inlet groups comprises at least one first air inlet (111), and the first air inlets (111) of two adjacent rows of the first air inlet groups are arranged in a staggered manner.

2. The shell structure for a gas water heater according to claim 1, characterized in that: The first air inlet group is located on the upper side of the bottom shell (11); a burner (4) is provided inside the water heater shell (1); the burner (4) comprises an air inlet area (41); and the air inlet area (41) is located on the lower side of the water heater shell (1).

3. The shell structure for a gas water heater according to claim 2, characterized in that: The first air inlet (111) is a first louver window, and the air outlet direction of the first louver window is toward the top of the water heater housing (1).

4. The shell structure for a gas water heater according to claim 2, characterized in that: The first air inlet (111) is a first louver window, and the air outlet direction of the first louver window is toward the bottom of the water heater housing (1).

5. The shell structure for a gas water heater according to claim 1, characterized in that: An electrical component (5) is provided in the water heater housing (1), and the air inlet group further comprises a second air inlet group arranged corresponding to the position of the electrical component (5), and the second air inlet group comprises at least one second air inlet (112).

6. The shell structure for a gas water heater according to claim 5, characterized in that: The second air inlet (112) is a second louver window, and the air outlet direction of the second louver window is toward the electrical device (5).

7. The shell structure for a gas water heater according to claim 5, characterized in that: The bottom shell (11) comprises a bottom shell peripheral portion (113) and a bottom shell middle portion (114); the bottom shell middle portion (114) is arched outward relative to the bottom shell peripheral portion (113); the back plate (2) is connected to the bottom shell peripheral portion (113); the first air inlet group is provided on the bottom shell middle portion (114); and the second air inlet group is provided on the bottom shell peripheral portion (113).

8. The shell structure for a gas water heater according to claim 5, characterized in that: A first concave cavity (211) and a second concave cavity (212) independently arranged from each other are formed on the inner wall of the back plate (2) facing the air inlet channel (3); the air inlet channel (3) comprises a first air inlet channel (311) formed between the first concave cavity (211) and the bottom shell (11), and a second air inlet channel (312) formed between the second concave cavity (212) and the bottom shell (11); the first air inlet group is arranged at a position of the bottom shell (11) corresponding to the first air inlet channel (311), and the second air inlet group is arranged at a position of the bottom shell (11) corresponding to the second air inlet channel (312).

9. The shell structure for a gas water heater according to any one of claims 1 to 8, characterized in that: The water heater housing (1) is also provided with a fan air outlet, the air inlet area of ​​the whole machine air inlet is S1, the total air inlet area of ​​the air inlet group is S2, and the air outlet area of ​​the fan air outlet is S3, satisfying S2≥S1≥S3.

10. A gas water heater, characterized in that: The invention comprises a shell structure for a gas water heater as described in any one of claims 1 to 9.

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