Air cooling box body for gas water heater and gas water heater

Abstract

The utility model relates to an air cooling box for a gas water heater and the gas water heater. The air cooling box comprises an inner shell, an outer shell and an air cooling cavity formed between the inner shell and the outer shell. According to the air cooling box body disclosed by the utility model, the pair of air inlet groups is arranged on the outer shell, the at least one air outlet group is arranged on the inner shell, and the air outlet group is arranged between the pair of air inlet groups along the airflow passing direction of the combustion chamber, so that two strands of cold air respectively enter the air cooling chamber from the pair of air inlet groups; according to the air cooling device, the air inlet group is arranged in the air cooling chamber, and flows out of the air cooling chamber from the air outlet group after oppositely approaching to flow, so that the flow stroke of cold air can be shortened, the heat exchange time of the cold air is shortened, the phenomenon of higher local temperature rise caused by longer flow stroke of the cold air when the air cooling box adopts forward air inlet or reverse air inlet is prevented, and the phenomenon of higher local temperature is further avoided.

Description

Technical Field

[0001] The utility model relates to a gas water heater, in particular to an air-cooled box body used for a gas water heater and the gas water heater. Background Art

[0002] The shell structure used for gas water heaters is provided with an air-cooled combustion chamber inside, and the temperature inside the combustion chamber is reduced by air-cooled circulation heat exchange cooling. At present, the air intake methods of the air-cooled combustion chamber are divided into two methods: forward air intake and reverse air intake. Specifically, when the forward air intake method is used, the cold air flows from bottom to top in the chamber with the fan suction force, and the temperature inside the combustion chamber is high during combustion, and the cold air is heated, resulting in a higher temperature rise in the upper part of the air-cooled cavity; when the reverse air intake method is used, the cold air flows from top to bottom in the cavity, and the temperature rise in the lower part of the air-cooled cavity is higher. Due to the high local temperature, the life of the electrical components inside the gas water heater is affected. Utility Model Content

[0003] The first technical problem solved by the utility model is to provide an air-cooled box for a gas water heater, which effectively solves the problem of high local temperature.

[0004] The second technical problem solved by the utility model is to provide a gas water heater. The technical effect brought by the air-cooled box for the gas water heater is the same as the technical effect of the air-cooled box 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 wind-cooled box for a gas water heater, the wind-cooled box is a frame structure with openings at both ends; the wind-cooled box comprises an inner shell, an outer shell and a wind-cooled chamber formed between the inner shell and the outer shell, the inner shell encloses a combustion chamber; the outer shell is provided with a pair of air inlet groups for air to enter the wind-cooled chamber, the inner shell is provided with at least one group of air outlet groups for air to flow out of the wind-cooled chamber; in the direction of airflow through the combustion chamber, at least one group of the air outlet groups is located between a pair of the air inlet groups.

[0007] Compared with the background technology, the air-cooled box for gas water heater described in the utility model has the following beneficial effects: by arranging a pair of air inlet groups on the outer shell, at least one group of air outlet groups on the inner shell, and arranging the air outlet group between the pair of air inlet groups along the air flow direction of the combustion chamber, two streams of cold air enter the air-cooled chamber from the pair of air inlet groups respectively, and flow out of the air-cooled chamber from the air outlet groups after converging, which can shorten the flow stroke of the cold air, reduce the heat exchange time of the cold air, and prevent the occurrence of high local temperature rise caused by the long cold air flow stroke when the air-cooled box adopts forward or reverse air intake, thereby avoiding the occurrence of high local temperature.

[0008] In one embodiment, a pair of the air inlet groups are respectively an upper air inlet group and a lower air inlet group; the openings at both ends of the air-cooled box are respectively a heat flow inlet and a heat flow outlet, the height difference between the upper air inlet group and the heat flow outlet is H1, and the height difference between the lower air inlet group and the heat flow inlet is H2, satisfying H1=H2.

[0009] In one embodiment, the value range of H1 and H2 is 10-20 mm.

[0010] In one of the embodiments, the number of the air outlet groups is one group; in the direction of air flow through the combustion chamber, the air outlet group is located between a pair of the air inlet groups.

[0011] The air-cooled box for a gas water heater described in the utility model has the following beneficial effects: by arranging a group of air outlet groups in the middle position of a pair of air inlet groups, the flow paths of two streams of cold air are made consistent, such as the shortened stroke amount and the total stroke amount are consistent, so that the temperature rise of the two streams of cold air is consistent when they flow through the air outlet groups, making the heat exchange more uniform, and further avoiding the occurrence of local high temperature.

[0012] In one embodiment, a partition structure is provided in the air-cooling box body to separate the air-cooling chamber; the number of the air outlet groups is two, and the two groups of air outlet groups are located on opposite sides of the partition structure along the airflow direction of the combustion chamber.

[0013] The air-cooling box for a gas water heater described in the utility model has the following beneficial effects: the air-cooling chamber is separated by using a partition structure, and two groups of air outlet groups are respectively arranged on opposite sides of the partition structure along the height direction of the air-cooling box, so that two streams of cold air flow out of the air-cooling chamber through the two groups of air outlet groups respectively, thereby preventing the two streams of cold air from colliding with each other when flowing out, improving the turbulence phenomenon, improving the flow performance of the cold air, and facilitating lowering the temperature.

[0014] In one embodiment, the partition structure is a partition independently arranged between the inner shell and the outer shell; or the partition structure is a boss structure protruding from the inner shell toward the outer shell and abutting against the outer shell; or the partition structure is a boss structure protruding from the outer shell toward the inner shell and abutting against the inner shell.

[0015] The air-cooled box for a gas water heater described in the utility model has the beneficial effect of arranging partitions of different forms to facilitate selection of assembly schemes as needed, thereby reducing the labor cost generated when the assembly time is long.

[0016] In one embodiment, the air outlet group includes a plurality of air outlets arranged circumferentially around the inner shell.

[0017] In one embodiment, the air inlet group includes a plurality of air inlets arranged around the circumference of the outer shell.

[0018] The air-cooled box for a gas water heater described in the utility model has the following beneficial effects: by arranging multiple air outlets in a form of circumferential arrangement around an inner shell body, and arranging multiple air inlets in a form of circumferential arrangement around an outer shell body, the heat exchange process is made more uniform, further avoiding the occurrence of local high temperatures.

[0019] In one embodiment, the inner shell is detachably connected to the outer shell.

[0020] The above second technical problem is solved by the following technical solution:

[0021] A gas water heater comprises a combustion chamber and the above-mentioned air-cooling box for the gas water heater connected to the outlet of the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 An exploded view of the air-cooling box provided by the embodiment of the utility model when the air-cooling box and the combustion chamber are in a separated state;

[0024] Figure 2 The air duct flow diagram when the air-cooled box and the combustion chamber provided in the embodiment of the utility model are in the installed state;

[0025] Figure 3 A front view of a gas water heater provided by an embodiment of the utility model;

[0026] Figure 4 An exploded view of another air-cooling box provided by an embodiment of the utility model when the air-cooling box and the combustion chamber are in a separated state;

[0027] Figure 5 Another air duct flow diagram when the air-cooled box and the combustion chamber are in an installed state provided by an embodiment of the utility model;

[0028] Description of reference numerals:

[0029] 1. Inner shell; 11. Air outlet group; 12. Inner plate; 121. Position limiting protrusion; 13. Combustion chamber;

[0030] 2. Outer shell; 21. Air inlet group; 211. Upper air inlet group; 212. Lower air inlet group; 22. U-shaped outer panel; 23. Combustion chamber mounting outer panel;

[0031] 3. Air-cooled chamber; 31. Upper air-cooled chamber; 32. Lower air-cooled chamber;

[0032] 4. Partition structure;

[0033] 5. Combustion chamber. DETAILED DESCRIPTION

[0034] 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.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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, rather than indicating or implying 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.

[0036] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "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.

[0038] See also Figures 1 to 5 , Figure 1 An exploded view of the air-cooled box body when the air-cooled box body and the combustion chamber are in a separated state in the embodiment of the present application is shown; Figure 2 The figure shows the air duct flow direction diagram when the air-cooled box and the combustion chamber provided in the embodiment of the present application are in the installed state. Figure 2 The direction of the middle arrow is the direction of cold air flow. Figure 2 The vertical direction is the direction of airflow (gas) passing through the combustion chamber; Figure 3 A front view of a gas water heater provided in an embodiment of the present application is shown; Figure 4 An exploded view of another air-cooling box provided by an embodiment of the present application when the air-cooling box and the combustion chamber are in a separated state is shown; Figure 5 Another air-cooling box provided by an embodiment of the present application and a combustion chamber in an installed state are shown in the air duct flow diagram. Figure 5 The direction of the middle arrow is the direction of cold air flow. Figure 5 The vertical direction is the direction in which the airflow (gas) in the combustion chamber passes.

[0039] In the first implementation of this embodiment, Figures 1 to 3 As shown, the air-cooling box is a frame structure with openings at both ends; the air-cooling box includes an inner shell 1, an outer shell 2, and an air-cooling chamber 3 formed between the inner shell 1 and the outer shell 2; the outer shell 2 is provided with a pair of air inlet groups 21 for air to enter the air-cooling chamber 3, and the inner shell 1 is provided with at least one group of air outlet groups 11 for air to flow out of the air-cooling chamber 3; the inner shell 1 encloses a combustion chamber 13, and in the direction of air flow through the combustion chamber 13, at least one group of air outlet groups 11 is located between the pair of air inlet groups 21. In this arrangement, two streams of cold air enter the air-cooling chamber 3 from a pair of air inlet groups 21 respectively, and flow toward each other and then flow out of the air-cooling chamber 3 from the air outlet group 11, which can shorten the flow path of the cold air, reduce the heat exchange time of the cold air, and prevent the phenomenon of high local temperature rise caused by the long flow path of the cold air when the air-cooling box adopts forward or reverse air intake, thereby avoiding the phenomenon of high local temperature.

[0040] like Figures 1 to 3As shown, a pair of air inlet groups 21 are respectively an upper air inlet group 211 and a lower air inlet group 212; the openings at both ends of the air-cooled box are respectively a heat flow inlet and a heat flow outlet. Specifically, the heat flow inlet is defined as being arranged at the top end surface of the air-cooled box, and the heat flow outlet is defined as being arranged at the bottom end surface of the air-cooled box. At this time, the height difference between the air inlet group 21 and the heat flow outlet is H1, and the height difference between the lower air inlet group 212 and the heat flow inlet is H2, satisfying H1=H2.

[0041] It can be explained that the value range of H1 and H2 is 10-20 mm.

[0042] It can be explained that the number of the air outlet group 11 is one group; in the direction of the airflow passing through the combustion chamber 13, the air outlet group 11 is located between a pair of air inlet groups 21. This arrangement allows the two streams of cold air to flow through the same path, such as the same shortened stroke amount and the same total stroke amount, so that the temperature rise of the two streams of cold air when flowing through the air outlet group 11 is consistent, achieving uniform heat exchange and further avoiding the occurrence of high local temperatures.

[0043] It can be explained that there is no limitation on the number of air outlets in the air outlet group 11. For example, the air outlet group 11 includes a plurality of air outlets arranged circumferentially around the inner shell 1.

[0044] Likewise, there is no specific limitation on the number of air inlets in the air inlet group 21. For example, the air inlet group 21 includes a plurality of air inlets arranged around the circumference of the outer shell 2.

[0045] This arrangement makes the heat exchange process more uniform and further avoids the occurrence of local high temperatures.

[0046] like Figure 1 and Figure 2 As shown, the inner shell 1 is detachably connected to the outer shell 2 and forms a circumferentially arranged air-cooling chamber 3 or a plurality of circumferentially arranged independent air-cooling chambers 3 .

[0047] It can be explained that the shape of the outer shell 2 is not specifically limited. For example, the outer shell 2 is in the form of a four-sided enclosed structure. Specifically, the outer shell 2 is formed by splicing a U-shaped outer plate 22 and a combustion chamber mounting outer plate 23. The U-shaped outer plate 22 is formed by bending a plate. A group of flanges for mounting external devices are formed at the top outer edge of the U-shaped outer plate 22 and the top outer edge of the combustion chamber mounting outer plate 23. A plug-in slot is provided at the flange. The inner shell 1 includes four inner plates 12, three of which are respectively mounted on the inner sides of the three side plates of the U-shaped outer plate 22, and the other inner plate 12 is mounted corresponding to the combustion chamber mounting outer plate 23.

[0048] Take an inner plate 12 and a side plate of a U-shaped outer plate 22 as an example. A pair of plug-in slots are provided above the side plate. A pair of limiting protrusions 121 are provided on the inner plate 12 corresponding to the positions of the pair of plug-in slots. The pair of limiting protrusions 121 are respectively inserted into the pair of plug-in slots. Then the inner plate 12 is fixed to the side plate by screws. The side plate and the inner plate 12 form a sealed cavity. The above process is repeated until three inner plates 12 are respectively assembled with the three side plates of the U-shaped outer plate 22 to form three sealed cavities; another inner plate 12 is assembled with the combustion chamber mounting outer plate 23 to form another sealed cavity. Each sealed cavity is correspondingly provided with a pair of air inlet groups 21 and air outlet groups 11, and each sealed cavity forms a cooling flow channel separately.

[0049] Similarly, the U-shaped outer plate 22 and the combustion chamber mounting outer plate 23 are fixed by a disassembly connection. Specifically, the U-shaped outer plate 22 and the combustion chamber mounting outer plate 23 are both provided with a plurality of mounting holes, wherein the mounting hole of the U-shaped outer plate 22 is provided with an internal thread structure. During installation, a fastener with an external thread structure such as a screw or a bolt is inserted through the mounting hole of the combustion chamber mounting outer plate 23 and then screwed into the mounting hole of the U-shaped outer plate 22 until the combustion chamber mounting outer plate 23 is tightened to fix the U-shaped outer plate 22.

[0050] Similarly, each inner plate 12 and the side wall surface of the outer shell 2 for mounting each inner plate 12 are fixed by a disassembly connection method. Specifically, taking an inner plate 12 and a side wall surface as an example, the inner plate 12 and the side wall surface are both provided with a plurality of mounting holes, wherein the mounting hole of the inner plate 12 is provided with an internal thread structure. When installing, the inner plate 12 is placed inside the outer shell 2, and fasteners with an external thread structure such as screws and bolts are passed through the mounting holes of the side wall surface and then screwed into the mounting holes of the inner plate 12 until the inner plate 12 is tightened to fix it on the side wall surface.

[0051] It should be noted that in the above embodiment, cold air enters the air cooling chamber 3 from the upper air inlet group 211 and the lower air inlet group 212 respectively, then converges and flows out from the centrally arranged air outlet group 11 and enters the combustion chamber 5.

[0052] In the second implementation of this embodiment, Figure 4 and Figure 5 As shown, the difference from the first implementation of this embodiment is that a partition structure 4 is provided in the air-cooling box body to separate the air-cooling chamber 3; there are two groups of air outlet groups 11, and the airflow passing directions of the combustion chamber 13 of the two groups of air outlet groups 11 are respectively located on opposite sides of the partition structure 4. In this arrangement, the two streams of cold air flow out of the air-cooling chamber 3 through the two groups of air outlet groups 11, respectively, to prevent the two streams of cold air from colliding with each other when flowing out, improve the turbulence phenomenon, improve the flow performance of the cold air, and facilitate the reduction of temperature.

[0053] It can be explained that there is no specific limitation on the arrangement form of the partition structure 4 .

[0054] As one embodiment, the partition structure 4 is a partition independently arranged between the inner shell 1 and the outer shell 2 .

[0055] As another embodiment, the partition structure 4 is a boss structure that protrudes from the inner shell 1 toward the outer shell 2 and abuts against the outer shell 2 .

[0056] Of course, in other optional embodiments, the partition structure 4 is a boss structure that protrudes from the outer shell 2 toward the inner shell 1 and abuts against the inner shell 1 .

[0057] By configuring in this way, by providing separators of different forms, it is convenient to select an assembly plan as needed, so as to reduce the labor cost generated when the assembly time is long.

[0058] The present application also provides a gas water heater, comprising a combustion chamber 5 and an air-cooling box for the gas water heater provided in the above embodiment connected to the outlet of the combustion chamber 5 .

[0059] 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.

[0060] 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. An air-cooled box for a gas water heater, characterized in that: The air-cooling box is a frame structure with openings at both ends; the air-cooling box comprises an inner shell (1), an outer shell (2) and an air-cooling chamber (3) formed between the inner shell (1) and the outer shell (2); the outer shell (2) is provided with a pair of air inlet groups (21) for air to enter the air-cooling chamber (3), and the inner shell (1) is provided with at least one group of air outlet groups (11) for air to flow out of the air-cooling chamber (3); the inner shell (1) encloses a combustion chamber (13), and in the direction of air flow through the combustion chamber (13), at least one group of the air outlet groups (11) is located between the pair of the air inlet groups (21).

2. The air-cooled box for a gas water heater according to claim 1, characterized in that: A pair of the air inlet groups (21) are respectively an upper air inlet group (211) and a lower air inlet group (212); the openings at both ends of the air-cooled box are respectively a heat flow inlet and a heat flow outlet; the height difference between the upper air inlet group (211) and the heat flow outlet is H1, and the height difference between the lower air inlet group (212) and the heat flow inlet is H2, satisfying H1=H2.

3. The air-cooled box for a gas water heater according to claim 2, characterized in that: The value range of H1 and H2 is 10-20 mm.

4. The air-cooled box for a gas water heater according to any one of claims 1 to 3, characterized in that: The number of the air outlet groups (11) is one group; in the direction of airflow passing through the combustion chamber (13), the air outlet group (11) is located in the middle of a pair of the air inlet groups (21).

5. The air-cooled box for a gas water heater according to any one of claims 1 to 3, characterized in that: A partition structure (4) is provided in the air-cooling box body for separating the air-cooling chamber (3); the number of the air outlet groups (11) is two, and the two groups of air outlet groups (11) are respectively located on opposite sides of the partition structure (4) along the direction of air flow through the combustion chamber (13).

6. The air-cooled box for a gas water heater according to claim 5, characterized in that: The partition structure (4) is a partition independently arranged between the inner shell (1) and the outer shell (2); or the partition structure (4) is a boss structure that protrudes from the inner shell (1) toward the outer shell (2) and abuts against the outer shell (2); or the partition structure (4) is a boss structure that protrudes from the outer shell (2) toward the inner shell (1) and abuts against the inner shell (1).

7. The air-cooled box for a gas water heater according to any one of claims 1 to 3, characterized in that: The air outlet group (11) comprises a plurality of air outlets arranged circumferentially around the inner shell (1).

8. The air-cooled box for a gas water heater according to any one of claims 1 to 3, characterized in that: The air inlet group (21) comprises a plurality of air inlets arranged around the circumference of the outer shell (2).

9. The air-cooled box for a gas water heater according to any one of claims 1 to 3, characterized in that: The inner shell (1) is detachably connected to the outer shell (2).

10. A gas water heater, characterized in that: The invention comprises a combustion chamber (5) and an air-cooled box for a gas water heater as claimed in any one of claims 1 to 9 connected to the outlet of the combustion chamber (5).

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