Gas water heater

Abstract

The utility model belongs to the technical field of water heater, specifically disclose gas water heater, including casing, heat insulation box, controller and first sealing element, have the accommodating cavity in the casing, be provided with the vent hole of intercommunication outside on the casing, heat insulation box has the heat insulation cavity, the side wall of heat insulation box is provided with the opening that communicates with heat insulation cavity, the rim of opening is sealed and fixed in the inner wall of accommodating cavity, the vent hole is located in heat insulation cavity, form the wiring channel that communicates with heat insulation cavity between heat insulation box and casing, the controller is located in heat insulation cavity, and the controller has the wiring harness, and the wiring harness is worn in wiring channel, first sealing element is located in wiring channel and is around wiring harness, the inner wall of first sealing element and wiring channel's inner wall seal and fit, the inner wall of first sealing element and wiring harness seal and fit. The above structure can guarantee the normal wiring of controller, improve the heat insulation performance of heat insulation box and the heat dissipation performance of controller.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and more particularly to gas water heaters. Background Technology

[0002] A gas water heater is a gas appliance that uses the heat generated by the combustion of gas to heat water at a set temperature. The operation of a gas water heater is controlled by a control module, which operates in a high-temperature environment due to the heat from gas combustion. An insulated enclosure is installed outside the controller, forming a sealed cavity for insulation. However, the controller's wiring harness needs to be routed through the insulated enclosure to connect to other components inside the gas water heater housing. Existing insulated enclosures have wiring holes through which the wiring harness passes. These holes compromise the enclosure's airtightness, reducing insulation performance and making it difficult to provide a safe working environment for the controller. Furthermore, the sealed cavity hinders heat dissipation for the controller, reducing its lifespan and affecting the reliability of the gas water heater. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a gas water heater that can improve the heat insulation performance of the heat insulation box and the heat dissipation performance of the controller while ensuring the normal wiring of the controller.

[0004] The above-mentioned technical problems are solved by the following technical solutions:

[0005] A gas water heater is provided, comprising:

[0006] The housing has a receiving cavity inside and a ventilation hole on the housing that connects to the outside.

[0007] A heat insulation box, wherein the heat insulation box has a heat insulation cavity, and one side wall of the heat insulation box is provided with an opening communicating with the heat insulation cavity. The periphery of the opening is sealed and fixed to the inner wall of the receiving cavity. The ventilation hole is located in the heat insulation cavity. A wiring channel communicating with the heat insulation cavity is formed between the heat insulation box and the shell.

[0008] A controller is disposed in the heat insulation cavity, and the controller has a wiring harness that passes through the wiring channel;

[0009] A first sealing element is disposed in the wiring channel and wrapped around the wire harness. The outer wall of the first sealing element is in sealed contact with the inner wall of the wiring channel, and the inner wall of the first sealing element is in sealed contact with the wire harness.

[0010] Compared with the prior art, the gas water heater of this utility model has the following advantages: The gas water heater has an insulation cavity within its insulation box. One side wall of the insulation box has an opening communicating with the insulation cavity. The periphery of the opening is sealed and fixed to the inner wall of the cavity. A wiring channel communicating with the insulation cavity is formed between the insulation box and the housing. The controller is located within the insulation cavity, and the controller's wiring harness passes through the wiring channel. The housing has ventilation holes communicating with the outside. These ventilation holes are located within the insulation cavity. On one hand, the insulation box provides insulation, blocking heat radiation from the cavity, and the insulation cavity provides a relatively low-temperature, safe working environment for the controller. On the other hand, the ventilation holes communicating with the outside allow airflow between the insulation cavity and the outside, which can dissipate heat from the controller, ensuring its performance and service life. The first seal is located in the wiring channel and wraps around the wire harness. The outer wall of the first seal is sealed and fitted with the inner wall of the wiring channel, and the inner wall of the first seal is sealed and fitted with the wire harness. The wiring channel and the first seal allow the wire harness to pass through without weakening the heat insulation performance of the heat insulation cavity. The first seal reduces the heat generated by airflow between the heat insulation cavity and the receiving cavity, thus preventing the temperature inside the heat insulation cavity from rising and affecting the heat dissipation of the controller.

[0011] In one embodiment, a notch communicating with the opening is provided on one side wall of the heat insulation box, and the wiring channel is formed between the inner wall of the notch and the housing; or,

[0012] The inner wall of the housing is provided with a clearance groove, and the wiring channel is formed between the side wall of the opening and the groove wall of the clearance groove.

[0013] In one embodiment, one side wall of the heat insulation box is provided with a notch communicating with the opening, and the inner wall of the housing is provided with a relief groove, and the wiring channel is formed between the inner wall of the notch and the groove wall of the relief groove.

[0014] In one embodiment, the first seal includes a first sealing block and a second sealing block, the first sealing block being sealed and fixed to the clearance groove, the second sealing block being sealed and fixed to the notch, and the wire harness seal being sandwiched between the first sealing block and the second sealing block.

[0015] In one embodiment, the heat insulation box is provided with a support member located at the notch. The support member has a support end face, and the support end face and the inner sidewall of the notch are located in the same plane. The second sealing block is attached to the inner sidewall of the notch and extends to the support end face.

[0016] In one embodiment, the support member is disposed within the heat insulation cavity; and / or,

[0017] The support includes at least two support beams and at least two support vertical beams, which are intersected and connected to each other. The ends of the support beams and the ends of the support vertical beams are located in the same plane and form the support end face.

[0018] In one embodiment, the housing has a plurality of ventilation holes, which form at least two sets of ventilation hole groups. Each set of ventilation hole groups includes two or more ventilation holes, and the two sets of ventilation hole groups are spaced apart at both ends of the heat insulation box along the length direction of the heat insulation box.

[0019] In one embodiment, the housing of the controller has heat dissipation holes that communicate with the heat insulation cavity, and a plurality of heat dissipation holes are spaced apart along the length of the housing and located between two sets of ventilation hole groups.

[0020] In one embodiment, the heat insulation box has a sealing flange that surrounds the opening and is sealed and fixed to the housing.

[0021] In one embodiment, a notch communicating with the opening is provided on one side wall of the heat insulation box, and the wiring channel is formed between the inner wall of the notch and the housing, the notch extending to the sealing flange; and / or,

[0022] A second sealing element is provided between the sealing flange and the housing, and the sealing flange is sealed to the housing through the second sealing element. Attached Figure Description

[0023] Figure 1 This is a partial structural schematic diagram of a gas water heater provided in an embodiment of the present utility model;

[0024] Figure 2 This is a partial structural disassembly diagram of a gas water heater provided in an embodiment of the present utility model;

[0025] Figure 3 A partial structural cross-sectional view of a gas water heater provided in an embodiment of this utility model.

[0026] Label Explanation:

[0027] 1. Housing; 11. Receiving cavity; 12. Clearance groove; 13. Ventilation hole; 14. First threaded hole; 15. Second threaded hole;

[0028] 2. Insulation box; 20. Wiring channel; 21. Insulation cavity; 22. Opening; 23. Notch; 24. Support; 241. Support end face; 25. Sealing flange; 251. Second mounting hole; 26. Second sealing element; 27. Second mounting screw;

[0029] 3. Controller; 31. Housing; 311. First mounting hole;

[0030] 4. First sealing element; 41. First sealing block; 42. Second sealing block;

[0031] 100. Burner. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] like Figures 1-3 As shown, this embodiment of the utility model provides a gas water heater, in which the burner 100 creates a high-temperature environment inside the gas water heater. The gas water heater can improve the heat insulation performance of the insulation box 2 and the heat dissipation performance of the controller 3 while ensuring the normal wiring of the controller 3.

[0037] The gas water heater includes a shell 1, an insulation box 2, a controller 3, and a first sealing element 4. The shell 1 has a receiving cavity 11 and a ventilation hole 13 connecting to the outside. The insulation box 2 has an insulation cavity 21, and one side wall of the insulation box 2 has an opening 22 communicating with the insulation cavity 21. The periphery of the opening 22 is sealed and fixed to the inner wall of the receiving cavity 11, forming a wiring channel 20 between the insulation box 2 and the shell 1, communicating with the insulation cavity 21. The controller 3 is located in the insulation cavity 21 and has a wiring harness (not shown in the figure), which passes through the wiring channel 20. Because the shell 1 has a ventilation hole 13 communicating with the outside, and the ventilation hole 13 is located inside the insulation cavity 21, on the one hand, the insulation box 2 has a heat insulation effect, blocking heat radiation from the receiving cavity 11, and the insulation cavity 21 provides a relatively low-temperature, safe working environment for the controller 3; on the other hand, the ventilation hole 13 communicating with the outside allows airflow between the insulation cavity 21 and the outside, which can dissipate heat from the controller 3, ensuring the working performance and service life of the controller 3. The first sealing element 4 is disposed in the wiring channel 20 and wrapped around the wire harness. The outer wall of the first sealing element 4 is sealed and fitted with the inner wall of the wiring channel 20, and the inner wall of the first sealing element 4 is sealed and fitted with the wire harness. The wiring channel 20 and the first sealing element 4 are designed so that the wire harness can be passed through without weakening the heat insulation performance of the heat insulation cavity 21. The first sealing element 4 reduces the heat generated by the air flow between the heat insulation cavity 21 and the receiving cavity 11, avoids the temperature inside the heat insulation cavity 21 from rising and affecting the heat dissipation of the controller 3, avoids affecting the service life of the controller 3, and improves the working reliability of the gas water heater.

[0038] Controller 3 is an electronic control module that controls the operation of the host and monitors the operating status of the host. Its specific structure and control principle can be set with reference to the existing technology. This is not the focus of this application, and this embodiment does not limit it.

[0039] The first sealing element 4 and the wiring channel 20 are interference-fitted. The first sealing element 4 is made of flexible heat insulation cotton, which has the characteristics of good heat insulation effect, softness and light weight. The interference fit between it and the wiring channel 20 can effectively block the wiring channel 20 and has good wrapping properties, so it will not damage the wire harness.

[0040] There are various ways to form the wiring channel 20. In one embodiment, a notch 23 communicating with the opening 22 is provided on one side wall of the heat insulation box 2. The wiring channel 20 is formed between the inner wall of the notch 23 and the shell 1. The notch 23 can be opened at any position around the opening 22 of the heat insulation box 2. For example, it can be opened on the two side walls of the heat insulation box 2, or on the bottom wall or the top wall of the heat insulation box 2. It is not limited to the attached drawings of this embodiment. The specific setting can be made according to the requirements of the wiring harness insertion position.

[0041] In another embodiment, the inner wall of the housing 1 is provided with a clearance groove 12, and a wiring channel 20 is formed between the side wall of the opening 22 and the groove wall of the clearance groove 12. The length of the clearance groove 12 extends to the inner and outer sides of the side wall of the opening 22 to form the wiring channel 20. The wire harness enters the clearance groove 12 from the inner side of the heat insulation box 2 and extends to the outer side of the heat insulation box 2 within the clearance groove 12.

[0042] In the third embodiment, such as Figure 2 As shown, one side wall of the heat insulation box 2 has a notch 23 communicating with the opening 22. Meanwhile, the inner wall of the housing 1 has a relief groove 12. A wiring channel 20 is formed between the inner wall of the notch 23 and the groove wall of the relief groove 12. The wiring channel 20 can have a large cross-sectional size, facilitating the routing of wires. Furthermore, the relief groove 12 makes it easier to position and constrain the first sealing element 4.

[0043] For ease of installation, the first sealing element 4 includes a first sealing block 41 and a second sealing block 42. The first sealing block 41 is fixedly sealed to the clearance groove 12, and the second sealing block 42 is fixedly sealed to the notch 23. The wire harness is sealed and clamped between the first sealing block 41 and the second sealing block 42. During assembly, the controller 3 is first installed on the main housing 1 using the first mounting screw. Then, the position of the first sealing block 41 is constrained by the clearance groove 12, and the second sealing block 42 is bonded to the notch 23 of the heat insulation box 2. Subsequently, the wire harness of the controller 3 is placed above the first sealing block 41. When the heat insulation box 2 is placed over the controller 3, the second sealing block 42 is aligned with the first sealing block 41 to clamp the wire harness between the two.

[0044] In one embodiment, the heat insulation box 2 is provided with a support member 24 located at the notch 23. The support member 24 has a support end face 241, and the support end face 241 and the inner sidewall of the notch 23 are located in the same plane. The second sealing block 42 fits against the inner sidewall of the notch 23 and extends to the support end face 241. The support member 24 increases the contact area between the heat insulation box 2 and the second sealing block 42 through the support end face 241, ensuring the connection stability of the second sealing block 42 and reducing the risk of the second sealing block 42 falling off.

[0045] The support member 24 is disposed inside the heat insulation cavity 21 without affecting the appearance of the heat insulation box 2. The support member 24 is connected to the inner side of the box wall with the notch 23.

[0046] Specifically, the support member 24 includes at least two supporting horizontal beams and at least two supporting vertical beams. The supporting horizontal beams and supporting vertical beams are interconnected to form a frame structure. The ends of the supporting horizontal beams and the ends of the supporting vertical beams are located in the same plane and form supporting end faces 241. This frame structure increases the structural strength of the insulation box 2 while also facilitating its lightweight design. Figure 2As shown in the figure, the support member 24 consists of two support beams and two support vertical beams.

[0047] To further improve the heat dissipation performance of the controller 3, the housing 1 has multiple ventilation holes 13. Cooler ambient air is introduced through these holes 13 to cool the controller 3. Heat generated during the controller 3's operation is also dissipated to the outside through the airflow via the ventilation holes 13. The ventilation holes 13 create airflow between the insulation chamber 21 and the outside environment, facilitating heat dissipation and cooling of the controller 3. The multiple ventilation holes 13 form at least two sets of ventilation holes, each set including two or more ventilation holes 13. These two sets of ventilation holes are spaced apart at both ends of the insulation box 2 along its length, ensuring relatively uniform airflow at both ends. Each end of the controller 3 has a set of ventilation holes, further enhancing the uniformity of heat dissipation.

[0048] In one embodiment, the controller 3 has a housing 31 protecting the electronic components. The housing 31 has heat dissipation holes communicating with the heat insulation cavity 21. Multiple heat dissipation holes are spaced apart along the length of the housing 31, thus forming multiple heat dissipation holes located between two sets of ventilation hole groups. For example, as... Figure 2 As shown in the figure, the multiple ventilation holes 13 are divided into two groups. The ventilation hole group above the controller 3 has three ventilation holes 13, and the ventilation hole group below the controller 3 has two ventilation holes 13. The number and arrangement of ventilation holes 13 in each group are not limited to the figures in this embodiment, and can be set according to the specific structure and size of the controller 3.

[0049] Specifically, a first mounting hole 311 is provided on the outer casing 31, and a first mounting screw is inserted into the first mounting hole 311 and screwed into the first threaded hole 14 on the main casing 1 to realize the installation of the controller 3.

[0050] The heat insulation box 2 has a sealing flange 25, which surrounds the opening 22 and is sealed and fixed to the housing 1. The sealing flange 25 facilitates the installation of the heat insulation box 2, and the surface contact between the sealing flange 25 and the main housing 1 improves the sealing performance of the heat insulation cavity 21. Specifically, the sealing flange 25 has a second mounting hole 251, and a second mounting screw 27 passes through the second mounting hole 251 and is screwed into the second threaded hole 15 on the main housing 1 to achieve the installation of the heat insulation box 2.

[0051] In one embodiment, in order to avoid the sealing flange 25 from affecting the wiring channel 20, the notch 23 extends to the sealing flange 25. The notch 23 on the sealing flange 25 can avoid the first seal 4 and prevent the wire harness from being squeezed.

[0052] In one embodiment, a second sealing element 26 is provided between the sealing flange 25 and the housing 1, and the sealing flange 25 is sealed to the housing 1 through the second sealing element 26. The second sealing element 26 can be attached to the sealing flange 25, and the heat insulation box 2 can be placed on the controller 3. The second sealing element 26 seals the gap between the heat insulation box 2 and the main housing 1 to improve the sealing performance of the heat insulation cavity 21. The second mounting screw 27 passes through the second sealing element 26 and is then screwed into the second threaded hole 15 to fix the second sealing element 26.

[0053] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0054] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gas water heater, characterized in that, include: The housing (1) has a receiving cavity (11) inside and a ventilation hole (13) communicating with the outside on the housing (1); A heat insulation box (2) has a heat insulation cavity (21) inside. An opening (22) communicating with the heat insulation cavity (21) is provided on one side wall of the heat insulation box (2). The periphery of the opening (22) is sealed and fixed to the inner wall of the receiving cavity (11). The ventilation hole (13) is located inside the heat insulation cavity (21). A wiring channel (20) communicating with the heat insulation cavity (21) is formed between the heat insulation box (2) and the shell (1). A controller (3) is located in the heat insulation cavity (21). The controller (3) has a wire harness that passes through the wiring channel (20). The first sealing element (4) is disposed in the wiring channel (20) and wrapped around the wire harness. The outer wall of the first sealing element (4) is sealed and fitted with the inner wall of the wiring channel (20), and the inner wall of the first sealing element (4) is sealed and fitted with the wire harness.

2. The gas water heater according to claim 1, characterized in that, The heat insulation box (2) has a notch (23) on one side wall that communicates with the opening (22), and the wiring channel (20) is formed between the inner wall of the notch (23) and the shell (1); or, The inner wall of the housing (1) is provided with a clearance groove (12), and the wiring channel (20) is formed between the side wall of the opening (22) and the groove wall of the clearance groove (12).

3. The gas water heater according to claim 1, characterized in that, The heat insulation box (2) has a notch (23) on one side wall that communicates with the opening (22), and the inner wall of the housing (1) has a relief groove (12). The wiring channel (20) is formed between the inner wall of the notch (23) and the groove wall of the relief groove (12).

4. The gas water heater according to claim 3, characterized in that, The first sealing element (4) includes a first sealing block (41) and a second sealing block (42). The first sealing block (41) is sealed and fixed to the relief groove (12), and the second sealing block (42) is sealed and fixed to the notch (23). The wire harness seal is sandwiched between the first sealing block (41) and the second sealing block (42).

5. The gas water heater according to claim 4, characterized in that, The heat insulation box (2) is provided with a support member (24), which is located at the notch (23). The support member (24) has a support end face (241), and the support end face (241) and the inner wall of the notch (23) are located in the same plane. The second sealing block (42) is attached to the inner wall of the notch (23) and extends to the support end face (241).

6. The gas water heater according to claim 5, characterized in that, The support member (24) is disposed within the heat insulation cavity (21); and / or, The support member (24) includes at least two support beams and at least two support vertical beams, which are intersected and connected to each other. The ends of the support beams and the ends of the support vertical beams are located in the same plane and form the support end face (241).

7. The gas water heater according to claim 1, characterized in that, The housing (1) has a plurality of ventilation holes (13), and the plurality of ventilation holes (13) form at least two groups of ventilation holes. Each group of ventilation holes includes two or more ventilation holes (13), and the two groups of ventilation holes are spaced apart at both ends of the heat insulation box (2) along the length direction of the heat insulation box (2).

8. The gas water heater according to claim 7, characterized in that, The controller (3) has a heat dissipation hole on its outer shell (31) that connects to the heat insulation cavity (21). The multiple heat dissipation holes are spaced apart along the length of the outer shell (31) and located between two sets of ventilation hole groups.

9. The gas water heater according to claim 1, characterized in that, The heat insulation box (2) has a sealing flange (25) which is arranged around the opening (22) and is sealed and fixed to the housing (1).

10. The gas water heater according to claim 9, characterized in that, The heat insulation box (2) has a notch (23) on one side wall that communicates with the opening (22). The inner wall of the notch (23) forms the wiring channel (20) between the inner wall of the notch (23) and the housing (1). The notch (23) extends to the sealing flange (25); and / or, A second sealing element (26) is provided between the sealing flange (25) and the housing (1), and the sealing flange (25) is sealed to the housing (1) through the second sealing element (26).

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