Gas water heater

Abstract

The utility model relates to the technical field of water heaters, in particular to a gas water heater. The gas water heater comprises a shell and a controller. The shell is provided with a first containing cavity and a first ventilation hole. The controller comprises a control box and a control module, the control box is provided with a second containing cavity for containing the control module, the control box is installed on the inner wall of the shell and provided with a second ventilation hole, and the first ventilation hole, the second ventilation hole and the second containing cavity are sequentially communicated and form a heat dissipation channel isolated from the first containing cavity in a sealed mode. The first ventilation hole, the second ventilation hole and the second containing cavity are sequentially communicated to form an independent heat dissipation channel, so that external air enters the second containing cavity of the control box through the first ventilation hole and the second ventilation hole and conducts air cooling on the control module, independent heat dissipation of the control module is achieved, the temperature rise of the control module is effectively reduced, and the service life of the control module is prolonged. Therefore, the fault rate of the controller is reduced, and the service life of the controller is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field especially relates to a gas water heater. BACKGROUND

[0002] In the gas water heater, the heat generated by combustion heat exchange and the heat generated by the controller itself make the controller in a high temperature environment, which affects the service life of the components of the controller. The existing controller mainly uses the way of installing heat insulation board or sticking heat insulation cotton outside the control box for heat insulation, which cannot effectively reduce the temperature rise of the controller, not only increases the failure rate of the controller, but also shortens the service life of the controller. SUMMARY

[0003] The utility model solves the technical problem that a gas water heater can effectively solve the technical problem of increasing the failure rate and shortening the service life of the controller in the prior art due to the controller being in a high temperature environment.

[0004] The above technical problem is solved by the following technical scheme:

[0005] The gas water heater comprises:

[0006] The shell has a first accommodating cavity and is provided with a first ventilation hole;

[0007] The controller comprises a control box and a control module, the control box has a second accommodating cavity for accommodating the control module, the control box is installed on the inner wall of the shell and is provided with a second ventilation hole, and the first ventilation hole, the second ventilation hole and the second accommodating cavity are sequentially communicated and form a heat dissipation channel that is sealed from the first accommodating cavity.

[0008] Compared with the background art, the gas water heater has the beneficial effects that:

[0009] The shell is provided with the first ventilation hole, the control box is installed on the inner wall of the shell and is provided with the second ventilation hole, the first ventilation hole, the second ventilation hole and the second accommodating cavity are sequentially communicated and form an independent heat dissipation channel, so that the external air enters the second accommodating cavity of the control box through the first ventilation hole and the second ventilation hole and cools the control module, the independent heat dissipation of the control module is realized, the temperature rise of the control module is effectively reduced, the failure rate of the controller is reduced, and the service life of the controller is improved.

[0010] In one of the embodiments, the inner wall of the shell is provided with a convex body outward, the inner side of the convex body is provided with a first sealing element in the circumferential direction, and the bottom wall of the convex body is provided with the first ventilation hole;

[0011] The control box cover is arranged on the inner side of the convex bump and presses the first sealing element, so that the control box, the inner side of the convex bump and the first sealing element form a closed interlayer cavity, and the first vent hole communicates with the second vent hole through the interlayer cavity.

[0012] In one of the embodiments, the convex bump comprises a first convex bump, the bottom wall of the first convex bump is outwardly provided with a second convex bump, and the first sealing element is arranged on the first convex bump and surrounds the circumference of the second convex bump; the bottom wall of the second convex bump is provided with the first vent hole.

[0013] In one of the embodiments, along the height direction of the shell, the first vent hole is a louver hole with an opening downward. In one of the embodiments, along the axial direction of the second vent hole, the projection of the shell on the second vent hole does not coincide with the first vent hole.

[0014] In one of the embodiments, the control box comprises a box body and a box cover, the box cover is buckled on the box body and surrounds the second accommodating cavity, and the box body and / or the box cover is provided with the second vent hole.

[0015] The first sealing groove is arranged on the inner wall of the box body in the circumferential direction, the second sealing groove is arranged on the inner wall of the box cover in the circumferential direction, the first sealing groove and the second sealing groove are oppositely arranged and surround a sealing cavity, and the second sealing element is installed in the sealing cavity.

[0016] In one of the embodiments, the bottom wall of the first sealing groove is protrudingly provided with a first supporting protruding rib, the bottom wall of the second sealing groove is protrudingly provided with a second supporting protruding rib, and the second sealing element is clamped between the first supporting protruding rib and the second supporting protruding rib.

[0017] In one of the embodiments, the side wall of one of the box body and the box cover is provided with a threading groove, and the corresponding side wall of the other one of the box body and the box cover surrounds a threading hole with the threading groove.

[0018] In one of the embodiments, the side wall of one of the box body and the box cover outwardly extends a threading part, the threading part is provided with the threading groove, the corresponding side wall of the other one of the box body and the box cover is provided with a positioning groove, when the box cover is buckled on the box body, the threading part is inserted into the positioning groove, and the groove wall of the positioning groove and the threading groove surround the threading hole.

[0019] In one of the embodiments, one of the box body and the box cover is provided with a buckle in the circumferential direction, and the other one of the box body and the box cover is correspondingly provided with a clamping groove in the circumferential direction, and the buckle and the clamping groove are clamped and matched. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the internal structure schematic view of the gas water heater provided by the embodiment of the present application;

[0021] Figure 2 is the structural exploded schematic view of the shell, control box and first sealing element of the gas water heater provided by the embodiment of the present application;

[0022] Figure 3 is the sectional view of the internal structure of the gas water heater provided by the embodiment of the present application;

[0023] Figure 4 is the structural exploded schematic view of the control box provided by the embodiment of the present application;

[0024] Figure 5 is the structural schematic view of the box body provided by the embodiment of the present application;

[0025] Figure 6 is the structural schematic view of the box cover provided by the embodiment of the present application.

[0026] The component names and labels in the figure are as follows:

[0027] 1, shell; 11, convex bump; 110, first ventilation hole; 111, first convex bump; 112, second convex bump; 12, cover plate; 2, control box; 21, box body; 211, first sealing groove; 212, first support convex rib; 213, threading part; 2131, threading groove; 214, buckle; 215, mounting plate; 216, first partition plate; 22, box cover; 220, second ventilation hole; 221, second sealing groove; 222, second support convex rib; 223, positioning groove; 224, clamping groove; 225, second partition plate; 3, control module; 4, first sealing element; 5, second sealing element. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present application will be further described below in conjunction with the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 As shown, this embodiment proposes a gas water heater, specifically a balanced flue gas water heater. A balanced flue gas water heater is a sealed system that isolates the water heater and its associated flue from indoor air. When in use, outdoor air is drawn into the water heater through the flue for combustion and heat exchange, and the resulting flue gas is then discharged outdoors through the flue. Of course, this gas water heater can also be other types of water heaters, which are not specifically limited here.

[0034] In gas water heaters, the heat generated by combustion and the heat generated by the controller itself keeps the controller in a high-temperature environment, affecting the lifespan of its components. Existing controllers mainly achieve heat insulation by adding heat insulation boards or applying heat insulation cotton to the outside of the control box 2, which cannot effectively reduce the temperature rise of the controller. This not only increases the failure rate of the controller but also shortens its lifespan.

[0035] To solve the above problems, such as Figure 2 and Figure 3 As shown, the gas water heater includes a casing 1 and a controller. The casing 1 has a first accommodating cavity and a first ventilation hole 110. The controller includes a control box 2 and a control module 3. The control box 2 has a second accommodating cavity to accommodate the control module 3. The control box 2 is installed on the inner wall of the casing 1 and has a second ventilation hole 220. The first ventilation hole 110, the second ventilation hole 220, and the second accommodating cavity are sequentially connected to form a heat dissipation channel that is sealed and isolated from the first accommodating cavity. The casing 1 has a first ventilation hole 110, and the control box 2 is installed on the inner wall of the casing 1 and has a second ventilation hole 220. The first ventilation hole 110, the second ventilation hole 220, and the second accommodating cavity are sequentially connected to form an independent heat dissipation channel, allowing external air to enter the second accommodating cavity of the control box 2 through the first ventilation hole 110 and the second ventilation hole 220 and perform air cooling on the control module 3. This achieves independent heat dissipation for the control module 3, effectively reducing the temperature rise of the control module 3, thereby reducing the failure rate of the controller and improving its service life.

[0036] Specifically, the inner wall of the outer casing 1 has an outwardly facing protrusion 11, and a first sealing element 4 is arranged circumferentially on the inner side of the protrusion 11. A first ventilation hole 110 is opened on the bottom wall of the protrusion 11. The control box 2 is placed on the inner side of the protrusion 11 and presses the first sealing element 4, so that the control box 2, the inner side of the protrusion 11, and the first sealing element 4 form a sealed interlayer cavity. The first ventilation hole 110 communicates with the second ventilation hole 220 through the interlayer cavity. By setting the protrusion 11, an interlayer cavity is formed between the control box 2 and the outer casing 1. Air first enters the interlayer cavity and then enters the second accommodating cavity of the control box 2 through the second ventilation hole 220, realizing uniform air flow. At the same time, the control box 2 presses the first sealing element 4 on the inner side of the protrusion 11 to realize the installation of the control box 2 on the outer casing 1, ensuring that the interlayer cavity is completely separated from the internal space of the outer casing 1. In addition, the convex bulge 11 increases the distance between the first ventilation hole 110 and the second ventilation hole 220 in the front-to-back direction, preventing external water (such as rainwater) from directly entering the control box 2 through the first ventilation hole 110 and the second ventilation hole 220, thereby preventing the control module 3 from being corroded and improving the safety of the controller and the waterproof rating of the gas water heater.

[0037] like Figure 2 and Figure 3As shown, the control box 2 is a rectangular shell. A mounting plate 215 extends outward from the rear sidewall of the control box 2 along the front-to-back direction. The rear sidewall of the control box 2 is fitted to the inner sidewall of the outer shell 1, and the mounting plate 215 is threadedly connected to the outer shell 1. Multiple second ventilation holes 220 are spaced apart along the height direction (vertical direction in the figure) of the rear sidewall of the control box 2. Multiple first ventilation holes 110 are spaced apart along the height direction of the outer shell 1 on the bottom wall of the protrusion 11 to increase the overall opening area of ​​the ventilation holes, thereby increasing the airflow into and out of the second accommodating cavity and improving the heat dissipation and cooling effect on the control module 3. External air enters the second accommodating cavity of the control box 2 after passing through the first ventilation holes 110, the interlayer cavity, and the second ventilation holes 220, to provide air cooling for the control module 3 installed in the second accommodating cavity, effectively reducing the temperature rise of the control module 3.

[0038] In one embodiment, such as Figure 3 As shown, the convex bulge 11 includes a first convex bulge 111, and a second convex bulge 112 is provided with the bottom wall of the first convex bulge 111 facing outward. A first sealing member 4 is disposed on the first convex bulge 111 and surrounds the circumference of the second convex bulge 112. A first ventilation hole 110 is opened on the bottom wall of the second convex bulge 112. The first sealing member 4 is in the form of a closed ring and is arranged inside the first convex bulge 111 around the outer edge of the second convex bulge 112, so as to avoid the first sealing member 4 from blocking the first ventilation hole 110 and affecting the airflow of the first ventilation hole 110. By setting the first convex bulge 111 and the second convex bulge 112, the distance between the first ventilation hole 110 and the second ventilation hole 220 in the front-to-back direction is further increased, which further reduces the probability that external water (such as rainwater) will directly enter the control box 2 through the first ventilation hole 110 and the second ventilation hole 220, thereby improving the waterproof effect of the outer shell 1 and the safety of the controller.

[0039] In one embodiment, the first ventilation hole 110 is a downward-facing louvered opening along the height direction of the outer casing 1. Specifically, a cover plate 12 is integrally formed on the outward-facing side wall of the outer casing 1, and the side wall of the outer casing 1 and the cover plate 12 together form the downward-facing first ventilation hole 110 along the height direction of the outer casing 1. The cover plate 12 is integrally formed on the outer casing 1 by stamping, so that the opening of the first ventilation hole 110 faces downward, allowing water to drip off the outer surface of the cover plate 12 from the outer casing 1, preventing it from entering the second accommodating cavity of the control box 2, further improving the waterproof effect of the outer casing 1 and the safety of the controller.

[0040] It should be noted that, along the axial direction (front-back direction in the figure) of the second ventilation hole 220, the projection of the second ventilation hole 220 onto the outer casing 1 does not coincide with the first ventilation hole 110. This arrangement ensures that the first ventilation hole 110 and the second ventilation hole 220 are completely misaligned along the height direction of the outer casing 1, further improving the waterproofing of the outer casing 1 and the safety of the controller.

[0041] likeFigures 4-6 As shown, the control box 2 includes a box body 21 and a box cover 22. The box cover 22 is fastened to the box body 21 and forms a second accommodating cavity. The box body 21 and / or the box cover 22 have a second ventilation hole 220. A first sealing groove 211 is provided circumferentially inside the box body 21, and a second sealing groove 221 is provided circumferentially inside the box cover 22. The first sealing groove 211 and the second sealing groove 221 are arranged opposite each other and form a sealing cavity. A second sealing element 5 is installed in the sealing cavity. The control box 2 is designed as a separate structure of the box body 21 and the box cover 22, which facilitates the disassembly and maintenance of the control module 3. By installing the second sealing element 5 in the sealing cavity, the sealing effect between the box body 21 and the box cover 22 is ensured, preventing heat from the inside of the outer shell 1 from entering the second accommodating cavity of the control box 2.

[0042] Specifically, a first partition 216 is installed inside the box body 21, and a second partition 225 is installed inside the box cover 22. Both the first partition 216 and the second partition 225 are U-shaped. The first partition 216 divides the internal space of the box body 21 into a cavity for installing the control module 3 and a U-shaped first sealing groove 211. The second partition 225 divides the internal space of the box cover 22 into a cavity for installing the control module 3 and a U-shaped second sealing groove 221. When the box body 21 and the box cover 22 are assembled into the control box 2, the two cavities of the box body 21 and the box cover 22 form a second accommodating cavity for accommodating the control module 3. The second sealing element 5 is adapted to the structure of the two sealing grooves, that is, the second sealing element 5 is U-shaped. The two second sealing elements 5 are respectively adapted and installed in the corresponding first sealing groove 211 and second sealing groove 221 to achieve the sealed assembly of the control box 2. The aforementioned first sealing element 4 and second sealing element 5 are both foam, which is installed by adhesive bonding, realizing the rapid assembly of the sealing elements.

[0043] It should be noted that the lid 22 in this embodiment has a second ventilation hole 220. In other embodiments, the box body 21 has a second ventilation hole 220 or both the lid 22 and the box cover 22 have second ventilation holes 220, as long as the second ventilation hole 220 is connected to the second accommodating cavity of the control box 2.

[0044] like Figure 5 and Figure 6As shown, the bottom wall of the first sealing groove 211 is provided with a first supporting rib 212, and the bottom wall of the second sealing groove 221 is provided with a second supporting rib 222. The second sealing member 5 is sandwiched between the first supporting rib 212 and the second supporting rib 222. Specifically, the first supporting rib 212 and the second supporting rib 222 have the same structure, both including multiple transverse ribs and multiple longitudinal ribs, so that the first sealing groove 211 is provided with multiple intersecting first supporting ribs 212 in a grid pattern, and the second sealing groove 221 is provided with multiple intersecting second supporting ribs 222 in a grid pattern, so that the two second sealing members 5 are respectively supported and installed on the corresponding first supporting ribs 212 and second supporting ribs 222, realizing the clamping installation of the two second sealing members 5 in the left-right direction in the figure. By setting supporting ribs, not only is the structural strength of the control box 2 improved, but the depth of the two sealing grooves is also reduced, thereby reducing the thickness of the second seal 5 in the left-right direction in the figure. This not only reduces costs, but also facilitates the rapid assembly and fine-tuning of the position of the second seal 5, thus improving the installation efficiency of the second seal 5.

[0045] In one embodiment, a threading groove 2131 is formed on the side wall of one of the box body 21 and the box cover 22, and the corresponding side wall of the other box body 21 and the threading groove 2131 forms a threading hole. By separately providing the threading groove 2131 on the box body 21 or the box cover 22, the molding difficulty of the box body 21 and the box cover 22 is reduced, thereby reducing the manufacturing cost of the control box 2. At the same time, the threading hole can be formed by closing the threading groove 2131 on the side wall of the box body 21 and the box cover 22 that does not have a threading groove 2131, thus improving the quality of the threading hole.

[0046] like Figure 5 and Figure 6 As shown, the box body 21 has multiple wire-passing grooves 2131 on both the upper and lower sidewalls along the height direction of the outer shell 1. The structure, number, and installation position of the wire-passing grooves 2131 can be flexibly adjusted according to the wiring harness of the control module 3, and are not specifically limited here. In other embodiments, the box cover 22 has multiple wire-passing grooves 2131 on both the upper and lower sidewalls along the height direction of the outer shell 1.

[0047] Furthermore, one of the box body 21 and the box lid 22 has a threading portion 213 extending outward from its side wall. The threading portion 213 has a threading groove 2131. The other side wall of the box body 21 and the box lid 22 has a positioning groove 223. When the box lid 22 is fastened to the box body 21, the threading portion 213 is inserted into the positioning groove 223. The groove wall of the positioning groove 223 and the threading groove 2131 form a threading hole. Through the insertion and cooperation of the threading portion 213 and the positioning groove 223, the positioning assembly of the box body 21 and the box lid 22 is achieved, improving the assembly accuracy and efficiency of the box body 21 and the box lid 22.

[0048] like Figures 4-6 As shown, one of the box body 21 and the box cover 22 is provided with a buckle 214 along the circumference, and the other of the box body 21 and the box cover 22 is provided with a corresponding slot 224 along the circumference. The buckle 214 and the slot 224 engage with each other. Through the engagement of the buckle 214 and the slot 224, the box body 21 and the box cover 22 can be quickly assembled and disassembled, improving the assembly and disassembly efficiency of the control box 2.

[0049] Specifically, the box body 21 has latches 214 on its upper and lower sidewalls along the height direction of the outer shell 1 and on its front sidewall along the front-rear direction. The lid 22 has slots 224 on its upper and lower sidewalls along the height direction of the outer shell 1 and on its front sidewall along the front-rear direction. Since the rear sidewalls of the box body 21 and the lid 22 are fitted to the inner wall of the outer shell 1, the rear sidewall of the box body 21 has slots 224, and the rear sidewall of the lid 22 has latches 214. In other embodiments, the box body 21 and the lid 22 can also be assembled and connected by fasteners such as screws, which is not specifically limited here.

[0050] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas water heater characterised in that, The utility model relates to a kind of heat dissipation device, including: Shell (1), the shell (1) has first accommodating cavity and is opened with first vent hole (110); Controller, the controller includes control box (2) with control module (3), the control box (2) has the second accommodating cavity of accommodating the control module (3), the control box (2) is installed on the inner wall of the shell (1) and is opened with second vent hole (220), the first vent hole (110), the second vent hole (220) and the second accommodating cavity sequentially communicate and form heat dissipation channel with the first accommodating cavity sealed isolation.

2. The gas water heater of claim 1, wherein, The inner wall of the shell (1) is outwardly provided with a convexity (11), the inner side of the convexity (11) is provided with a first seal (4) in the circumferential direction, and the bottom wall of the convexity (11) is provided with the first vent hole (110). The control box (2) is arranged on the inner side of the convexity (11) and presses the first seal (4) tightly, so that the control box (2), the inner side of the convexity (11) and the first seal (4) form a closed interlayer cavity, and the first vent hole (110) is communicated with the second vent hole (220) through the interlayer cavity.

3. The gas water heater of claim 2, wherein, The convexity (11) includes a first convexity (111), and the bottom wall of the first convexity (111) is outwardly provided with a second convexity (112). The first seal (4) is arranged on the first convexity (111) and surrounds the circumferential direction of the second convexity (112). The bottom wall of the second convexity (112) is provided with the first vent hole (110).

4. The gas water heater of claim 1, wherein, Along the height direction of the shell (1), the first vent hole (110) is a louver hole with an opening downward.

5. The gas water heater of claim 1, wherein, Along the axial direction of the second vent hole (220), the projection of the shell (1) and the first vent hole (110) do not coincide.

6. The gas water heater according to any one of claims 1 to 5, wherein The control box (2) includes a box body (21) and a box cover (22), the box cover (22) is buckled on the box body (21) and surrounds the second accommodating cavity, and the box body (21) and / or the box cover (22) is provided with the second vent hole (220). A first sealing groove (211) is arranged in the circumferential direction in the box body (21), a second sealing groove (221) is arranged in the circumferential direction in the box cover (22), the first sealing groove (211) and the second sealing groove (221) are arranged opposite and surround a sealing cavity, and a second seal (5) is arranged in the sealing cavity.

7. The gas water heater of claim 6, wherein, The bottom wall of the first sealing groove (211) is provided with a first supporting protruding rib (212), the bottom wall of the second sealing groove (221) is provided with a second supporting protruding rib (222), and the second seal (5) is clamped between the first supporting protruding rib (212) and the second supporting protruding rib (222).

8. The gas water heater of claim 6, wherein, A threading groove (2131) is arranged on the side wall of one of the box body (21) and the box cover (22), and the side wall corresponding to the other of the box body (21) and the box cover (22) surrounds the threading hole with the threading groove (2131).

9. The gas water heater of claim 8, wherein, The side wall of one of the box body (21) and the box cover (22) extends outwardly with a threading portion (213) which is provided with a threading slot (2131), and the corresponding side wall of the other of the box body (21) and the box cover (22) is provided with a positioning slot (223), when the box cover (22) is buckled to the box body (21), the threading portion (213) is inserted into the positioning slot (223), and the slot wall of the positioning slot (223) and the threading slot (2131) surround the threading hole.

10. The gas water heater of claim 6, wherein, One of the box body (21) and the box cover (22) is provided with a buckle (214) in the circumferential direction, and the other of the box body (21) and the box cover (22) is provided with a clamping groove (224) in the circumferential direction, and the buckle (214) and the clamping groove (224) are clamped and matched.

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