Water heater shell structure and gas water heater

Abstract

The utility model relates to the technical field of gas water heaters, and discloses a water heater shell structure which comprises a main shell and a front sealing plate detachably connected to the main shell. The front sealing plate is matched with the main shell to jointly form an accommodating cavity, and a joint gap is formed at the joint of the front sealing plate and the main shell; a water outlet is formed in the bottom of the accommodating cavity; the guide channel extends longitudinally; and one end of the flow guide passage is communicated with the top end of the joint gap, and the other end of the flow guide passage is communicated with the water outlet, so that liquid permeating into the accommodating cavity from the top end of the joint gap is guided to the water outlet. The flow guide channel is arranged, accumulated water permeating into the containing cavity through the joint gap is guided and conveyed to the water drainage opening, the accumulated water is drained through the water drainage opening, and the interior of the containing cavity can be kept dry and clean continuously.

Description

Technical Field

[0001] The utility model relates to the technical field of gas water heaters, in particular to a water heater shell structure and a gas water heater. Background Art

[0002] A gas water heater is a water heater that uses gas as an energy source, and generates heat by burning gas to provide hot water for households or commercial places. Traditional gas water heaters are usually installed indoors, which not only occupies indoor space, but also has problems such as noise, unstable air pressure, air pollution and safety hazards. Therefore, outdoor gas water heaters are becoming increasingly popular on the current market.

[0003] However, the existing outdoor gas water heaters have the following problems in the application process: Since the outdoor gas water heaters are installed outdoors or even in the open air, the working environment is harsh, and the top of the shell is prone to water accumulation. To prevent the water accumulation from seeping into the interior of the water heater, the existing outdoor gas water heaters usually set a relatively complex sealing and waterproof structure at the shell connection, which is not conducive to production, installation and later disassembly and maintenance. Summary of the Utility Model

[0004] The utility model aims to provide a water heater shell structure to solve the above technical problems.

[0005] To achieve the above object, the following technical solutions are provided:

[0006] The utility model provides a water heater shell structure, including: a main shell, and a front cover plate detachably connected to the main shell; the front cover plate and the main shell jointly form an accommodation cavity, and a joint gap is formed at the connection between the front cover plate and the main shell; a drain port is arranged at the bottom of the accommodation cavity; and a longitudinally extending guiding channel is further included; one end of the guiding channel communicates with the top end of the joint gap, and the other end thereof communicates with the drain port, for guiding the liquid seeping into the accommodation cavity from the top end of the joint gap to the drain port.

[0007] As an optional scheme of the water heater shell structure provided by the utility model, the main shell is provided with a packaging port and an installation surface surrounding the edge of the packaging port; the front cover plate includes a main board corresponding to the packaging port and side plates surrounded and connected to the edge of the main board, and the side plates are detachably connected to the installation surface and form a joint gap with the installation surface; a baffle ring extends outward from the packaging port, and a guiding channel is jointly formed by the outer ring surface of the baffle ring, the inner wall surface of the side plate and the installation surface.

[0008] As an optional scheme of the water heater shell structure provided by the utility model, one end of the baffle ring close to the main board is turned outward with the packaging port as the center to form a flanging.

[0009] As an alternative solution to the water heater housing structure provided by the present utility model, a plurality of card slots are provided on the installation surface, and claws adapted to be inserted into the card slots are provided on the side plate.

[0010] As an alternative solution to the water heater housing structure provided by the present utility model, a hook for hooking the baffle ring is provided at the top of the side plate, and a limit baffle for abutting against the hook is provided at the top of one end of the baffle ring away from the encapsulation port.

[0011] As an alternative solution to the water heater housing structure provided by the present utility model, the baffle ring is integrally formed on the encapsulation port.

[0012] As an alternative solution to the water heater housing structure provided by the present utility model, a smoke outlet is provided at the top of the main housing; further comprising a smoke exhaust hood, which covers the top of the main housing and forms a smoke exhaust cavity communicating with the smoke outlet, a smoke exhaust port communicating with the smoke exhaust cavity is provided on the side wall of the smoke exhaust hood, and at least a part of the top end of the joint gap communicates with the smoke exhaust cavity.

[0013] As an alternative solution to the water heater housing structure provided by the present utility model, a water collecting plate is formed by extending one end of the side plate away from the main board towards the encapsulation port, a water collecting groove is jointly enclosed by the bottoms of the side plate, the main board and the water collecting plate, and a drain hole is formed at the bottom of the water collecting groove.

[0014] As an alternative solution to the water heater housing structure provided by the present utility model, a drainage surface is provided on the water collecting plate, and the drainage surface communicates with the installation surface for draining the liquid on the installation surface to the water collecting plate.

[0015] In a second aspect, the present utility model provides a gas water heater, including the water heater housing structure as described above.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. A water guiding passage is provided to guide and transport the accumulated water seeping into the accommodating cavity through the joint gap to the drain port, and the accumulated water is discharged through the drain port, so that the inside of the accommodating cavity can be continuously kept dry and clean;

[0018] 2. The baffle ring, the installation surface and the side plate cooperate to form a water guiding passage, so that the water guiding passage can be externally disposed of the accommodating cavity, which can not only effectively solve the problem of accumulated water discharge, but also avoid occupying the internal space of the accommodating cavity, which helps to improve the space utilization rate and maintainability of the water heater. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present invention and these drawings.

[0020] Figure 1 It is a schematic structural diagram of the water heater housing structure without a smoke exhaust hood;

[0021] Figure 2 It is a schematic structural diagram of the main housing;

[0022] Figure 3 It is a schematic structural diagram of the front sealing plate Figure 1 ;

[0023] Figure 4 It is a schematic structural diagram of the front sealing plate Figure 2 ;

[0024] Figure 5 It is a schematic structural diagram of the water heater housing structure with a smoke exhaust hood;

[0025] Figure 6 It is Figure 3 The enlarged view of part A in

[0026] In the figure:

[0027] 1. Main housing; 11. Encapsulation port; 12. Installation surface; 13. Baffle ring; 14. Flange; 15. Card slot;

[0028] 16. Limit baffle; 17. Smoke outlet; 2. Front sealing plate; 21. Main board; 22. Side board; 23. Ventilation opening; 24. Claw; 25. Hook; 26. Water collecting plate; 27. Water collecting groove; 28. Drainage surface; 3. Accommodation cavity; 4. Joint gap; 5. Drainage port; 6. Flow guiding passage; 7. Smoke exhaust hood; 71. Smoke exhaust cavity; 72. Smoke exhaust port. Detailed implementation manners

[0029] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the following will further describe in detail the technical solutions of the embodiments of the present invention with reference to the drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] Reference Figures 1 to 6 , a water heater housing structure, like the existing water heater housing, includes a main housing 1 and a front sealing plate 2. The front sealing plate 2 is detachably connected to the main housing 1 and cooperates with the main housing 1 to jointly form a receiving cavity 3. The receiving cavity 3 can be used to install various internal components of the water heater, such as a burner, a fan assembly, a heat exchanger assembly, etc. A joint gap 4 is formed at the connection between the front sealing plate 2 and the main housing 1. When the water heater is installed outdoors or even in an open-air environment, water accumulation will occur at the top of the main housing 1. The accumulated water carrying impurities such as dust and rust stains is likely to enter the receiving cavity 3 through the joint gap 4, thereby polluting the internal environment of the water heater, making the inside of the water heater humid, corroding components, affecting the performance of the water heater, and even causing safety problems such as short circuits.

[0034] It should be noted that the formation method, specific shape, and form of the joint gap 4 have diversity. Its shape can be linear, arc-shaped, or serrated. It can be formed continuously as a whole or be a plurality of independent individuals distributed irregularly, specifically depending on the connection method between the front sealing plate 2 and the main housing 1 in the actual application process. For example, when the front sealing plate 2 and the main housing 1 are connected to each other in a welding form, the joint gap 4 can be an irregular-shaped weld seam remaining at the welding position where the front sealing plate 2 and the main housing 1 are not fully welded; when the front sealing plate 2 and the main housing 1 are connected in a snap-fit form, the joint gap 4 can be a small opening formed due to the insufficient sealing contact at the snap-fit position between the front sealing plate 2 and the main housing 1.

[0035] In this regard, the improvement of the present application lies in that a drain port 5 for discharging liquid is provided at the bottom of the accommodating chamber 3, and also includes a longitudinally extending diversion passage 6, one end of which extends upward and is connected to the top of the joint gap 4, and the other end of the diversion passage 6 extends downward and is connected to the drain port 5. When working, the diversion passage 6 can divert and transport the accumulated water entering the accommodating chamber 3 through the joint gap 4 to the drain port 5, and discharge the accumulated water through the drain port 5, so that the interior of the accommodating chamber 3 can be continuously kept dry and clean.

[0036] Of course, the technical solution of "draining the accumulated water through the drain port 5 in cooperation with the diversion passage 6" has a variety of implementation structures. However, if the diversion passage 6 is not designed properly, it will not only occupy too much of the originally scarce internal space of the existing water heater, causing interference with later maintenance and increasing the difficulty of disassembly and installation, but may also cause accumulated water leakage. In response to the above potential technical problems, this embodiment provides a specific implementation structure of "draining the accumulated water through the drain port 5 in cooperation with the diversion passage 6".

[0037] Specifically, a sealing opening 11 is provided at the front end of the main shell 1, and a mounting surface 12 is formed around the edge of the sealing opening 11. The front sealing plate 2 includes a main board 21 and a side plate 22. The main board 21 is aligned with the sealing opening 11, and the side plate 22 is connected to the edge of the main board 21 and surrounds the sealing opening 11 in a closed loop. The side plate 22 is detachably connected to the mounting surface 12 by fasteners (screws or bolts), snaps, etc., and the side plate 22 and the mounting surface 12 form a joint gap 4 at the joint; the sealing opening 11 extends outward (i.e., toward the main board 21) to form a baffle ring 13, and the baffle ring 13, the side plate 22 and the mounting surface 12 are connected to the sealing opening 11. The mounting surface 12 cooperates with each other to form the above-mentioned diversion passage 6, and the drainage hole is arranged at the bottom of the mounting surface 12 and / or the bottom of the side plate 22. During operation, when the accumulated water on the top of the main shell 1 seeps downward to the accommodating chamber 3 through the joint gap 4, the outer wall of the top of the baffle ring 13 first contacts and receives the seeping accumulated water, and the accumulated water flows along the outer wall of the baffle ring 13, flows through the diversion passage 6 composed of the baffle ring 13, the mounting surface 12, and the side plate 22, and is transported downward, and finally reaches the bottom of the main shell 1, and is discharged through the drainage port 5 on the mounting surface 12 and / or the side plate 22, so as to prevent the accumulated water from contacting the internal components of the accommodating chamber 3.

[0038] Through the above technical solution, the flow guide path 6 is formed by the cooperation of the baffle ring 13, the mounting surface 12 and the side plate 22, so that the flow guide path 6 can be placed outside the packaging port 11 and the accommodating cavity 3. This design not only effectively solves the problem of accumulated water discharge, but also avoids occupying the internal space of the accommodating cavity 3, which helps to improve the space utilization and maintainability of the water heater.

[0039] In this embodiment, similar to the housing of the existing water heater, a ventilation opening 23 is provided on the main board 21 of the front sealing plate 2. The ventilation opening 23 is used to allow external air to enter the water heater for combustion support. Further, to prevent "water from splashing and transferring to the inner wall of the main board 21 and remaining in the ventilation opening 23 during transportation, and then entering the internal components of the water heater along with the air flow, affecting the gas combustion process", in this embodiment, one end of the baffle ring 13 close to the main board 21 is turned outward with the encapsulation opening 11 as the center to form a flanging 14, which limits the flow path of the accumulated water on the baffle ring 13 and prevents the accumulated water from overflowing the baffle ring 13 during transportation and transferring and splashing onto the main board 21.

[0040] To facilitate the cleaning of the air guiding passage 6, in this embodiment, the front sealing plate 2 is detachably connected to the main housing 1 in a snap - fit manner. Specifically: a plurality of card slots 15 are provided on the mounting surface 12 of the main housing 1. Correspondingly, card claws 24 that can be adaptively inserted into the card slots 15 are provided on the side plate 22.

[0041] Considering that when the gas water heater is applied outdoors, its application environment is relatively harsh. Although the snap - fit form is convenient for disassembling and installing the front sealing plate 2, improving the assembly and maintenance efficiency, its connection stability and firmness are compared with the detachable connection methods based on fasteners such as screws and bolts. For this reason, in this embodiment, the connection form between the front sealing plate 2 and the main housing 1 is optimized and improved in combination with the air guiding passage 6. Specifically: a hook 25 for hanging the baffle ring 13 is provided at the top of the side plate 22, and a limit baffle 16 for abutting against the hook 25 is provided at the top of one end of the baffle ring 13 away from the encapsulation opening 11. During use, the front sealing plate 2 can be tilted first to make the card claws 24 on the front sealing plate 2 snap into the card slots 15 on the mounting surface 12, and then the hook 25 at the top of the side plate 22 is hung on the outer ring surface of the baffle ring 13. The front sealing plate 2 is supported by the card slots 15 and the baffle ring 13 together, adding additional support points, and the limit baffle 16 contacts and abuts against the hook 25 to prevent the hook 25 from accidentally detaching from the baffle ring 13, thereby improving the overall stability and firmness of the connection between the front sealing plate 2 and the main housing 1 on the basis of snap - fit.

[0042] In this embodiment, the baffle ring 13 can be formed by welding to the encapsulation opening 11 or can be integrally formed on the encapsulation opening 11. In this embodiment, since the baffle ring 13 also plays a role in supporting the front baffle, for improving the connection stability, it is preferably integrally formed on the encapsulation opening 11 by means such as casting and hot - pressing.

[0043] In addition, similar to existing outdoor gas water heaters, a smoke outlet 17 is provided at the top of the main housing 1. The smoke outlet 17 is used to discharge the flue gas after combustion and heat exchange of the gas water heater to the outside. To prevent impurities such as rainwater and dust from entering the interior of the gas water heater through the smoke outlet 17, a smoke exhaust hood 7 is further provided at the top of the main housing 1. The smoke exhaust hood 7 covers the top of the main housing 1 and forms a smoke exhaust cavity 71 communicating with the smoke outlet 17. A smoke exhaust port 72 communicating with the smoke exhaust cavity 71 is provided on the side wall of the smoke exhaust hood 7. During operation, the smoke exhaust cavity 71 receives the flue gas conveyed by the smoke outlet 17, and the flue gas is discharged laterally through the smoke exhaust port 72 provided on the side wall of the smoke exhaust hood 7, ensuring the normal discharge of the flue gas of the gas water heater while preventing impurities such as rainwater and dust from entering the smoke outlet 17.

[0044] However, the above technical solution has the following problems: The gas for combustion and heat generation in the current gas water heater is usually natural gas or liquefied petroleum gas (LPG), and water vapor will be generated during combustion. The water vapor is discharged together with the flue gas. During the smoke exhaust process, part of the water vapor will be discharged together with the flue gas, but there will still be some water vapor that contacts the inner wall of the smoke exhaust hood 7 along with the flue gas, condenses into liquid water on the inner wall surface of the smoke exhaust cavity 71 and then remains in the smoke exhaust hood 7. Since the flue gas carries some impurities with strong corrosiveness, these liquid waters remaining in the smoke exhaust hood 7 will not only continuously corrode the top of the main housing 1, but also, when the outdoor temperature is relatively high, will evaporate back into water vapor and then backflow into the smoke outlet 17, increasing the internal humidity of the gas water heater and affecting the normal operation of the water heater.

[0045] To solve the above technical problems and prevent continuous water accumulation inside the smoke exhaust cavity 71, in this embodiment, at least part of the top end of the joint gap 4 formed by the front sealing plate 2 and the installation surface 12 is covered by the smoke exhaust hood 7, so that the smoke exhaust cavity 71 communicates with the joint gap 4. Through the above solution, not only can the smoke exhaust hood 7 partially cover the joint gap 4 to reduce the amount of accumulated water entering the joint gap 4 from the outer wall of the top of the main housing 1, but also the accumulated water condensed in the smoke exhaust cavity 71 can be discharged together through the joint gap 4, the guiding passage 6, and the drain port 5, so that the inside of the smoke exhaust cavity 71 can be continuously kept dry.

[0046] In addition, a water collecting plate 26 is formed at one end of the side plate 22 away from the main board 21 and extends towards the encapsulation port 11. The bottom of the side plate 22, the main board 21, and the water collecting plate 26 jointly enclose a water collecting groove 27. The drain hole is formed at the bottom of the water collecting groove 27. Through the above technical solution, the contact area between the side plate 22 and the installation surface 12 can be increased by the water collecting plate 26, so that the accumulated water contacts the main housing 1 less, and a water collecting groove 27 is formed at the bottom of the front sealing plate 2. The front sealing plate 2 uniformly discharges the accumulated water, reducing the erosion of the installation surface 12 and the main housing 1 by the accumulated water, and achieving the purpose of protecting the main housing 1.

[0047] Further, a drainage surface 28 is provided on the water collecting plate 26. The drainage surface 28 communicates with the mounting surface 12 and is used to drain the liquid on the mounting surface 12 to the water collecting plate 26. In this embodiment, a chamfer is provided at one end of the water collecting plate 26 away from the side plate 22, and the drainage surface 28 is formed on this chamfer. The drainage surface 28 communicates with the mounting surface 12, and its function is to quickly drain the rainwater, condensate or other liquids that may accumulate on the mounting surface 12 to the water collecting plate 26 and the side plate 22. The above design can ensure that the liquid will not stay on the mounting surface 12 for a long time, thereby reducing the erosion and damage of the mounting surface 12 and the main housing 1 by the liquid.

[0048] Embodiment 2

[0049] A gas water heater includes the water heater housing structure of Embodiment 1.

[0050] Note that the above is only the preferred embodiment of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A water heater housing structure, characterized in that: include: A main housing (1), and a front sealing plate (2) detachably connected to the main housing (1); The front sealing plate (2) cooperates with the main shell (1) to form a receiving cavity (3), and a joint gap (4) is formed at the connection between the front sealing plate (2) and the main shell (1); The bottom of the accommodating cavity (3) is provided with a drainage port (5); It also includes a longitudinally extending diversion passage (6); one end of the diversion passage (6) is connected to the top of the joint gap (4), and the other end is connected to the drain port (5), and is used to divert liquid entering the accommodating chamber (3) from the top of the joint gap (4) to the drain port (5).

2. The water heater housing structure according to claim 1, characterized in that: The main shell (1) is provided with a sealing opening (11) and a mounting surface (12) surrounding the edge of the sealing opening (11); the front sealing plate (2) comprises a main plate (21) aligned with the sealing opening (11) and a side plate (22) surrounding and connected to the edge of the main plate (21); the side plate (22) is detachably connected to the mounting surface (12) and is joined with the mounting surface (12) to form a joint gap (4); the sealing opening (11) extends outward to form a baffle ring (13); the outer ring surface of the baffle ring (13), the inner wall surface of the side plate (22) and the mounting surface (12) together form a flow guide passage (6).

3. The water heater housing structure according to claim 2, characterized in that: One end of the baffle ring (13) close to the main board (21) is folded outwards with the packaging opening (11) as the center to form a flange (14).

4. The water heater housing structure according to claim 2, characterized in that: The mounting surface (12) is provided with a plurality of card slots (15), and the side plate (22) is provided with card claws (24) adapted to be plugged into the card slots (15).

5. The water heater housing structure according to claim 3, characterized in that: A hook (25) for hooking the baffle ring (13) is provided at the top of the side plate (22), and a limit baffle (16) for abutting against the hook (25) is provided at the top of one end of the baffle ring (13) away from the packaging opening (11).

6. The water heater housing structure according to claim 5, characterized in that: The baffle ring (13) is integrally formed on the packaging opening (11).

7. The water heater housing structure according to claim 1, characterized in that: The main shell (1) is provided with a smoke outlet (17) at the top; and further comprises a smoke exhaust hood (7) which is covered on the top of the main shell (1) and forms a smoke exhaust cavity (71) connected to the smoke outlet (17); a side wall of the smoke exhaust hood (7) is provided with a smoke exhaust port (72) connected to the smoke exhaust cavity (71); and the top end of the joint gap (4) is at least partially connected to the smoke exhaust cavity (71).

8. The water heater housing structure according to claim 2, characterized in that: One end of the side plate (22) away from the main plate (21) extends toward the packaging opening (11) to form a water collecting plate (26); the side plate (22), the main plate (21) and the bottom of the water collecting plate (26) together form a water collecting trough (27); the drainage port is formed at the bottom of the water collecting trough (27).

9. The water heater housing structure according to claim 8, characterized in that: The water collecting plate (26) is provided with a drainage surface (28), and the drainage surface (28) is connected to the mounting surface (12) and is used to drain the liquid on the mounting surface (12) to the water collecting plate (26).

10. A gas water heater, characterized in that: It comprises a water heater shell structure as claimed in any one of claims 1 to 9.

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