Vehicle-mounted water heater waterproof structure and vehicle-mounted water heater

By setting the first barrier in the exhaust pipe of the vehicle water heater, the problem of insufficient waterproofing capabilities of the existing vehicle water heater is solved, and higher waterproof performance is achieved to ensure the normal use of the water heater on rainy days.

CN222837123UActive Publication Date: 2025-05-06ZHONGSHAN HUAKUN THERMAL ENERGY TECH CO LTD
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Patent Information

Application Number
CN202421554158.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-02
Publication Date
2025-05-06
Estimated Expiration
2034-07-02

AI Technical Summary

Technical Problem

The exhaust pipes and air inlet hole structures of existing vehicle-mounted water heaters have poor water resistance and are prone to water in rainy days, affecting the normal use of the water heater.

Method used

A first barrier member is provided in the exhaust pipe, and the first barrier portion is located at the lower part of the internal passage of the exhaust pipe to form a barrier to reduce the possibility of rainwater entering the interior of the housing assembly.

Benefits of technology

It effectively improves the waterproof performance of the car water heater, reduces the possibility of rainwater entering the interior of the shell assembly, and ensures that the water heater can still be used normally in rainy days.

✦ Generated by Eureka AI based on patent content.

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Abstract

The waterproof structure of the vehicle-mounted water heater comprises a shell assembly and a door body, the shell assembly is provided with an inner cavity, one side of the shell assembly is provided with an opening communicated with the inner cavity, an exhaust pipe is arranged in the inner cavity, and the door body is arranged in the exhaust pipe. The exhaust pipe extends in the horizontal direction or the air outlet end of the exhaust pipe inclines downwards relative to the air inlet end, the door body is rotationally connected to the shell assembly and can shield the opening, an avoiding hole corresponding to the exhaust pipe is formed in the door body, the exhaust pipe extends outwards from the inner cavity through the opening, and the air outlet end of the exhaust pipe can be in butt joint with the avoiding hole. A first blocking piece is arranged in the exhaust pipe and provided with a first blocking part, the first blocking part is located on the lower portion of an internal channel of the exhaust pipe, and a first ventilation opening is formed between the first blocking part and the upper wall of the internal channel of the exhaust pipe. According to the vehicle-mounted water heater, the possibility that rainwater enters the shell assembly can be reduced, and the waterproof performance of the vehicle-mounted water heater is improved.
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Description

Technical Field

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

[0002] A car water heater is a water heater that can be used in a car, and is usually used in a motorhome to provide hot water for users. In existing car water heaters, the smoke generated by combustion and heating is usually discharged outward through an exhaust pipe connected to the door body, and the air required for combustion usually enters the shell of the water heater from the outside through the air inlet on the door body. The structures of the smoke discharge and air inlet in existing car water heaters are relatively simple and have poor waterproof capabilities. Since the use environment is usually outdoors, it is easy for water to enter the exhaust pipe and the air inlet on rainy days. External water enters the shell of the water heater, which easily affects the normal use of the water heater, and the structure needs to be improved. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a waterproof structure of a vehicle-mounted water heater, by arranging a first blocking member in the exhaust pipe, using the first blocking part to form a barrier at the lower part of the internal channel of the exhaust pipe, so as to reduce the possibility of rainwater flowing from the exhaust pipe into the interior of the housing assembly, thereby improving the waterproof performance.

[0004] The utility model also provides a vehicle-mounted water heater with the vehicle-mounted water heater waterproof structure.

[0005] According to the first aspect of the utility model, the waterproof structure of the vehicle water heater described in the embodiment includes a shell assembly and a door body, the shell assembly has an inner cavity, one side of the shell assembly is provided with an opening connected to the inner cavity, an exhaust pipe is provided in the inner cavity, the exhaust pipe extends in a horizontal direction or the air outlet end of the exhaust pipe is inclined downward relative to the air inlet end, the door body is rotatably connected to the shell assembly and can cover the opening, a avoidance hole is provided on the door body corresponding to the exhaust pipe, the exhaust pipe extends outward from the inner cavity through the opening and the air outlet end of the exhaust pipe can be connected to the avoidance hole, a first blocking member is provided in the exhaust pipe, the first blocking member has a first blocking portion, the first blocking portion is located at the lower part of the internal channel of the exhaust pipe and a first vent is provided between the first blocking portion and the upper wall of the internal channel of the exhaust pipe.

[0006] According to the waterproof structure of the vehicle-mounted water heater described in the embodiment of the utility model, it has at least the following beneficial effects: when in use, the air inlet end of the exhaust pipe is docked with the fan assembly, and the first vent located on the upper side of the first blocking portion can connect the air inlet end of the exhaust pipe with the air outlet end, and the fan assembly can discharge the smoke generated by combustion and heating to the outside of the door body through the exhaust pipe. Since the exhaust pipe extends in the horizontal direction or the air outlet end of the exhaust pipe is tilted downward relative to the air inlet end, it is difficult for rainwater to enter the exhaust pipe. Even if some rainwater enters the exhaust pipe, since the first blocking member is arranged in the exhaust pipe, the first blocking portion is located at the lower part of the internal channel of the exhaust pipe, and the first blocking portion can be used to form a barrier at the lower part of the internal channel of the exhaust pipe, so as to reduce the possibility of rainwater flowing from the exhaust pipe into the interior of the shell assembly and improve the waterproof performance.

[0007] According to some embodiments of the utility model, a second blocking member is further provided in the exhaust pipe. The second blocking member is spaced apart from the first blocking member, and the second blocking member has a second blocking portion. The second blocking portion is located in the upper part of the internal channel of the exhaust pipe and a second vent is provided between the second blocking portion and the lower wall of the internal channel of the exhaust pipe.

[0008] According to some embodiments of the present invention, the first blocking portion can block the second vent along the axial direction of the exhaust pipe and / or the second blocking portion can block the first vent along the axial direction of the exhaust pipe.

[0009] According to some embodiments of the utility model, a partition mesh is provided at the air outlet end of the exhaust pipe.

[0010] According to some embodiments of the present utility model, the outlet end of the exhaust pipe is inserted into the avoidance hole, and a flexible sleeve is provided between the hole wall of the avoidance hole and the outer wall of the outlet end of the exhaust pipe.

[0011] According to some embodiments of the utility model, the shell assembly includes a face frame, the face frame has a recessed portion, the opening is arranged in the recessed portion, the door body is rotatably connected to the face frame and can be rotated into the recessed portion, the edge of the door body is provided with a first surrounding edge portion extending toward the recessed portion, and the edge of the opening is provided with a second surrounding edge portion extending toward the door body.

[0012] According to some embodiments of the present invention, a drainage gap is provided between the lower side wall surface of the recessed portion and the first surrounding edge portion at the lower side of the door body.

[0013] According to some embodiments of the utility model, an air inlet hole is provided at the lower portion of the door body, a baffle is provided at the lower portion of the opening corresponding to the air inlet hole, and an upper edge of the baffle is not lower than a position of the air inlet hole on the door body.

[0014] According to some embodiments of the utility model, the shell assembly includes a face frame, the opening is provided in the face frame, the door body is rotatably connected to the face frame, the lower part of the baffle is connected to the face frame, and the baffle is inclined relative to the face frame to guide the fluid to flow out from the lower side of the opening.

[0015] The vehicle-mounted water heater according to the embodiment of the second aspect of the utility model comprises the vehicle-mounted water heater waterproof structure according to the embodiment of the first aspect of the utility model.

[0016] According to the vehicle-mounted water heater described in the embodiment of the utility model, it has at least the following beneficial effects: by adopting the above-mentioned vehicle-mounted water heater waterproof structure, it is helpful to reduce the possibility of rainwater entering the interior of the shell component and improve the waterproof performance.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a partial structural schematic diagram of a vehicle-mounted water heater according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the vehicle-mounted water heater;

[0021] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0022] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the vehicle-mounted water heater;

[0023] Figure 5 for Figure 4 One of the schematic diagrams of the partial structural cross section of the vehicle-mounted water heater;

[0024] Figure 6 for Figure 4 The second schematic diagram of the partial structural cross-section of the vehicle-mounted water heater.

[0025] Reference numerals:

[0026] Shell assembly 100, inner cavity 101, opening 102, face frame 110, recessed portion 111, second surrounding edge portion 112, baffle 120;

[0027] The door body 200, the avoidance hole 201, the drainage gap 202, the air inlet hole 203, the flexible sleeve 210, and the first surrounding edge portion 220;

[0028] Exhaust pipe 300, first blocking member 310, first blocking portion 311, first vent 312, second blocking member 320, second blocking portion 321, second vent 322, and mesh member 330;

[0029] Blower assembly 400. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that if it involves orientation descriptions, the orientations or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0032] In the description of the present utility model, if the words "some", "greater than", "less than", "exceed", "over", "under", "within" etc. appear, among which "some" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "over", "under", "within" etc. are understood to include the number.

[0033] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 5A waterproof structure of a vehicle-mounted water heater comprises a shell assembly 100 and a door body 200, the shell assembly 100 having an inner cavity 101, one side of the shell assembly 100 being provided with an opening 102 communicating with the inner cavity 101, an exhaust pipe 300 being provided in the inner cavity 101, the exhaust pipe 300 extending in a horizontal direction or the air outlet end of the exhaust pipe 300 being inclined downward relative to the air inlet end, the door body 200 being rotatably connected to the shell assembly 100 and being capable of shielding the opening 102, an avoidance hole 201 being provided on the door body 200 corresponding to the exhaust pipe 300, the exhaust pipe 300 extending outward from the inner cavity 101 through the opening 102 and the air outlet end of the exhaust pipe 300 being capable of docking with the avoidance hole 201, a first blocking member 310 being provided in the exhaust pipe 300, the first blocking member 310 having a first blocking portion 311, the first blocking portion 311 being located at the lower portion of the internal passage of the exhaust pipe 300 and being provided with a first vent 312 between the first blocking portion 311 and the upper wall of the internal passage of the exhaust pipe 300.

[0036] It is understandable that if Figure 3 , Figure 4 and Figure 5 As shown, the opening 102 is provided at the front side of the housing assembly 100, the door body 200 is rotatably connected to the front side of the housing assembly 100 and can cover the opening 102, the exhaust pipe 300 is located at the upper part of the inner cavity 101, and its outlet end extends outward from the inner cavity 101 through the opening 102 and docks with the avoidance hole 201, the first blocking member 310 is located in the internal channel of the exhaust pipe 300, and the first vent 312 is provided on the first blocking member 310 and located on the upper side of the first blocking portion 311, and the first vent 312 can connect the air inlet end and the air outlet end of the exhaust pipe 300. When in use, the air inlet end of the exhaust pipe 300 docks with the fan assembly 400, and the fan assembly 400 can discharge the smoke generated by combustion and heating to the outside of the door body 200 through the exhaust pipe 300. In the present embodiment, the exhaust pipe 300 is tilted so that the air outlet end of the exhaust pipe 300 tilts downward relative to the air inlet end, so as to reduce the possibility of rainwater entering the exhaust pipe 300 and facilitate the discharge of rainwater entering the exhaust pipe 300. It is difficult for rainwater falling vertically to enter the downwardly tilted exhaust pipe 300. Even if some rainwater enters the exhaust pipe 300, since the first blocking member 310 is provided in the exhaust pipe 300, the first blocking portion 311 is located at the lower part of the internal channel of the exhaust pipe 300. The first blocking portion 311 can be used to form a barrier at the lower part of the internal channel of the exhaust pipe 300, so as to reduce the possibility of rainwater flowing from the exhaust pipe 300 into the interior of the shell assembly 100, thereby improving the waterproof performance.

[0037] In actual application, the first vent 312 may also be formed by the first blocking portion 311 and the upper wall of the internal channel of the exhaust pipe 300, and the exhaust pipe 300 may also extend in the horizontal direction, which may be changed accordingly according to actual use needs.

[0038] In some embodiments, a second blocking member 320 is further provided in the exhaust pipe 300. The second blocking member 320 is spaced apart from the first blocking member 310. The second blocking member 320 has a second blocking portion 321. The second blocking portion 321 is located at the upper part of the internal channel of the exhaust pipe 300 and a second vent 322 is provided between the second blocking portion 321 and the lower wall of the internal channel of the exhaust pipe 300.

[0039] It is understandable that if Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the second air vent 322 is provided on the second blocking member 320 and is located at the lower side of the second blocking portion 321. The air inlet end and the air outlet end of the exhaust pipe 300 can be connected through the first air vent 312 and the second air vent 322. By setting the second blocking member 320, a flow channel structure that bends up and down is formed in the exhaust pipe 300, which further reduces the possibility of rainwater flowing from the exhaust pipe 300 into the interior of the shell assembly 100 and improves the waterproof performance.

[0040] In actual application, the second vent 322 can also be formed by the second blocking portion 321 and the lower wall of the internal channel of the exhaust pipe 300. The second blocking member 320 and the first blocking member 310 can be provided in multiple and alternately arranged to further improve the waterproof performance. The specific settings can be made according to actual use needs.

[0041] Further, the first blocking portion 311 can block the second vent 322 along the axial direction of the exhaust pipe 300 and / or the second blocking portion 321 can block the first vent 312 along the axial direction of the exhaust pipe 300 .

[0042] It is understandable that if Figure 3 and Figure 5 As shown, the cross section of the internal passage of the exhaust pipe 300 is circular, the area of ​​the first blocking portion 311 is larger than the semicircular area of ​​the circle, so that the area of ​​the first vent 312 is smaller than the semicircular area of ​​the circle, and similarly, the area of ​​the second blocking portion 321 is also larger than the semicircular area of ​​the circle, so that the area of ​​the second vent 322 is smaller than the semicircular area of ​​the circle, thereby, the projection of the first blocking portion 311 along the axial direction of the exhaust pipe 300 can completely cover the second vent 322, and the projection of the second blocking portion 321 along the axial direction of the exhaust pipe 300 can also completely cover the first vent 312, forming mutual shielding along the axial direction of the exhaust pipe 300, further reducing the possibility of rainwater entering the interior of the housing assembly 100 from the exhaust pipe 300. In actual application, the size of the first blocking portion 311 and the size of the second blocking portion 321 can be set accordingly according to actual use needs.

[0043] In some embodiments, a screen 330 is provided at the outlet end of the exhaust pipe 300. Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, by setting a partition mesh 330 at the outlet end of the exhaust pipe 300, the partition mesh 330 can be used to prevent external foreign matter from entering the exhaust pipe 300, thereby improving its protection performance. In actual application, the specific structure of the partition mesh 330 can be set accordingly according to actual use needs.

[0044] In some embodiments, the outlet end of the exhaust pipe 300 is inserted into the avoidance hole 201 , and a flexible sleeve 210 is provided between the hole wall of the avoidance hole 201 and the outer wall of the outlet end of the exhaust pipe 300 .

[0045] It is understandable that if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a flexible sleeve 210 is provided at the avoidance hole 201, and the front end of the exhaust pipe 300 is inserted into the flexible sleeve 210. On the one hand, the gap between the outer wall of the exhaust pipe 300 and the inner wall of the avoidance hole 201 can be sealed to improve the waterproof performance. On the other hand, when the door body 200 is rotated to open or close, the flexible sleeve 210 can be deformed or moved accordingly to help avoid collision and interference between the front end of the exhaust pipe 300 and the door body 200, which is convenient for use. In actual application, the flexible sleeve 210 can be set accordingly according to actual use needs.

[0046] In some embodiments, the shell assembly 100 includes a face frame 110, the face frame 110 has a recessed portion 111, the opening 102 is provided in the recessed portion 111, the door body 200 is rotatably connected to the face frame 110 and can be rotated into the recessed portion 111, the edge of the door body 200 is provided with a first surrounding edge portion 220 extending toward the recessed portion 111, and the edge of the opening 102 is provided with a second surrounding edge portion 112 extending toward the door body 200.

[0047] It is understandable that if Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the face frame 110 has a recessed portion 111 that is recessed backwards, the opening 102 is located in the middle of the recessed portion 111, the door body 200 is rotatably connected to the face frame 110 and can be rotated into the recessed portion 111, the edge of the door body 200 is provided with a first peripheral edge portion 220 extending backwards to reduce the possibility of rainwater entering the recessed portion 111, and the edge of the opening 102 is provided with a second peripheral edge portion 112 extending forwards to reduce the possibility of rainwater entering the opening 102, thereby reducing the possibility of rainwater entering the opening 102 from the gap outside the door body 200, and improving the waterproof performance. In actual application, the specific structures of the first peripheral edge portion 220 and the second peripheral edge portion 112 can be set accordingly according to actual use needs.

[0048] In some embodiments, a drainage gap 202 is provided between the lower side wall of the recessed portion 111 and the first peripheral edge portion 220 at the lower side of the door body 200. It is understood that if Figure 6 As shown, there is a spacing distance between the lower side wall of the recessed portion 111 and the first peripheral edge portion 220 at the lower side of the door body 200 to form a drainage gap 202. Rainwater entering between the door body 200 and the face frame 110 can be discharged through the drainage gap 202 at the lower side thereof, thereby reducing the possibility of internal water accumulation. In actual application, the size of the drainage gap 202 can be set accordingly according to actual use needs.

[0049] In some embodiments, an air inlet 203 is provided at the lower portion of the door body 200 , and a baffle 120 is provided at the lower portion of the opening 102 corresponding to the air inlet 203 , and the upper edge of the baffle 120 is not lower than the position of the air inlet 203 on the door body 200 .

[0050] It is understandable that if Figure 2 , Figure 4 and Figure 6 As shown, the lower part of the door body 200 is provided with a plurality of air inlet holes 203, the lower side of the baffle 120 is connected to the face frame 110, which is located at the lower part of the opening 102 and is arranged corresponding to the position of the air inlet holes 203, and the upper edge of the baffle 120 is higher than the position of the air inlet holes 203 on the door body 200, thereby effectively blocking the rainwater entering at the air inlet holes 203 from entering the inner cavity 101 from the opening 102, thereby improving the waterproof performance. In actual application, the upper edge of the baffle 120 can also be level with the highest position of the air inlet holes 203 on the door body 200, and the specific structure of the baffle 120 can be set accordingly according to actual use needs.

[0051] Furthermore, the shell assembly 100 includes a face frame 110 , an opening 102 is provided in the face frame 110 , the door body 200 is rotatably connected to the face frame 110 , the lower part of the baffle 120 is connected to the face frame 110 , and the baffle 120 is inclined relative to the face frame 110 to guide the fluid to flow out from the lower side of the opening 102 .

[0052] It is understandable that if Figure 2 , Figure 4 and Figure 6 As shown, the baffle 120 is inclined relative to the face frame 110, so that the side of the baffle 120 facing the air inlet 203 forms a downward inclined wall. When the rainwater entering the air inlet 203 is blocked by the baffle 120, the inclined wall can quickly guide the water on the baffle 120 to the lower side of the opening 102 and flow out from the opening 102, and then drain out through the drainage gap 202 under the door body 200, thereby reducing the possibility of internal water accumulation. In actual application, the inclination angle of the baffle 120 can be set accordingly according to actual use needs.

[0053] The vehicle-mounted water heater according to the second aspect of the present utility model comprises the vehicle-mounted water heater waterproof structure according to the first aspect of the present utility model.

[0054] According to the vehicle-mounted water heater of the embodiment of the utility model, the vehicle-mounted water heater adopts the above-mentioned waterproof structure, which is beneficial to reduce the possibility of rainwater entering the interior of the housing assembly 100 and improve the waterproof performance.

[0055] Since other structures of the vehicle-mounted water heater of the embodiment of the utility model are known to ordinary technicians in the field, they are not described in detail here.

[0056] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A waterproof structure for a vehicle-mounted water heater, characterized in that: include: A shell assembly, wherein the shell assembly has an inner cavity, one side of the shell assembly is provided with an opening communicating with the inner cavity, an exhaust pipe is provided in the inner cavity, the exhaust pipe extends in a horizontal direction or an exhaust end of the exhaust pipe is inclined downward relative to an air inlet end; A door body is rotatably connected to the shell assembly and can cover the opening, a avoidance hole is arranged on the door body corresponding to the exhaust pipe, the exhaust pipe extends outward from the inner cavity through the opening and the exhaust end of the exhaust pipe can dock with the avoidance hole, a first blocking member is arranged in the exhaust pipe, the first blocking member has a first blocking portion, the first blocking portion is located at the lower part of the internal channel of the exhaust pipe and a first vent is arranged between the first blocking portion and the upper wall of the internal channel of the exhaust pipe.

2. The vehicle-mounted water heater waterproof structure according to claim 1, characterized in that: A second blocking member is also provided in the exhaust pipe. The second blocking member is spaced apart from the first blocking member. The second blocking member has a second blocking portion. The second blocking portion is located at the upper portion of the internal channel of the exhaust pipe and a second vent is provided between the second blocking portion and the lower wall of the internal channel of the exhaust pipe.

3. The vehicle-mounted water heater waterproof structure according to claim 2, characterized in that: The first blocking portion can block the second vent along the axial direction of the exhaust pipe and / or the second blocking portion can block the first vent along the axial direction of the exhaust pipe.

4. The vehicle-mounted water heater waterproof structure according to claim 1, characterized in that: The air outlet end of the exhaust pipe is provided with a partition net.

5. The vehicle-mounted water heater waterproof structure according to claim 1, characterized in that: The air outlet end of the exhaust pipe is inserted into the avoidance hole, and a flexible sleeve is provided between the hole wall of the avoidance hole and the outer wall of the air outlet end of the exhaust pipe.

6. The vehicle-mounted water heater waterproof structure according to claim 1, characterized in that: The shell assembly includes a face frame having a recessed portion, the opening being arranged in the recessed portion, the door body being rotatably connected to the face frame and being capable of rotating into the recessed portion, the edge of the door body being provided with a first surrounding edge portion extending toward the recessed portion, and the edge of the opening being provided with a second surrounding edge portion extending toward the door body.

7. The vehicle-mounted water heater waterproof structure according to claim 6, characterized in that: A drainage gap is provided between the lower side wall surface of the recessed portion and the first surrounding edge portion at the lower side of the door body.

8. The vehicle-mounted water heater waterproof structure according to claim 1, characterized in that: An air inlet hole is arranged at the lower part of the door body, and a baffle is arranged at the lower part of the opening corresponding to the air inlet hole, and the upper edge of the baffle is not lower than the position of the air inlet hole on the door body.

9. The vehicle-mounted water heater waterproof structure according to claim 8, characterized in that: The shell assembly includes a face frame, the opening is arranged on the face frame, the door body is rotatably connected to the face frame, the lower part of the baffle is connected to the face frame, and the baffle is inclined relative to the face frame to guide the fluid to flow out from the lower side of the opening.

10. A vehicle-mounted water heater, characterized in that: It comprises the waterproof structure of the vehicle-mounted water heater according to any one of claims 1 to 9.