UV sterilization lamp of water heater inner container

Abstract

The utility model discloses a UV sterilization lamp of a water heater inner container, which comprises a mounting seat, the mounting seat is connected with a sterilization lamp body arranged in the water heater inner container, and the sterilization lamp body is provided with a leakage-proof component for preventing water in the inner container from entering the lamp body. The leakage-proof assembly comprises a protective cover, a fixing ring, a first sealing groove, a first sealing ring and other structures, and multiple sealing between the sterilization lamp body and the mounting base is achieved. Water in the inner container is effectively prevented from entering the sterilization lamp body and leaking outwards, potential safety hazards such as short circuit and electric leakage caused by leakage are avoided, mechanical locking between the fixing ring and the outer shell is achieved by arranging the buckling part at the lower end of the outer shell body and arranging the corresponding buckling hole in the fixing ring, and the service life of the sterilization lamp is prolonged. And the sealing stability of the fixing ring is further enhanced. Generally speaking, the sealing performance of the UV sterilization lamp is improved by arranging multiple sealing structures, water in the inner container is prevented from entering the sterilization lamp and leaking outwards, and the reliability and the safety of the sterilization lamp are improved.

Description

Technical Field

[0002] The utility model relates to the technical field of water heater purification equipment, in particular to a UV sterilization lamp for a water heater inner tank.

Background Art

[0004] With the improvement of people's living standards, the use of household appliances is becoming more and more popular. Among them, as one of the common household appliances in the family, the water heater has a high usage frequency, and the cleaning and disinfection of the water heater inner tank have also become the focus of users' attention.

[0005] At present, the disinfection of the water heater inner tank mainly relies on methods such as high temperature, chemical agents or setting a UV sterilization lamp that can emit ultraviolet rays in the inner tank. Among them, the use of a UV sterilization lamp has the advantages of high efficiency, no residue, no secondary pollution, etc., and is widely used in the disinfection of the water heater inner tank. The existing UV sterilization lamps generally use a quartz lamp cover as the main waterproof structure. However, the quartz lamp cover is inevitably collided during transportation and assembly, resulting in cracks that are not easily found. After long-term use, the water in the inner tank may leak into the internal structure of the lamp body, causing safety hazards such as short circuit and electric leakage.

Content of the Utility Model

[0007] In order to solve the above problems, the utility model provides a UV sterilization lamp for a water heater inner tank, aiming to improve the sealing reliability of the sterilization lamp through a multi-layer sealing structure. Even if a certain sealing unit fails, the water in the inner tank will not enter the internal structure of the lamp body and further leak out to cause damage to the sterilization lamp, thereby improving the reliability and safety of the sterilization lamp.

[0008] The utility model is realized by the following technical solutions:

[0009] A UV sterilization lamp for a water heater inner tank includes a mounting base, the mounting base is connected with a sterilization lamp body, and the sterilization lamp body is provided with a leak-proof component for preventing the water in the inner tank from entering the lamp body.

[0010] The UV sterilization lamp for a water heater inner tank as described above, the sterilization lamp body includes a housing, one end of the housing is connected with a lamp board, the lamp board is assembled with lamp beads that can emit sterilizing light, the lamp board is electrically connected with a lamp lead wire that penetrates through the housing and is used to supply power to the lamp beads, and the leak-proof component covering the lamp board is provided on the housing.

[0011] The UV sterilization lamp for a water heater inner tank as described above, the leak-proof component includes a protective cover with a light-transmitting and waterproof effect that is sleeved on one end of the housing to cover the lamp board, a fixing ring for assembling and fixing it with the housing is sleeved on the outer periphery of the protective cover, and the fixing ring is sleeved on the outer periphery of one end of the housing and fixedly connected with it.

[0012] A UV sterilization lamp for a water heater inner tank as described above, wherein the outer shell includes an interface end connected to the mounting base, the interface end is connected to an outer shell body that houses the lamp leads, the outer shell body is connected to a leak-proof end sleeved with the protective cover, and the lamp board is provided at the bottom of the leak-proof end.

[0013] A UV sterilization lamp for a water heater inner tank as described above, a plurality of first sealing grooves are provided around the leak-proof end, and corresponding first sealing rings that closely fit the inner wall of the protective cover are provided on the first sealing grooves.

[0014] A UV sterilization lamp for a water heater inner tank as described above, a second sealing groove is provided at the bottom of the leak-proof end for accommodating a sealant bonded to the lamp board.

[0015] A UV sterilization lamp for a water heater inner tank as described above, a second sealing ring is sleeved closely to the interface end to prevent external water from leaking from the mounting base.

[0016] A UV sterilization lamp for a water heater inner tank as described above, the fixing ring is sleeved on the lower part of the outer shell body, a plurality of snap portions locked with the fixing ring are evenly provided around the lower end of the outer shell body, and the fixing ring is provided with snap holes corresponding to the snap portions.

[0017] A UV sterilization lamp for a water heater inner tank as described above, guiding notches corresponding to facilitating the precise engagement of the snap portions and the snap holes are provided at the upper end of the fixing ring.

[0018] A UV sterilization lamp for a water heater inner tank as described above, a pressure relief pipe that can balance the air pressure between the inner cavity of the protective cover and the outside to facilitate assembly is provided in the outer shell body, a pressure relief hole communicating with the pressure relief pipe is opened on the side wall of the leak-proof end, a third sealing ring is embedded at the pipe hole of the pressure relief pipe, and a sealing screw that can cooperate with the third sealing ring to make the inner cavity of the protective cover communicate with or be closed to the outside air is also provided at the pipe hole of the pressure relief pipe.

[0019] Compared with the prior art, the present utility model has the following advantages:

[0020] 1. By providing a leak-proof component, including structures such as a protective cover, a fixing ring, a first sealing groove, and a first sealing ring, multiple seals between the sterilization lamp body and the mounting base are achieved. With the combined action of these structures, even if a certain sealing unit fails, the water in the inner tank will not enter the internal structure of the lamp body and further leak out to cause damage to the sterilization lamp.

[0021] 2. By providing snap portions at the lower end of the outer shell body and corresponding snap holes on the fixing ring, mechanical locking between the fixing ring and the outer shell is achieved, further enhancing the sealing stability of the fixing ring and improving the convenience of the assembly process.

[0022] 3. By providing a pressure relief pipeline inside the housing body and opening a pressure relief hole on the side wall of the leak-proof end, the balance of air pressure between the inner cavity of the protective cover and the outside is achieved, facilitating assembly and solving the problem of difficult assembly of similar products. At the same time, a third sealing ring and a sealing screw are provided at the pipe hole of the pressure relief pipeline, realizing the sealing and control of the pressure relief pipeline, forming a primary seal and facilitating maintenance.

Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below.

[0025] Figure 1 It is a three-dimensional structure schematic diagram of this embodiment;

[0026] Figure 2 It is a three-dimensional exploded structure schematic diagram of this embodiment;

[0027] Figure 3 It is a partial exploded structure schematic diagram of this embodiment;

[0028] Figure 4 It is a side view schematic diagram of this embodiment;

[0029] Figure 5 For Figure 4 It is a cross-sectional structure schematic diagram along A-A in

[0030] Figure 6 It is a top view schematic diagram of this embodiment;

[0031] Figure 7 It is a schematic diagram of the internal structure of the germicidal lamp body in this embodiment;

[0032] Figure 8 It is a three-dimensional structure schematic diagram of the fixing ring in this embodiment.

Detailed Embodiment

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by this application clearer, the following further details this application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0035] This embodiment provides a UV germicidal lamp for a water heater inner tank, aiming to improve the sealing performance of the germicidal lamp, prevent water in the inner tank from entering the inside of the germicidal lamp and leaking out, thereby improving the reliability and safety of the germicidal lamp. It includes a mounting base 1, the mounting base 1 is connected with a germicidal lamp body 2, and a leak-proof component 3 for preventing water in the inner tank from entering the lamp body is provided on the germicidal lamp body 2.

[0036] In this embodiment, the sterilizing lamp body 2 is connected to the water heater inner tank through the mounting base 1 and placed therein. The sterilizing lamp body 2 can emit ultraviolet rays to achieve the effect of disinfecting and sterilizing the water in the water heater inner tank.

[0037] To protect the sterilizing lamp body 2 from the intrusion of water in the inner tank, a leak-proof component 3 is also provided in this embodiment. The leak-proof component 3 can include, but is not limited to, a sealing ring, a gasket or a waterproof coating, etc., for forming a sealing structure between the sterilizing lamp body 2 and the mounting base 1 or the water heater inner tank. By setting the leak-proof component 3, it can effectively prevent the water in the inner tank from seeping into the interior of the sterilizing lamp body 2 and leaking out, avoiding potential safety hazards such as short circuits and electric leakage caused by leakage.

[0038] Furthermore, as a preferred implementation manner of this solution rather than a limitation, the sterilizing lamp body 2 includes a housing 21. One end of the housing 21 is connected to a lamp board 22. Lamp beads 23 capable of emitting sterilizing light are assembled on the lamp board 22. The lamp board 22 is electrically connected to a lamp lead 24 passing through the housing 21 for supplying power to the lamp beads 23. The leak-proof component 3 covering the lamp board 22 is provided on the housing 21.

[0039] In this embodiment, the lamp board 22 is fixed at the lower end of the housing 21, and lamp beads 23 capable of emitting sterilizing light are assembled thereon. The lamp beads 23 can be ultraviolet LED lamp beads or other light sources capable of generating sterilizing light, which can generate ultraviolet rays of a specific wavelength to achieve the effect of disinfection and sterilization. The lamp lead 24 passes through the interior of the housing 21 and is electrically connected to the lamp board 22 to deliver power to the lamp beads 23.

[0040] In addition, to further prevent the water in the inner tank from entering the interior of the sterilizing lamp body 2, a leak-proof component 3 covering the lamp board 22 is also provided on the housing 21 in this embodiment. The leak-proof component 3 can include a sealing cover or a gasket for forming a sealing structure between the housing 21 and the lamp board 22, avoiding water entering the interior of the sterilizing lamp body 2 and coming into contact with the lamp board 22 and the lamp beads 23, thus avoiding the risk of short circuits or damage.

[0041] Furthermore, as a preferred implementation manner of this solution rather than a limitation, the leak-proof component 3 includes a protective cover 31 with a light-transmitting and waterproof effect sleeved on one end of the housing 21 for covering the lamp board 22. A fixing ring 32 for assembling and fixing it to the housing 21 is sleeved on the outer periphery of the protective cover 31. The fixing ring 32 is sleeved on the outer periphery of one end of the housing 21 and fixedly connected thereto.

[0042] In this embodiment, the protective cover 31 is designed to be sleeved at one end of the outer shell 21 for completely covering the lamp board 22. The protective cover 31 is made of a material with light-transmitting and waterproof effects, such as transparent silica gel, plastic, quartz glass, etc. This embodiment preferably uses a quartz cover to ensure that the sterilization light can effectively penetrate the protective cover 31 while preventing external water from entering the sterilization lamp body 2.

[0043] To achieve a firm assembly of the protective cover 31 and the outer shell 21, a fixing ring 32 is sleeved on the outer periphery of the protective cover 31. The fixing ring 32 can be connected to the protective cover 31 by interference fit, snap structure, snap connection or other suitable means to ensure that the protective cover 31 will not loosen or fall off during use, causing water in the water heater inner tank to seep into the sterilization lamp. The combined use of the protective cover 31 and the fixing ring 32 forms a complete waterproof barrier outside the sterilization lamp body 2, effectively preventing the seepage of water in the inner tank and improving the reliability and safety of the sterilization lamp.

[0044] Further, as a preferred implementation manner rather than a limitation of this solution, the outer shell 21 includes an interface end 211 connected to the mounting seat 1. The interface end 211 is connected to an outer shell main body 212 that houses the lamp lead 24. The outer shell main body 212 is connected to a leak-proof end 213 sleeved with the protective cover 31, and the lamp board 22 is provided at the bottom of the leak-proof end 213.

[0045] In this embodiment, the interface end 211 is the part where the outer shell 21 is connected to the mounting seat 1 for fixing the sterilization lamp in the water heater inner tank. The connection method between the interface end 211 and the mounting seat 1 includes but is not limited to screw connection, snap connection, bonding, interference fit and other methods for fixation.

[0046] The outer shell main body 212 is the part connected after the interface end 211 for housing the lamp lead 24. The lamp lead 24 is connected to the lamp board 22 through a channel or hole inside the outer shell main body 212 to supply power to the lamp beads 23. The leak-proof end 213 is the end part of the outer shell 21, which is sleeved with the protective cover 31 to achieve reliable protection for the lamp board 22 and the lamp beads 23. The lamp board 22 is provided at the bottom of the leak-proof end 213, and the lamp beads 23 capable of emitting sterilization light are assembled on the lamp board 22. The light-transmitting and waterproof effect of the protective cover 31 is combined with the sealing structure of the leak-proof end 213, effectively preventing water from entering the sterilization lamp internally and improving the reliability and safety of the sterilization lamp.

[0047] Further, as a preferred implementation manner rather than a limitation of this solution, a plurality of first sealing grooves 4 are provided around the leak-proof end 213, and corresponding first sealing rings 41 that are closely attached to the inner wall of the protective cover 31 are provided on the first sealing grooves 4.

[0048] In this embodiment, the first sealing groove 4 is arranged around the leak-proof end 213, and its depth and width are matched with the first sealing ring 41 as required to ensure that the first sealing ring 41 can be firmly fixed in the groove. The first sealing ring 41 can be made of rubber, silica gel or other materials with good elasticity and sealing performance, and its cross-sectional shape can be O-shaped, V-shaped or rectangular, etc.

[0049] More specifically, in this embodiment, there are three first sealing grooves 4. In some other embodiments, it can also be set to two, four, five, etc. according to the waterproof level requirements. The number of first sealing rings 41 can be equivalent to the number of sealing grooves. When the waterproof level requirement is not strict, it can also be less than the number of sealing grooves, but at least one is set. In this embodiment, two first sealing rings are set. When the protective cover 31 is sleeved on the leak-proof end 213, the outer sides of the multiple first sealing rings 41 are closely attached to the inner wall of the protective cover 31, forming a continuous multi-layer sealing barrier. In this way, even if a small amount of water or moisture enters the inside of the sterilizing lamp body 2, it will be effectively blocked by the first sealing ring 41, thus avoiding damage to electrical components such as the lamp board 22 and lamp beads 23.

[0050] Furthermore, as a preferred implementation manner of this solution rather than a limitation, a second sealing groove 5 is provided at the bottom of the leak-proof end 213 for accommodating the sealant bonded to the lamp board 22.

[0051] In this embodiment, in order to further improve the sealing performance between the leak-proof end 213 and the lamp board 22, a second sealing groove 5 is provided at the bottom of the leak-proof end 213.

[0052] Specifically, the second sealing groove 5 is located at the bottom of the leak-proof end 213 and is filled with a sealant made of silica gel, epoxy resin or other materials with good adhesiveness and sealing performance. During the assembly of the sterilizing lamp, the lamp board 22 is placed at the bottom of the leak-proof end 213 and aligned with the second sealing groove 5, and it is ensured that it is closely attached to the leak-proof end 213. After the sealant cures, it will form a continuous sealing barrier, firmly bonding the lamp board 22 and the leak-proof end 213 together and effectively preventing the infiltration of water or moisture. Even if the protective cover 31 is broken, water still cannot flow into the outer shell of the sterilizing lamp through the part where the lamp lead passes through the leak-proof end at the bottom of the lamp board and further leak outwards.

[0053] Furthermore, as a preferred implementation manner of this solution rather than a limitation, a second sealing ring 6 is sleeved tightly on the interface end 211 to prevent external water from leaking from the mounting base 1.

[0054] In this embodiment, in order to further improve the sealing performance between the sterilizing lamp and the mounting base 1 and prevent water in the water heater inner tank from leaking from the mounting base 1, a second sealing ring 6 is provided on the interface end 211.

[0055] Specifically, the second sealing ring 6 is sleeved on the interface end 211. Its cross-sectional shape can be O-shaped, V-shaped, rectangular, etc., and the material is selected as a suitable elastic material according to needs, such as rubber, silica gel, etc. The size of the second sealing ring 6 matches the interface end 211 to ensure that it can fit tightly on the interface end 211.

[0056] When the sterilization lamp is fixed in the water heater inner tank through the mounting base 1, the outer side of the second sealing ring 6 fits tightly against the inner wall of the mounting base 1, forming a continuous sealing barrier. In this way, even if a small amount of water or moisture seeps in from the connection between the mounting base 1 and the water heater inner tank, it will be effectively blocked by the second sealing ring 6, thus avoiding damage to the internal circuit and electronic components of the sterilization lamp. On the other hand, it also prevents the water in the inner tank from leaking from the mounting base 1 to the external environment.

[0057] Further, as a preferred implementation manner of this solution rather than a limitation, the fixing ring 32 is sleeved on the lower part of the housing main body 212. A plurality of buckle portions 7 locked with the fixing ring 32 are evenly provided at the lower end of the housing main body 212, and the fixing ring 32 is provided with buckle holes 71 corresponding to the buckle portions 7.

[0058] In this embodiment, in order to achieve a firm connection between the fixing ring 32 and the housing main body 212 to further enhance the sealing stability of the protective cover 31, a plurality of buckle portions 7 are evenly arranged at the lower end of the housing main body 212, and a corresponding number of buckle holes 71 are provided on the fixing ring 32.

[0059] Specifically, the buckle portions 7 are evenly arranged around the lower end of the housing main body 212, and their quantity and positions are designed according to needs to ensure that the fixing ring 32 can be firmly locked on the housing main body 212. The buckle portions 7 are usually protruding buckle protrusions or concave buckle grooves, and their shapes and sizes should match the buckle holes 71 on the fixing ring 32.

[0060] The buckle holes 71 on the fixing ring 32 correspond to the buckle portions 7, and their shapes and sizes should also match the buckle portions 7. When the fixing ring 32 is sleeved on the housing main body 212, the buckle holes 71 and the buckle portions 7 cooperate with each other to achieve mechanical locking between the fixing ring 32 and the housing main body 212, so as to further enhance the sealing stability of the protective cover 31.

[0061] Further, as a preferred implementation manner of this solution rather than a limitation, a guiding notch 8 corresponding to facilitating the precise clamping of the buckle portion 7 and the buckle hole 71 is provided at the upper end of the fixing ring 32.

[0062] In this embodiment, in order to further improve the precise clamping between the buckle portion 7 and the buckle hole 71, a guiding notch 8 is provided at the upper end of the fixing ring 32.

[0063] Specifically, the guiding notch 8 is located at the upper end of the fixed ring 32, and its shape and size are based on the snap portion 7. The guiding notch 8 can be a V-shaped or U-shaped notch, or a notch with inclined surfaces. Its depth and width are slightly larger than the thickness of the snap portion 7 to provide sufficient space for guiding and positioning.

[0064] When the fixed ring 32 is sleeved on the outer shell main body 212, the guiding notch 8 corresponds to the snap portion 7 and functions to guide and position. Through the guidance of the guiding notch 8, the snap hole 71 can be more accurately aligned with the snap portion 7, thereby achieving a more precise snap connection and improving the installation efficiency and accuracy during the production and assembly process.

[0065] Furthermore, as a preferred implementation manner of this solution rather than a limitation, a pressure relief pipe 9 is provided inside the outer shell main body 212 to balance the air pressure between the inner cavity of the protective cover 31 and the outside for easy assembly. A pressure relief hole 91 communicating with the pressure relief pipe 9 is provided on the side wall of the leak-proof end 213. A third sealing ring 92 is embedded in the pipe hole of the pressure relief pipe 9, and a sealing screw 93 is also provided at the pipe hole of the pressure relief pipe 9 to cooperate with the third sealing ring 92 to enable the air in the inner cavity of the protective cover 31 to communicate with or be closed off from the outside air.

[0066] In this embodiment, to facilitate the assembly of the protective cover 31, a pressure relief pipe 9 is provided inside the outer shell main body 212, and a pressure relief hole 91 is provided on the side wall of the leak-proof end 213. At the same time, to achieve the sealing and control of the pressure relief pipe 9, a third sealing ring 92 and a sealing screw 93 are provided at the pipe hole of the pressure relief pipe 9.

[0067] Specifically, the pressure relief pipe 9 is located inside the outer shell main body 212. One end of it communicates with the inner cavity of the protective cover 31 through the pressure relief hole 91, and the other end communicates with the outside. The setting of the pressure relief pipe 9 forms a communicating channel between the inner cavity of the protective cover 31 and the outside, facilitating the balancing of the air pressure between the inner cavity of the protective cover 31 and the outside during the assembly process and avoiding air compression inside the protective cover 31, which may cause assembly difficulties.

[0068] The third sealing ring 92 is embedded in the pipe hole of the pressure relief pipe 9 and provides sealing performance through close cooperation with the sealing screw 93. On the one hand, it prevents water or moisture from entering the inside of the sterilization lamp through the pressure relief pipe 9. On the other hand, if the protective cover 31 is broken, it ensures that even if the lamp cover is broken, the water in the inner tank still cannot leak out to the outside through the pressure relief pipe 9, achieving double leak prevention.

[0069] This embodiment provides a UV sterilization lamp for a water heater inner tank, aiming to solve the problem of insufficient sealing performance of the sterilization lamp in the prior art. Its working principle is as follows:

[0070] The sterilizing lamp body is connected to the water heater inner tank through a mounting base and placed therein. A second sealing ring is used to seal between the mounting base and the sterilizing lamp body to prevent water in the water heater inner tank from leaking through the mounting base.

[0071] The sterilizing lamp body can emit ultraviolet rays to achieve the effect of disinfecting and sterilizing the water heater inner tank. The sterilizing lamp body includes a housing, one end of the housing is connected with a lamp board, and lamp beads capable of emitting sterilizing light are assembled on the lamp board. The lamp beads can be ultraviolet LED lamp beads or other light sources capable of generating sterilizing light, which can generate ultraviolet rays with a specific wavelength to achieve the effect of disinfection and sterilization.

[0072] To protect the sterilizing lamp body from the intrusion of water in the inner tank, a leak-proof component is provided in this embodiment. The leak-proof component includes a protective cover sleeved on one end of the housing for covering the lamp board. The protective cover has a light-transmitting and waterproof effect and can be made of materials such as transparent silicone, plastic, or quartz glass. A fixing ring is sleeved on the outer periphery of the protective cover, and the fixing ring is fixedly connected to the housing to ensure that the protective cover will not loosen or fall off.

[0073] A plurality of first sealing grooves are provided on the leak-proof end, and corresponding first sealing rings are provided on each first sealing groove to achieve multiple seals. When the protective cover is sleeved on the leak-proof end, the outer sides of the plurality of first sealing rings are closely attached to the inner wall of the protective cover to form a continuous multiple-seal barrier. In addition, a second sealing groove is provided at the bottom of the leak-proof end for accommodating a sealant bonded to the lamp board to further improve the sealing performance.

[0074] The fixing ring and the housing are locked through a buckle part and a buckle hole. The buckle part is evenly arranged around the lower end of the housing body, and buckle holes corresponding to the buckle part are provided on the fixing ring. When the fixing ring is sleeved on the housing body, the buckle holes and the buckle part cooperate with each other to achieve mechanical locking between the fixing ring and the housing.

[0075] To improve the precise engagement between the buckle part and the buckle hole, a guiding notch is provided at the upper end of the fixing ring. The guiding notch plays a role of guiding and positioning, enabling the buckle hole to be more accurately aligned with the buckle part.

[0076] A pressure relief pipeline is provided inside the housing body to balance the air pressure between the inner cavity of the protective cover and the outside, facilitating assembly. A third sealing ring is embedded in the pipe hole of the pressure relief pipeline, and a sealing screw is provided to achieve the sealing and control of the pressure relief pipeline. This can prevent water or moisture from entering the sterilizing lamp through the pressure relief pipeline, and at the same time ensure that even if the protective cover is broken, the water in the inner tank cannot leak out through the pressure relief pipeline.

[0077] The above are the implementation manners provided in combination with specific contents, and it is not determined that the specific implementation of this application is only limited to these descriptions. Any method structure similar to that of this application, or several technical deductions or substitutions made under the premise of the concept of this application, should be regarded as the protection scope of this application.

Claims

1. A UV sterilizing lamp for a water heater tank, comprising a mounting base (1), characterized in that: The mounting seat (1) is connected to a germicidal lamp body (2), and the germicidal lamp body (2) is provided with a leak-proof component (3) for preventing water in the inner tank from entering the lamp body; The sterilization lamp body (2) comprises a housing (21), one end of the housing (21) being connected to a lamp board (22), the lamp board (22) being equipped with lamp beads (23) capable of emitting sterilization light, the lamp board (22) being electrically connected to lamp leads (24) passing through the housing (21) for supplying power to the lamp beads (23), and the housing (21) being provided with the leak-proof component (3) covering the lamp board (22); The anti-leakage component (3) comprises a light-transmitting and waterproof protective cover (31) sleeved on one end of the housing (21) and used to cover the light panel (22); a fixing ring (32) sleeved on the outer circumference of the protective cover (31) for fixing the protective cover to the housing (21); and the fixing ring (32) sleeved on the outer circumference of one end of the housing (21) and fixedly connected thereto.

2. A UV sterilizing lamp for a water heater tank according to claim 1, characterized in that: The housing (21) comprises an interface end (211) connected to the mounting seat (1), the interface end (211) being connected to a housing body (212) accommodating the lamp lead (24), the housing body (212) being connected to a leak-proof end (213) sleeved with the protective cover (31), the lamp panel (22) being provided at the bottom of the leak-proof end (213).

3. A UV sterilizing lamp for a water heater tank according to claim 2, characterized in that: A plurality of first sealing grooves (4) are provided around the leak-proof end (213), and the first sealing grooves (4) are provided with corresponding first sealing rings (41) that are tightly fitted with the inner wall of the protective cover (31).

4. The UV sterilizing lamp for the inner tank of a water heater according to claim 2, characterized in that: A second sealing groove (5) is provided at the bottom of the leak-proof end (213) for accommodating a sealant bonded to the light panel (22).

5. The UV sterilizing lamp for the inner tank of a water heater according to claim 2, characterized in that: A second sealing ring (6) is provided in close contact with the interface end (211) to prevent external water from leaking from the mounting seat (1).

6. The UV sterilizing lamp for the inner tank of a water heater according to claim 2, characterized in that: The fixing ring (32) is sleeved on the lower part of the shell body (212), and a plurality of buckle parts (7) that are locked with the fixing ring (32) are evenly arranged at the lower end of the shell body (212), and the fixing ring (32) is provided with buckle holes (71) corresponding to the buckle parts (7).

7. A UV sterilizing lamp for a water heater tank according to claim 6, characterized in that: The upper end of the fixing ring (32) is provided with a corresponding guide notch (8) which facilitates the accurate snap connection between the snap portion (7) and the snap hole (71).

8. The UV sterilizing lamp for the inner tank of a water heater according to claim 2, characterized in that: A pressure relief pipe (9) is provided in the shell body (212) so as to balance the pressure of the inner cavity of the protective cover (31) with that of the outside air for easy assembly; a pressure relief hole (91) is provided on the side wall of the leak-proof end (213) so as to communicate with the pressure relief pipe (9); a third sealing ring (92) is embedded in the pipe hole of the pressure relief pipe (9); a sealing screw (93) is also provided in the pipe hole of the pressure relief pipe (9) so as to cooperate with the third sealing ring (92) to allow the inner cavity of the protective cover (31) to circulate or seal with the outside air.

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