Power panel mounting structure and electric water heater

Abstract

The utility model relates to a power panel mounting structure and an electric water heater, and belongs to the technical field of electric appliances. The power panel mounting structure comprises a shell, a fixing assembly and a limiting assembly, and the shell comprises a first mounting plate and a second mounting plate located on the side of the first mounting plate. The limiting assembly is arranged on the first mounting plate, and the limiting assembly is provided with a slot for the power supply plate to insert. The fixing assembly is installed on the second installation plate, and when the power panel is inserted into the insertion groove, the power panel is fixed through the fixing assembly. By arranging the fixing assembly, the power panel is fixed, screw-free fixation of the power panel is achieved, the problem that the power panel is disengaged due to screw disengagement is avoided, and the safety of the product is improved.

Description

Technical Field

[0001] The present application belongs to the field of electrical appliance technology, and specifically relates to a power board installation structure and an electric water heater. Background Art

[0002] There are many types of water heaters, among which electric water heaters, gas water heaters and solar water heaters are the three major mainstream water heaters.

[0003] The power board in the existing electric water heater is installed in the electrical room or the end cover, wherein a plurality of limit grooves are provided in the electrical room or the end cover, and each surface of the power board is installed in the corresponding limit groove, and the top is fixed with screws to prevent the power board from falling out, thereby achieving fixation.

[0004] However, in the above solution, since the power board is fixed by screws after being installed in the limiting groove, the fixing method is not firm enough and may fall out during transportation. Utility Model Content

[0005] The present application provides a power board installation structure to solve the problem in the prior art that after the power board is installed in the limit slot, it is fixed by screws, but the fixing method is not firm enough and may fall out during transportation.

[0006] In a first aspect, the present application provides a power board mounting structure, including a shell, a fixing assembly and a limiting assembly, wherein the shell includes a first mounting plate perpendicular to each other and a second mounting plate located on the side of the first mounting plate.

[0007] The limiting component is arranged on the first mounting plate, and the limiting component has a slot for the power board to be inserted.

[0008] The fixing component is installed on the second mounting plate, and when the power board is plugged into the slot, the power board is fixed by the fixing component.

[0009] In an embodiment of the present utility model, the fixing assembly includes a first fixing block and a second fixing block, and the first fixing block includes an abutting portion and a fixing portion.

[0010] The second fixing block is arranged on the second mounting plate. When the power board is installed on the limiting assembly, the fixing portion is engaged with the second fixing block, and the abutting portion is abutted with the power board to fix the power board inserted into the slot between the abutting portion and the slot.

[0011] In an embodiment of the utility model, the slot includes two first limit slots, the limit assembly includes two relatively arranged limit columns, the two limit columns are arranged on the first mounting plate, the two first limit slots are respectively arranged on the two limit columns, and the two ends of the power board are respectively plugged into the two first limit slots.

[0012] In an embodiment of the present utility model, the slot further includes at least two second limiting grooves, each of which is sequentially arranged on the first mounting plate, and the bottom of the power board is snapped into each of the second limiting grooves.

[0013] In an embodiment of the present utility model, a first clamping groove is provided on the side wall of the abutting portion facing the first mounting plate, and the top of the power board is clamped into the first clamping groove.

[0014] The second fixing block is provided with a buckle, the side wall of the fixing portion facing the second fixing block is provided with a second buckle groove, the upper groove wall of the second buckle groove is provided with a buckle hole, and when part of the second fixing block is inserted into the second buckle groove, the buckle is snapped into the buckle hole to fix the first fixing block on the second fixing block.

[0015] In an embodiment of the utility model, the second fixing block is provided with an avoidance hole, and the lower groove wall of the second clamping groove is inserted into the avoidance hole.

[0016] In an embodiment of the utility model, the avoidance hole and the lower groove wall of the second clamping groove are both in the shape of a trapezoid.

[0017] In an embodiment of the utility model, a limit block is further provided on the second mounting plate, and the limit block is used to abut against the power board.

[0018] In an embodiment of the present utility model, the widths of the first limiting groove, the second limiting groove and the first clamping groove are all equal to the thickness of the power board.

[0019] In an embodiment of the present utility model, the length of the first limiting groove is equal to the width of the power board.

[0020] In a second aspect, an electric water heater is further provided, wherein a power board mounting structure as described in the first aspect is arranged on a shell of the electric water heater.

[0021] In an embodiment of the utility model: a power board mounting structure is proposed, including a shell, a fixing component and a limiting component, the shell includes a first mounting plate perpendicular to each other and a second mounting plate located on the side of the first mounting plate. The limiting component is arranged on the first mounting plate, and the limiting component has a slot for inserting the power board. The fixing component is installed on the second mounting plate, and when the power board is plugged into the slot, the power board is fixed by the fixing component. The fixing of the power board is achieved by setting the fixing component, and the screw-free fixing of the power board is achieved, which avoids the problem of the power board falling out due to the falling of the screws, thereby improving the safety of the product. In addition, the limiting component arranged on the power board can also prevent water vapor from corroding the power board, effectively improving the sealing of the power board, and further improving the safety of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 This is a schematic diagram of the structure of the power board installation structure proposed by the utility model;

[0024] Figure 2 for Figure 1 The schematic diagram of the structure after removing the power board;

[0025] Figure 3 for Figure 2 A schematic diagram of the structure after removing the first fixing block;

[0026] Figure 4 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0028] Figure 6 This is a structural schematic diagram of the first fixing block in the power board installation structure proposed by the utility model;

[0029] Figure 7 for Figure 6 A schematic structural diagram of the first fixed block at another angle;

[0030] Figure 8 This is a structural schematic diagram of the second fixing block in the power board installation structure proposed by the utility model;

[0031] Fig. 9 This is a structural schematic diagram of the unlocking component in the power board installation structure proposed by the utility model;

[0032] Fig.10This is a schematic diagram of the position of the power board installation structure proposed by the utility model before it is moved;

[0033] Fig.11 This is a schematic diagram of the structure of the power board installation structure proposed by the utility model after being moved;

[0034] Fig.12 This is a structural schematic diagram of a sliding component in the power board installation structure proposed by the utility model.

[0035] Reference numerals:

[0036] 100 - housing; 110 - first mounting plate; 120 - second mounting plate;

[0037] 200-fixing assembly; 210-first fixing block; 211-abutting portion; 212-fixing portion; 220-second fixing block; 221-buckle; 222-avoidance hole; 230-first clamping groove; 240-second clamping groove; 250-buckle hole;

[0038] 300-limiting assembly; 310-slot; 311-first limiting slot; 312-second limiting slot; 320-limiting column;

[0039] 400-power board;

[0040] 500-limit block;

[0041] 600-unlocking assembly; 610-mounting column; 620-first slide slot; 630-spring; 640-first slider; 650-second slider;

[0042] 700 - sliding assembly; 710 - third sliding block; 720 - second sliding groove.

[0043] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here, for example.

[0046] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0047] In the description of the embodiments of the present application, it should be understood that the terms "inside", "outside", "top", "bottom", "front", "back", etc. indicating the orientation or position relationship (if any) are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application.

[0048] The power board in the existing electric water heater is installed in the electrical room or the end cover, wherein a plurality of limit grooves are provided in the electrical room or the end cover, and each surface of the power board is installed in the corresponding limit groove, and the top is fixed with screws to prevent the power board from falling out, thereby achieving fixation.

[0049] The solution in the prior art requires that the power board be installed in the limit slot and then fixed by screws. The fixing method is not reliable enough and may fall out during transportation. In addition, the screws need to be screwed into the screw holes by the staff. When a large number of power boards need to be installed on the production line, the number of people employed and the labor cost are greatly increased.

[0050] The utility model proposes a screwless power board fixing structure, which fixes the power board by setting a fixing component that is easy to install. It is not only quick and convenient to install, but also not easy to fall off during transportation. The utility model will be described in detail in conjunction with the accompanying drawings below.

[0051] Figure 1 This is a schematic diagram of the structure of the power board installation structure proposed by the utility model; Figure 2 for Figure 1 The schematic diagram of the structure after removing the power board; Figure 3 for Figure 2 A schematic diagram of the structure after removing the first fixing block; Figure 4 for Figure 2 The enlarged view of point A in the middle; Figure 5 for Figure 3 The enlarged view of point B in the middle; Figure 6 This is a structural schematic diagram of the first fixing block in the power board installation structure proposed by the utility model; Figure 7 for Figure 6 A schematic structural diagram of the first fixed block at another angle; Figure 8 This is a structural schematic diagram of the second fixing block in the power board installation structure proposed by the utility model; Fig. 9 This is a structural schematic diagram of the unlocking component in the power board installation structure proposed by the utility model; Fig.10 This is a schematic diagram of the position of the power board installation structure proposed by the utility model before it is moved; Fig.11 This is a schematic diagram of the structure of the power board installation structure proposed by the utility model after being moved; Fig.12 This is a structural schematic diagram of a sliding component in the power board installation structure proposed by the utility model.

[0052] Combination Figures 1 to 5 As shown, a power board 400 installation structure provided in the present application includes a shell 100, a fixing component 200 and a limiting component 300, the shell 100 includes a first mounting plate 110 and a second mounting plate 120 which are perpendicular to each other, and the second mounting plate 120 is located on the side of the first mounting plate 110.

[0053] The limiting assembly 300 is disposed on the first mounting plate 110, and the limiting assembly 300 has a slot 310 for inserting the power board 400. The power board 400 is connected to the limiting assembly 300, and the limiting assembly 300 is used to limit the movement of the power board 400 so that the power board 400 moves along a path perpendicular to the second power board 400.

[0054] The fixing assembly 200 is mounted on the second mounting plate 120 . When the power board 400 is plugged into the slot 310 , the power board 400 is fixed by the fixing assembly 200 .

[0055] The fixing assembly 200 includes a first fixing block 210 and a second fixing block 220 . The first fixing block 210 includes an abutting portion 211 and a fixing portion 212 .

[0056] The second fixing block 220 is arranged on the second mounting plate 120. When the power board 400 is installed on the limiting assembly 300, the fixing portion 212 and the second fixing block 220 are detachably connected and snap-fitted, and the abutting portion 211 abuts against the power board 400 to fix the power board 400 inserted into the slot 310 between the abutting portion 211 and the slot 310 to fix the power board 400.

[0057] The fixing assembly 200 is provided to fix the power board 400, thereby avoiding the problem of the power board 400 falling out due to the screw falling off, thereby improving the safety of the product. In addition, the slot 310 structure of the fixing assembly 200 further improves the stability of the installation of the power board 400.

[0058] The abutting portion 211 and the fixing portion 212 in the first fixing block 210 may be connected by welding or may be an integrally formed part. In the drawings of this embodiment, an integrally formed part is used.

[0059] The power board 400 in this embodiment can be arranged in the electrical room or the shell cover of the electric water heater, that is, the first mounting plate 110 and the second mounting plate 120 can be either the electrical room shell or the shell cover.

[0060] The slot 310 is mainly used to limit the three surfaces of the two ends and the bottom of the power board 400, so that the power board 400 can be inserted into the slot 310 by insertion when it needs to be installed, and the slot 310 can be used to achieve horizontal limitation.

[0061] For example, the height of the slot 310 may be increased so that most of the power boards 400 can be inserted into the slot 310 to prevent moisture from corroding the power boards 400 .

[0062] like Figure 4 As shown, in an embodiment of the utility model, the slot 310 includes two oppositely arranged first limit slots 311, the limit assembly 300 includes two oppositely arranged limit columns 320, the two limit columns 320 are vertically arranged on the first mounting plate 110, and the two first limit slots 311 are respectively correspondingly arranged on the two limit columns 320, and the first limit slots 311 are arranged on the opposite side walls of the two limit columns 320, so that the edges at both ends of the power board 400 are correspondingly snapped into the two first limit slots 311.

[0063] The bottoms of the two limiting posts 320 are welded to the first mounting plate 110, and the distance between the two limiting posts 320 is equal to the length of the power board 400 to ensure the stable installation of the power board 400. The limiting posts 320 are cylindrical and are vertically fixed to the top of the first mounting plate 110.

[0064] In the above technical solution, the depth of the first limiting groove 311 is 1-2 cm.

[0065] In an embodiment of the utility model, the slot 310 of the limiting assembly 300 also includes at least two second limiting slots 312 , and the multiple second limiting slots 312 are sequentially arranged on the first mounting plate 110 , and the edge of the bottom of the power board 400 is inserted into the multiple second limiting slots 312 .

[0066] The bottom wall of the second limiting groove 312 is higher than the first mounting plate 110 to prevent water drops on the first mounting plate 110 from damaging the power board 400 .

[0067] This embodiment uses four second limiting grooves 312, which are evenly arranged between two limiting columns 320, and the second limiting grooves 312 close to the two limiting columns 320 are connected to the adjacent limiting columns 320. The plurality of second limiting grooves 312 arranged at intervals not only take into account the limiting function, but also avoid the waste of materials.

[0068] like Figure 6 and Figure 7 As shown, in an embodiment of the present invention, a first snap-in groove 230 is provided on the side wall of the first mounting plate 110 of the abutting portion 211 facing the power board 400, and the top of the power board 400 is snap-fitted into the first snap-in groove 230 to fix the power board 400.

[0069] A buckle 221 is provided on the second fixing block 220, a second snap-in groove 240 is provided on the side wall of the fixing portion 212 facing the second fixing block 220, a buckle hole 250 is provided on the upper groove wall of the second snap-in groove 240, and when part of the second fixing block 220 is inserted into the second snap-in groove 240, the buckle 221 is snapped into the buckle hole 250, so that the first fixing block 210 is fixed on the second fixing block 220.

[0070] Among them, since the power board 400 is located below the abutment portion 211 after being installed in the limiting assembly 300, a second snap-in groove 240 is provided at the bottom of the abutment portion 211, and the second snap-in groove 240 mainly abuts against the top of the power board 400 to prevent the power board 400 from falling out in a direction perpendicular to the inside of the power board 400.

[0071] In other embodiments, the abutting portion 211 may not be provided with the second engaging groove 240 , and the abutting is performed directly through the side wall of the abutting portion 211 .

[0072] The fixing and removal of the power board 400 is achieved by the detachable connection between the fixing portion 212 on the first fixing block 210 and the first fixing block 210 on the second mounting plate 120 .

[0073] like Figure 8 As shown, in the embodiment of the present utility model, the second fixing block 220 is provided with an avoidance hole 222 , and the lower groove wall of the second clamping groove 240 is inserted into the avoidance hole 222 .

[0074] When the power board 400 is inserted along the first limiting groove 311, the first clamping groove 230 on the abutting portion 211 of the first fixing block 210 is plugged into the top of the power board 400, and then the first fixing block 210 is inserted along the first limiting groove 311. Figure 1Move in the direction of X+, so that part of the hole wall of the avoidance hole 222 in the second fixing block 220 is inserted into the second snap-in groove 240, and the lower side wall of the second snap-in groove 240 is inserted into the avoidance hole 222, and the elastic buckle 221 on the hole wall is snapped into the buckle hole 250 on the groove wall of the second snap-in groove 240, and the second fixing block 220 is fixed by the buckle 221.

[0075] When the power board 400 needs to be removed, a disassembly tool is used to press the buckle 221 to disengage the buckle 221 from the buckle hole 250, and the first fixing block 210 is moved and removed in the opposite direction of X+, and then the power board 400 is pulled out.

[0076] In the embodiment of the utility model, the shape of the avoidance hole 222 and the lower groove wall of the second clamping groove 240 are both trapezoidal. The lower groove wall of the second clamping groove 240 first enters the avoidance hole 222 at one end and is smaller than the other end. The trapezoidal structure is provided to facilitate the lower groove wall of the second clamping groove 240 to be introduced into the avoidance hole 222 during installation, and ensure that it is squeezed tightly after installation to prevent the first fixing block 210 from shaking.

[0077] Recombination Figure 4 In the embodiment of the utility model, a limiting block 500 is further provided on the second mounting plate 120 , and the limiting block 500 abuts against the power board 400 .

[0078] Since there is no fixed structure in the middle of the power board 400, when installing the power board 400 or other components, touching the power board 400 may cause the middle of the power board 400 to deform or break. Therefore, a limit block 500 is set on the side wall of the second mounting plate 120. The limit block 500 supports the middle of the power board 400 to prevent the power board 400 from deforming or breaking.

[0079] In the embodiment of the present utility model, the widths of the first limiting groove 311, the second limiting groove 312 and the first clamping groove 230 are all equal to the thickness of the power board 400. The power board 400 can be further fixed to prevent the power board 400 from shaking.

[0080] In the embodiment of the present utility model, the length of the first limiting groove 311 is equal to the width of the power board 400. The contact area between the first limiting groove 311 and the edge of the power board 400 is increased, thereby improving the stability of the power board 400.

[0081] By adopting the fixing structure of the power board 400 of the utility model, the left and right sides of the power board 400 are limited by the first limiting grooves 311 on the two limiting columns 320, and the upper and lower sides are limited by the second limiting plate located at the bottom of the first mounting plate 110 and the first clamping groove 230 on the first fixing block 210. The front and rear limiting of the power board 400 is achieved by the groove walls of multiple grooves, thereby ensuring the fixing strength of the power board 400.

[0082] In other embodiments, the positions of the buckle hole 250 on the first fixing block 210 and the buckle 221 on the second fixing member can be interchanged.

[0083] Specifically, a buckle 221 is provided on the upper side wall of the second snap-in groove 240 of the first fixing block 210, and a buckle hole 250 is provided on the top of the second fixing block 220. When the first fixing block 210 slides toward the second fixing block 220, the buckle 221 on the first fixing block 210 is inserted into the buckle hole 250 on the second fixing block 220, thereby achieving fixation.

[0084] The two fixing methods in the utility model both adopt push-in operation. When installing the power board 400, it is only necessary to install the power board 400 on the limit assembly 300, and then push the first fixing block 210 along the first clamping groove 230 to achieve fixation. Compared with the method of using screws, this method reduces the time required for workers to operate, optimizes the line rhythm, and improves production efficiency. It also makes the fixing structure of the power board 400 more modular and improves versatility. It also reduces the risk of the power board 400 falling off.

[0085] In other embodiments, Fig. 9 As shown, the power board mounting structure also includes an unlocking component 600, which includes a mounting column 610, a first slide groove 620, a spring 630, a first slider 640 and a second slider 650. The mounting column 610 is mounted on the upper surface of the first fixed block 210, the mounting column 610 is located on the side of the snap hole 250, the first slide groove 620 is arranged in the mounting column 610, the first slider 640 is located in the first slide groove 620, the spring 630 is located at the bottom of the first slider 640, and the second slider 650 is located outside the first slide groove 620 and connected to the first slider 640.

[0086] Among them, the upper surface of the second slider 650 is higher than the upper surface of the first fixed block 210. By pressing the second slider 650, the second slider 650 can slide along the +Y direction. When the buckle 221 is stuck in the buckle hole 250, the second slider 650 pushes the buckle 221 downward out of the buckle hole 250 under pressure, thereby completing the unlocking of the buckle 221. After being released, the second slider 650 is reset under the action of the spring 630 and the first slider 640 to avoid affecting the next clamping of the buckle 221.

[0087] In other embodiments, in combination Figures 10 to 12 As shown, the power board fixing structure proposed by the utility model further includes a sliding assembly 700 , and the sliding assembly 700 is arranged on the top of the second mounting plate 120 .

[0088] The sliding assembly 700 includes a third slider 710 and a second slide groove 720 . The second slide groove 720 is disposed on the top of the second mounting plate 120 . The third slider 710 is slidably connected to the second slide groove 720 . The third slider 710 is hinged to the first fixed block 210 .

[0089] Specific as Fig.10 As shown, when the power board installation structure is used to fix the power board 400, the sliding assembly 700 is pushed to the leftmost side in the figure, and the buckle 221 is snapped into the buckle hole 250 to achieve the limiting of the power board 400.

[0090] Specific as Fig.11 As shown, when the power board 400 needs to be removed, the buckle 221 is first unlocked from the buckle hole 250, and the first fixing block 210 is moved to the right side through the sliding assembly 700.

[0091] Specific as Fig.12 As shown, the power board 400 is separated from the first clamping slot 230 by rotating the first fixing block 210 .

[0092] Through the above solution, the first fixing block 210 and the second mounting plate 120 are integrated, which not only avoids the loss of the first fixing block 210, but also facilitates the fixing and separation between the first fixing block 210 and the power board 400.

[0093] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0094] In general, terms should be understood, at least in part, by the context in which they are used. For example, the terms "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "one" or "a plurality of" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0095] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

Claims

1. A power board installation structure, characterized in that: It comprises a housing (100), a fixing assembly (200) and a limiting assembly (300), wherein the housing (100) comprises a first mounting plate (110) and a second mounting plate (120) located on the side of the first mounting plate (110); The limiting component (300) is arranged on the first mounting plate (110), and the limiting component (300) has a slot (310) for inserting the power board (400); The fixing component (200) is mounted on the second mounting plate (120), and when the power board (400) is plugged into the slot (310), the power board (400) is fixed by the fixing component (200).

2. The power board installation structure according to claim 1, characterized in that: The fixing assembly (200) comprises a first fixing block (210) and a second fixing block (220); the first fixing block (210) comprises an abutting portion (211) and a fixing portion (212); The second fixing block (220) is arranged on the second mounting plate (120); when the power board (400) is mounted on the limiting assembly (300), the fixing portion (212) is engaged with the second fixing block (220), and the abutting portion (211) is abutted with the power board (400), so as to fix the power board (400) inserted into the slot (310) between the abutting portion (211) and the slot (310).

3. The power board installation structure according to claim 2, characterized in that: The slot (310) includes two first limiting slots (311), the limiting assembly (300) includes two limiting posts (320) arranged opposite to each other, the two limiting posts (320) are arranged on the first mounting plate (110), the two first limiting slots (311) are respectively arranged on the two limiting posts (320), and the two ends of the power board (400) are respectively plugged into the two first limiting slots (311).

4. The power board installation structure according to claim 3, characterized in that: The slot (310) further comprises at least two second limiting slots (312), each of the second limiting slots (312) being arranged in sequence on the first mounting plate (110), and the bottom of the power board (400) is snapped into the second limiting slot (312).

5. The power board installation structure according to claim 4, characterized in that: A first clamping groove (230) is provided on the side wall of the abutting portion (211) facing the first mounting plate (110), and the top of the power board (400) is clamped into the first clamping groove (230); The second fixing block (220) is provided with a buckle (221), a second clamping groove (240) is provided on the side wall of the fixing portion (212) facing the second fixing block (220), a buckle hole (250) is provided on the upper groove wall of the second clamping groove (240), and when part of the second fixing block (220) is inserted into the second clamping groove (240), the buckle (221) is clamped into the buckle hole (250), so that the first fixing block (210) is fixed on the second fixing block (220).

6. The power board installation structure according to claim 5, characterized in that: The second fixing block (220) is provided with an avoidance hole (222), and the lower groove wall of the second clamping groove (240) is inserted into the avoidance hole (222).

7. The power board installation structure according to claim 6, characterized in that: The avoidance hole (222) and the lower groove wall of the second clamping groove (240) are both in the shape of a trapezoid.

8. The power board installation structure according to claim 7, characterized in that: A limit block (500) is also provided on the second mounting plate (120), and the limit block (500) is used to abut against the power board (400).

9. The power board installation structure according to claim 8, characterized in that: The widths of the first limiting groove (311), the second limiting groove (312) and the first clamping groove (230) are all equal to the thickness of the power board (400).

10. The power board installation structure according to any one of claims 3 to 9, characterized in that: The length of the first limiting groove (311) is equal to the width of the power board (400).

11. An electric water heater, characterized in that: The housing (100) of the electric water heater is provided with a power board mounting structure as claimed in any one of claims 1 to 10.

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