Water heater

Abstract

The utility model discloses a hot water machine relates to heat transfer technical field, wherein, hot water machine includes the casing, the protective net and the elastic part, the casing one side part is first side part, and the first side part of casing is provided with the opening, and the opening has the first side wall and the second side wall in the first direction relative, and the first side wall is provided with the cooperation portion, and the second side wall is provided with the mounting hole, the protective net is cooperated with the opening, and the protective net includes the net pole along the first direction extension, and the both ends of net pole correspond for first end and second end, and the first end of net pole is cooperated with the cooperation portion, and the second end is cooperated with the mounting hole, the elastic part sets up between the side of second side wall and the second end of net pole, to with the side of net pole elastic abut, carries out the radial location to net pole, restricts the amplitude of the vibration of net pole and produces the transfer path of the vibration energy to the casing, reduces the abnormal sound because of the component collision or friction and produces.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a water heater. Background Technology

[0002] Water heaters are typically designed with a wire mesh for protection. Its main function is to ensure that the equipment can dissipate heat effectively and to prevent external impurities from entering the casing, thereby avoiding damage to the internal components.

[0003] Currently, the wire mesh fixing method used in mass-produced water heaters on the market mainly involves securing one end of the wire mesh pole with screws, while the other end is directly inserted into a pre-drilled mounting hole in the casing. While this fixing method is simple and direct, it is inadequate for handling the severe vibrations generated during water heater operation. These vibrations cause relative displacement between the mesh and the casing, leading to loosening at the connection point. This loosening not only causes additional mechanical noise but may also produce harsh, unpleasant squeaks, severely impacting the user experience and satisfaction. Utility Model Content

[0004] The main purpose of this utility model is to propose a water heater that aims to solve the problem of loosening and abnormal noise caused by vibration in the existing installation of protective nets.

[0005] To achieve the above objectives, the water heater proposed in this utility model includes:

[0006] The housing has a first side portion, which has an opening. The opening has a first side wall and a second side wall opposite to each other in a first direction. The first side wall has a mating part, and the second side wall has a mounting hole.

[0007] A protective net, which mates with the opening, includes a net pole extending along the first direction, the two ends of the net pole being a first end and a second end, the first end of the net pole mates with the mating part, and the second end mates with the mounting hole; and...

[0008] An elastic element is disposed between the second sidewall and the side of the second end of the net rod, for elastically abutting against the side of the net rod to radially limit the net rod.

[0009] In one embodiment, the elastic member has a slot that engages with the periphery of the opening, and the elastic member covers at least a portion of the mounting hole.

[0010] In one embodiment, a concave-convex structure is provided between the first side portion and the inner wall of the slot.

[0011] In one embodiment, the concave-convex structure includes a rib protruding from the sidewall of the slot; and / or,

[0012] The concave-convex structure includes an anti-slip groove recessed on the surface of the first side portion.

[0013] In one embodiment, the elastic element includes a mounting bracket and a rubber sleeve fitted onto the surface of the mounting bracket. The mounting bracket extends outward from the inner side of the periphery of the opening and is bent outward from the outer side of the periphery of the opening to form the slot with the groove facing the first side.

[0014] In one embodiment, the elastic member is installed on the inner side of the first side portion, and the side of the elastic member facing the mounting hole is provided with a mounting groove communicating with the mounting hole, and the elastic member covers at least a portion of the mounting hole;

[0015] The second end of the net pole extends from the mounting hole into the mounting groove.

[0016] In one embodiment, a guide slope is provided at one end of the mounting groove facing the mounting hole.

[0017] In one embodiment, one of the elastic member and the first side portion is provided with a mounting protrusion, and the other is provided with a insertion hole for the mounting protrusion to be inserted into; and / or,

[0018] The elastic element is bonded to the first side portion.

[0019] In one embodiment, the mounting protrusion includes a first mounting protrusion and a second mounting protrusion, the first mounting protrusion and the second mounting protrusion being spaced apart in the first direction.

[0020] In one embodiment, an identification portion is further provided on the side of the elastic member opposite to the first side portion.

[0021] In one embodiment, one of the first side portion and the elastic member is provided with a positioning protrusion, and the other is provided with a positioning groove that positions and engages with the positioning protrusion.

[0022] In one embodiment, the second end surface of the mesh pole is provided with an anti-slip layer.

[0023] In this invention, an elastic element is provided between the second sidewall and the side of the second end of the mesh rod. The elastic element elastically abuts against the side of the mesh rod. Through radial interference limiting of the elastic element, the amplitude of the mesh rod's movement caused by vibration is restricted, and the transmission path of vibration energy to the housing is blocked, reducing abnormal noise caused by component collisions or friction. Simultaneously, the buffering characteristics of the elastic element absorb some vibration energy, further reducing noise transmission. This solves the problems of loosening and abnormal noise caused by vibration in traditional fixing methods, achieving a stable connection between the protective mesh and the housing. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the water heater provided by this utility model;

[0026] Figure 2 for Figure 1 Front view of a medium-temperature water heater;

[0027] Figure 3 for Figure 2 Cross-sectional view of AA in the middle;

[0028] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0029] Figure 5 for Figure 1 Schematic diagram of the middle and side sections;

[0030] Figure 6 for Figure 5 A magnified view of a section at point C;

[0031] Figure 7 A schematic diagram of another embodiment of the water heater provided by this utility model;

[0032] Figure 8 for Figure 7 A magnified view of a section at point D;

[0033] Figure 9 for Figure 7 A structural schematic diagram of a medium-temperature hot water heater from another perspective;

[0034] Figure 10 for Figure 9 A magnified view of a section at point E in the middle;

[0035] Figure 11 for Figure 9 Cross-sectional view of a medium-temperature water heater;

[0036] Figure 12 for Figure 11 A magnified view of a section at point F in the middle;

[0037] Figure 13 for Figure 7 A schematic diagram of the middle side section.

[0038] Explanation of icon numbers:

[0039] 100. Water heater; 1. Housing; 11. First side; a. Opening; 111. First side wall; 112. Second side wall; e. Insertion hole; 2. Fitting part; b. Mounting hole; 3. Protective net; 31. Net pole; 32. Anti-slip layer; 4. Elastic element; c. Slot; 41. Rib; 42. Mounting bracket; 43. Rubber sleeve; d. Mounting groove; 44. Guide slope; 45. Mounting protrusion; 451. First mounting protrusion; 452. Second mounting protrusion; 46. Identification part.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] Currently, the wire mesh fixing method used in mass-produced water heaters on the market mainly involves securing one end of the wire mesh pole with screws, while the other end is directly inserted into a pre-drilled mounting hole in the casing. While this fixing method is simple and direct, it is inadequate for handling the severe vibrations generated during water heater operation. These vibrations cause relative displacement between the mesh and the casing, leading to loosening at the connection point. This loosening not only causes additional mechanical noise but may also produce harsh, unpleasant squeaks, severely impacting the user experience and satisfaction.

[0045] This utility model proposes a water heater 100, which aims to solve the problem of loosening and abnormal noise caused by vibration in the installation of existing protective nets.

[0046] Please see Figures 1 to 3 In one embodiment of this utility model, the water heater 100 includes a housing 1, a protective net 3, and an elastic element 4. One side of the housing 1 is a first side 11, and the first side 11 of the housing 1 is provided with an opening a. The opening a has a first side wall 111 and a second side wall 112 opposite to each other in a first direction. The first side wall 111 is provided with a mating part 2, and the second side wall 112 is provided with a mounting hole b. The protective net 3 mates with the opening a. The protective net 3 includes a net rod 31 extending along the first direction. The two ends of the net rod 31 are a first end and a second end, respectively. The first end of the net rod 31 mates with the mating part 2, and the second end mates with the mounting hole b. The elastic element 4 is disposed between the second side wall 112 and the side of the second end of the net rod 31, and is used to elastically abut against the side of the net rod 31 to radially limit the net rod 31.

[0047] It should be noted that the first side portion 11 of the housing 1 is provided with an opening a, and the two sides of the opening a are a first side wall 111 and a second side wall 112, respectively. The first side wall 111 and the second side wall 112 are the wall surfaces of the opening a in the thickness direction of the first side portion 11. It should be noted that the first side portion 11 can be formed by a single sheet metal part or by assembling multiple sheet metal parts. Therefore, the first side wall 111 can be the side wall of the opening a in the thickness direction of a sheet metal part, or it can be formed by multiple side walls stacked in the thickness direction of multiple sheet metal parts.

[0048] The first sidewall 111 is provided with a mating part 2 that mates with the protective net 3 pole 31. The mating part 2 can be a screw-in structure or a snap-fit ​​structure, etc. The second sidewall 112 is provided with a mounting hole b that mates with the second end of the pole 31. Through the mating parts 2 and mounting holes b on both sidewalls, the protective net 3 can be fixedly installed on the housing 1.

[0049] The protective net 3 has a pole 31 extending along the first direction. Its first end is fixed to the first side wall 111 of the housing 1 through the mating part 2, and the second end is inserted into the mounting hole b of the second side wall 112, so that the pole 31 is limited by both ends in the axial direction. It should be noted that the traditional fixing method is prone to radial loosening between the pole 31 and the housing 1 due to vibration, which can cause abnormal noise.

[0050] An elastic element 4 is provided between the second sidewall 112 and the side of the second end of the mesh rod 31. The elastic element 4 forms an interference fit with the side of the mesh rod 31 through elastic deformation. When the second end of the mesh rod 31 is inserted into the mounting hole b, the elastic element 4 is compressed and continuously applies radial pressure to the mesh rod 31, so that the mesh rod 31 and the mounting hole b of the second sidewall 112 are kept in close contact, thereby eliminating radial clearance.

[0051] It should be noted that the water heater 100 also includes an elastic element 4, which can be a spring sheet, a rubber pad, or an elastic buckle, etc. Of course, other possible forms can also be used, and the specific form can be determined according to the actual situation. This specification does not limit this embodiment.

[0052] In this invention, an elastic element 4 is provided between the second sidewall 112 and the side of the second end of the mesh rod 31. The elastic element 4 elastically abuts against the side of the mesh rod 31. Through the radial interference limit of the elastic element 4, the amplitude of the mesh rod 31's movement caused by vibration is limited, and the transmission path of vibration energy to the housing 1 is blocked, reducing abnormal noise caused by component collision or friction. At the same time, the buffering characteristics of the elastic element 4 can absorb some vibration energy, further reducing noise transmission, thereby solving the problem of loosening and abnormal noise caused by vibration in traditional fixing methods, and achieving a stable connection between the protective mesh 3 and the housing 1.

[0053] In the first embodiment, the elastic member 4 has a slot c that holds the periphery of the opening a, and the elastic member 4 covers at least part of the mounting hole b.

[0054] The elastic element 4 is disposed along the periphery of the opening a, and the elastic element 4 can be a rubber or silicone strip. The elastic element 4 can be a ring-shaped or segmented strip, or other possible forms. The specific form can be determined according to the actual situation, and this specification does not limit it in this way.

[0055] The inner side of the elastic element 4 is provided with a slot c that matches the shape of the edge of the opening a. The elastic element 4 can be directly engaged with the inner periphery of the opening a of the housing 1 through the slot c, thereby enabling quick positioning and fixation of the elastic element 4.

[0056] The elastic element 4 covers a portion of the mounting hole b on the second sidewall 112, making the actual exposed opening a of the mounting hole b smaller than the diameter of the second end of the mesh rod 31, thus forming a flexible barrier layer. When the second end of the mesh rod 31 is inserted into the mounting hole b (inserted at an angle), the elastic element 4 is compressed and undergoes elastic deformation, allowing the mesh rod 31 to pass through; when the mesh rod 31 is fully inserted, the elastic element 4 returns to its original shape, and its covered area is in close contact with the side of the mesh rod 31, forming an interference fit, thus fixing the mesh rod 31 in the mounting hole b through radial pressure.

[0057] It should be noted that the adhesive strip is squeezed and deformed to one side, providing an inclined guide path for the mesh rod 31 and reducing the alignment accuracy requirements. As the mesh rod 31 is fully inserted, the adhesive strip recovers its deformation and tightly abuts against the mesh rod 31 from the side, forming a stable radial limit. This inclined insertion design simplifies the assembly process, eliminating the need for vertical alignment with the mounting hole b, and significantly improving assembly efficiency.

[0058] The elastic element 4 is located on the outside of the opening a of the housing 1, and its exposed rubber strip structure can be directly replaced or maintained from the outside. If it is necessary to remove the protective net 3, only partial cutting or manual squeezing of the rubber strip is required to deform it, and the net rod 31 can be removed without disassembling the internal components of the housing 1. At the same time, the interference fit of the rubber strip can maintain its elasticity under long-term vibration, reducing loosening of the fit due to material fatigue and further suppressing the generation of abnormal noise.

[0059] Furthermore, in order to increase the stable connection between the elastic element 4 and the housing 1, in this embodiment, a concave-convex structure is provided between the first side portion 11 and the inner wall of the slot c.

[0060] The concave-convex structure can be configured as serrated, striped, or dot-matrix protrusions and grooves. In this way, by increasing the coefficient of friction of the contact surface, the elastic element 4 is prevented from sliding or shifting along the length or width of the slot c when the housing 1 vibrates.

[0061] This configuration, through the interlocking of protrusions and grooves, further fixes the position of the elastic element 4, ensuring that the elastic element 4 is always in the correct working state, avoiding the deviation of the elastic element 4 caused by vibration, which would affect the radial limiting effect of the net rod 31, thereby maintaining the stability of the connection between the protective net 3 and the housing 1, and further reducing the risk of abnormal noise.

[0062] Specifically, in one embodiment, the concave-convex structure includes a rib 41 protruding from the side wall of the slot c.

[0063] In another embodiment, the concave-convex structure includes an anti-slip groove recessed on the surface of the first side portion 11.

[0064] The rib 41 is embedded in the surface of the housing 1 when the elastic element 4 is inserted into the periphery of the opening a of the housing 1, while the anti-slip groove cooperates with the protrusion or elastic deformation area of ​​the outer wall of the slot c of the elastic element 4. By increasing the frictional resistance of the contact surface, it effectively prevents the elastic element 4 from sliding or rotating in the length direction of the slot c under vibration environment, ensuring that the elastic element 4 is always accurately positioned and maintaining its radial limiting stability on the net rod 31.

[0065] Specifically, in this embodiment, the elastic member 4 includes a mounting bracket 42 and a rubber sleeve 43 fitted onto the surface of the mounting bracket 42. The mounting bracket 42 extends outward from the inner side of the periphery of the opening a and is bent outward from the outer side of the periphery of the opening a to form the slot c with the groove facing the first side 11.

[0066] It should be noted that the elastic element 4 can be composed of a mounting bracket 42 made of metal or rigid plastic and a rubber sleeve 43 covering it.

[0067] Mounting bracket 42 extends outward from the inner side of the periphery of opening a and bends outward to form a slot c structure with the groove facing the inside of the housing 1. In other words, in cross-section, mounting bracket 42 is U-shaped. The rubber sleeve 43 tightly wraps around the surface of the extended and bent sections of mounting bracket 42.

[0068] The rigid bending structure of the mounting bracket 42 enables a stable basic support frame. Due to the flexibility of its material, the rubber sleeve 43 makes the elastic element 4 flexible as a whole. This design ensures that the slot c is tightly engaged with the periphery of the opening a of the housing 1, and the deformation of the rubber sleeve 43 provides interference resistance to the net pole 31. At the same time, the material of the rubber sleeve 43 can further absorb vibration energy and optimize the noise reduction effect.

[0069] In the second embodiment, the elastic member 4 is installed on the inner side of the first side portion 11, and the side of the elastic member 4 facing the mounting hole b is provided with a mounting groove d communicating with the mounting hole b. The elastic member 4 covers at least part of the mounting hole b. The second end of the net rod 31 extends from the mounting hole b into the mounting groove d.

[0070] The elastic element 4 is installed on the inner side of the first side portion 11. That is, the elastic element 4 can be regarded as an elastic pad and fixed to the inner side of the first side portion 11 of the housing 1. The side of the elastic element 4 facing the mounting hole b of the second side wall 112 has a mounting groove d that is aligned with or parallel to the axis of the mounting hole b. The mounting groove d is fully connected to the mounting hole b and the opening a size is slightly smaller than the diameter of the second end of the mesh rod 31. The mounting groove d penetrates the thickness of the elastic element 4 and is connected to the mounting hole b.

[0071] The elastic element 4 covers a portion of the mounting hole b on the second sidewall 112, forming a local interference fit area. When the second end of the mesh rod 31 is inserted through the mounting hole b, it needs to overcome the elastic resistance of the interference fit area of ​​the elastic element 4 to pass through the mounting hole b and enter the mounting groove d. At this time, the elastic element 4 tightly clamps the mesh rod 31 between the mounting groove d and the second sidewall 112 through the radial pressure generated by the deformation.

[0072] Thus, by placing the elastic element 4 inside the first side portion 11 of the housing 1, external environmental factors such as rainwater and dust can be prevented from directly corroding the elastic material, extending its service life. At the same time, the support of the inner wall of the housing 1 enhances the structural rigidity of the elastic element 4, enabling it to more stably withstand the radial pressure generated by the vibration of the net rod 31, further suppressing the movement of the net rod 31. In addition, placing the elastic element 4 inside the first side portion 11 of the housing 1 eliminates the need for exposed parts, improving the neatness of the appearance and the compactness of the assembly.

[0073] Furthermore, in this embodiment, a guide slope 44 is provided at one end of the mounting groove d facing the mounting hole b.

[0074] It is understandable that the end of the mounting groove d facing the mounting hole b of the second side wall 112 is provided with an inclined guide slope 44, which gradually narrows from the edge of the mounting hole b into the interior of the mounting groove d, forming a conical or arc-shaped guide surface.

[0075] The function of the guide ramp 44 is to assist the second end of the net rod 31 in compressing the elastic element 4 through the gradually expanding contact area during insertion, thereby reducing the initial insertion resistance and guiding the net rod 31 to accurately enter the mounting groove d. This avoids jamming or damage caused by misalignment or sudden interference resistance. At the same time, the ramp design ensures that the elastic element 4 is subjected to uniform force, ensuring that the net rod 31 maintains a stable radial interference clamping effect after final positioning.

[0076] Furthermore, in order to more stably assemble the elastic element 4 with the housing 1, in the first embodiment, one of the elastic element 4 and the first side portion 11 is provided with a mounting protrusion 45, and the other is provided with a socket e for the mounting protrusion 45 to be inserted and fitted.

[0077] It is understandable that one of the elastic element 4 and the first side 11 is provided with a mounting protrusion 45, such as a column or a buckle, and the other is provided with a corresponding insertion hole e, such as a through hole or a blind hole. The elastic element 4 is precisely positioned and fixed to the inside of the first side 11 through the insertion and fitting, so as to avoid the displacement of the elastic element 4 caused by vibration.

[0078] In the second embodiment, the elastic element 4 is bonded to the first side portion 11.

[0079] The elastic element 4 is directly bonded to the surface of the first side portion 11 using an industrial adhesive, such as structural adhesive or hot melt adhesive, thereby enhancing the fixing effect by utilizing the high-strength adhesion of the adhesive.

[0080] It should be noted that the two methods mentioned above can be used alone or in combination. For example, after insertion, auxiliary bonding can be used to ensure the ease of installation of the elastic element 4 and improve long-term reliability through double fixation, preventing the elastic element 4 from falling off or loosening in a vibration environment, and ensuring that its radial limiting function for the net pole 31 remains effective.

[0081] Specifically, in this embodiment, the mounting protrusion 45 includes a first mounting protrusion 451 and a second mounting protrusion 452, which are spaced apart in the first direction.

[0082] The mounting protrusion 45 is divided into a first mounting protrusion 451 and a second mounting protrusion 452, which are respectively disposed on the top surface and side surface of the elastic member 4, or other different positions. The first mounting protrusion 451 and the second mounting protrusion 452 are arranged in a front-to-back or up-and-down interval in the first direction of the extension of the net pole 31.

[0083] By inserting the elastic element 4 into the first side 11 of the housing 1, the first mounting protrusion 451 and the second mounting protrusion 452 form multi-point positioning with the corresponding insertion hole e. This not only prevents the elastic element 4 from rotating around the axis of the mesh pole 31, but also disperses the shear force generated by vibration, significantly improving the stability of the installation of the elastic element 4. This design makes the elastic element 4 more evenly stressed, avoiding local deformation or loosening that may be caused by single-point fixing, ensuring that it always acts precisely on the side of the mesh pole 31 and maintains the interference clamping effect.

[0084] Furthermore, in this embodiment, the elastic member 4 is provided with an identification part 46 on the side opposite to the first side 11.

[0085] The marking section 46 may be a color mark, text, arrow pattern or embossed tactile symbol, used to clearly indicate the installation direction or positioning reference of the elastic element 4.

[0086] For example, the marking section 46 can indicate the insertion direction of the net pole 31 with an arrow, or distinguish the numbers of different specifications of elastic elements 4, so as to avoid misalignment of the elastic element 4 with the mounting hole b / insertion hole e due to incorrect direction or model mismatch during installation.

[0087] By setting the marking part 46, intuitive visual prompts can be provided, and the risk of operational errors by assembly personnel can be warned in advance, ensuring that the elastic element 4 and the mounting protrusion 45 and the insertion hole e of the housing 1 are precisely matched.

[0088] Furthermore, in this embodiment, one of the first side portion 11 and the elastic member 4 is provided with a positioning protrusion, and the other is provided with a positioning groove that positions and cooperates with the positioning protrusion.

[0089] One of the first side portion 11 and the elastic member 4 is provided with a positioning protrusion, and the other is provided with a positioning groove of matching shape. The first side portion 11 and the elastic member 4 achieve precise positioning of the elastic member 4 by the cooperation of the positioning protrusion being embedded in the positioning groove.

[0090] This design ensures that the elastic element 4 can only mate with the housing 1 at a specific angle and position during installation, avoiding misalignment between the mounting groove d and the mounting hole b due to misalignment.

[0091] Furthermore, in order to reduce the risk of the net pole 31 slipping off, in this embodiment, the second end surface of the net pole 31 is provided with an anti-slip layer 32.

[0092] It should be noted that the second end surface of the net pole 31 is formed with a continuous or spaced anti-slip layer 32, such as a rubber or silicone coating, through an impregnation process. Specifically, the net pole 31 is immersed in a liquid colloid and then cured to form a solid shape, so that the anti-slip layer 32 is tightly bonded to the metal pole body.

[0093] The anti-slip layer 32 increases the friction coefficient of the contact surface between the net rod 31 and the elastic element 4, which can suppress the slight sliding of the net rod 31 along the axial or radial direction under vibration conditions, and further reduce the abnormal noise caused by relative displacement. At the same time, the flexible anti-slip layer 32 formed by impregnation can be slightly deformed to adapt to the clamping pressure of the elastic element 4, enhance the stability of the fit between the two, and reduce the risk of loosening of the fit caused by long-term vibration.

[0094] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A water heater, characterized by comprising: The utility model relates to a protective screen for a computer, comprising: a cabinet, one side of which is a first side, the first side of the cabinet being provided with an opening, the opening having a first side wall and a second side wall opposite in a first direction, the first side wall being provided with a fitting part, and the second side wall being provided with a mounting hole; a protective screen cooperating with the opening, the protective screen comprising a screen rod extending in the first direction, two ends of the screen rod corresponding to a first end and a second end, the first end of the screen rod cooperating with the fitting part, and the second end cooperating with the mounting hole; and a resilient member provided between the second side wall and a side surface of the second end of the screen rod, and elastically abutting against the side surface of the screen rod to radially limit the screen rod.

2. The water heater of claim 1, wherein The resilient member is provided with a clamping groove clamped around the opening, and the resilient member covers at least part of the mounting hole.

3. The water heater of claim 2, wherein A concave-convex structure is provided between the first side and an inner wall of the clamping groove.

4. The water heater of claim 3, wherein The concave-convex structure comprises a convex rib provided on a side wall of the clamping groove; and / or The concave-convex structure comprises an anti-slip groove provided on a surface of the first side.

5. The water heater of claim 2, wherein The resilient member comprises a mounting bracket and a rubber sleeve sleeved on a surface of the mounting bracket, the mounting bracket extending outward from an inner side of the opening and being bent toward an outer side of the opening to form the clamping groove with a notch facing the first side.

6. The water heater of claim 1, wherein The resilient member is mounted on an inner side of the first side, and one side of the resilient member facing the mounting hole is provided with a mounting groove in communication with the mounting hole, and the resilient member covers at least part of the mounting hole. The second end of the screen rod extends into the mounting groove from the mounting hole.

7. The water heater of claim 6, wherein One end of the mounting groove facing the mounting hole is provided with a guide inclined surface.

8. The water heater of claim 6, wherein the first and second heating elements are arranged in a series configuration. One of the resilient member and the first side is provided with a mounting protrusion, and the other is provided with a insertion hole for insertion and cooperation of the mounting protrusion; and / or The resilient member and the first side are bonded.

9. The water heater of claim 8, wherein the first and second electrical conductors are electrically connected to the heating element by a single electrical connector. The mounting protrusion comprises a first mounting protrusion and a second mounting protrusion, and the first mounting protrusion and the second mounting protrusion are arranged at intervals in the first direction.

10. The water heater of claim 9, wherein the controller is configured to: The side of the resilient member away from the first side is further provided with an identification part.

11. The water heater of claim 6, wherein One of the first side and the resilient member is provided with a positioning protrusion, and the other is provided with a positioning groove for positioning cooperation with the positioning protrusion.

12. A water heater as claimed in any one of claims 1 to 11, wherein, A surface of the second end of the screen rod is provided with an anti-slip layer.

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