Shell assembly and water heater with same

Abstract

The utility model discloses a shell assembly and a water heater with the same. The shell assembly is used for the water heater, an overflow opening is formed in the shell assembly, and the shell assembly comprises a shell and a maintenance cover. An accommodating cavity and an opening are formed in the shell, the accommodating cavity is communicated with the opening, and the accommodating cavity is at least used for installing a heating component; the maintenance cover comprises a cover body and a first convex rib, the first convex rib is circumferentially arranged along the outer edge of the cover body, the cover body is detachably inserted into the opening through the first convex rib, and a drainage groove is formed in the end, close to the cover body, of the first convex rib; the drainage groove is communicated with the overflow opening so as to be at least used for draining water to the overflow opening, and the water flows to the outside of the shell assembly through the overflow opening. The problem that in the prior art, a waterproof structure of a water heater is poor in waterproof performance can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of water heaters, and in particular to a housing assembly and a water heater having the same. Background Art

[0002] The water heater is usually composed of a shell, an inner tank, a heating element, a maintenance cover, etc. Among them, the heating element is generally located at the end of the shell and integrated between the shell and the maintenance cover to form an electrical room of the water heater.

[0003] Water heaters are widely used in shower rooms such as bathrooms because of their fast heating speed and small size. However, since the maintenance cover is protruding from the outer surface of the shell, a step is formed at the junction of the maintenance cover and the shell, which is easy to store moisture when the water heater is sprayed from the outside. When the maintenance cover is loose, the moisture at the step can enter the electrical room through the assembly gap between the shell and the maintenance cover, causing adverse effects on the internal components. Therefore, in order to ensure the safety and service life of the electrical room, the waterproof performance between the shell and the maintenance cover is particularly important for the overall waterproofness of the water heater.

[0004] At present, the existing water heaters generally have two to three layers of water retaining ribs between the outer shell and the maintenance cover to achieve waterproofing between the outer shell and the maintenance cover. However, the waterproof performance of this waterproof structure is poor. When water enters the interior of the electrical room from the assembly gap between the outer shell and the maintenance cover, it will cross the water retaining ribs due to the water surface tension and enter the interior of the electrical room, affecting the use of internal components. Utility Model Content

[0005] The main purpose of the present application is to provide a housing assembly and a water heater having the same, so as to solve the problem of poor waterproof performance of the waterproof structure of the water heater in the prior art.

[0006] According to one aspect of the present application, a housing assembly is provided, the housing assembly is used for a water heater, an overflow port is provided on the housing assembly, and the housing assembly comprises:

[0007] A housing, wherein a receiving cavity and an opening are provided on the housing, the receiving cavity is communicated with the opening, and the receiving cavity is at least used for installing a heating element;

[0008] A maintenance cover, the maintenance cover includes a cover body and a first rib, the first rib is circumferentially arranged along the outer edge of the cover body, the cover body is detachably inserted into the opening through the first rib, and a drainage groove is arranged at one end of the first rib close to the cover body, and the drainage groove is connected with the overflow port to at least drain water to the overflow port and flow to the outside of the shell assembly through the overflow port.

[0009] Further, along the first direction, the drainage groove extends from the first side of the maintenance cover to the second side of the maintenance cover.

[0010] Furthermore, the depth of the drainage groove along the inner and outer directions of the opening is smaller than the thickness of the first rib along the inner and outer directions of the opening.

[0011] Further, the housing comprises a first shell and a second shell, the first shell and the second shell are fixedly connected and enclosed to form a containing space, the containing space is at least used to install the inner tank of the water heater, and the first shell has the containing cavity and the opening;

[0012] The first shell is provided with a second convex rib, which is arranged in the accommodating cavity along the circumference of the first shell, and an accommodating gap for inserting the first convex rib is provided between the second convex rib and the outer edge of the first shell.

[0013] Further, along the second direction, a plurality of first card slots and a plurality of second card slots are arranged at intervals on opposite sides of the second convex rib, a plurality of first claws are arranged on the cover body, and a plurality of second claws are arranged on the second convex rib, and the plurality of first claws are inserted into the plurality of first card slots one by one, and the plurality of second claws are inserted into the plurality of second card slots one by one.

[0014] Furthermore, a plurality of limiting hooks are arranged on a first side of the cover body close to the maintenance cover, a plurality of limiting posts are arranged in the accommodating gap, and the plurality of limiting hooks are hooked on the plurality of limiting posts in a one-to-one correspondence.

[0015] Furthermore, the cover body is provided with an elastic stopper, the shell is provided with a protruding section, and the elastic stopper abuts against the protruding section.

[0016] Furthermore, the shell assembly also includes a locking and retaining member, a first mounting hole adapted to the locking and retaining member is provided on the shell, a second mounting hole adapted to the locking and retaining member is provided on the maintenance cover, the first mounting hole and the second mounting hole are connected, and the locking and retaining member is detachably inserted into the first mounting hole and the second mounting hole.

[0017] Furthermore, the overflow port is provided on one of the shell and the maintenance cover.

[0018] On the other hand, the present application also provides a water heater, which includes the above-mentioned shell assembly, and the water heater also includes an inner tank and a heating element, the inner tank is arranged in the accommodating space, and the heating element is arranged in the accommodating cavity.

[0019] In the present application, when the shell assembly is actually processed, a first convex rib can be provided in the circumference of the cover body, and a drainage groove can be provided at one end of the first convex rib close to the cover body, and then the cover body can be inserted into the opening through the first convex rib to achieve a fixed connection between the maintenance cover and the shell. After the assembly is completed, since the maintenance cover is provided protruding from the outer surface of the shell, a step will be formed at the junction of the maintenance cover and the shell. When the water heater is sprayed from the outside, a large amount of water droplets will accumulate at the step. These water may enter the inside of the shell from the assembly gap between the maintenance cover and the shell, and these infiltrated water will first enter the drainage groove, and then flow from the drainage groove to the overflow port. The overflow port outputs the infiltrated water to the outside of the shell. In this way, it is effectively prevented that the external water enters the inside of the shell and has an adverse effect on the various heating components located in the accommodating cavity, thereby improving the waterproof performance of the shell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of an explosion of a water heater disclosed in an embodiment of the present application;

[0022] Figure 2 It is a front view of the water heater disclosed in the embodiment of the present application;

[0023] Figure 3 A side view of a water heater disclosed in an embodiment of the present application;

[0024] Figure 4 The embodiments of this application disclose the attached Figure 3 A magnified schematic diagram of the middle B area;

[0025] Figure 5 A top view of a water heater disclosed in an embodiment of the present application;

[0026] Figure 6 The attached embodiment disclosed in this application Figure 2 AA cross-sectional diagram of the water heater in FIG.

[0027] Figure 7 The attached embodiment disclosed in this application Figure 2 Schematic diagram of the cross section of the water heater CC;

[0028] Figure 8 The attached embodiment disclosed in this application Figure 7 A magnified schematic diagram of the middle D area;

[0029] Fig. 9It is a schematic diagram of the structure in which the first clamping claw is buckled with the first clamping groove, the second clamping claw is buckled with the second clamping groove, and the elastic stopper abuts against the protruding section disclosed in the embodiment of the present application;

[0030] Fig.10 This is a schematic diagram of the structure of the maintenance cover disclosed in the embodiment of the present application.

[0031] The above drawings include the following reference numerals:

[0032] 10. Shell assembly; 11. Shell; 1101. Accommodation cavity; 1102. Opening; 1103. Accommodation space; 111. First shell; 1110. Accommodation gap; 1111. First mounting hole; 112. Second shell; 12. Maintenance cover; 1201. First side; 1202. Second side; 121. Cover body; 122. First convex rib; 123. Second mounting hole; 30. Drainage groove; 40. Second convex rib; 50. First clamping groove; 60. Second clamping groove; 70. First clamping claw; 80. Second clamping claw; 90. Limiting column; 100. Limiting hook; 110. Elastic stop member; 120. Protruding section; 130. Locking stop member; 140. Inner tank; 150. Heating element. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] As described in the background technology, since the maintenance cover of the water heater is arranged to protrude from the outer surface of the shell, a step will be formed at the junction of the maintenance cover and the shell. The step is easy to store moisture when the water heater is sprayed from the outside. When the maintenance cover becomes loose, the moisture on the step will enter the interior of the electrical room through the assembly gap between the shell and the maintenance cover, thereby causing adverse effects on the internal components. The existing waterproof structure of the water heater is to set two to three layers of water retaining ribs between the shell and the maintenance cover. When water enters the interior of the electrical room from the assembly gap between the shell and the maintenance cover, it will cross the water retaining ribs due to the water surface tension and enter the interior of the electrical room. Therefore, in order to improve the waterproof performance of the water heater waterproof structure, the inventor of the present application has designed a new shell assembly, and the shell assembly of the present application will be described in detail below in conjunction with the accompanying drawings.

[0037] It should be noted that the first direction in this application is the attached Figure 1 The direction indicated by the letter X in the middle, the second direction is the Figure 1 The direction indicated by the letter Y in the opening refers to the direction from the inside of the opening to the outside of the opening; Figure 4 The step formed between the service cover and the housing which tends to store moisture is shown.

[0038] See also Figures 1 to 10 As shown, the present application provides a housing assembly 10 , which is used for a water heater. An overflow port (not shown in the drawings) is provided on the housing assembly 10 , and the housing assembly 10 includes a housing 11 and a maintenance cover 12 .

[0039] Among them, the shell 11 is provided with a accommodating cavity 1101 and an opening 1102, the accommodating cavity 1101 is connected with the opening 1102, and the accommodating cavity 1101 is at least used to install the heating component 150; the maintenance cover 12 includes a cover body 121 and a first convex rib 122, the first convex rib 122 is circumferentially arranged along the outer edge of the cover body 121, and the cover body 121 is detachably inserted into the opening 1102 through the first convex rib 122, and a drainage groove 30 is provided at one end of the first convex rib 122 close to the cover body 121, and the drainage groove 30 is connected with the overflow port so as to at least drain water to the overflow port and flow to the outside of the shell assembly 10 through the overflow port.

[0040] In this embodiment, when the housing assembly 10 is actually processed, a first rib 122 may be provided on the circumference of the cover 121, and a drainage groove 30 may be provided at one end of the first rib 122 close to the cover 121, and then the cover 121 may be inserted into the opening 1102 through the first rib 122 to achieve a fixed connection between the maintenance cover 12 and the housing 11. After the assembly is completed, since the maintenance cover 12 is provided protruding from the outer surface of the housing 11, a step will be formed at the junction of the maintenance cover 12 and the housing 11. When the water heater is sprayed from the outside, a large amount of water will accumulate at the step, and this water may enter the inside of the housing 11 from the assembly gap between the maintenance cover 12 and the housing 11, and this infiltrated water will first enter the drainage groove 30, and then flow from the drainage groove 30 to the overflow port, and the overflow port will output the infiltrated water to the outside of the housing 11, so that the external water is effectively prevented from entering the inside of the electrical room and causing adverse effects on the heating components 150, thereby improving the waterproof performance of the housing assembly 10.

[0041] That is to say, compared with the waterproof structure of the water heater in the prior art, the present embodiment can collect the water flowing in from the outside by setting the drainage groove 30 on the maintenance cover 12, and make the water flow to the overflow port along the drainage groove 30, and then be discharged from the overflow port, so as to prevent the water from entering the electrical room and avoid the heating element 150 from being adversely affected, thereby improving the waterproof performance of the housing assembly 10, and then ensuring the normal operation of the water heater, and improving the safety of the water heater to a certain extent. At the same time, when it is necessary to install the maintenance cover 12, it is only necessary to insert the first rib 122 into the opening 1102; when it is necessary to disassemble the maintenance cover 12, it is only necessary to remove the maintenance cover 12 from the opening 1102. The structure is simple and it is convenient to disassemble and install the maintenance cover 12.

[0042] Further, see Figure 1 , Figures 7 and 8 as well as Fig.10As shown, along the first direction, the drainage groove 30 in this embodiment extends from the first side 1201 of the maintenance cover 12 to the second side 1202 of the maintenance cover 12. That is to say, the drainage groove 30 extends from the top of the maintenance cover 12 to the bottom of the maintenance cover 12, so that when external water enters the drainage groove 30, it can flow quickly in the drainage groove 30 under the action of gravity, and is transported to the overflow port through the drainage groove 30, and then discharged from the overflow port, thereby increasing the flow speed of external water, preventing external water from accumulating in the drainage groove 30, and thus preventing water from entering the accommodating cavity 1101 and causing adverse effects on components.

[0043] Further, see Figure 8 As shown, the depth of the drainage groove 30 in the embodiment along the inner and outer directions of the opening 1102 is less than the thickness of the first convex rib 122 along the inner and outer directions of the opening 1102. In this way, the first convex rib 122 can block the water entering from the outside, and the external water will not overflow the upper surface of the first convex rib 122 and enter the interior of the electrical room, thereby ensuring that the external water can only flow along the drainage groove 30 to the overflow port, and then flow out of the housing assembly 10 from the overflow port, further improving the waterproof performance of the housing assembly 10.

[0044] Further, as shown in the figure, the shell 11 in this embodiment includes a first shell 111 and a second shell 112, and the first shell 111 and the second shell 112 are fixedly connected and enclosed to form a accommodating space 1103, and the accommodating space 1103 is at least used to install the inner tank 140 of the water heater, and the first shell 111 has an accommodating cavity 1101 and an opening 1102; the first shell 111 is provided with a second rib 40, and the second rib 40 is arranged in the accommodating cavity 1101 along the circumference of the first shell 111, and there is an accommodating gap 1110 between the second rib 40 and the outer edge of the first shell 111 for inserting the first rib 122. That is to say, in this embodiment, the maintenance cover 12 can be installed on the first shell 111 through the first rib 122. After assembly, the first rib 122 is located on the outer peripheral surface of the second rib 40. With this arrangement, when a large amount of external water accumulates in the drainage groove 30 in a short time, part of the external water will overflow the upper surface of the first rib 122 and flow into the electrical room. At this time, the second rib 40 can receive the overflowing external water, which will flow to the bottom of the first shell 111 along the extension direction of the second rib 40 and then be diverted to the outside through the overflow port. The double-layer waterproof design of the drainage groove 30 and the second rib 40 in this embodiment greatly improves the waterproof performance of the housing assembly 10, protects the normal operation of the internal components, and meets the waterproof requirements of the housing assembly 10.

[0045] Further, to facilitate the assembly between the first housing 111 and the maintenance cover 12, see Figure 1As shown, along the second direction, the second convex rib 40 of this embodiment is provided with a plurality of first slots 50 and a plurality of second slots 60 at intervals on opposite sides, the cover body 121 is provided with a plurality of first claws 70, the second convex rib 40 is provided with a plurality of second claws, the plurality of first claws 70 are correspondingly inserted into the plurality of first slots 50, and the plurality of second claws are correspondingly inserted into the plurality of second slots 60. That is to say, the maintenance cover 12 and the first housing 111 are buckled together by the cooperation of the claws and the slots. Specifically, a plurality of first card slots 50 and a plurality of second card slots 60 are provided on the second convex rib 40, a plurality of first claws 70 are provided at corresponding positions of the cover body 121 of the maintenance cover 12, and a plurality of second claws are provided at corresponding positions of the first convex rib 122 of the maintenance cover 12. By correspondingly inserting the first claws 70 into the first card slots 50 and correspondingly inserting the second claws into the second card slots 60, the maintenance cover 12 and the first shell 111 can be snapped together. The structure is simple, the installation is convenient, and the assembly efficiency is improved.

[0046] Specifically, the installation form of the maintenance cover 12 in the present application is a horizontal push mode. That is to say, the maintenance cover 12 can be pushed from one side of the first shell 111 to the other side along the second direction. In this process, the first claw 70 is first inserted into the first slot 50 and the first claw 70 is located on the inner circumference of the second rib 40. Then, the second claw is inserted into the second slot 60 and the second claw is located on the outer circumference of the second rib 40. Such a setting can not only realize the buckling of the maintenance cover 12 and the first shell 111, but also enable the first rib 122 to be located on the outer circumference of the second rib 40, thereby improving the waterproof performance of the housing assembly 10.

[0047] Optionally, the first card slot 50, the second card slot 60, the first claw 70 and the second claw in the present application may include one, two, three or more than three, and the present application does not make specific limitations. That is to say, when there is one first card slot 50 and one second card slot 60, there are one first claw 70 and one second claw; when there are two first card slots 50 and two second card slots 60, there are two first claws 70 and two second claws, and so on. Figure 1 as well as Fig.10 The figure shows a case where there are four first clamping grooves 50 , four first clamping claws 70 , four second clamping grooves 60 , and four second clamping claws.

[0048] Furthermore, in an embodiment not shown in the present application, a first card slot 50 and a second card slot 60 may be provided on the maintenance cover 12 , and a first claw 70 and a second claw may be provided on the second rib 40 , thereby achieving the buckling of the maintenance cover 12 with the first shell 111 .

[0049] Further, in order to increase the tight fixation between the maintenance cover 12 and the first housing 111, see Figure 1 , Figure 6 Fig.10 As shown, in this embodiment, a plurality of limiting hooks 100 are arranged on the first side 1201 of the cover body 121 close to the maintenance cover 12, a plurality of limiting posts 90 are arranged in the accommodating gap 1110, and the plurality of limiting hooks 100 are hooked on the plurality of limiting posts 90 one by one. Specifically, a plurality of limiting posts 90 are arranged in the accommodating gap 1110, a plurality of limiting hooks 100 are arranged at corresponding positions of the cover body 121 of the maintenance cover 12, and the limiting hooks 100 are hooked on the limiting posts 90. In this way, after the maintenance cover 12 is buckled with the first housing 111 by the first claw 70, the second claw, the first slot 50 and the second slot 60, the limiting hooks 100 and the limiting posts 90 cooperate with each other to achieve a tight fixation of the two.

[0050] Optionally, the limiting posts 90 in the present application may include one, two, three or more than three, and the limiting hooks 100 may include one, two, three or more than three, which are not specifically limited in the present application. Figure 1 And attached Fig.10 The figure shows a situation where there are five limiting posts 90 and five limiting hooks 100 .

[0051] Furthermore, since the maintenance cover 12 is pushed from one side of the first housing 111 to the other side in a horizontal manner, in order to prevent the first claw 70 of the maintenance cover 12 from being disengaged from the first slot 50 and the second claw from being disengaged from the second slot 60 during use, see Figures 9 and 10 As shown, in this embodiment, an elastic stopper 110 is further provided on the cover body 121, and a protruding section 120 is further provided on the housing 11, and the elastic stopper 110 abuts against the protruding section 120. That is to say, when the first claw 70 and the second claw are respectively engaged with the first slot 50 and the second slot 60, the elastic stopper 110 will abut against the protruding section 120, so that the first claw 70 and the second claw are prevented from being separated from the first slot 50 and the second slot 60 respectively due to the retreat of the maintenance cover 12, thereby improving the stability of the overall structure of the housing assembly 10.

[0052] Furthermore, in order to further enhance the tight fixation between the first housing 111 and the maintenance cover 12, see Figure 1 as well as Fig.10As shown, the housing assembly 10 in this embodiment further includes a locking stopper 130, a first mounting hole 1111 adapted to the locking stopper 130 is provided on the housing 11, a second mounting hole 123 adapted to the locking stopper 130 is provided on the maintenance cover 12, the first mounting hole 1111 and the second mounting hole 123 are communicated, and the locking stopper 130 is detachably inserted in the first mounting hole 1111 and the second mounting hole 123. That is to say, after the maintenance cover 12 is buckled with the first housing 111 through the first claw 70 and the first slot 50, the second claw and the second slot 60, and the limiting hook 100 and the limiting column 90, the locking stopper 130 is installed on the first mounting hole 1111 and the second mounting hole 123 to achieve a tight fixation of the two, and the installation and disassembly of the locking stopper 130 are relatively convenient, which improves the assembly efficiency, reduces the difficulty of production and assembly, and reduces the probability of loss of disassembled parts during maintenance. At the same time, in this embodiment, the maintenance cover 12 can be connected to the first shell 111 through a locking and retaining member 130. The number of locking and retaining members 130 is small, which greatly reduces the disassembly and assembly process and time.

[0053] Specifically, the locking and retaining member 130 in this embodiment may include screws, and may also include structures such as studs. As long as other deformation methods are based on the concept of this application, they are within the protection scope of this application.

[0054] Furthermore, an overflow port is provided on one of the housing 11 and the maintenance cover 12 (the overflow port is not shown in the drawings). That is to say, the overflow port in the present application can be provided on the housing 11 or on the maintenance cover 12, as long as it can ensure that the external water flows to the overflow port through the drainage groove 30 and then is transported to the outside of the housing assembly 10 through the overflow port.

[0055] Specifically, the assembly process of the housing assembly 10 of the present application is as follows:

[0056] First, the first shell 111 and the second shell 112 are fixedly connected to form the outer shell 11 as a whole; then, along the second direction, the maintenance cover 12 is horizontally pushed from one side of the first shell 111 to the other side by horizontally pushing. During this process, the first claw 70 is first inserted into the first slot 50, and the limiting hook 100 is hooked on the limiting column 90, and then the second claw is inserted into the second slot 60; after the maintenance cover 12 and the outer shell 11 are aligned, the locking stop member 130 is inserted into the first mounting hole 1111 and the second mounting hole 123 to achieve the installation and fixation of the maintenance cover 12 and the outer shell 11.

[0057] In summary, the housing assembly of the present application has the following advantages:

[0058] (1) The drainage groove provided in the present application can receive water infiltrated from the outside, and drain the water to the overflow port, and then flow out from the overflow port, thereby preventing water from entering the electrical room and avoiding adverse effects on the heating components, thereby improving the waterproof performance of the housing assembly, thereby ensuring the normal operation of the water heater and improving the safety of the water heater to a certain extent;

[0059] (2) The second convex rib is provided to resist external water overflowing from the drainage groove, thereby further improving the waterproof performance of the housing assembly;

[0060] (3) The maintenance cover and the housing can be tightly fixed by the first claw and the first slot, the second claw and the second slot, and the limit hook and the limit column;

[0061] (4) The provision of the elastic stopper can prevent the first claw from being disengaged from the first slot and the second claw from being disengaged from the second slot, thereby effectively ensuring the stability of the overall structure of the housing assembly.

[0062] On the other hand, the embodiment of the present application further provides a water heater, which includes the above-mentioned housing assembly, and thus the water heater includes all the technical effects of the above-mentioned housing assembly. Since the technical effects of the housing assembly have been described in detail above, they will not be repeated here.

[0063] Further, see Figure 1 As shown, the water heater in this embodiment further includes an inner tank 140 and a heating element 150 . The inner tank 140 is disposed in the accommodating space 1103 , and the heating element 150 is disposed in the accommodating cavity 1101 .

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A housing assembly (10), the housing assembly (10) being used for a water heater, the housing assembly (10) being provided with an overflow port, characterized in that: The housing assembly (10) comprises: A housing (11), wherein a housing cavity (1101) and an opening (1102) are provided on the housing (111), the housing cavity (1101) being in communication with the opening (1102), and the housing cavity (1101) being at least used for installing a heating element (150); A maintenance cover (12), the maintenance cover (12) comprising a cover body (121) and a first convex rib (122), the first convex rib (122) being circumferentially arranged along the outer edge of the cover body (121), the cover body (121) being detachably inserted into the opening (1102) via the first convex rib (122), a drainage groove (30) being arranged at one end of the first convex rib (122) close to the cover body (121), the drainage groove (30) being connected to the overflow port so as to at least drain water to the overflow port and flow to the outside of the housing assembly (10) through the overflow port.

2. The housing assembly (10) according to claim 1, characterized in that: Along a first direction, the drainage groove (30) extends from a first side (1201) of the maintenance cover (12) to a second side (1202) of the maintenance cover (12).

3. The housing assembly (10) according to claim 1, characterized in that: The depth of the drainage groove (30) along the inner and outer directions of the opening (1102) is less than the thickness of the first convex rib (122) along the inner and outer directions of the opening (1102).

4. The housing assembly (10) according to claim 1, characterized in that: The housing (11) comprises a first shell (111) and a second shell (112); the first shell (111) and the second shell (112) are fixedly connected and enclosed to form a receiving space (1103); the receiving space (1103) is at least used to install an inner tank (140) of the water heater; the first shell (111) has the receiving cavity (1101) and the opening (1102); A second convex rib (40) is provided on the first shell (111), and the second convex rib (40) is arranged in the accommodating cavity (1101) along the circumference of the first shell (111), and an accommodating gap (1110) is provided between the second convex rib (40) and the outer edge of the first shell (111) for inserting the first convex rib (122).

5. The housing assembly (10) according to claim 4, characterized in that: Along the second direction, a plurality of first clamping grooves (50) and a plurality of second clamping grooves (60) are arranged at intervals on opposite sides of the second convex rib (40); a plurality of first clamping claws (70) are arranged on the cover body (121); a plurality of second clamping claws (80) are arranged on the second convex rib (40); the plurality of first clamping claws (70) are inserted into the plurality of first clamping grooves (50) one by one, and the plurality of second clamping claws (80) are inserted into the plurality of second clamping grooves (60) one by one.

6. The housing assembly (10) according to claim 5, characterized in that: A plurality of limit hooks (100) are arranged on a first side (1201) of the cover body (121) close to the maintenance cover (12), a plurality of limit posts (90) are arranged in the accommodating gap (1110), and the plurality of limit hooks (100) are hooked on the plurality of limit posts (90) in a one-to-one correspondence.

7. The housing assembly (10) according to claim 1, characterized in that: The cover body (121) is also provided with an elastic stopper (110), and the outer shell (11) is also provided with a protruding section (120), and the elastic stopper (110) abuts against the protruding section (120).

8. The housing assembly (10) according to any one of claims 1 to 7, characterized in that: The housing assembly (10) further comprises a locking stop member (130); the housing (11) is provided with a first mounting hole (1111) adapted to the locking stop member (130); the maintenance cover (12) is provided with a second mounting hole (123) adapted to the locking stop member (130); the first mounting hole (1111) and the second mounting hole (123) are connected; the locking stop member (130) is detachably inserted into the first mounting hole (1111) and the second mounting hole (123).

9. The housing assembly (10) according to any one of claims 1 to 7, characterized in that: The overflow port is provided on one of the housing (11) and the maintenance cover (12).

10. A water heater, characterized in that: The water heater comprises a shell assembly (10) as claimed in any one of claims 1 to 9, and further comprises an inner tank (140) and a heating element (150), wherein the inner tank (140) is arranged in a receiving space (1103), and the heating element (150) is arranged in a receiving cavity (1101).

Images