Electric water heater

Abstract

This utility model relates to an electric water heater, which includes a shell, an inlet and outlet pipe assembly, a power cord, and an outer cover. The inlet and outlet pipe assembly includes an inlet pipe group and an outlet pipe group, with the inlet pipe group connected to the inlet port and the outlet pipe group connected to the outlet port. The power cord is used to supply power to the control components or heating elements. The outer cover is detachably connected to the bottom of the shell and has a positioning part. The positioning part has a detachable part detachably connected to it. The inlet pipe group and / or the outlet pipe group and / or the power cord extend to the outside of the shell through the positioning part. The outer cover partially covers the power cord, the inlet pipe group, and the outlet pipe group, resulting in a neater and more aesthetically pleasing appearance. Furthermore, by covering the connection points between the power cord, the inlet pipe group, and the outlet pipe group and the shell, it also improves dust and water resistance, enhances safety, and helps extend the service life of the electric water heater.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, and in particular relates to an electric water heater. Background Technology

[0002] Water heaters are common household appliances in people's daily lives. They are installed and heated in three ways: gas water heaters, solar water heaters, and electric water heaters. Electric water heaters are widely used because of their wide range of applications, convenient installation, and low operating noise.

[0003] The installation location of electric water heaters is not fixed due to differences in the location of user-reserved sockets and water lines. The external power supply and water pipes are complex to lay out and have poor aesthetics. In addition, the connection points of the power supply, inlet and outlet pipes to the outer casing are exposed, resulting in poor dust and water protection, lower safety, and affecting the service life of the electric water heater. Utility Model Content

[0004] The purpose of this utility model is to provide an electric water heater that solves the problems of messy power supply lines and water pipes, poor aesthetics, and exposed connection points between the power supply lines, water pipes and the outer casing, resulting in poor dust and water resistance in existing electric water heaters.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] This application discloses an electric water heater, comprising:

[0007] The outer casing has an internal mounting cavity formed therein, and an inlet port and an outlet port are formed on the outer casing;

[0008] A water inlet and outlet pipe assembly, comprising an inlet pipe assembly and an outlet pipe assembly, wherein the inlet pipe assembly is connected to the inlet port and the outlet pipe assembly is connected to the outlet port;

[0009] Power cord, used to supply power to control components or heating elements;

[0010] An outer cover is detachably connected to the lower part of the outer casing. A positioning part is formed on the outer cover, and a detachable part is detachably connected to the positioning part. The water inlet pipe assembly and / or the water outlet pipe assembly and / or the power cord extend to the outside of the outer casing through the positioning part.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are:

[0012] The electric water heater involved in this application has an outer cover at the bottom of the outer shell. The outer cover has a positioning part. The positioning part is detachably connected to a detachable part through a connecting dot. The detachable part can be removed along the connecting dot, which facilitates the adjustment of the power cord, water inlet pipe or water outlet pipe into the corresponding positioning part according to the position of the socket, water supply pipe and water terminal during installation.

[0013] This outer casing can partially cover the power cord, water inlet pipe assembly, and water outlet pipe assembly, resulting in a neater and more aesthetically pleasing appearance. Furthermore, by covering the connection points between the power cord, water inlet pipe assembly, and water outlet pipe assembly and the outer casing, it can also improve dust and water resistance, enhance safety, and extend the lifespan of the electric water heater.

[0014] In some embodiments of this application, the outer casing includes a first casing and a second casing disposed at opposite ends, the second casing being located at the rear side of the outer casing, and a mounting recess being provided at the bottom of the second casing, the outer cover being detachably connected to the mounting recess.

[0015] The outer cover is connected to the mounting recess so that the outer wall of the outer cover is flush with the outer wall of the outer shell, resulting in a stronger overall integrity and avoiding an excessively large overall volume.

[0016] In some embodiments of this application, the outer cover includes a protective horizontal portion and protective vertical portions formed on both sides of the protective horizontal portion. The protective vertical portions on both sides are detachably connected to the mounting recess, and the outer wall of the protective vertical portion is flush with the outer wall of the second housing.

[0017] The outer cover is U-shaped, with the protective uprights located on both sides of the protective horizontals. The outer cover is installed in the assembly recess via the protective uprights. Power cords, water inlet pipes, or water outlet pipes can be connected from the protective uprights or the protective horizontals as needed.

[0018] In some embodiments of this application, the outer cover includes a connecting front end near the first housing and a protective rear end away from the second housing, the positioning part is disposed on the protective horizontal part and / or the protective vertical part, and each of the positioning parts is disposed on the protective rear end.

[0019] The positioning part is located at the rear of the protection unit, which facilitates the disassembly of the detachable part and allows operators to insert the power cord, water inlet pipe assembly or water outlet pipe assembly into the corresponding positioning part, making the operation convenient and more efficient.

[0020] In some embodiments of this application, the protective upright is provided with a first positioning part and a second positioning part from top to bottom along the height direction. The size of the first positioning part is smaller than that of the second positioning part. The first positioning part is detachably connected to a first detachable part through a connecting dotted part, and the second positioning part is detachably connected to a second detachable part through a connecting dotted part.

[0021] The power cord extends to the outside of the outer casing via the first positioning part, one of the water inlet pipe assembly and the water outlet pipe assembly extends to the outside of the outer casing via the second positioning part, and the other of the water inlet pipe assembly and the water outlet pipe assembly extends to the outside of the outer casing via the positioning part on the protective horizontal part.

[0022] The first positioning part is used for the power cord to pass through. Its size is smaller than that of the second positioning part used for the water inlet or outlet pipe assembly, resulting in better positioning and ensuring that the power cord is connected from the top of the water inlet or outlet pipe assembly. This avoids water leakage in the water inlet or outlet pipe assembly from causing safety hazards, thus enhancing safety.

[0023] In some embodiments of this application, a first snap-fit ​​portion is provided in the assembly recess, a snap-fit ​​surface is formed on the first snap-fit ​​portion, and a first latching portion is formed on the protective stand. The first latching portion snaps onto the snap-fit ​​surface to achieve a detachable connection between the outer cover and the second housing.

[0024] The protective uprights on both sides of the outer cover are connected to the assembly recess by snap-fit, which makes installation convenient and quick, reduces the use of fasteners such as screws, and helps to ensure the integrity and sealing effect of the outer shell. The connection between the first snap-fit ​​part and the first snap-fit ​​part realizes the vertical connection and positioning of the outer cover.

[0025] In some embodiments of this application, a guide rail portion is formed in the mounting recess, a guide portion is formed at the rear end of the protective upright portion, a guide groove portion is formed between the guide portion and the protective upright portion, and the guide groove portion is movably connected to the guide rail portion to provide guidance for the connection of the first snap-fit ​​portion and the first snap-fit ​​portion.

[0026] The outer cover is installed into the assembly recess from bottom to top. During the installation process, the guide groove is connected to the guide rail and moves upward along the guide rail until the first snap-fit ​​part is engaged with the first snap-fit ​​part, which facilitates the positioning of the outer cover, ensures accurate installation, and improves installation efficiency.

[0027] In some embodiments of this application, the connecting front end of the protective horizontal section is provided with a plurality of second latching parts, the second latching parts are spaced apart along the length direction of the protective horizontal section, and the bottom of the second housing is provided with a second snap-fit ​​part corresponding to each of the second latching parts, the second latching parts snap-fit ​​onto the corresponding second snap-fit ​​part.

[0028] The protective horizontal part is fixed to the bottom of the second housing through the second buckle part, realizing the connection and fixation of the bottom of the outer cover. During installation, as the outer cover moves upward, the second buckle part snaps onto the second snap-fit ​​part, and is connected and fixed synchronously with the first buckle part.

[0029] In some embodiments of this application, the bottom of the second housing is provided with a plurality of upwardly extending connecting recesses, and each of the second snap-fit ​​portions is disposed in the corresponding connecting recess; some of the connecting recesses are also provided with abutting mating portions, and an installation gap is formed between the abutting mating portions and the second snap-fit ​​portions, and the abutting portions and the corresponding second snap-fit ​​portions are connected to the installation gap, so that the second snap-fit ​​portions are snapped onto the second snap-fit ​​portions.

[0030] As the outer cover is assembled upwards, the abutting part and the second snap-fit ​​part connect to the installation gap. In the horizontal direction, the front and rear of the outer cover are limited, improving the stability of the connection of the outer cover and preventing the second snap-fit ​​part from coming off the second snap-fit ​​part.

[0031] In some embodiments of this application, at least one end of the outer shell is provided with an end cap, and a third snap-fit ​​portion is also formed on the end cap or the outer wall of the outer shell. A third latching portion is also provided on the protective upright portion, and the third latching portion is snapped onto the corresponding third snap-fit ​​portion.

[0032] The third snap-fit ​​part and the first snap-fit ​​part work together to improve the stability of the outer cover installation.

[0033] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0034] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an overall diagram of one embodiment of the electric water heater proposed in this utility model;

[0036] Figure 2 yes Figure 1 A disassembled diagram of an electric water heater;

[0037] Figure 3 This is a diagram showing the end cap component disassembled from the outer casing;

[0038] Figure 4 This is a structural diagram of the outer casing component;

[0039] Figure 5 This is a structural diagram of the first latching part and the guide part;

[0040] Figure 6 This is one of the diagrams for the second shell structure;

[0041] Figure 7 yes Figure 6 Enlarged view of point A in the image;

[0042] Figure 8 This is a structural diagram of the first latching part, the guide rail part, and the third latching part;

[0043] Figure 9 This is the second diagram of the second shell structure;

[0044] Figure 10 yes Figure 9 Enlarged view of point B in the image;

[0045] Figure 11 This is a diagram showing the connection status of the second latching part and the second snap-fit ​​part;

[0046] In the picture,

[0047] 100. Outer shell; 110. First shell; 120. Second shell; 1201. Assembly recess; 121. Water inlet port; 122. Water outlet port; 123. First snap-fit ​​part; 124. Guide rail part; 125. Guide slope; 126. Connecting recess; 127. Second snap-fit ​​part; 128. Abutting mating part; 129. Second connecting protrusion;

[0048] 130. End cap part; 131. End cap recess; 140. Third snap-fit ​​part;

[0049] 200. Inner liner components;

[0050] 300. Outer casing; 301. Connecting front end; 302. Protective rear end;

[0051] 310. Protective horizontal part; 311. Second buckle part; 312. Abutment part;

[0052] 320. Protective upright; 321. Guide section; 3211. Guide horizontal plate; 3212. Guide vertical plate; 322. First latching section; 323. Third latching section; 324. First detachable section; 325. Second detachable section;

[0053] 330. Detachable part; 340. Reinforcing rib; 350. First connecting protrusion;

[0054] 400. Power cord;

[0055] 500. Inlet pipe assembly;

[0056] 600. Water outlet pipe assembly;

[0057] 700, Material stop. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0059] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0063] An electric water heater is a type of water heater that uses electricity as its primary energy source. The high-temperature heat generated after the power is turned on directly heats the water stored in the water heater to produce hot water.

[0064] Electric water heaters typically consist of a water tank, an electric heating element, and an electronic control board. The water tank has a storage cavity to store water to be heated. The electric heating element is inserted into the storage cavity of the water tank. The electronic control board is used to control the electric heating element to operate by turning the power on and off, so that the water in the tank is heated to the set temperature.

[0065] For the water tank of an electric water heater, the tank generally consists of an outer shell and an inner tank, with an insulation layer between them. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse designs; the inner tank can be made of metal or plastic, depending on the needs.

[0066] In addition, the insulation layer formed between the outer shell and the inner liner is commonly made of materials such as asbestos, sponge, foam plastic, and polyurethane foam. In conventional technology, foaming is usually used to form the insulation layer in order to achieve good insulation effect.

[0067] For water tanks with metal inner liner, corrosion can easily occur inside due to water quality. Therefore, magnesium rods are installed on the water tank and inserted into the water storage cavity inside the tank.

[0068] Magnesium has the lowest electrochemical potential among metals and is physiologically non-toxic. Therefore, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protection; the larger the magnesium rod, the better the protection and the longer the protection time.

[0069] The water tank is also equipped with an inlet pipe and an outlet pipe. The inlet pipe is used to deliver cold water into the water storage cavity formed inside the water tank, while the hot water in the water storage cavity is output from the outlet pipe.

[0070] For electric heating components, electric heating methods such as electric heating wires, magnetic energy, or silicon tube heating can be used to heat the water stored in the water storage chamber.

[0071] The control board is used to receive detection signals from relevant sensors (such as water temperature sensors and flow sensors) and control the power supply to and from the electric heating components.

[0072] When the electric water heater is working, the electric control board controls the electric heating element to be powered on and heated. When the water temperature in the tank reaches the set value, the electric control board controls the electric heating element to be powered off.

[0073] refer to Figures 1-2 This utility model proposes an electric water heater, including an outer shell 100, an inner tank 200, an inlet and outlet water pipe assembly, and an outer cover 300, wherein an installation cavity is formed inside the outer shell 100.

[0074] The inner liner 200 is disposed in the mounting cavity, and a heating cavity is formed inside the inner liner 200.

[0075] The inner liner 200 is equipped with a heating element, specifically a heating tube, which is used to heat the water in the heating cavity.

[0076] Combination Figure 6 The outer casing 100 has an inlet port 121 and an outlet port 122. The inlet and outlet pipe assembly includes an inlet pipe group 500 and an outlet pipe group 600. The inlet pipe group 500 is connected to the inlet port 121, and the outlet pipe group 600 is connected to the outlet port 122.

[0077] Specifically, the inlet pipe assembly 500 and the outlet pipe assembly 600 are connected to the inner tank 200 through the outer shell 100. Low-temperature water is input into the inner tank 200 through the inlet pipe assembly 500, and the outlet pipe assembly 600 outputs the heated high-temperature water to the user terminal.

[0078] Additionally, a baffle 700 is provided in the installation cavity. The baffle 700 is connected to one end of the inner liner 200. The side of the baffle 700 away from the inner liner 200 is used to install control components, including circuit boards, temperature control boards and other components.

[0079] At least one end of the housing 100 is provided with an end cap 130, which is detachably connected to the housing 100. The end cap 130 is specifically provided at the end near the stop member 700, and is used to facilitate the installation, maintenance and repair of control components and working parts such as heating elements.

[0080] To address the issue of messy water pipe layout in the power supply line and water inlet pipe assembly 500 and water outlet pipe assembly 600, this application provides an outer cover 300 at the bottom of the outer casing 100. Parts of the power supply line and water inlet pipe assembly 500 and water outlet pipe assembly 600 are hidden by the outer cover 300, resulting in better aesthetics.

[0081] Specifically, in order to position the power supply line, the water inlet pipe assembly 500 or the water outlet pipe assembly 600, the outer cover 300 is provided with a positioning part, and the positioning part is detachably connected to a detachable part.

[0082] Specifically, in some embodiments, the detachable part 30 and the positioning part are detachably connected via a connecting dotted part.

[0083] The inlet pipe assembly 500 and / or the outlet pipe assembly 600 and / or the power cord 400 extend through the positioning part to the outside of the outer casing 100.

[0084] In other words, the positioning part on the outer cover 300 is connected to the detachable part 330 through the connecting dotted part. The connecting dotted part is used to facilitate the removal of the detachable part 330 by the operator during the installation process, and the corresponding water inlet pipe group 500 and / or water outlet pipe group 600 and / or power cord 400 pass through the corresponding positioning part.

[0085] Compared with the prior art, the advantages and positive effects of this utility model are:

[0086] The electric water heater involved in this application has an outer cover 300 below the outer shell 100. The outer cover 300 has a positioning part. The positioning part is detachably connected to a detachable part 330 through a connecting dot. The detachable part 330 can be disassembled along the connecting dot, which facilitates the adjustment of the power cord 400, the inlet pipe assembly 500 or the outlet pipe assembly 600 into the corresponding positioning part according to the position of the socket, water supply pipe and water terminal during installation.

[0087] The outer cover 300 can partially cover the power cord 400, the water inlet pipe assembly 500, and the water outlet pipe assembly 600, resulting in a neater and more aesthetically pleasing appearance.

[0088] In addition, the outer cover 300 shields the connection points of the power cord 400, the water inlet pipe assembly 500, and the water outlet pipe assembly 600 with the outer casing 100, which can improve the dustproof and waterproof effect, enhance safety, and help extend the service life of the electric water heater.

[0089] In some embodiments of this application, the outer shell 100 includes a first shell 110 and a second shell 120 disposed at opposite ends. The second shell 120 is located at the rear side of the outer shell 100, and a mounting recess 1201 is provided at the bottom of the second shell 120. The outer cover 300 is detachably connected to the mounting recess 1201.

[0090] The mounting recess 1201 is formed at the bottom of the second housing 120. The mounting recess 1201 makes the bottom and both sides of the bottom of the second housing 120 form an inward concave structure. The outer cover 300 is connected to the mounting recess 1201. The outer wall of the outer cover 300 is flush with the outer wall of the outer housing 100, which makes the overall structure stronger and avoids the water heater from being too large.

[0091] refer to Figure 4 , Figure 5 In some embodiments of this application, the outer cover 300 is an overall U-shaped shell structure. The outer cover 300 includes a protective horizontal portion 310 and protective vertical portions 320 formed on both sides of the protective horizontal portion 310. The protective horizontal portion 310 and the protective vertical portions 320 on both sides are integrally formed.

[0092] The protective upright part 320 is located on both sides of the protective horizontal part 310, which is located at the bottom of the mounting recess 1201. The power cord 400, the water inlet pipe assembly 500, or the water outlet pipe assembly 600 can be connected from the protective upright part 320 or the protective horizontal part 310 as needed.

[0093] In order to improve the structural stability of the outer cover 300, this application designs multiple reinforcing ribs 340 on the inner wall of the outer cover 300, thereby increasing the overall structural strength of the outer cover 300.

[0094] In some embodiments of this application, the outer cover 300 includes a connecting front end 301 close to the first housing 110 and a protective rear end 302 away from the first housing 110, that is, the connecting front end 301 of the outer cover 300 is located in front of the protective rear end 302.

[0095] The positioning parts are provided on the protective horizontal part 310 and / or the protective vertical part 320, and each positioning part is located at the protective rear end 302.

[0096] The positioning part is located at the rear end of the protective structure 302, which makes it convenient for operators to disassemble the detachable part 330 on the positioning part. It also makes it easier for operators to insert the power cord 400, the water inlet pipe assembly 500 or the water outlet pipe assembly 600 into the corresponding positioning part, making the operation convenient and more efficient.

[0097] In some embodiments of this application, a first positioning part is provided on the protective upright part 320 from top to bottom along the height direction, and a first detachable part 324 is detachably connected to the first positioning part through a connecting dotted part.

[0098] The power cord 400 extends to the outside of the housing 100 via the first positioning part, and the water inlet pipe assembly 500 and the water outlet pipe assembly 600 extend to the outside of the housing 100 via the positioning part on the protective horizontal part 310.

[0099] In some other embodiments of this application, a first positioning part and a second positioning part are provided on the protective upright part 320 from top to bottom along the height direction. The size of the first positioning part is smaller than that of the second positioning part. A first detachable part 324 is detachably connected to the first positioning part through a connecting dotted part, and a second detachable part 325 is detachably connected to the second positioning part through a connecting dotted part.

[0100] The power cord 400 extends to the outside of the housing 100 via the first positioning part, and one of the water inlet pipe assembly 500 and the water outlet pipe assembly 600 extends to the outside of the housing 100 via the second positioning part.

[0101] The inlet pipe assembly 500 and the outlet pipe assembly 600 extend to the outside of the outer casing 100 via a positioning portion on the protective horizontal portion 310, or both the inlet pipe assembly 500 and the outlet pipe assembly 600 extend from the positioning portion on the protective horizontal portion 310 to the outside of the outer casing 100.

[0102] The first positioning part is used for the power cord 400 to pass through. Its size is smaller than that of the second positioning part used for the water inlet pipe group 500 or the water outlet pipe group 600 to pass through. The positioning effect is better, and it ensures that the power cord 400 is connected from the top of the water inlet pipe group 500 and the water outlet pipe group 600. This avoids water leakage in the water inlet pipe group 500 or the water outlet pipe group 600 from causing safety hazards, and the safety is higher.

[0103] The inlet pipe assembly 500 and the outlet pipe assembly 600 can be connected via the second positioning part or via the positioning part on the protective horizontal part 310.

[0104] The specific connection location is determined based on the user's water supply and usage location.

[0105] To reduce wear between the edge of the positioning part and the outer wall of the power cord 400, water inlet pipe assembly 500 or water outlet pipe assembly 600, at least the first positioning part and the second positioning part are designed to be arc-shaped. The arc-shaped first positioning part and the second positioning part can also increase the adjustment position of the corresponding power cord 400, water inlet pipe assembly 500 or water outlet pipe assembly 600, making it more adaptable.

[0106] The outer cover 300 and the outer shell 100 are mainly connected and fixed by snap-fit ​​and fastener connection.

[0107] refer to Figures 6-8 In some embodiments of this application, a first snap-fit ​​portion 123 is provided in the assembly recess 1201. Specifically, the first snap-fit ​​portion 123 is located on both sides of the assembly recess 1201, corresponding to the position of the protective stand 320.

[0108] A snap-fit ​​surface is formed on the first snap-fit ​​portion 123, and a first snap-fit ​​portion 322 is formed on the protective upright portion 320. The first snap-fit ​​portion 322 snaps onto the snap-fit ​​surface to achieve a detachable connection between the outer cover 300 and the second housing 120.

[0109] The protective uprights 320 on both sides of the outer cover 300 are connected to the assembly recess 1201 by snap-fit, which makes installation convenient and quick, reduces the use of fasteners such as screws, and helps to ensure the integrity and sealing effect of the outer shell 100. The connection between the first snap-fit ​​part 322 and the first snap-fit ​​part 123 realizes the vertical connection and positioning of the outer cover 300.

[0110] In some embodiments of this application, a guide rail portion 124 is formed in the mounting recess 1201, a guide portion 321 is formed at the protective rear end 302 of the protective upright portion 320, a guide groove portion is formed between the guide portion 321 and the protective upright portion 320, and the guide groove portion is movably connected to the guide rail portion 124 to provide guidance for the connection of the first snap-fit ​​portion 322 and the first snap-fit ​​portion 123.

[0111] The outer cover 300 is installed from bottom to top into the mounting recess 1201. During the installation process, the guide groove is connected to the guide rail 124 and moves upward along the guide rail 124 until the first snap-fit ​​part 322 snaps into the first snap-fit ​​part 123, which facilitates the positioning of the outer cover 300, ensures accurate installation, and improves installation efficiency.

[0112] In some embodiments, the guide rail portion 124 and the first snap-fit ​​portion 123 may be integrally formed. The bottom of the first snap-fit ​​portion 123 is further formed with a guide slope 125, and a snap-fit ​​end is formed above the first snap-fit ​​portion 322. A mating slope that is adapted to the guide slope 125 is formed on the snap-fit ​​end.

[0113] When the outer cover 300 is installed, the guide groove is connected to the guide rail 124 and moves upward along the guide rail 124. When the first snap-fit ​​part 322 passes the guide slope 125, it expands outward and after passing the guide slope 125, it snaps onto the first snap-fit ​​part 123 under its own restoring force.

[0114] refer to Figure 5 In other embodiments, specifically, the guide portion 321 is L-shaped, including a guide horizontal plate 3211 and a guide vertical plate 3212, with the guide horizontal plate 3211 perpendicular to the protective vertical portion 320.

[0115] For ease of understanding, the end of the guide rail 124 that is close to and parallel to the rear wall of the second housing 120 is defined as the outer end, and the side of the guide rail 124 that is away from the first snap-fit ​​part 123 is defined as the inner side. In the installed state, the guide horizontal plate 3211 is connected to the outer end of the guide rail 124, and the guide vertical plate 3212 is connected to the inner side of the guide rail 124.

[0116] refer to Figures 9-11 In some embodiments of this application, the connecting front end 301 of the protective horizontal part 310 is provided with a plurality of second latching parts 311. The second latching parts 311 are spaced apart along the length direction of the protective horizontal part 310. The bottom of the second housing 120 is provided with a second snap-fit ​​part 127 corresponding to each of the second latching parts 311. The second latching parts 311 snap onto the corresponding second snap-fit ​​part 127.

[0117] The protective horizontal part 310 is fixed to the bottom of the second housing 120 by the second snap-fit ​​part 311, so as to connect and fix the bottom of the outer cover 300. During installation, as the outer cover 300 moves upward, the second snap-fit ​​part 311 snaps onto the second snap-fit ​​part 127 and is synchronously connected and fixed with the first snap-fit ​​part 322.

[0118] In some embodiments of this application, the bottom of the second housing 120 is provided with a plurality of upwardly extending connecting recesses 126, and each second latching part 311 is disposed in the corresponding connecting recess 126.

[0119] In some other embodiments, a contacting part 128 is also provided in part of the connecting recess 126. An installation gap is formed between the contacting part 128 and the second snap-fit ​​part 127. The contacting part 312 and the corresponding second snap-fit ​​part 311 are connected to the installation gap so that the second snap-fit ​​part 311 is snapped onto the second snap-fit ​​part 127.

[0120] As the outer cover 300 is assembled upwards, the abutment part 312 and the second snap-fit ​​part 311 are connected to the installation gap. In the horizontal direction, the front and rear of the outer cover 300 are limited, improving the stability of the connection of the outer cover 300 and preventing the second snap-fit ​​part 311 from coming off the second snap-fit ​​part 127.

[0121] refer to Figure 4 , Figure 8 as well as Figure 9 In some embodiments of this application, a third latching portion 140 is formed on the outer wall of the end cap 130 or the outer shell 100 (specifically the second shell 120), and a third latching portion 323 is provided on the protective upright portion 320, and the third latching portion 323 is latched onto the corresponding third latching portion 140.

[0122] In some embodiments of this application, one end of the outer shell 100 is provided with an assembly port, the end cap 130 is detachably connected to the assembly port, and the protective upright 320 on the corresponding side is partially connected to the outside of the end cap 130.

[0123] The end cap 130 also has an end cap recess 131 at a corresponding position that matches the depth of the mounting recess 1201. A third snap-fit ​​portion 140 is formed on the side wall of the end cap recess 131 that is parallel to the rear wall of the second housing 120, for detachable connection with the third snap-fit ​​portion 323.

[0124] The third latching part 323 located on the other side is directly connected to the second housing 120, specifically, it is connected to the side wall of the mounting recess 1201 that is parallel to the rear wall of the second housing 120.

[0125] The first latching part 322, the second latching part 311, and the third latching part 323 are synchronously connected to the outer casing 100 at different positions of the outer casing 300, which helps to ensure the stability of the installation of the outer casing 300.

[0126] In addition to being secured by snaps, the outer cover 300 also has a first connecting protrusion 350 formed on its protective horizontal portion 310. The first connecting protrusion 350 has a through connecting hole. Correspondingly, a downwardly extending second connecting protrusion 129 is formed at the bottom of the second housing 120. A threaded hole is formed in the second connecting protrusion 129. The front end of the fastening screw passes through the first connecting protrusion 350 and is fixed in the threaded hole in the second connecting protrusion 129, further connecting and securing the outer cover 300.

[0127] Due to the design of the first snap-fit ​​part 322, the second snap-fit ​​part 311 and the third snap-fit ​​part 323, the number of fastening screws used to fix the outer cover part 300 is very small, and the assembly difficulty is small.

[0128] The first housing 110 and the second housing 120 are detachably connected by fasteners. Specifically, the inner side of the first housing 110 is provided with a first fixing part, which is spaced along the periphery of the first housing 110. Each first fixing part has a threaded hole with an opening facing the second housing 120.

[0129] The inner wall of the second housing 120 is provided with a second fixing part that corresponds to the first fixing part, and a through connecting hole is formed on the second fixing part.

[0130] During installation, fastening screws are connected from the outside of the second housing 120 to the second fixing part and the corresponding first fixing part, so as to achieve a detachable connection between the first fixing part and the second fixing part.

[0131] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0132] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0133] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. An electric water heater, characterised in that, include: The outer casing has an internal mounting cavity formed therein, and an inlet port and an outlet port are formed on the outer casing; A water inlet and outlet pipe assembly, comprising an inlet pipe assembly and an outlet pipe assembly, wherein the inlet pipe assembly is connected to the inlet port and the outlet pipe assembly is connected to the outlet port; Power cord, used to supply power to control components or heating elements; An outer cover is detachably connected to the lower part of the outer casing. A positioning part is formed on the outer cover, and a detachable part is detachably connected to the positioning part. The water inlet pipe assembly and / or the water outlet pipe assembly and / or the power cord extend to the outside of the outer casing through the positioning part.

2. The electric water heater according to claim 1, characterized in that, The outer casing includes a first casing and a second casing arranged front to back. The second casing is located on the rear side of the outer casing, and a mounting recess is provided at the bottom of the second casing. The outer cover is detachably connected to the mounting recess.

3. The electric water heater according to claim 2, characterized in that, The outer cover includes a protective horizontal section and protective vertical sections formed on both sides of the protective horizontal section. The protective vertical sections on both sides are detachably connected to the mounting recess, and the outer wall of the protective vertical section is flush with the outer wall of the second housing.

4. The electric water heater according to claim 3, characterized in that, The outer cover includes a connecting front end near the first housing and a protective rear end away from the first housing. The positioning part is disposed on the protective horizontal part and / or the protective vertical part, and each of the positioning parts is disposed on the protective rear end.

5. The electric water heater according to claim 3, characterized in that, The protective upright is provided with a first positioning part and a second positioning part from top to bottom along the height direction. The size of the first positioning part is smaller than that of the second positioning part. The first positioning part is detachably connected to a first detachable part through a connecting dotted part. The second positioning part is detachably connected to a second detachable part through a connecting dotted part. The power cord extends to the outside of the outer casing via the first positioning part, one of the water inlet pipe assembly and the water outlet pipe assembly extends to the outside of the outer casing via the second positioning part, and the other of the water inlet pipe assembly and the water outlet pipe assembly extends to the outside of the outer casing via the positioning part on the protective horizontal part.

6. The electric water heater according to claim 3, characterized in that, The assembly recess is provided with a first snap-fit ​​part, and a snap-fit ​​surface is formed on the first snap-fit ​​part. The protective upright part is formed with a first buckle part, and the first buckle part snaps onto the snap-fit ​​surface to realize the detachable connection between the outer cover and the second housing.

7. The electric water heater according to claim 6, characterized in that, A guide rail is formed in the mounting recess, a guide portion is formed at the rear end of the protective upright, a guide groove is formed between the guide portion and the protective upright, and the guide groove is movably connected to the guide rail to provide guidance for the connection of the first snap-fit ​​portion and the first snap-fit ​​portion.

8. The electric water heater according to claim 3, characterized in that, The front end of the protective horizontal section is provided with a plurality of second latching parts, which are spaced apart along the length of the protective horizontal section. The bottom of the second housing is provided with a second snap-fit ​​part corresponding to each of the second latching parts, and the second latching parts snap onto the corresponding second snap-fit ​​part.

9. The electric water heater according to claim 8, characterized in that, The bottom of the second housing is provided with a plurality of upwardly extending connecting recesses, and each of the second snap-fit ​​portions is disposed in the corresponding connecting recess; some of the connecting recesses are also provided with abutting mating portions, and an installation gap is formed between the abutting mating portions and the second snap-fit ​​portions, and the abutting portions and the corresponding second snap-fit ​​portions are connected to the installation gap, so that the second snap-fit ​​portions are snapped onto the second snap-fit ​​portions.

10. The electric water heater according to claim 3, characterized in that, At least one end of the outer casing is provided with an end cap, and a third snap-fit ​​portion is formed on the end cap or the outer wall of the outer casing. A third latch portion is also provided on the protective upright portion, and the third latch portion snaps onto the corresponding third snap-fit ​​portion.

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