Water heater

Abstract

The utility model relates to a water heater which comprises an outer shell, an inner container assembly, an electricity-proof wall assembly and an induction assembly, the inner container assembly comprises at least one inner container installed in the outer shell, and a heating piece is arranged in the inner container; the electricity-proof wall assembly comprises a cover body arranged on the outer shell, an installation opening is formed in the cover body, and a cover plate is detachably connected to the installation opening. The induction assembly comprises an induction part and a signal part, the induction part is fixed to the cover body, and the signal part is installed on the inner side of the cover plate; wherein the sensing part is electrically connected with the heating part and used for controlling a switch of the heating part, or the sensing part is connected with the prompting part, the prompting part is used for reminding a user to close the heating part, and when the cover plate is in a detached state, the signal part is disconnected with the sensing part, and the sensing part directly or indirectly controls the heating part to be disconnected, so that the heating part is automatically powered off before pollution discharge; damage to the liner caused by continuous heating of the heating piece is prevented, and the safety is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to a water heater. Background Art

[0002] When the water in the water heater tank is heated, some substances in the water, such as calcium bicarbonate and magnesium bicarbonate, may precipitate and form scale. When the water in the tank is heated, the calcium bicarbonate and magnesium bicarbonate dissolved in the water decompose, and the resulting calcium carbonate and magnesium hydroxide are insoluble in water, forming a precipitate in the tank, forming scale.

[0003] A magnesium rod is generally installed in the inner tank of the water heater. Although the magnesium rod can release magnesium ions and reduce the water alkali and scale in the inner tank, scale will still accumulate at the bottom of the inner tank, affecting the quality of the water in the inner tank, causing corrosion to the inner tank and reducing the life of the inner tank. In order to completely discharge the scale deposited in the inner tank, a sewage discharge component needs to be set.

[0004] During the sewage discharge process, due to negligence of the user or operator, the heating element may continue to heat, causing damage to the inner tank, or even the temperature of the discharged sewage may be too high, which may also cause safety hazards. Utility Model Content

[0005] The purpose of the utility model is to provide a water heater to solve the problems existing in the prior art of existing water heaters in the sewage discharge process, such as the possibility of continuous heating of the heating element causing damage to the inner tank, and the excessively high sewage temperature causing safety hazards.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The present application proposes a water heater, which comprises:

[0008] outer shell;

[0009] An inner liner assembly, comprising at least one inner liner installed in the outer shell, wherein a heating element is provided in the inner liner;

[0010] The anti-electric wall assembly comprises a cover body provided on the outer shell, the cover body being provided with a mounting opening, and a cover plate being detachably connected to the mounting opening;

[0011] The sensing component includes a sensing part and a signal part, wherein the sensing part is fixed on the cover body and the signal part is installed on the inner side of the cover plate;

[0012] Wherein, the sensing part is electrically connected to the heating element and is used to control the switch of the heating element, or

[0013] The sensing portion is connected to a prompting member, and the prompting member is used to remind the user to turn off the heating member.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] The water heater involved in the present application is provided with a heating element, and an installation port is provided on the anti-electric wall component, and a cover plate is connected to the installation port. The sensing component includes a sensing part connected to the cover body, and a signal part connected to the signal of the sensing part is provided on the cover plate. When the cover plate is removed, the signal part is disconnected from the sensing part, and the sensing part directly or indirectly controls the heating element to disconnect, so as to realize automatic power-off of the heating element before sewage discharge, thereby preventing the heating element from damaging the inner tank due to continuous heating, and improving safety.

[0016] In some embodiments of the present application, an upward-extending incision is formed on one side of the mounting port, the cover plate is plugged into the mounting port from the side where the incision is located, and an upward-extending bending portion is formed at one end of the cover plate, and the bending portion is adapted to the size of the incision.

[0017] In some embodiments of the present application, supporting inner edges extending toward the mounting port are formed on both sides of the mounting port, and plug-in portions are formed on the corresponding two sides of the cover plate, and plug-in grooves are formed on the plug-in portions, and the supporting inner edges are plugged into the plug-in grooves.

[0018] In some embodiments of the present application, a lap portion is provided at the other end of the cover away from the bent portion, the front side of the lap portion extends to the outside of the cover, and the lap portion is connected to the inner side of the installation opening.

[0019] In some embodiments of the present application, a first fastening portion is further formed on the cover plate, a penetrating fixing hole is formed on the first fastening portion, a second fastening portion extending toward the mounting port is formed on the inner side of the mounting port, a threaded hole is formed on the second fastening portion, and a fastener passes through the fixing hole from bottom to top and is connected to the threaded hole.

[0020] In some embodiments of the present application, a lower support portion is formed on the cover plate, the signal portion is mounted on the lower support portion, an upper support portion is provided on the cover body, and the sensing portion is mounted on the upper support portion.

[0021] In some embodiments of the present application, the upper supporting portion includes two upper clamping upright portions that are arranged opposite to each other, upper buckles are formed on the upper clamping upright portions, and the sensing portion is connected between the upper clamping upright portions through the upper buckles.

[0022] In some embodiments of the present application, the lower support portion includes two lower clamping upright portions arranged opposite to each other, the lower clamping upright portions are provided with lower buckles, and the signal portion is connected between the lower clamping upright portions through the lower buckles.

[0023] In some embodiments of the present application, a sewage discharge assembly is further included, which is located directly above the installation port. The sewage discharge assembly includes a sewage discharge joint and a sewage discharge valve group. The upper end of the sewage discharge joint is connected to the inner tank, and the lower end is connected to the sewage discharge valve group. The sewage discharge valve group is used to connect to an external sewage discharge pipe group.

[0024] In some embodiments of the present application, the sewage valve group includes a valve body, a valve core and a knob part. The upper end of the valve body is connected to the sewage connector, the valve core is connected to the valve body, and the knob part is connected to the valve core for controlling the switch of the sewage valve group.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] Figure 1 This is a schematic diagram of the appearance of the water heater proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the connection between the sewage pipe group and the sewage valve group;

[0029] Figure 3 This is one of the schematic diagrams of the cover structure;

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of point B in FIG.

[0031] Figure 5 Schematic diagram of the connection between the cover body and the cover plate;

[0032] Figure 6 yes Figure 5 The enlarged schematic diagram of point C in FIG.

[0033] Figure 7 Schematic diagram of the cover structure;

[0034] Figure 8 This is the second schematic diagram of the cover structure;

[0035] Figure 9 yes Figure 8 The enlarged schematic diagram of point D in FIG.

[0036] Figure 10 This is the third schematic diagram of the cover structure;

[0037] Figure 11 yes Figure 10 The enlarged schematic diagram of point E in FIG.

[0038] Figure 12 It is a schematic diagram of the internal structure of the water heater;

[0039] Figure 13 yes Figure 12 The enlarged schematic diagram of point F in FIG.

[0040] Figure 14 yes Figure 2 A is an enlarged schematic diagram;

[0041] Figure 15 It is a schematic diagram of the internal cross section of the water heater;

[0042] Figure 16 yes Figure 15 The enlarged schematic diagram of G in FIG.

[0043] Figure 17 It is a cutaway diagram of the sewage discharge assembly;

[0044] Figure 18 It is a schematic diagram of the disassembly of the sewage discharge component;

[0045] Figure 19 It is a schematic diagram of the valve body structure;

[0046] Figure 20 1. It is a schematic diagram of the structure of the knob part;

[0047] Figure 21 Schematic diagram of the adapter structure;

[0048] Figure 22 It is a schematic diagram of the fastener structure;

[0049] Figure 23 Schematic diagram of the protective cover structure;

[0050] Figure 24 It is a schematic diagram of the internal structure of the water heater;

[0051] In the figure,

[0052] 100. Outer shell;

[0053] 200, inner liner assembly; 210, first inner liner; 220, second inner liner;

[0054] 300, water inlet assembly;

[0055] 400, water outlet assembly;

[0056] 500, vent valve assembly;

[0057] 600, sewage discharge assembly; 610, sewage discharge valve group; 611, valve body; 612, valve core; 613, valve shaft; 614, limit fitting portion; 615, buckle portion; 616, valve port;

[0058] 620, adapter; 621, upper connecting portion; 622, lower connecting portion; 6221, sealing protrusion; 623, clamping portion; 6231, clamping groove;

[0059] 630, sewage connection; 631, upper connection; 632, lower connection;

[0060] 640, protective cover body; 641, cover body top surface; 6411, protective opening; 642, cover body periphery; 643, overlapping outer edge; 644, inner limit portion;

[0061] 650, knob portion; 651, operating handle; 652, shaft hole; 653, limit portion;

[0062] 660, bushing; 661, sealing ring; 662, upper extension section; 663, connecting protrusion; 664, connecting section; 665, lower extension section;

[0063] 670, locking member; 671, snap-fitting protrusion;

[0064] 680, sewage pipe;

[0065] 700, anti-electric wall structure; 701, installation opening; 702, incision;

[0066] 710, cover body; 711, upper support portion; 712, upper clamping portion; 713, upper buckle; 714, support inner edge; 715, second fastening portion;

[0067] 720, cover plate; 721, overlap portion; 722, lower support portion; 723, lower clip portion; 7231, lower buckle; 724, plug-in portion; 725, bending portion; 726, first fastening portion;

[0068] 730, sensing unit; 740, signal unit;

[0069] 800. Heating element; 810. Magnesium rod. DETAILED DESCRIPTION

[0070] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0071] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate 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.

[0072] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0075] refer to Figure 1 、 Figure 2 as well as Figure 24 The present application proposes a water heater, which specifically includes an outer shell 100 and an inner tank assembly 200. An installation cavity is formed in the outer shell 100, and a first end cover and a second end cover are respectively provided at both ends of the outer shell 100 for sealing the two ends of the outer shell 100.

[0076] The sewage discharge assembly 600 is connected to the bottom of the inner liner assembly 200 and is used to discharge impurities such as scale deposited in the inner liner assembly 200.

[0077] The liner assembly 200 is disposed in the installation cavity. The liner assembly 200 includes at least one liner, and a heating cavity is formed in the liner.

[0078] In some embodiments of the present application, the water heater is a double-tank water heater, including a first inner tank 210 and a second inner tank 220 arranged in parallel.

[0079] That is, the first inner liner 210 and the second inner liner 220 are both arranged horizontally, the first inner liner 210 is located above the second inner liner 220, and the first inner liner 210 and the second inner liner 220 are connected by an intermediate channel for the water in the first inner liner 210 and the second inner liner 220 to circulate between each other.

[0080] Specifically, a first heating cavity is formed in the first inner liner 210, a second heating cavity is formed in the second inner liner 220, and an intermediate channel is provided between the first inner liner 210 and the second inner liner 220 for connecting the first heating cavity and the second heating cavity.

[0081] A heating element 800 and a magnesium rod 810 are provided in each of the first heating cavity and the second heating cavity. The heating element 800 is used to heat the water in the corresponding heating cavity.

[0082] The magnesium rod 810 can release magnesium ions to reduce the water alkali and scale in the inner tank. However, after long-term use, impurities such as scale will still form in the heating cavity and accumulate at the bottom of the heating cavity.

[0083] The inner tank assembly 200 is connected to a water inlet assembly 300 and a water outlet assembly 400 , and both the water inlet assembly 300 and the water outlet assembly 400 are connected to the heating cavity from the side walls of the outer shell 100 and the second inner tank 220 .

[0084] The water inlet assembly 300 includes a water inlet joint and a water inlet pipe. The water inlet joint is connected to the second inner liner 220 . The water inlet pipe is connected to the water inlet joint. The water outlet end of the water inlet pipe extends to the lower position of the second inner liner 220 .

[0085] The water outlet assembly 400 includes a water outlet joint and a water outlet pipe. The water outlet joint is connected to the second inner tank 220. The water outlet pipe is connected to the water outlet joint. The water inlet end of the water outlet pipe extends through the middle channel to the upper position of the first inner tank 210.

[0086] In order to completely remove impurities in the heating cavity, the present application sets a sewage discharge component 600 at the bottom of the water heater.

[0087] The sewage discharge assembly 600 is specifically connected to the lowest position of the side wall of the second inner container 220 to achieve complete discharge of water and impurities in the first inner container 210 and the second inner container 220.

[0088] Combine Figure 3 In some embodiments of the present application, an anti-electrical wall structure 700 is further provided at the bottom of the outer shell 100 . The anti-electrical wall structure 700 includes a cover body 710 , and a mounting opening 701 is formed on the cover body 710 .

[0089] The sewage pipe group is configured to be connected to the sewage valve group 610 from the installation port 701. The installation port 701 is located directly below the sewage valve group 610 to facilitate operators to install and remove the sewage pipe group.

[0090] Combine Figure 1 、 Figure 12 、 Figure 13 A cover plate 720 is detachably connected to the installation port 701. When the water heater needs to drain sewage, the cover plate 720 is removed from the installation port 701. Then, the sewage pipe group is installed on the sewage valve group 610 from the installation port 701. The knob is operated to open the sewage valve group 610 to discharge the sewage in the heating cavity.

[0091] An induction component is also provided on the anti-electric wall structure 700 , and the induction component includes a sensing part 730 and a signal part 740 . The sensing part 730 is fixed on the cover 710 and is located beside the installation opening 701 , and the signal part 740 is installed on the inner side of the cover plate 720 .

[0092] The sensing portion 730 is electrically connected to the heating element 800 and is used to control the switching of the heating element 800 .

[0093] That is, when the cover plate 720 is installed, the sensing portion 730 is connected to the signal portion 740 , and the sensing portion 730 turns on the heating element 800 .

[0094] When the cover plate 720 is removed, the sensing portion 730 is disconnected from the signal portion 740 , the sensing portion 730 is powered off, and the heating element 800 is also powered off.

[0095] Alternatively, the sensing portion 730 is connected to a prompting element, which is used to remind the user to turn off the heating element 800.

[0096] Specifically, the sensing part 730 is connected to the prompt part signal through the control system. When the signal part 740 is within the travel range of the sensing part 730, that is, the sensing part 730 and the signal part 740 are in a connected state, the sensing part 730 is in a powered state, and the control system controls the prompt part to be in a closed state.

[0097] When the signal part 740 is removed along with the cover plate 720, the signal part 740 is disconnected from the sensing part 730, the sensing part 730 is powered off, and the control system controls the prompt part to turn on, and reminds the user to manually turn off the heating part 800 through sound or light prompt effects.

[0098] Specifically, when the cover plate 720 is removed, the drain valve group 610 is connected to the drain pipe group at the installation port 701. As the cover plate 720 is removed, the signal part 740 cuts off the power supply of the heating element 800, so that the heating element 800 is powered off, avoiding continued heating of the water in the heating cavity and creating a safety hazard.

[0099] In addition to directly controlling the power on and off of the heating element 800, the sensing unit 730 can also be connected to an external prompt element.

[0100] The prompting element may be an alarm light or an alarm bell, which uses sound and light to remind the operator to manually turn off the heating element 800.

[0101] The following describes the specific installation method of the 720 cover plates:

[0102] refer to Figure 10 、 Figure 11 The installation opening 701 is formed on the lower side of the anti-electrical wall structure 700 , and an upwardly extending cutout 702 is formed on one side of the installation opening 701 . The cover plate 720 is plugged into the installation opening 701 from the side where the cutout 702 is located.

[0103] Combine Figure 7-Figure 9 One end of the cover plate 720 is formed with a bent portion 725 extending upward, and the bent portion 725 is adapted to the size of the incision 702.

[0104] Taking the installation direction of the cover plate 720 as the first direction, the second direction is perpendicular to the first direction in the horizontal plane.

[0105] Along the second direction, support inner edges 714 extending toward the mounting opening 701 are respectively formed on both sides of the mounting opening 701 .

[0106] The inner support edge 714 on the same side of the installation opening 701 can be continuous or discontinuous.

[0107] Insertion portions 724 are formed on corresponding sides of the cover plate 720 , and insertion grooves are formed on the insertion portions 724 , and the support inner edge 714 is inserted into the insertion grooves.

[0108] In some embodiments of the present application, a lap portion 721 is provided at the other end of the cover plate 720 away from the bending portion 725, and the front side of the lap portion 721 extends to the outside of the cover plate 720. When the cover plate 720 is installed, the lap portion 721 is connected to the inner side of the installation port 701.

[0109] The cover plate 720 is preliminarily connected and positioned by the plug-in portion 724 and the overlap portion 721 . In order to further improve the connection stability of the cover plate 720 , the cover plate 720 and the cover body 710 are further fixed by fasteners.

[0110] Specifically, a first fastening portion 726 is formed on the cover plate 720, and a fixing hole is formed through the first fastening portion 726. A second fastening portion 715 extending toward the mounting port 701 is formed on the inner side of the mounting port 701, and a threaded hole is formed on the second fastening portion 715. The fastener passes through the fixing hole from bottom to top and is connected in the threaded hole.

[0111] The sensing component can be a proximity switch, also known as a proximity sensor, which is a position switch that can be operated without direct mechanical contact with the moving parts. When the signal part 740 approaches the sensing surface of the sensing part 730 to the action distance, the sensing part 730 can be switched without mechanical contact or applying any pressure, thereby controlling the action of the heating element 800 or the prompt element.

[0112] Reference 3- Figure 9 , 12, Figure 13 In order to facilitate installation, the sensing unit 730 and the signal unit 740 are fixed to the cover body 710 and the cover plate 720 by snap-fitting.

[0113] Specifically, a lower support portion 722 is formed on the cover plate 720 , the lower support portion 722 is located on the inner surface of the cover plate 720 , the signal portion 740 is mounted on the lower support portion 722 , an upper support portion 711 is provided on the cover body 710 , and the sensing portion 730 is mounted on the upper support portion 711 .

[0114] The sensing part 730 and the signal part 740 can be arranged up and down, that is, the installation position of the upper support part 711 is located directly above the installation opening 701, and the sensing surface on the sensing part 730 faces downward. In the installed state, the signal part 740 is located directly above the sensing part 730.

[0115] Alternatively, the sensing portion 730 and the signal portion 740 may also be arranged at an angle, for example, the sensing surface of the sensing portion 730 is arranged vertically.

[0116] In an embodiment where the sensing portion 730 and the signal portion 740 are arranged up and down, the upper support portion 711 includes two upper clamping portions 712 arranged opposite to each other, and an upper buckle 713 is formed on the upper clamping portion 712. The sensing portion 730 is connected between the upper clamping portions 712 through the upper buckle 713.

[0117] The sensing portion 730 is installed between the upper clamping portions 712 from bottom to top and is limited by the upper buckle 713 .

[0118] The lower support portion 722 includes two lower clamping upright portions 723 arranged opposite to each other. The lower clamping upright portions 723 are provided with lower buckles 7231 . The signal portion 740 is connected between the lower clamping upright portions 723 via the lower buckles 7231 .

[0119] The signal portion 740 is installed from top to bottom between the lower engaging portions 723 and is limited in position by the lower buckle 7231 .

[0120] The water heater sewage discharge process specifically includes the following steps:

[0121] Open the cover 710 on the anti-electrical wall structure 700, connect the sewage pipe assembly to the sewage valve assembly 610, and directly or indirectly cut off the power to the heating element 800 through the induction component.

[0122] At the same time, the water inlet valve on the water inlet assembly 300 is closed to stop water from entering the heating cavity.

[0123] Open the water outlet valve on the water outlet assembly 400 to discharge the water in the heating cavity above the liquid level of the water inlet port of the water outlet pipe and the water in the water outlet assembly 400.

[0124] The vent valve assembly 500 is opened, and the air flow channel is connected to the water outlet channel in the emptied water outlet pipe through the control unit 510, so that the air pressure in the heating cavity is balanced with the external air pressure.

[0125] Finally, the knob portion 650 on the sewage valve assembly 610 is opened to discharge the sewage in the heating cavity.

[0126] Specifically, refer to Figures 14-18The sewage discharge assembly 600 specifically includes a sewage discharge joint 630, a sewage discharge valve group 610 and a sewage discharge pipe group. The sewage discharge joint 630 is used to connect with the inner tank. Specifically, the sewage discharge joint 630 is connected to the side wall of the second inner tank 220.

[0127] The sewage valve group 610 includes a valve body 611, a valve core 612 and a knob part 650. The valve core 612 is connected to the valve body 611. The knob part 650 is connected to the valve core 612. The knob part 650 is used to control the rotation position of the valve core 612 relative to the valve body 611 to control the on and off of the sewage valve group 610.

[0128] The sewage pipe assembly includes an adapter 620 and a sewage pipe 680 connected to the adapter 620 .

[0129] Among them, the upper end of the valve body 611 is connected to the sewage connector 630, a snap-fit portion 615 is formed on the outer wall of the valve body 611, and a snap-fit portion 623 is formed on the adapter 620. The snap-fit portion 623 is connected to the snap-fit portion 615 by rotating snap-fit.

[0130] When sewage needs to be discharged, the user or operator connects the sewage pipe 680 to the sewage valve group 610, rotates the knob part 650 to the open position, and discharges the water in the heating cavity through the sewage valve group 610 and the sewage pipe group.

[0131] Specific, combined Figure 21 The adapter 620 includes an upper connecting portion 621 and a lower connecting portion 622 , and the upper connecting portion 621 and the lower connecting portion 622 are integrally formed.

[0132] The adapter 620 is connected to the lower end of the valve body 611 through the upper connecting portion 621 . The inner wall size of the upper connecting portion 621 is adapted to the outer wall size of the valve body 611 , and the upper connecting portion 621 is sleeved on the outer wall of the valve body 611 .

[0133] A sealing portion is formed between the bottom of the valve body 611 and the upper connecting portion 621 to prevent sewage leakage.

[0134] The clamping portions 623 are formed above the upper connecting portion 621 . There are at least two clamping portions 623 , which are dispersedly arranged along the circumference of the upper connecting portion 621 to improve the stability of the connection.

[0135] The locking portion 615 is disposed on the side wall of the valve body 611 and corresponds one-to-one with the locking portion 623 .

[0136] Specifically, each clamping portion 623 is formed with a clamping groove 6231 with an open side, and along the rotation direction of the adapter 620, each clamping groove 6231 is located on the same side of the corresponding clamping portion 623, so that each clamping groove 6231 can be synchronously connected or separated with the corresponding buckle portion 615.

[0137] During installation, the upper connecting portion 621 is sleeved on the outer wall of the valve body 611 , with the snap portion 615 located on one side of the snap portion 623 . The adapter 620 is then rotated to connect the snap groove 6231 with the corresponding snap portion 615 .

[0138] That is, as the adapter 620 rotates, the buckle portion 615 is connected to the clamping groove 6231 , thereby achieving a one-to-one connection between the buckle portion 615 and the clamping portion 623 .

[0139] The sewage discharge component 600 is used to connect with the inner tank to discharge the scale formed in the inner tank, making the sewage discharge more thorough and avoiding the long-term accumulation of scale in the inner tank, which is beneficial to improving the water quality and the service life of the inner tank.

[0140] When discharging sewage, the sewage pipe group is rotated and clamped on the sewage valve group 610, which is beneficial to improving the connection efficiency. When connecting, it is only necessary to put the adapter 620 on the outside of the valve body 611, rotate the adapter 620, and connect the clamping part 623 to the buckle part 615 to realize the connection between the sewage pipe group and the sewage valve group 610. This connection method is simple and convenient to operate, and can avoid the risk of the sewage pipe group falling off under the impact of water flow, and is safer.

[0141] Reference again Figure 19 、 Figure 20 The valve body 611 is a tubular structure as a whole, and a valve chamber with openings at both ends is formed therein. At least part of the valve chamber is spherical. The overall shape of the valve core 612 is similar to a sphere, and the valve core 612 can be rotatably connected in the valve chamber.

[0142] A valve port 616 is formed on the side wall of the valve body 611 . A valve shaft 613 is connected to the knob portion 650 . The valve shaft 613 passes through the valve port 616 and is connected to the valve core 612 .

[0143] The shape of the valve port 616 is circular, and the shape of the valve shaft 613 is non-circular. The valve core 612 and the knob part 650 are respectively formed with an axial hole 652 that is adapted to the shape of the valve shaft 613. The two ends of the valve shaft 613 are respectively connected to the valve core 612 and the knob part 650. When the knob part 650 rotates, the valve core 612 rotates in the valve chamber driven by the valve shaft 613.

[0144] A through channel is formed in the valve core 612. When the valve core 612 rotates until the two ends of the internal channel are respectively connected to the two ends of the valve body 611, the drain valve group 610 is in an open state, and the water in the heating inner cavity can be discharged through the drain joint 630 and the drain valve group 610. Otherwise, the drain valve group 610 is in a closed state.

[0145] In order to limit the rotation range of the knob portion 650 , a limit portion 653 is formed on the knob portion 650 , and a limit matching portion 614 is formed on the outer wall of the valve body 611 .

[0146] In one embodiment, the limiting portion 653 is a convex portion formed on the knob portion 650 and extending toward the side wall of the valve body 611. The limiting fitting portion 614 is two convex portions formed on the side wall of the valve body 611 and extending outward. The limiting portion 653 is located between the two convex portions formed by the limiting fitting portion 614. As the knob portion 650 rotates, the limiting portion 653 moves relative to the limiting fitting portion 614. In the open state, the limiting portion 653 contacts one of the convex portions of the limiting fitting portion 614. In the closed state, the limiting portion 653 contacts the other convex portion in the limiting fitting portion 614.

[0147] In another embodiment, the limiting portion 653 is an arc-shaped groove formed on the knob portion 650 , and the limiting fitting portion 614 is a convex portion formed on the outside of the valve port 616 . The limiting fitting portion 614 is connected to the limiting portion 653 .

[0148] When the drain valve group 610 is in the open state, the knob part 650 rotates until the first end of the limit part 653 contacts and connects with the limit matching part 614. When the drain valve group 610 is in the closed state, the knob part 650 rotates until the second end of the limit part 653 contacts and connects with the limit matching part 614.

[0149] In other words, during the switching process of the knob portion 650, the limiting matching portion 614 thereon moves within the limiting portion 653, and the limiting portion 653 guides and limits the rotation of the rotating portion, so that the opening and closing positions of the valve core 612 are more accurate.

[0150] In some embodiments of the present application, the valve body 611 is a structure with upper and lower openings, and a lining member 660 is provided above the valve body 611. A flow channel running through the lining member 660 is formed in the lining member 660 for connecting the sewage connector 630 and the valve body 611.

[0151] The lining member 660 is mainly used to facilitate the installation of the valve core 612. The opening size on the upper side of the valve body 611 is larger than that on the lower side. During installation, the valve core 612 is first installed into the valve chamber from the upper side of the valve body 611, and then the lining member 660 is connected to the top of the valve body 611 to limit the valve core 612.

[0152] refer to Figure 22 Specifically, the bushing member 660 includes a lower extension section 665 , a connecting section 664 and an upper extension section 662 from bottom to top, and the outer diameter of the connecting section 664 is larger than that of the upper extension section 662 and the lower extension section 665 .

[0153] The connecting section 664 is in contact with the upper end of the valve body 611 , the lower extension section 665 is connected to the inner wall of the valve chamber, and the lower end of the lower extension section 665 is in contact with the valve core 612 , and the upper extension section 662 is inserted into the sewage connector 630 .

[0154] In order to improve the sealing performance of the connection between the lining member 660 and the drain connector 630 , a sealing ring 661 is further provided between the connecting section 664 and the drain connector 630 .

[0155] An external thread is provided on the outer wall of the lower extension section 665 , and an internal thread is formed on the inner wall of the valve chamber. The lower extension section 665 is connected to the valve chamber through the thread.

[0156] refer to Figure 17 The lining member 660 serves to limit the valve core 612. During installation, the valve core 612 is first installed from top to bottom into the valve chamber. Then, the lining member 660 is connected to the top of the valve body 611, and the lower extension section 665 is inserted into the valve body 611, contacting and connecting with the valve core 612, thereby limiting the position of the valve core 612 so that the valve core 612 can rotate in the valve chamber.

[0157] The lining sleeve 660 is connected to the drain connector 630 via a locking piece 670. The lower end of the locking piece 670 is formed with an inwardly extending snap-fitting protrusion 671. The outer wall of the connecting section 664 is also formed with an outwardly extending connecting protrusion 663. The snap-fitting protrusion 671 is snapped to the lower end of the connecting protrusion 663. The upper end of the locking piece 670 is threadedly connected to the outer wall of the drain connector 630.

[0158] Specifically, the sewage connector 630 includes an upper connector 631 connected to the inner container and a lower connector 632 located outside the inner container. The upper end of the locking member 670 is specifically connected to the lower connector 632 of the sewage connector 630 .

[0159] The inner diameter of the locking protrusion 671 of the locking piece 670 is smaller than the outer diameter of the valve body 611. Before the bushing sleeve 660 is connected to the valve body 611, the locking piece 670 is first sleeved on the outside of the bushing sleeve 660 from bottom to top, and then the bushing sleeve 660 is connected to the valve body 611. Finally, the locking piece 670 is threadedly connected to the drain joint 630.

[0160] Reference again Figure 21 In some embodiments of the present application, the sewage pipe 680 is sleeved on the lower connecting portion 622 of the adapter 620 in a tight fit manner.

[0161] Specifically, a plurality of annular sealing protrusions 6221 are provided at intervals on the outer wall of the lower connecting portion 622 to improve the tightness of the connection between the sewage pipe 680 and the lower connecting portion 622 .

[0162] A connection hole is formed on the outer shell 100 , and the sewage discharge assembly 600 extends from the connection hole to the outside of the outer shell 100 .

[0163] In some embodiments of the present application, since foam is filled between the inner liner and the outer shell 100, in order to prevent leakage of the foam, a protective cover 640 is provided on the outer cover of the sewage joint 630, and the lower side of the protective cover 640 is connected to the outer shell 100.

[0164] The drain joint 630 is connected to the lowest position in the heating cavity of the inner tank. The drain joint 630 includes an upper joint 631 and a lower joint 632. The locking piece 670 is connected to the lower joint 632. The outer diameter of the upper joint 631 is larger than the lower joint 632. A transition surface is formed between the upper joint 631 and the lower joint 632, and the protective cover body 640 is connected to the transition surface.

[0165] Specifically, refer to Figure 23 The protective cover body 640 includes a cover top surface 641, a cover peripheral surface 642, and an overlapping outer edge 643 formed at the bottom of the cover peripheral surface 642 and extending outward. A protective opening 6411 is formed in the middle of the cover top surface 641. The cover top surface 641 is sleeved on the sewage joint 630 from bottom to top. The size of the protective opening 6411 on the cover top surface 641 is smaller than the outer diameter of the upper joint 631. In the installed state, the cover top surface 641 is sleeved on the outside of the transition surface through the protective opening 6411.

[0166] An inner limit portion 644 is formed on the peripheral surface 642 of the cover body. During installation, the protective cover body 640 is installed from bottom to top on the outside of the sewage discharge assembly 600 from the connecting hole of the outer shell 100. The inner limit portion 644 is retracted inwardly under the action of the connecting hole until the inner limit portion 644 passes through the connecting hole and is reset under the action of its own elastic force, so that the outer shell 100 is connected between the snap portion 615 and the overlapping outer edge 643.

[0167] The protective cover body 640 is used to isolate the sewage discharge component 600 from the foaming cavity to prevent the foaming material from contacting the sewage discharge component 600 and affecting the sewage discharge operation. It is also helpful to prevent the foaming material from leaking from the connection hole position, thereby achieving a sealing and protective effect.

[0168] The shape of the overlapping outer edge 643 is adapted to the outer shell 100 so that the outer shell 100 fits tightly with the overlapping outer edge 643 to reduce leakage of the foamed part.

[0169] The knob portion 650 is further provided with an operating handle 651 for convenient handheld operation by the user.

[0170] refer to Figure 24The water heater involved in this application is provided with a vent valve group 500, which is used to allow air to enter the inner tank when the water heater is draining, so as to balance the air pressure between the heating cavity of the inner tank and the outside world, ensuring smooth drainage and thorough sewage discharge.

[0171] Specifically, the vent valve group 500 is set on the water outlet component 400. Before the vent valve group 500 is opened, the water inlet component 300 needs to be closed to stop water inlet, and the water outlet component 400 is opened to discharge the water in the water outlet pipe to connect the vent valve group 500 and the heating cavity.

[0172] Then, open the vent valve group 500 to keep the air pressure between the heating cavity and the outside balanced, and connect the sewage pipe group to the sewage valve group 610, open the sewage valve group 610, and discharge the sewage in the heating cavity from the sewage pipe group.

[0173] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations 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 any one or more embodiments or examples.

[0174] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A water heater, characterized in that: include: outer shell; An inner liner assembly, comprising at least one inner liner installed in the outer shell, wherein a heating element is provided in the inner liner; The anti-electric wall assembly comprises a cover body provided on the outer shell, the cover body being provided with a mounting opening, and a cover plate being detachably connected to the mounting opening; The sensing component includes a sensing part and a signal part, wherein the sensing part is fixed on the cover body and the signal part is installed on the inner side of the cover plate; Wherein, the sensing part is electrically connected to the heating element and is used to control the switch of the heating element, or The sensing portion is connected to a prompting member, and the prompting member is used to remind the user to turn off the heating member.

2. The water heater according to claim 1, characterized in that An upwardly extending cutout is formed on one side of the installation opening, the cover plate is plugged into the installation opening from the side where the cutout is located, and an upwardly extending bent portion is formed at one end of the cover plate, the bent portion being adapted to the size of the cutout.

3. The water heater according to claim 1, wherein: Support inner edges extending toward the mounting port are formed on both sides of the mounting port, and plug-in portions are formed on the corresponding two sides of the cover plate. Plug-in grooves are formed on the plug-in portions, and the support inner edges are plugged into the plug-in grooves.

4. The water heater according to claim 2, characterized in that The other end of the cover plate away from the bent portion is provided with an overlapping portion, the front side of the overlapping portion extends to the outside of the cover plate, and the overlapping portion is connected to the inner side of the installation opening.

5. The water heater according to claim 1, wherein: A first fastening portion is also formed on the cover plate, a fixing hole is formed through the first fastening portion, a second fastening portion is formed on the inner side of the installation port and extends toward the installation port, a threaded hole is formed on the second fastening portion, and a fastener passes through the fixing hole from bottom to top and is connected in the threaded hole.

6. The water heater according to claim 1, characterized in that A lower supporting portion is formed on the cover plate, the signal portion is mounted on the lower supporting portion, an upper supporting portion is provided on the cover body, and the sensing portion is mounted on the upper supporting portion.

7. The water heater according to claim 6, characterized in that The upper supporting portion includes two upper clamping upright portions that are arranged opposite to each other, upper buckles are formed on the upper clamping upright portions, and the sensing portion is connected between the upper clamping upright portions through the upper buckles.

8. The water heater according to claim 6, characterized in that The lower supporting portion includes two lower clamping upright portions that are arranged opposite to each other. The lower clamping upright portions are provided with lower buckles, and the signal portion is connected between the lower clamping upright portions through the lower buckles.

9. The water heater according to claim 1, wherein: It also includes a sewage discharge component, which is located directly above the installation port. The sewage discharge component includes a sewage discharge joint and a sewage discharge valve group. The upper end of the sewage discharge joint is connected to the inner tank, and the lower end of the sewage discharge joint is connected to the sewage discharge valve group. The sewage discharge valve group is used to connect to an external sewage discharge pipe group.

10. The water heater according to claim 9, characterized in that The sewage valve group includes a valve body, a valve core and a knob part. The upper end of the valve body is connected to the sewage connector, the valve core is connected to the valve body, and the knob part is connected to the valve core for controlling the switch of the sewage valve group.

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