Pollution discharge assembly and water heater

Abstract

The utility model relates to a blowdown assembly and a water heater, the blowdown assembly comprises a blowdown joint, a blowdown valve group and a blowdown pipe group, and the blowdown joint is used for being connected with an inner container; the blow-down valve group comprises a valve body, a valve core and a knob part, the valve core is connected in the valve body, and the knob part is connected with the valve core; the blow-off pipe group comprises an adapter and a blow-off pipe connected to the adapter; the upper end of the valve body is connected with the pollution discharge connector, a buckling part is formed on the outer wall of the valve body, a clamping part is formed on the adapter, and the clamping part is connected to the buckling part in a rotary clamping mode; during sewage discharge, the sewage discharge pipe group is rotationally clamped on the sewage discharge valve group, so that the connection efficiency is improved, the connection of the sewage discharge pipe group and the sewage discharge valve group is realized only by sleeving the adapter on the outer side of the valve body, rotating the adapter and connecting the clamping part on the buckling part, and the connection mode is simple and convenient to operate, and can prevent the sewage discharge pipe group and the sewage discharge valve group from being damaged under the impact of water flow. The risk that the blow-off pipe group falls off is reduced, 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 sewage discharge component and a water heater. Background Art

[0002] A water heater is a device that uses various physical principles to heat cold water over a period of time, thereby providing hot water. During the heating process, certain substances in the water may precipitate and form scale. Examples include calcium bicarbonate and magnesium bicarbonate. When the water in the water is heated, the dissolved calcium bicarbonate and magnesium bicarbonate decompose, producing calcium carbonate and magnesium hydroxide, which are insoluble in water and precipitate in the water, forming scale.

[0003] A magnesium rod is usually 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 and cannot be completely removed, which will affect the quality of the water in the inner tank, cause corrosion to the inner tank, and reduce the life of the inner tank. Utility Model Content

[0004] The purpose of the utility model is to provide a sewage discharge component and a water heater to solve the problems existing in the prior art that impurities such as scale formed in the inner tank are inconvenient to clean, scale accumulates at the bottom of the inner tank, affects water quality, and reduces the service life of the inner tank.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0006] In one aspect, the present invention provides a sewage discharge assembly comprising:

[0007] A sewage connector, which is used to connect to the inner tank;

[0008] A sewage valve assembly comprises a valve body, a valve core and a knob portion, wherein the valve core is connected to the valve body, and the knob portion is connected to the valve core;

[0009] A sewage pipe assembly, comprising an adapter and a sewage pipe connected to the adapter;

[0010] The upper end of the valve body is connected to the sewage connector, a snap-fit portion is formed on the outer wall of the valve body, a snap-fit portion is formed on the adapter, and the snap-fit portion is connected to the snap-fit portion by rotating the snap-fit portion.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] The sewage discharge component is used to connect with the inner tank to discharge the scale formed in the inner tank, which makes the sewage discharge more thorough and avoids the long-term accumulation of scale in the inner tank, thereby improving the water quality and the service life of the inner tank;

[0013] When discharging sewage, the sewage pipe group is rotated and clamped on the sewage valve group, which is beneficial to improving the connection efficiency. When connecting, you only need to put the adapter on the outside of the valve body, rotate the adapter, and connect the clamping part to the buckle part to achieve the connection between the sewage pipe group and the sewage valve group. 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.

[0014] In some embodiments of the present application, the adapter includes an upper connecting portion and a lower connecting portion, the upper connecting portion is sleeved on the lower end of the valve body; the clamping portion is formed above the upper connecting portion, the number of the clamping portions is at least two, the snap-fit portion is arranged on the side wall of the valve body and corresponds one-to-one to the snap-fit portion, each of the snap-fit portions is formed with a clamping groove portion with an open side, and along the rotation direction of the adapter, each of the snap-fit groove portions is located on the same side of the corresponding snap-fit portion, so that each of the snap-fit groove portions is synchronously connected or separated with the corresponding snap-fit portion.

[0015] The number of the clamping parts is at least two, which is beneficial to improving the stability of the connection between the sewage pipe group and the sewage valve group. When the sewage pipe group is installed, the clamping part on the adapter corresponds to the buckle part one by one. As the adapter rotates, the clamping groove is connected to the corresponding buckle part to realize the connection and fixation of the sewage pipe group and the sewage valve group.

[0016] In some embodiments of the present application, a valve chamber is formed in the valve body, the valve core is connected to the valve chamber, a valve port is formed on the side wall of the valve body, a valve shaft is rotatably connected to the valve port, and both ends of the valve shaft are respectively connected to the knob portion and the valve core;

[0017] A limit portion is formed on the knob portion, and a limit matching portion is formed on the outer wall of the valve body, for limiting the rotation range of the knob portion.

[0018] The interaction between the limiting portion and the limiting matching portion is conducive to limiting the rotational position of the knob portion to be opened and closed by the user.

[0019] In some embodiments of the present application, the limiting portion is an arc-shaped groove formed on the knob portion, the limiting matching portion is a convex portion formed on the outer side of the valve port, and the limiting matching portion is connected to the limiting portion;

[0020] When the drain valve assembly is in the open state, the first end of the limit portion is in contact with and connected to the limit matching portion; when the drain valve assembly is in the closed state, the second end of the limit portion is in contact with and connected to the limit matching portion.

[0021] During the opening and closing process of the knob, the limiting matching part on it moves within the limiting part, and the rotation of the limiting rotating part plays a guiding and limiting role, so that the opening and closing position of the valve core is more accurate.

[0022] In some embodiments of the present application, the valve body is a structure with upper and lower openings, and a lining member is also provided above the valve body, and the lining member includes an upper extension section, a connecting section and a lower extension section from top to bottom; the upper extension section is inserted into the sewage discharge joint; the connecting section is connected between the valve body and the sewage discharge joint; the lower extension section is connected to the inner wall of the valve chamber, and a rotating inner cavity is enclosed between the bottom of the lower extension section and the valve body, and the valve core is installed in the rotating inner cavity.

[0023] The bushing acts as a limiter for the valve core. During installation, first install the valve core into the valve chamber from top to bottom, then connect the bushing to the top of the valve body, insert the lower extension section into the valve body, contact and connect with the valve core, and limit the position of the valve core so that the valve core can rotate in the valve chamber.

[0024] In some embodiments of the present application, the bushing sleeve and the drain joint are also connected by a locking piece, and the lower end of the locking piece is formed with a snap-fitting protrusion extending inward, and the outer wall of the connecting section is also formed with a connecting protrusion extending outward, and the snap-fitting protrusion is snapped to the lower end of the connecting protrusion, and the upper end of the locking piece is threadedly connected to the outer wall of the drain joint.

[0025] The locking piece is used to connect and fix the lining sleeve and the sewage connector.

[0026] In some embodiments of the present application, a plurality of sealing protrusions are arranged at intervals on the outer wall of the lower connecting portion, and the sewage pipe is connected to the lower connecting portion.

[0027] The sealing convex portion is also beneficial to improving the tightness of the connection between the lower connecting portion and the sewage pipe, thereby improving the connection strength.

[0028] On the other hand, the present application also proposes a water heater, comprising an outer shell and an inner tank arranged in the outer shell, and also comprising a sewage discharge assembly involved in any of the above items.

[0029] Through the above-mentioned sewage discharge component, impurities such as scale accumulated in the inner tank can be completely discharged, which is beneficial to improving water quality.

[0030] In some embodiments of the present application, an anti-electric wall structure is also provided at the bottom of the outer shell, and the anti-electric wall structure includes a cover body, and an installation port is formed on the cover body. A cover plate is detachably connected to the installation port, and the sewage pipe group is configured to be connected to the sewage valve group from the installation port position.

[0031] The cover plate is used to seal the installation port. When sewage discharge is not required, the sewage valve group is sealed in the cover body. When sewage discharge is required, the cover plate is removed, and the sewage pipe group is connected to the sewage valve group from the installation port to discharge sewage.

[0032] In some embodiments of the present application, a connection hole is formed on the outer shell, the sewage discharge assembly extends from the connection hole to the outside of the outer shell, and the sewage discharge joint is outer-circuited with a protective cover, and the lower side of the protective cover is connected to the outer shell.

[0033] A foaming cavity is formed between the inner liner and the outer shell for filling with foam material. The protective cover body is used to isolate the sewage discharge component from the foaming cavity to prevent the foam material from contacting the sewage discharge component and affecting the sewage discharge operation. It is also beneficial to prevent the foam material from leaking from the connecting hole, thereby achieving a sealing and protective effect.

[0034] 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

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the appearance of the water heater proposed by the utility model;

[0037] Figure 2 This is a schematic diagram of the connection between the sewage pipe group and the sewage valve group;

[0038] Figure 3 yes Figure 2 A is an enlarged schematic diagram;

[0039] Figure 4 It is a schematic diagram of the internal structure of the water heater;

[0040] Figure 5 It is a schematic diagram of a cross section of a water heater;

[0041] Figure 6 yes Figure 5 An enlarged schematic diagram of point B in FIG.

[0042] Figure 7 It is a cutaway diagram of the sewage discharge assembly;

[0043] Figure 8 It is a schematic diagram of the disassembly of the sewage discharge component;

[0044] Figure 9 It is a schematic diagram of the valve body structure;

[0045] Figure 10 1. It is a schematic diagram of the structure of the knob part;

[0046] Figure 11 Schematic diagram of the adapter structure;

[0047] Figure 12 It is a schematic diagram of the fastener structure;

[0048] Figure 13 Schematic diagram of the protective cover structure;

[0049] In the figure,

[0050] 100. Outer shell;

[0051] 200, inner liner assembly; 210, first inner liner; 220, second inner liner;

[0052] 300, water inlet assembly;

[0053] 400, water outlet assembly;

[0054] 500, vent valve assembly;

[0055] 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;

[0056] 620, adapter; 621, upper connecting portion; 622, lower connecting portion; 6221, sealing protrusion; 623, clamping portion; 6231, clamping groove;

[0057] 630, sewage connection; 631, upper connection; 632, lower connection;

[0058] 640, protective cover body; 641, cover body top surface; 6411, protective opening; 642, cover body peripheral surface; 643, overlapping outer edge; 644, inner limit portion;

[0059] 650, knob portion; 651, operating handle; 652, shaft hole; 653, limit portion;

[0060] 660, bushing; 661, sealing ring; 662, upper extension section; 663, connecting protrusion; 664, connecting section; 665, lower extension section;

[0061] 670, locking member; 671, snap-fitting protrusion;

[0062] 680, sewage pipe;

[0063] 700, anti-electric wall structure; 701, installation port; 710, cover body; 720, cover plate;

[0064] 800. Heating element; 810. Magnesium rod. DETAILED DESCRIPTION

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] An electric water heater uses electricity as its main energy source. The high-temperature heat generated when powered on directly heats the water stored in the electric water heater to prepare hot water.

[0071] An electric water heater usually consists of a water tank, an electric heating component, and an electric control board. A water storage cavity is formed in the water tank to store the water to be heated. The electric heating component is inserted into the water storage cavity formed by the water tank. The electric control board is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to the set temperature.

[0072] The water tank of an electric water heater generally consists of an outer shell and an inner tank, with an insulation layer between the outer shell and the inner tank. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse design. The inner tank can be made of metal or plastic depending on the needs.

[0073] In addition, the insulation layer formed between the outer shell and the inner liner is made of commonly used insulation materials such as asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0074] Among them, for the inner tank with a metal body, the interior of the inner tank is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0075] Because magnesium has the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for use as a magnesium rod to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protective effect. The larger the magnesium rod, the better the protection and the longer the protection lasts.

[0076] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to deliver cold water to the water storage cavity formed in the water tank, while the hot water in the water storage cavity is output from the water outlet pipe.

[0077] For the electric heating component, electric heating methods such as electric heating wire, magnetic energy or silicon tube heating can be used to heat the water stored in the water storage cavity.

[0078] As for the electric control board, it is used to receive detection signals sent by relevant sensors (such as water temperature sensor, flow sensor), and at the same time, control the power on and off operation of the electric heating component.

[0079] When the electric water heater is working, the electric control board controls the electric heating component to be powered on for heating. When the water temperature in the water tank reaches the set value, the electric control board controls the electric heating component to be powered off.

[0080] refer to Figure 1-Figure 4 The present application proposes a sewage discharge component 600 and a water heater, wherein the sewage discharge component 600 is used to be installed on the water heater.

[0081] The water heater specifically includes an outer shell 100 and an inner tank assembly 200 . An installation cavity is formed in the outer shell 100 . 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 .

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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 .

[0090] 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 .

[0091] 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.

[0092] Specific reference Figure 5-Figure 8 The sewage discharge component 600 is specifically connected to the lowest position of the side wall of the second inner liner 220 to completely discharge the water and impurities in the first inner liner 210 and the second inner liner 220.

[0093] The 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 .

[0094] Specific reference Figure 7 The drain 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 drain valve group 610.

[0095] The sewage pipe assembly includes an adapter 620 and a sewage pipe 680 connected to the adapter 620 .

[0096] Combine Figure 9 , wherein 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, and the snap-fit portion 623 is connected to the snap-fit portion 615 by rotating snap-fit.

[0097] 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.

[0098] Specific, combined Figure 11 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.

[0099] 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 .

[0100] A sealing portion is formed between the bottom of the valve body 611 and the upper connecting portion 621 to prevent sewage leakage.

[0101] 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.

[0102] 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 .

[0103] 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.

[0104] 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 .

[0105] 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 .

[0106] 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.

[0107] 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.

[0108] Reference again Figure 9 、 Figure 10 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.

[0109] 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 .

[0110] 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.

[0111] 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.

[0112] 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 .

[0113] In one embodiment, the limiting portion 653 is a protrusion formed on the knob portion 650 and extending toward the side wall of the valve body 611, and the limiting matching portion 614 is two protrusions formed on the side wall of the valve body 611 and extending outward. The limiting portion 653 is located between the two protrusions formed by the limiting matching portion 614.

[0114] As the knob portion 650 rotates, the limiting portion 653 moves relative to the limiting matching portion 614 .

[0115] In the open state, the limiting portion 653 contacts one of the protrusions of the limiting matching portion 614 , and in the closed state, the limiting portion 653 contacts the other protrusion of the limiting matching portion 614 .

[0116] 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 .

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] refer to Figure 12 Specifically, the bushing member 660 includes an upper extension section 662 , a connecting section 664 and a lower extension section 665 from top to bottom, 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 .

[0122] The connecting section 664 is connected between the valve body 611 and the drain connector 630 .

[0123] That is, the bottom of the connecting section 664 is connected to the upper end of the valve body 611 , and the top of the connecting section 664 is connected to the sewage connection 630 .

[0124] The upper extension section 662 is plugged into the sewage connector 630 .

[0125] 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 and connected to the valve core 612 .

[0126] 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 .

[0127] 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.

[0128] A rotating inner cavity is defined between the bottom of the lower extension section 665 and the valve body, and the valve core 612 is installed in the rotating inner cavity.

[0129] refer to Figure 7 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.

[0130] 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.

[0131] 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 .

[0132] 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.

[0133] Reference again Figure 11 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.

[0134] 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 .

[0135] Combine Figure 1 、 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 .

[0136] 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 disassemble and install the sewage pipe group.

[0137] 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.

[0138] 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 .

[0139] 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.

[0140] 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 section 631 and a lower joint section 632. The locking piece 670 is connected to the lower joint section 632. The outer diameter of the upper joint section 631 is larger than that of the lower joint section 632. A transition surface is formed between the upper joint section 631 and the lower joint section 632, and the protective cover body 640 is connected to the transition surface.

[0141] Specifically, refer to Figure 13 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] The knob portion 650 is further provided with an operating handle 651 for convenient handheld operation by the user.

[0146] The water heater also includes a vent valve assembly 500, which is used to balance the air pressure in the heating cavity and the outside during the sewage discharge process, so as to avoid the water pressure in the tank being reduced and the water flow rate being slowed down during the sewage discharge process, thereby preventing the sewage from being completely discharged.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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 sewage discharge assembly, characterized in that: include: A sewage connector, which is used to connect to the inner tank; A sewage valve assembly, comprising a valve body, a valve core and a knob portion, wherein the valve core is connected to the valve body, and the knob portion is connected to the valve core; A sewage pipe assembly, comprising an adapter and a sewage pipe connected to the adapter; The upper end of the valve body is connected to the sewage connector, a snap-fit portion is formed on the outer wall of the valve body, a snap-fit portion is formed on the adapter, and the snap-fit portion is connected to the snap-fit portion by rotating the snap-fit portion.

2. The sewage discharge assembly according to claim 1, characterized in that The adapter includes an upper connecting portion and a lower connecting portion, the upper connecting portion is sleeved on the lower end of the valve body; the clamping portion is formed above the upper connecting portion, the number of the clamping portions is at least two, the buckle portion is arranged on the side wall of the valve body and corresponds to the clamping portion one by one, and a clamping groove portion with an open side is formed on each of the clamping portions, and along the rotation direction of the adapter, each of the clamping groove portions is located on the same side of the corresponding clamping portion, so that each clamping groove portion is synchronously connected or separated with the corresponding buckle portion.

3. The sewage discharge assembly according to claim 1, characterized in that A valve chamber is formed in the valve body, the valve core is connected to the valve chamber, a valve port is formed on the side wall of the valve body, a valve shaft is rotatably connected to the valve port, and two ends of the valve shaft are respectively connected to the knob portion and the valve core; A limit portion is formed on the knob portion, and a limit matching portion is formed on the outer wall of the valve body, for limiting the rotation range of the knob portion.

4. The sewage discharge assembly according to claim 3, characterized in that: The limiting portion is an arc-shaped groove formed on the knob portion, the limiting matching portion is a convex portion formed on the outside of the valve port, and the limiting matching portion is connected to the limiting portion; When the drain valve assembly is in the open state, the first end of the limit portion is in contact with and connected to the limit matching portion; when the drain valve assembly is in the closed state, the second end of the limit portion is in contact with and connected to the limit matching portion.

5. The sewage discharge assembly according to claim 3, characterized in that: The valve body is a structure with upper and lower openings, and a lining member is also provided above the valve body, and the lining member includes an upper extension section, a connecting section and a lower extension section from top to bottom; the upper extension section is inserted into the sewage discharge joint; the connecting section is connected between the valve body and the sewage discharge joint; the lower extension section is connected to the inner wall of the valve chamber, and a rotating inner cavity is enclosed between the bottom of the lower extension section and the valve body, and the valve core is installed in the rotating inner cavity.

6. The sewage discharge assembly according to claim 5, characterized in that: The lining sleeve and the drain joint are also connected by a locking piece, and the lower end of the locking piece is formed with a snap-fitting protrusion extending inward, and the outer wall of the connecting section is also formed with a connecting protrusion extending outward, and the snap-fitting protrusion is snapped to the lower end of the connecting protrusion, and the upper end of the locking piece is threadedly connected to the outer wall of the drain joint.

7. The sewage discharge assembly according to claim 2, characterized in that: A plurality of sealing protrusions are arranged at intervals on the outer wall of the lower connecting portion, and the sewage pipe is connected to the lower connecting portion.

8. A water heater comprising an outer shell and an inner tank disposed in the outer shell, characterized in that: The invention comprises the sewage discharge component according to any one of claims 1 to 7.

9. The water heater according to claim 8, characterized in that An anti-electricity wall structure is also provided at the bottom of the outer shell, and the anti-electricity wall structure includes a cover body, a mounting port is formed on the cover body, and a cover plate is detachably connected to the mounting port. The sewage pipe group is configured to be connected to the sewage valve group from the mounting port position.

10. The water heater according to claim 9, characterized in that A connecting hole is formed on the outer shell, and the sewage discharge assembly extends from the connecting hole to the outside of the outer shell. A protective cover is provided on the outer shell of the sewage discharge joint, and the lower side of the protective cover is connected to the outer shell.

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