Water heater

Abstract

The utility model relates to a water heater which comprises an outer shell, an inner container assembly, a water outlet assembly and a pollution discharge assembly, the inner container assembly is arranged in the outer shell, the water outlet assembly and the pollution discharge assembly are connected with the inner container assembly, the water outlet assembly comprises a water outlet connector and a water outlet pipe, and a pollution discharge adapter is arranged below the pollution discharge assembly. A pollution discharge connector and an air vent are formed in the pollution discharge adapter, the water outlet connector is further connected with a water outlet adapter, and a water outlet connector and an air inlet connector are formed in the water outlet adapter; the air inlet connector is connected with the ventilation opening through an air inlet piece. When a user normally uses water, the air inlet piece and the pollution discharge assembly are in a closed state, when pollution discharge is conducted, the water outlet connector at the end of the water outlet adapter is closed, sewage in the heating inner cavity is output from the pollution discharge pipe through the pollution discharge assembly, and in the pollution discharge process, air can be input into the inner container through the air inlet piece and the water outlet assembly from the air inlet; air pressure between the heating inner cavity of the inner container and the outside is balanced, smooth drainage is guaranteed, and user operation is facilitated.

Description

Technical Field

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

[0002] During the heating process of the water in the inner tank of the water heater, some substances in the water may precipitate to form scale after heating, such as calcium bicarbonate, magnesium bicarbonate, etc. After the water in the inner tank is heated, both calcium bicarbonate and magnesium bicarbonate dissolved in the water decompose, and the generated calcium carbonate and magnesium hydroxide are insoluble in water, forming precipitates in the inner tank to form scale.

[0003] Generally, a magnesium rod is arranged in the inner tank of the water heater. Although the magnesium rod can release magnesium ions to reduce the phenomena of water scale and water alkali in the inner tank, scale still accumulates at the bottom of the inner tank, which cannot be completely removed, affecting the quality of the water in the inner tank, and also causing corrosion to the inner tank, reducing the service 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. During the sewage discharge process of the sewage discharge component, as the sewage is discharged, the internal air pressure decreases. Due to the existence of the internal and external air pressure difference, the sewage discharge speed becomes slow and the sewage discharge is not thorough. In addition, during sewage discharge, the user needs to repeatedly install and disassemble structures such as the cover plate on the outer shell to install the sewage discharge component, which requires a high operating requirement for the user and causes a heavy burden on the user. Summary of the Invention

[0004] The purpose of the utility model is to provide a water heater to solve the problems existing in the prior art, such as during the sewage discharge process of the existing water heater, the air pressure in the inner tank is not balanced with the external air pressure, resulting in slow sewage discharge speed, incomplete sewage discharge, and the user needs to install and disassemble the cover plate part and the sewage discharge pipe group during sewage discharge, which causes a heavy burden on the user.

[0005] To achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions to be realized:

[0006] The utility model provides a water heater, which includes:

[0007] An outer shell body, in which an installation inner cavity is formed;

[0008] An inner tank assembly, which includes at least one inner tank, and the inner tank is installed in the installation inner cavity;

[0009] A water outlet assembly, which includes a water outlet joint and a water outlet pipe connected to the water outlet joint. The water outlet joint is connected to the outer shell body, and the water outlet pipe extends into the heating inner cavity of the inner tank;

[0010] A sewage discharge component, which is connected to the heating inner cavity of the inner tank. A sewage discharge adapter is arranged below the sewage discharge component, and a sewage discharge interface and a ventilation port are formed on the sewage discharge adapter. The sewage discharge interface is used for externally connecting a sewage discharge pipe;

[0011] Wherein, the water outlet joint is further connected with a water outlet adapter, and a water outlet interface and an air inlet interface are formed on the water outlet adapter. The water outlet interface is used for connecting with a water-using terminal, and the air inlet interface is connected with the ventilation port through an air inlet member.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] For the water heater involved in the present application, a water outlet adapter is arranged at the lower end of the water outlet assembly, a sewage discharge adapter is arranged on the sewage discharge assembly, and an air inlet member is arranged between the sewage discharge adapter and the water outlet adapter. When a user uses water normally, the air inlet member and the sewage discharge assembly are in a closed state. When discharging sewage, the water outlet interface at the end of the water outlet adapter is closed, and the sewage in the heating cavity is output from the sewage discharge pipe through the sewage discharge assembly. During the sewage discharge process, gas can also be input into the inner tank from the air inlet through the air inlet member and the water outlet assembly to balance the air pressure between the heating cavity of the inner tank and the outside, ensuring smooth drainage and thorough sewage discharge.

[0014] The sewage discharge assembly is preset on the water heater. When using water and discharging sewage normally, the user only needs to operate the corresponding switch to realize the conversion between using water and discharging sewage. The user operation is simple and convenient, and the use effect is good.

[0015] In some embodiments of the present application, the first end of the air inlet member is connected with the ventilation port or the air inlet interface in a threaded connection manner, and the second end of the air inlet member is connected with the air inlet interface or the ventilation port through an adapter sleeve.

[0016] When connecting, first thread-connect the first end of the air inlet member to the air inlet interface or the ventilation port, and connect the other end of the air inlet member to the sewage discharge adapter or the water outlet adapter through an adapter sleeve, avoiding interference during the assembly of the air inlet member.

[0017] In some embodiments of the present application, an outwardly extending outer connecting portion is formed on the outer wall of the second end of the air inlet member, and an inwardly extending inner connecting portion is arranged at one end of the adapter sleeve. The inner connecting portion and the outer connecting portion are cooperatively connected to realize the detachable connection between the adapter sleeve and the second end of the air inlet member;

[0018] The other end of the adapter sleeve is thread-connected to the sewage discharge interface or the ventilation port.

[0019] In some embodiments of the present application, a water outlet switch member is further arranged on the water outlet interface. When using water, the water outlet switch member is in an open state; when discharging sewage, the water outlet switch member is in a closed state.

[0020] In some embodiments of the present application, 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 heating cavity of the inner tank, and the lower end is connected to the sewage discharge valve group. A sewage transfer piece is connected to the sewage discharge valve group, and the sewage discharge valve group is used to control the opening and closing of the sewage discharge assembly.

[0021] This sewage discharge assembly is used to connect with the inner tank to discharge the scale formed in the inner tank, making the sewage discharge more thorough, avoiding the long-term accumulation of scale in the inner tank, and being beneficial to improving the water quality and the service life of the inner tank.

[0022] In some embodiments of the present application, the sewage discharge valve group includes a sewage discharge valve body, a sewage discharge valve core, and a knob part. The two ends of the sewage discharge valve body are respectively connected to the sewage discharge joint and the sewage transfer piece. A sewage discharge valve chamber is formed in the sewage discharge valve body. The sewage discharge valve core is rotatably connected in the sewage discharge valve chamber, and the knob part is connected to the sewage discharge valve core.

[0023] In some embodiments of the present application, the sewage transfer piece includes an upper connection part and a lower connection part. The upper connection part is sleeved on the lower end of the sewage discharge valve body; the lower connection part is used to connect with a sewage pipe.

[0024] In some embodiments of the present application, a clamping part extending towards the sewage discharge valve body is formed on the outer wall of the upper connection part. The number of the clamping parts is at least two. A buckling part corresponding to the clamping part one by one is formed on the side wall of the sewage discharge valve body. Each clamping part is formed with a clamping groove part with one side open, and along the rotation direction of the transfer piece, each clamping groove part is located on the same side of the corresponding clamping part, so that each clamping groove part is synchronously connected or separated from the corresponding buckling part.

[0025] The number of the clamping parts being at least two is beneficial to improving the connection stability between the sewage pipe group and the sewage discharge valve group. When installing the sewage pipe group, the clamping parts on the transfer piece correspond to the buckling parts one by one. As the transfer piece rotates, the clamping groove part is connected to the corresponding buckling part, realizing the connection and fixation of the sewage pipe group and the sewage discharge valve group.

[0026] In some embodiments of the present application, a valve port is formed on the side wall of the sewage discharge valve body. A valve shaft is rotatably connected to the valve port. The two ends of the valve shaft are respectively connected to the knob part and the sewage discharge valve core.

[0027] In some embodiments of the present application, a limiting part is formed on the knob part, and a limiting cooperation part is formed on the outer wall of the sewage discharge valve body for limiting the rotation range of the knob part.

[0028] The interaction between the limiting part and the limiting cooperation part is beneficial to restricting the rotation positions of the user to rotate the knob part to open and close.

[0029] In some embodiments of the present application, an air inlet passage is formed in the air inlet member, and an air vent valve group is provided on the air inlet member. The air vent valve group is used to control the on / off of the air inlet passage. The air vent valve group includes an air vent valve core and a control part connected to the air vent valve core. An air vent valve chamber is formed in the air inlet passage, the air vent valve core is installed in the air vent valve chamber, and the control part is connected to the outside of the air inlet member.

[0030] The air vent valve group is used to introduce air into the inner tank when the water heater drains water, so as to balance the air pressure between the heating inner cavity of the inner tank and the outside, ensure smooth drainage and complete sewage discharge.

[0031] In some embodiments of the present application, an installation part is provided on the side wall of the air vent valve body. An installation hole communicating with the air vent valve chamber is formed on the installation part, and a valve rod is rotatably connected in the installation hole. Two ends of the valve rod are respectively connected to the control part and the air vent valve core.

[0032] The user operates the installation part, drives the air vent valve core to rotate in the air vent valve chamber through the valve rod, and then controls the on / off of the air inlet passage in the air inlet member.

[0033] In some embodiments of the present application, a stop part is formed on the installation part, and a limit convex part is formed on the control part. The limit convex part is configured such that when the control part is in the open and closed states, the corresponding positions of the limit convex part and the stop part are in contact.

[0034] The combined use of the stop part and the limit convex part can limit the switching range of the control part, and the switching accuracy is higher.

[0035] After reading the specific embodiments of the present utility model in conjunction with the accompanying drawings, other features and advantages of the present utility model will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 is one of the schematic diagrams of the overall structure of the water heater proposed by the present utility model;

[0038] Figure 2 is another schematic diagram of the overall structure of the water heater proposed by the present utility model;

[0039] Figure 3 is Figure 2Enlarged schematic diagram of area A in

[0040] Figure 4 It is a schematic diagram of the end face of the water heater;

[0041] Figure 5 It is Figure 4 The B-B cross-sectional view in

[0042] Figure 6 It is a schematic cross-sectional view of the water outlet component, air inlet component, and sewage discharge component;

[0043] Figure 7 It is a schematic cross-sectional view of the sewage discharge component;

[0044] Figure 8 It is a schematic diagram of the structure of the sewage transfer part;

[0045] Figure 9 It is a structural diagram of the sewage discharge valve body;

[0046] Figure 10 It is a structural diagram of the knob part;

[0047] Figure 11 It is a schematic diagram of the connection between the installation part and the control part;

[0048] Figure 12 It is a schematic diagram of the structure of the control part;

[0049] In the figure,

[0050] 100, outer housing;

[0051] 200, inner tank assembly;

[0052] 300, water inlet component; 310, water inlet joint; 320, water inlet pipe;

[0053] 400, water outlet component; 410, water outlet joint; 420, water outlet pipe; 430, water outlet transfer part; 431, connection interface; 432, water outlet interface; 433, air inlet interface;

[0054] 500, air inlet component; 510, first end; 520, second end; 530, outer connection part; 540, transfer sleeve; 541, inner connection part; 550, stop part;

[0055] 600, sewage discharge component; 610, sewage discharge joint; 620, sewage discharge valve group; 621, sewage discharge valve body; 6211, valve body connection part; 6212, buckle part; 6213, valve port; 6214, limit matching part; 622, sewage discharge valve core; 623, sewage discharge valve shaft;

[0056] 630, sewage transfer part; 631, sewage discharge interface; 632, ventilation port; 633, clamping part; 6331, clamping groove part;

[0057] 6301. Upper connecting part; 6302. Lower connecting part;

[0058] 640. Lining kit;

[0059] 650. Locking part; 651. Clamping convex part;

[0060] 660. Sealing part;

[0061] 670. Protective cover body;

[0062] 700. Electric shock prevention wall structure; 710. Cover plate;

[0063] 810. Knob part; 811. Shaft hole; 812. Limiting part; 813. Rotating handle;

[0064] 820. Control part; 821. Hand-held part; 822. Socket; 823. Limiting convex part; 8231. First limiting surface; 8232. Second limiting surface. Detailed implementation manners

[0065] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0066] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0067] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0068] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may also include the contact between the first and second features through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0069] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0070] An electric water heater uses electric energy as the main energy source material. After being powered on, the high-temperature heat generated directly heats the water stored in the electric water heater to achieve the purpose of preparing hot water.

[0071] An electric water heater generally includes components such as a water tank, an electric heating component, and an electric control board. Among them, 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, and the electric control board is used to control the on-off operation of the electric heating component so that the water in the water tank is heated to a set temperature.

[0072] For the water tank of an electric water heater, the water tank generally includes a shell and an inner tank, and a heat insulation layer is formed between the shell and the inner tank. Among them, the shell is generally made of plastic material to meet the design requirements of diverse and beautiful shapes; the inner tank can be a metal tank or a plastic tank according to needs.

[0073] In addition, for the heat insulation layer formed between the shell and the inner tank, common heat insulation materials include: asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good heat insulation effect, the heat insulation layer is usually formed by foaming.

[0074] Among them, for the inner tank with a metal body, due to the influence of water quality, the inside of the inner tank is prone to corrosion. Therefore, 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] Since magnesium is the metal with the lowest potential in the electrochemical series and is non-toxic physiologically. Therefore, it is very ideal to use it to make a magnesium rod to protect the inner tank. The size of the magnesium rod is directly related to the length of time to protect the inner tank and the size of the protection effect. The larger the magnesium rod, the better the protection effect and the longer the protection time.

[0076] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to transport cold water into the water storage cavity formed in the water tank, and 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 wires, magnetic energy, or silicon tube heating can be adopted to heat the water stored in the water storage cavity.

[0078] For the electronic control board, it is used to receive the detection signals sent by relevant sensors (such as water temperature sensors, flow sensors). At the same time, it controls the on-off operation of the electric heating component.

[0079] When the electric water heater is working, the electronic 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 electronic control board controls the electric heating component to cut off the power.

[0080] Reference Figures 1-5 , this application proposes a water heater, which specifically includes a housing 100, an inner tank assembly 200, a water inlet assembly 300, a water outlet assembly 400, and a sewage discharge assembly 600. The water inlet assembly 300, the water outlet assembly 400, and the sewage discharge assembly 600 are all arranged below the housing 100 and extend into the inner tank assembly 200.

[0081] Specifically, an installation cavity is formed inside the housing 100. A first end cover and a second end cover are respectively arranged at both ends of the housing 100 to block both ends of the housing 100.

[0082] The sewage discharge assembly 600 is connected to the bottom of the inner tank assembly 200 and is used to discharge impurities such as scale precipitated in the inner tank assembly 200.

[0083] The inner tank assembly 200 is arranged in the installation cavity. The inner tank assembly 200 includes at least one inner tank, and a heating cavity is formed in the inner tank.

[0084] The water inlet assembly 300, the water outlet assembly 400, and the sewage discharge assembly 600 are all fixed on the housing 100 and extend upward into the heating cavity of the inner tank.

[0085] The water inlet assembly 300 includes a water inlet connector 310 and a water inlet pipe 320. The top of the water inlet connector 310 is connected to the outer wall of the inner tank, and the water inlet pipe 320 is connected to the water inlet connector 310. The water outlet end of the water inlet pipe 320 extends to a lower position of the inner tank.

[0086] The water outlet assembly 400 includes a water outlet connector 410 and a water outlet pipe 420. The top of the water outlet connector 410 is connected to the outer wall of the inner tank, and the water outlet pipe 420 is connected to the water outlet connector 410. The water inlet end of the water outlet pipe 420 extends to an upper position of the inner tank.

[0087] The sewage discharge assembly 600 is specifically connected to the lowest position of the side wall of the inner tank to completely discharge the water and impurities in the inner tank.

[0088] In order to ensure that the air pressure in the heating cavity is balanced with the outside while discharging sewage, the water heater involved in the present application further includes an air inlet member 500.

[0089] The air inlet member 500 is connected between the sewage discharge assembly 600 and the water outlet assembly 400. When the sewage component works, outside air is input into the heating cavity through the sewage pipe, the air inlet member 500 and the water outlet pipe 420 to avoid problems such as too low air pressure in the heating cavity, reduced sewage discharge speed, and incomplete sewage discharge.

[0090] Reference Figure 6 Specifically, a sewage discharge adapter 630 is provided below the sewage discharge assembly 600. The sewage discharge adapter 630 is specifically a three-way member. In addition to an interface for connecting to the bottom of the sewage discharge assembly 600, a sewage discharge interface 631 and a ventilation port 632 are formed on the sewage discharge adapter 630. The sewage discharge interface 631 is located at the bottom of the sewage discharge adapter 630 for externally connecting a sewage pipe, and the ventilation port 632 is arranged at an angle on the side wall of the sewage discharge adapter 630 and extends towards the water outlet assembly 400.

[0091] The water outlet connector 410 is further connected with a water outlet adapter 430. The water outlet adapter 430 is also a three-way member, including a connection interface 431, a water outlet interface 432, and an air inlet interface 433. The connection interface 431 and the water outlet interface 432 are oppositely arranged and are respectively located at the top and bottom of the water outlet adapter 430. The water outlet adapter 430 is connected to the water outlet connector 410 through the connection interface 431 and is connected to the water using terminal through the water outlet interface 432.

[0092] The air inlet interface 433 is arranged at an angle on the side wall of the water outlet adapter 430, and the air inlet member 500 is connected between the air inlet interface 433 and the ventilation port 632.

[0093] The vent 632 and the air inlet interface 433 can be on the same horizontal plane in the installed state. Alternatively, the height of the air inlet interface 433 on the water outlet adapter 430 can be higher than the height of the vent 632, and it is ensured that the axes of the vent 632 and the air inlet interface 433 are in the same straight line, so as to avoid gas from being mixed into the sewage when the gas is transported from the vent 632 to the air inlet interface 433 during the sewage discharge process.

[0094] When the user uses water normally, the air inlet member 500 and the sewage discharge assembly 600 are in the closed state. The water heater inputs low-temperature water from the water inlet assembly 300 and outputs high-temperature water to the water-using terminal from the water outlet assembly 400.

[0095] During sewage discharge, the water outlet interface 430 at the end of the water outlet adapter 430 is closed, the sewage discharge assembly 600 is opened, and the water inlet member 500 is opened; the sewage in the heating cavity is output from the sewage discharge pipe through the sewage discharge assembly 600. During the sewage discharge process, the gas enters the air inlet member 500 from the vent 632 through the sewage discharge pipe and finally enters the inner tank through the water outlet assembly 400 to balance the air pressure between the heating cavity of the inner tank and the outside, ensuring smooth drainage and thorough sewage discharge.

[0096] The water heater presets the sewage discharge assembly 600 on the water heater. When using water and discharging sewage normally, the user only needs to operate the corresponding switch to realize the conversion between using water and discharging sewage. The user operation is simple and convenient, and the use effect is good.

[0097] In some embodiments of the present application, the air inlet member 500 can be connected between the air inlet interface 433 and the vent 632 after the sewage discharge adapter 630 and the water outlet adapter 430 are connected.

[0098] The air inlet member 500 is a two-way member, and its two ends are respectively a first end 510 and a second end 520.

[0099] In some embodiments of the present application, in order to avoid interference during connection, the first end 510 of the air inlet member 500 involved in the present application is connected to the air inlet interface 433 or the vent 632 by means of threaded connection, and the second end 520 of the air inlet member 500 is connected to the vent 632 or the air inlet interface 433 through an adapter sleeve 540.

[0100] Taking the first end 510 of the air inlet member 500 being connected to the air inlet interface 433 by means of threaded connection and the second end 520 being connected to the vent 632 through an adapter sleeve 540 as an example, the connection process of the air inlet member 500 will be described in detail:

[0101] An outer connection portion 530 extending outward is formed on the outer wall of the second end 520 of the intake member 500. One end of the adapter sleeve 540 is provided with an inner connection portion 541 extending toward the center direction. An internal thread is formed at one end of the adapter sleeve 540 away from the inner connection portion 541 for connection with the ventilation port 632.

[0102] The size of the formed inner connection portion 541 is larger than the outer diameter size of the first end 510 of the intake member 500. The adapter sleeve 540 is pre-sleeved on the outside of the intake member 500 from the first end 510 of the intake member 500.

[0103] An external thread is formed at the first end 510 of the intake member 500, and an internal thread is formed in the intake interface 433. The first end 510 of the intake member 500 is connected in the intake interface 433 by threaded connection.

[0104] The adapter sleeve 540 moves from the first end 510 of the intake member 500 toward the second end 520 direction so that the inner connection portion 541 and the outer connection portion 530 are cooperatively connected. Specifically, the inner connection portion 541 abuts against the side of the outer connection portion 530 close to the first end 510. Then, one end of the adapter sleeve 540 away from the inner connection portion 541 is connected to the ventilation port 632 by threaded connection.

[0105] In this connection method, during the connection process of the intake member 500 with the intake interface 433 and the ventilation port 632 at both ends, it can not only achieve a tight connection to avoid gas or liquid leakage, but also avoid interference with the intake interface 433 and the ventilation port 632 at both ends.

[0106] Of course, the intake member 500 can also be connected to the intake interface 433 and the ventilation port 632 at both ends through other adapter parts, which will not be elaborated here.

[0107] In some embodiments of the present application, a water outlet switch member (not shown) is further provided on the water outlet interface 432. When using water, the water outlet switch member is in an open state; when discharging sewage, the water outlet switch member is in a closed state.

[0108] Reference Figure 6 、 Figure 7 , in some embodiments of the present application, the sewage discharge assembly 600 specifically includes a sewage discharge joint 610 and a sewage discharge valve group 620. The upper end of the sewage discharge joint 610 is connected to the heating inner cavity of the inner tank, and the lower end is connected to the sewage discharge valve group 620. A sewage discharge adapter 630 is connected to the sewage discharge valve group 620, and the sewage discharge valve group 620 is used to control the switch of the sewage discharge assembly 600.

[0109] The sewage discharge valve group 620 includes a sewage discharge valve body 621, a sewage discharge valve core 622 and a knob part 810. The sewage discharge valve core 622 is connected inside the sewage discharge valve body 621. The knob part 810 is connected to the sewage discharge valve core 622 through a sewage discharge valve shaft 623. The knob part 810 is used to control the rotational position of the sewage discharge valve core 622 relative to the sewage discharge valve body 621 to control the on-off of the sewage discharge valve group 620.

[0110] Combined with Figure 9 , the upper end of the sewage discharge valve body 621 is connected to the sewage discharge joint 610. Specifically, a buckle part 6212 is formed on the outer wall of the sewage discharge valve body 621, a clamping part 633 is formed on the sewage discharge adapter 630, a valve body connecting part 6211 is formed at the bottom of the sewage discharge valve body 621. After the sewage discharge adapter 630 is sleeved outside the valve body connecting part 6211, the clamping part 633 is connected to the buckle part 6212 by means of rotary clamping.

[0111] When sewage discharge is required, the user or operator connects the sewage discharge pipe to the sewage discharge valve group 620, rotates the knob part 810 to the open position, and discharges the water in the heating inner cavity through the sewage discharge valve group 620 and the sewage discharge pipe group.

[0112] Combined with Figure 10 , in order to facilitate user operation, a rotary handle 813 extending outwards is formed on the knob part 810.

[0113] Specifically, referring to Figure 8 , the sewage discharge adapter 630 includes an upper connecting part 6301 and a lower connecting part 6302, and the upper connecting part 6301 and the lower connecting part 6302 are integrally formed.

[0114] The sewage discharge adapter 630 is connected to the lower end of the sewage discharge valve body 621 through the upper connecting part 6301. The inner wall size of the upper connecting part 6301 is adapted to the outer wall size of the sewage discharge valve body 621, and the upper connecting part 6301 is sleeved on the outer wall of the sewage discharge valve body 621.

[0115] A sealing part 660 is formed between the bottom of the sewage discharge valve body 621 and the upper connecting part 6301 to prevent sewage leakage.

[0116] The clamping part 633 is formed above the upper connecting part 6301. The number of the clamping parts 633 is at least two, and the clamping parts 633 are dispersedly arranged along the circumferential side of the upper connecting part 6301 to improve the connection stability.

[0117] The buckle part 6212 is arranged on the side wall of the sewage discharge valve body 621 and corresponds to the clamping part 633 one by one.

[0118] Specifically, a clamping groove portion 6331 with an opening on one side is formed on each clamping portion 633. Along the rotation direction of the sewage discharge adapter 630, each clamping groove portion 6331 is located on the same side of the corresponding clamping portion 633, so that each clamping groove portion 6331 is synchronously connected to or separated from the corresponding clamping portion 6212.

[0119] During installation, the upper connection portion 6301 is sleeved on the outer wall of the sewage discharge valve body 621. The clamping portion 6212 is located on one side of the clamping portion 633. Then, the sewage discharge adapter 630 is rotated to connect the clamping groove portion 6331 to the corresponding clamping portion 6212.

[0120] That is, the clamping portion 6212 is connected into the clamping groove portion 6331 as the sewage discharge adapter 630 rotates, realizing the one-to-one corresponding connection between the clamping portion 6212 and the clamping portion 633.

[0121] During connection, only need to sleeve the sewage discharge adapter 630 on the outside of the sewage discharge valve body 621, rotate the sewage discharge adapter 630, and connect the clamping portion 633 to the clamping portion 6212 to realize the connection between the sewage discharge pipe group and the sewage discharge valve group 620. This connection method is simple and convenient to operate, and can avoid the risk of the sewage discharge pipe group falling off under the impact of water flow, with higher safety.

[0122] The sewage discharge pipe is pre-connected to the sewage discharge interface 631. Or, when sewage discharge is not required, the sewage discharge pipe can be disassembled. Correspondingly, when the sewage discharge pipe is pre-connected to the sewage discharge interface 631, the knob portion 810 for controlling the sewage discharge valve group is also exposed outside the electric shock prevention wall structure 700 for the convenience of user operation. When the sewage discharge pipe is designed to be detachable, considering the aesthetics of the water heater, a cover plate 710 can be provided on the electric shock prevention wall structure 700 to cover the sewage discharge assembly 600 inside the electric shock prevention wall structure 700 after the sewage discharge pipe is disassembled.

[0123] Combined again Figure 7 , the whole sewage discharge valve body 621 is a tubular structure, 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 sewage discharge valve core 622 is similar to a sphere, and the sewage discharge valve core 622 is rotatably connected in the valve chamber.

[0124] A valve port 6213 is formed on the side wall of the sewage discharge valve body 621. A valve shaft is connected to the knob portion 810, and the valve shaft passes through the valve port 6213 to be connected to the sewage discharge valve core 622.

[0125] The shape of the valve port 6213 is circular, and the shape of the valve shaft is non-circular. Shaft holes 811 adapted to the shape of the valve shaft are respectively formed on the sewage discharge valve core 622 and the knob portion 810. Both ends of the valve shaft are respectively connected to the sewage discharge valve core 622 and the knob portion 810. When the knob portion 810 rotates, the sewage discharge valve core 622 rotates in the valve chamber driven by the valve shaft.

[0126] A through channel is formed in the sewage discharge valve core 622. When the sewage discharge valve core 622 rotates to a position where both ends of the internal channel are respectively communicated with both ends of the sewage discharge valve body 621, at this time, the sewage discharge valve group 620 is in an open state, and the water in the heating cavity can be discharged through the sewage discharge joint 610 and the sewage discharge valve group 620. Otherwise, the sewage discharge valve group 620 is in a closed state.

[0127] In order to limit the rotation range of the knob part 810, a limiting part 812 is formed on the knob part 810, and a limiting cooperation part 6214 is formed on the outer wall of the sewage discharge valve body 621.

[0128] In some embodiments of the present application, refer to 9, Figure 10 , the limiting part 812 is an arc-shaped groove formed on the knob part 810, the limiting cooperation part 6214 is a convex part formed outside the valve port 6213, and the limiting cooperation part 6214 is connected inside the limiting part 812.

[0129] When the sewage discharge valve group 620 is in an open state, the knob part 810 rotates to the first end 510 of the limiting part 812 to be in contact connection with the limiting cooperation part 6214. When the sewage discharge valve group 620 is in a closed state, the knob part 810 rotates to the second end 520 of the limiting part 812 to be in contact connection with the limiting cooperation part 6214.

[0130] In other words, during the opening and closing process of the knob part 810, the limiting cooperation part 6214 on it moves inside the limiting part 812, and the limiting part 812 plays a role in guiding and limiting the rotation of the knob part 810, so that the opening and closing positions of the sewage discharge valve core 622 are more accurate.

[0131] Refer to again Figure 7 , in some embodiments of the present application, the sewage discharge valve body 621 has an upper and lower open structure, and a lining kit 640 is further provided above the sewage discharge valve body 621. A through-flow channel penetrating up and down is formed in the lining kit 640 for communicating the sewage discharge joint 610 and the sewage discharge valve body 621.

[0132] The lining kit 640 is mainly used to facilitate the installation of the sewage discharge valve core 622. The opening size of the upper side of the sewage discharge valve body 621 is larger than that of the lower side. During installation, first install the sewage discharge valve core 622 from the upper side of the sewage discharge valve body 621 into the valve chamber, and then connect the lining kit 640 above the sewage discharge valve body 621 to limit the sewage discharge valve core 622.

[0133] The lining kit 640 plays a role in limiting the sewage discharge valve core 622. During installation, first install the sewage discharge valve core 622 from top to bottom into the valve chamber, and then connect the lining kit 640 above the sewage discharge valve body 621 to be in contact connection with the sewage discharge valve core 622 to limit the position of the sewage discharge valve core 622 so that the sewage discharge valve core 622 rotates in the valve chamber.

[0134] The lining kit 640 is connected to the sewage discharge joint 610 through a locking member 650. A clamping convex portion 651 extending inward is formed at the lower end of the locking member 650. A connecting convex portion extending outward is also formed on the outer wall of the lining kit 640. The clamping convex portion 651 is clamped below the connecting convex portion, and then the locking member 650 is connected to the outer wall of the sewage discharge joint 610 through an internal thread formed above.

[0135] A protective cover 670 with an opening facing downward is further provided outside the sewage discharge joint 610 to protect the sewage discharge assembly 600.

[0136] Reference Figure 8 , in some embodiments of the present application, the sewage pipe is sleeved on the lower connecting portion 6302 of the sewage transfer joint 630 by a tight fit.

[0137] Specifically, a plurality of annular sealing convex portions are spaced apart on the outer wall of the lower connecting portion 6302 to improve the tightness of the connection between the sewage pipe and the lower connecting portion 6302.

[0138] In some embodiments of the present application, an air inlet channel is formed in the air inlet member 500, and an air vent valve group is provided on the air inlet member 500. The air vent valve group is used to control the on-off of the air inlet channel.

[0139] Similarly, the air vent valve group includes an air vent valve core and a control portion 820. An air vent valve chamber is formed in the air inlet channel. The air vent valve core is installed in the air vent valve chamber, and the control portion 820 is connected to the outside of the air inlet member 500.

[0140] The air vent valve core is installed in the air vent valve chamber, and the control portion 820 is connected to the air vent valve core. Specifically, an air passage is formed in the air vent valve core, and the control portion 820 controls the rotation of the air vent valve core in the air vent valve body, thereby controlling the on-off of the air passage and the air inlet channel.

[0141] At least part of the air vent valve chamber is spherical, and the outer shape of the air vent valve core is also spherical, and it rotates in the air vent valve chamber to control the on-off of the air flow channel.

[0142] The control portion 820 is installed on the side wall of the air vent valve body and is connected to the air vent valve core through a valve rod.

[0143] An installation portion is provided on the side wall of the air inlet member 500, and an installation hole communicating with the air vent valve chamber is formed on the installation portion. The valve rod passes through the installation hole and is connected to the control portion 820 and the air vent valve core at both ends respectively.

[0144] The mounting holes are circular, and the cross-section of the valve stem is non-circular, such as square, oval, etc. Socket portions 822 adapted to the cross-sectional shape of the valve stem are formed on both the control portion 820 and the valve core. The two ends of the valve stem are respectively inserted into the socket portions 822 of the control portion 820 and the valve core to enable the control portion 820 to control the rotation of the ventilation valve core.

[0145] A stop portion 550 is formed on the mounting portion, and a limit convex portion 823 is formed on the control portion 820. The limit convex portion 823 is configured such that in the open and closed states of the control portion 820, the corresponding positions of the limit convex portion 823 and the stop portion 550 are in contact.

[0146] In some embodiments of the present application, the stop portion 550 includes at least one stop end face formed on the mounting portion. For example, the stop portion 550 includes two relatively arranged stop end faces.

[0147] The number of the limit convex portions 823 is equal to that of the stop end faces. Corresponding to the two stop end faces, two relatively arranged limit convex portions 823 are formed on the control portion 820.

[0148] A first limit face 8231 and a second limit face 8232 are formed on the limit convex portion 823.

[0149] The first limit face 8231 and the second limit face 8232 are configured such that in the open state, the control portion 820 rotates until the first limit face 8231 contacts the stop end face, and in the closed state, the control portion 820 rotates until the second limit face 8232 contacts the stop end face.

[0150] A hand-held portion 821 is further provided on the control portion 820 to facilitate user operation.

[0151] A ventilation valve group is provided on the water heater involved in the present application, which is used to introduce air into the inner tank through the drain pipe when the water heater drains water, so as to balance the air pressure between the heating inner cavity of the inner tank and the outside, ensure smooth drainage and thorough sewage discharge.

[0152] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection 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. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0153] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions required to be protected by the present utility model.

Claims

1. A water heater, characterized in that, Comprising: An outer housing, within which an installation inner cavity is formed; An inner tank assembly, which includes at least one inner tank, and the inner tank is installed in the installation inner cavity; A water outlet assembly, which includes a water outlet joint and a water outlet pipe connected to the water outlet joint, the water outlet joint is connected to the outer housing, and the water outlet pipe extends into the heating inner cavity of the inner tank; A sewage discharge assembly, which is connected to the heating inner cavity of the inner tank, a sewage discharge adapter is arranged below the sewage discharge assembly, and a sewage discharge interface and a ventilation port are formed on the sewage discharge adapter, and the sewage discharge interface is used for externally connecting a sewage discharge pipe; Wherein, the water outlet joint is further connected to a water outlet adapter, and a water outlet interface and an air inlet interface are formed on the water outlet adapter, the water outlet interface is used for connecting to a water using terminal, and the air inlet interface is connected to the ventilation port through an air inlet component.

2. The water heater according to claim 1, wherein The first end of the air inlet component is connected to the ventilation port or the air inlet interface by means of threaded connection, and the second end of the air inlet component is connected to the air inlet interface or the ventilation port through an adapter sleeve.

3. The water heater according to claim 2, wherein An outwardly extending outer connection portion is formed on the outer wall of the second end of the air inlet component, an inwardly extending inner connection portion is arranged at one end of the adapter sleeve, and the inner connection portion and the outer connection portion are cooperatively connected to achieve detachable connection between the adapter sleeve and the second end of the air inlet component; The other end of the adapter sleeve is threadedly connected to the sewage discharge interface or the ventilation port.

4. The water heater according to claim 1, wherein A water outlet switch component is further arranged on the water outlet interface. When using water, the water outlet switch component is in an open state; when discharging sewage, the water outlet switch component is in a closed state.

5. The water heater according to claim 1, wherein 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 heating inner cavity of the inner tank, the lower end is connected to the sewage discharge valve group, the sewage discharge adapter is connected to the sewage discharge valve group, and the sewage discharge valve group is used to control the opening and closing of the sewage discharge assembly.

6. The water heater according to claim 5, wherein The sewage discharge valve group includes a sewage discharge valve body, a sewage discharge valve core and a knob portion. The two ends of the sewage discharge valve body are respectively connected to the sewage discharge joint and the sewage discharge adapter. A sewage discharge valve chamber is formed in the sewage discharge valve body, the sewage discharge valve core is rotatably connected in the sewage discharge valve chamber, and the knob portion is connected to the sewage discharge valve core.

7. The water heater according to claim 6, wherein The sewage discharge adapter includes an upper connection portion and a lower connection portion. The upper connection portion is sleeved on the lower end of the sewage discharge valve body; the lower connection portion is used for connecting to a sewage discharge pipe; A clamping portion extending toward the sewage valve body is formed on the outer wall of the upper connecting portion. The number of the clamping portions is at least two. A buckling portion corresponding to each clamping portion is formed on the side wall of the sewage valve body. A clamping groove portion with an opening on one side is formed on each clamping portion. Along the rotation direction of the adapter, each clamping groove portion is located on the same side of the corresponding clamping portion, so that each clamping groove portion is synchronously connected to or separated from the corresponding buckling portion.

8. The water heater according to claim 6, wherein A valve port is formed on the side wall of the sewage valve body. A valve shaft is rotatably connected to the valve port. Two ends of the valve shaft are respectively connected to the knob portion and the sewage valve core. A limiting portion is formed on the knob portion. A limiting and mating portion is formed on the outer wall of the sewage valve body for limiting the rotation range of the knob portion.

9. The water heater according to claim 1, wherein An air inlet channel is formed in the air inlet member. An air vent valve group is arranged on the air inlet member. The air vent valve group is used for controlling the on-off of the air inlet channel. The air vent valve group includes an air vent valve core and a control portion connected to the air vent valve core. An air vent valve chamber is formed in the air inlet channel. The air vent valve core is installed in the air vent valve chamber. The control portion is connected to the outside of the air inlet member.

10. The water heater according to claim 9, wherein An installation portion is arranged on the side wall of the air inlet member. An installation hole communicating with the air vent valve chamber is formed in the installation portion. A valve rod is rotatably connected in the installation hole. Two ends of the valve rod are respectively connected to the control portion and the air vent valve core.

Images