Inner container assembly and water heater

Abstract

The utility model discloses an inner container assembly and a water heater, the inner container assembly comprises an inner container, and a heating inner cavity is formed in the inner container; the water inlet pipe set extends into the heating inner cavity, the water inlet pipe set comprises an inner pipe and an outer pipe arranged on the outer side of the inner pipe in a sleeving mode, the free end of the inner pipe and the free end of the outer pipe are each of a closed structure, a buffering inner cavity is formed between the inner pipe and the outer pipe, a first water outlet is formed in the inner pipe, and a second water outlet is formed in the outer pipe; and a water outlet pipe group. Cold water flow in the inner pipe flows into the buffering inner cavity through the first water outlet to be buffered and then flows into the inner container from the second water outlet, disturbance of cold water and hot water in the inner container is reduced, cold water layering is more uniform, and the hot water output rate can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and particularly relates to an inner tank assembly and a water heater. Background Art

[0002] At present, water heaters are commonly used household appliances in people's daily lives. Water heaters are divided into types such as electric water heaters, gas water heaters, heat pump water heaters, and solar water heaters. Electric water heaters are widely used because of their convenience. Among them, electric water heaters can be divided into storage electric water heaters and instant electric water heaters according to the heating power. The storage electric water heater has a water tank, and has characteristics such as a large water output and stable water temperature, and is purchased and used by more families. The cold water entering the water heater enters the inner tank in a jet shape under the action of water pressure. The water flow disturbs the hot water inside the inner tank, and the cold water in the inner tank mixes with the hot water, destroying the cold and hot water stratification and resulting in a low hot water output rate.

[0003] The existing Chinese patent with the application number 201420466784.2 discloses a water heater inlet system, which includes an inner tank, an electric heating tube installed in the inner tank, an inlet pipe and an outlet pipe. One end of the inlet pipe is an inlet, which is arranged outside the inner tank wall. The other end of the inlet pipe is arranged at the bottom inside the inner tank. The other end of the inlet pipe is provided with a water outlet end parallel to the lower wall of the inner tank. The end of the water outlet end is blocked, and the pipe wall of the water outlet end is provided with water outlet holes at intervals. A water blocking piece for preventing cold water from flowing upward is arranged above the water outlet holes, and the water blocking piece is connected to the pipe wall of the water outlet end.

[0004] The above water heater inlet system is provided with a water blocking piece above the water outlet holes. The water blocking piece can make the cold water flow horizontally to both sides of the water outlet end along the gap between the water blocking piece and the lower wall of the inner tank after flowing out of the inlet pipe, preventing the water flow from disturbing the hot water inside the inner tank. However, since the water flow rates from each water outlet hole are different, cold water accumulates at one end of the inlet pipe, resulting in uneven cold water stratification and affecting the hot water output rate of the electric water heater. In view of this, how to design a water heater technology that can make the cold water stratification in the inlet pipe uniform to improve the hot water output rate is the technical problem to be solved by the utility model. Summary of the Invention

[0005] The utility model provides an inner tank assembly and a water heater, which can make the cold water stratification in the inlet pipe uniform to improve the hot water output rate.

[0006] To achieve the above technical purpose, the utility model is realized by adopting the following technical solutions:

[0007] In the first aspect, the utility model provides an inner tank assembly, including:

[0008] An inner tank, in which a heating cavity is formed;

[0009] A water inlet pipe group, the water inlet pipe group extends into the heating inner cavity, the water inlet pipe group includes an inner tube and an outer tube sleeved outside the inner tube, the free ends of the inner tube and the outer tube are both closed structures, a buffer inner cavity is formed between the inner tube and the outer tube, a first water outlet is formed on the inner tube, and a second water outlet is formed on the outer tube;

[0010] A water outlet pipe group extends into the heating inner cavity.

[0011] In some embodiments of the present application, a water retaining member is provided in the buffer inner cavity, and the water retaining member divides the buffer inner cavity into a plurality of parallel sub-chambers along the length direction of the water inlet pipe group, and the first water outlet is formed on the inner tube corresponding to each sub-chamber, and the second water outlet is formed on the outer tube corresponding to each sub-chamber.

[0012] In this way, the cold water in the inner tube flows through the first water outlet and flows into each sub-chamber, and flows into the inner tank from the second water outlet. Under the blocking effect of the water retaining member, the cold water on one side of the water retaining member flows obliquely downward toward the free end of the inner tube, and the cold water on the other side of the water retaining member flows obliquely downward in the direction away from the free end, thereby changing the flow direction, avoiding cold water accumulation, and making the cold water stratification more uniform, which is beneficial to improving the hot water output rate.

[0013] In some embodiments of the present application, the first water outlets are arranged at intervals on both side walls of the inner tube.

[0014] By setting the first water outlet at intervals on the two side walls of the inner tube, the water flows toward the inner wall of the outer tube, which can reduce the impact force of the water flow. When the water flows into the heating cavity, the impact on the inner tank wall can be reduced, and the stirring effect on the hot water in the heating cavity is reduced, so that a smooth and stable stratification is formed between the cold and hot water, which is beneficial to improving the hot water output rate.

[0015] In some embodiments of the present application, the second water outlets are arranged at intervals on the bottom wall of the outer tube.

[0016] By arranging the second water outlet at intervals on the bottom wall of the outer tube, the cold water flow can be diverted, the water flow velocity can be reduced, and the accumulation of cold water can be reduced. At the same time, the second water outlet is toward the bottom wall of the outer tube, the cold water flow flows toward the bottom of the heating cavity, and the hot water is squeezed upward, so that the cold water and hot water are clearly stratified.

[0017] In some embodiments of the present application, the water retaining member is located below the inner tube.

[0018] By arranging the water baffle below the inner tube, since the cold water flow obliquely flows from the second water outlet on the outer tube towards the bottom wall of the inner tank, by arranging the water baffle, on one side of the water baffle, in the direction towards the free end of the inner tube, the cold water flow discharges downward obliquely, and on the other side of the water baffle, in the direction away from the free end of the inner tube, the cold water flow discharges downward obliquely, thereby changing the flow direction of the cold water flow and avoiding cold water accumulation.

[0019] In some embodiments of the present application, the water baffle has a crescent-shaped structure.

[0020] By setting the water baffle as a crescent-shaped structure, it is convenient for the water baffle to be in contact with the inner tube and the outer tube in the buffer cavity, improving the stability of the overall structure.

[0021] In some embodiments of the present application, the water inlet pipe group further includes:

[0022] A filtering device, the filtering device is arranged in the buffer cavity and covers above the second water outlet, and the filtering device is configured to filter the water flow flowing through the second water outlet.

[0023] By arranging a filtering device in the buffer cavity, the filtering device covers above the second water outlet, and the filtering device is used to filter the water flow flowing through the water inlet pipe group, so that the water entering the inner tank can be filtered, thereby reducing impurities and being beneficial to extending the service life of the water heater.

[0024] In some embodiments of the present application, the aperture of the first water outlet is smaller than the aperture of the second water outlet.

[0025] By setting the aperture of the first water outlet to be smaller than the aperture of the second water outlet, the larger aperture of the second water outlet can make the cold water flow enter the heating cavity more smoothly and reduce the turbulent flow.

[0026] In some embodiments of the present application, the inner tube includes:

[0027] A first pipe section, the first pipe section is close to the bottom wall of the inner tank;

[0028] A second pipe section, the second pipe section is fixedly connected to the inner tank;

[0029] A third pipe section, the third pipe section is bent and connected between the first pipe section and the second pipe section;

[0030] Wherein, the outer tube is sleeved outside the first pipe section, and the first water outlet is located on the first pipe section.

[0031] By including a first pipe section, a second pipe section, and a third pipe section in the inner pipe, with the first pipe section close to the bottom wall of the inner tank, the second pipe section fixedly connected to the inner tank, the third pipe section being bent and connected between the first pipe section and the second pipe section, and the outer pipe sleeved on the outside of the first pipe section, and the first water outlet located in the first pipe section, in this way, the first pipe section is in the cold water area of the inner tank, and the cold water in the inner pipe sequentially passes through the second pipe section, the third pipe section, and the first pipe section and enters the buffer inner cavity, and then enters the heating inner cavity through the second water outlet on the outer pipe.

[0032] In a second aspect, the present invention provides a water heater, comprising:

[0033] A housing in which an installation inner cavity is formed;

[0034] The inner tank assembly as described in any one of the embodiments of the first aspect above, and the inner tank assembly is connected to the installation inner cavity.

[0035] Compared with the prior art, the advantages and positive effects of the present invention are: by providing an inner tank, a water inlet pipe group, and a water outlet pipe group, a heating inner cavity is formed in the inner tank, both the water inlet pipe group and the water outlet pipe group extend into the heating inner cavity, the water inlet pipe group includes an inner pipe and an outer pipe, the free ends of the inner pipe and the outer pipe are both of a closed structure, a buffer inner cavity is formed between the inner pipe and the outer pipe, a first water outlet is formed on the inner pipe, and a second water outlet is formed on the outer pipe. In this way, the cold water in the inner pipe flows through the first water outlet and into the buffer inner cavity for buffering, and then flows into the inner tank from the second water outlet, reducing the disturbance to the cold and hot water in the inner tank, making the cold water stratification more uniform, and being beneficial to improving the hot water output rate. Description of the Drawings

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

[0037] Figure 1 It is a schematic diagram of the internal structure of an embodiment of the inner tank assembly provided by the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of an embodiment of the water inlet pipe group provided by the present invention;

[0039] Figure 3 It is an exploded view of the water inlet pipe group provided by the present invention;

[0040] Figure 4 It is a cross-sectional view of an embodiment of the water inlet pipe group provided by the present invention;

[0041] Figure 5 is Figure 4 a partial enlarged schematic view of area A in

[0042] Figure 6 a schematic structural view of an embodiment of a water retaining member provided by the present utility model;

[0043] Figure 7 a schematic internal structural view of another embodiment of an inner liner assembly provided by the present utility model.

[0044] Description of reference numerals:

[0045] 1. First inner liner; 11. Heating inner cavity;

[0046] 2. Second inner liner;

[0047] 3. Water inlet pipe group; 31. Inner pipe; 311. First water outlet; 312. First pipe section; 313. Second pipe section; 314. Third pipe section; 32. Outer pipe; 321. Second water outlet; 33. Buffer inner cavity; 34. Water retaining member; 35. Filter device; 36. Sealing plastic sleeve;

[0048] 4. Water outlet pipe group. Specific embodiments

[0049] 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.

[0050] 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 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 thus cannot be construed as a limitation of 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.

[0051] In the present utility model, unless otherwise clearly specified or limited, the terms "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. 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 circumstances.

[0052] In the present utility model, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates 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 that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0053] 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, the components and settings 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. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings 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.

[0054] 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.

[0055] 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. 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.

[0056] 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 body or a plastic tank body according to needs.

[0057] In addition, a heat insulation layer is formed between the outer shell and the inner liner. Common heat insulation materials include asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technologies, in order to obtain good heat insulation effects, a heat insulation layer is usually formed by foaming.

[0058] Among them, for the inner liner with a metal body, due to the influence of water quality, corrosion is likely to occur inside the inner liner. Therefore, a magnesium rod is also arranged on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0059] 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 the magnesium rod to protect the inner liner. The size of the magnesium rod is directly related to the length of the time for protecting the inner liner and the size of the protection effect. The larger the magnesium rod, the better the protection effect and the longer the protection time.

[0060] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to convey 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.

[0061] 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.

[0062] For the electric 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.

[0063] When the electric water heater works, 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.

[0064] In the first aspect, as shown in Figures 1 to 7 the embodiments of the present disclosure provide an inner liner assembly, which includes an inner liner, a water inlet pipe group 3 and a water outlet pipe group 4.

[0065] A heating inner cavity 11 is formed inside the inner liner. The inner liner assembly is used to be installed on a water heater. The water heater can be a single-tank water heater or a double-tank water heater. The inner liner assembly can be used to fill cold water into the water heater or to convey hot water to a water using terminal. A connection port is formed on the inner liner of the water heater, and a connection seat is arranged on the inner liner assembly. The inner liner assembly extends into the heating inner cavity 11 through the connection port, and the connection seat is used for fixing and sealing between the inner liner assembly and the connection port.

[0066] Taking a double-tank water heater as an example for illustration, the double-tank water heater includes a shell and an inner tank disposed within the shell. The inner tank includes a first inner tank 1 and a second inner tank 2 that are interconnected. The first inner tank 1 is located above the second inner tank 2, and a communication portion is formed between the first inner tank 1 and the second inner tank 2.

[0067] The outlet pipe group 4 is connected above the heating cavity 11 of the inner tank, and the inlet pipe group 3 is connected below the heating cavity 11 of the inner tank, ensuring that the water at a lower temperature in each inner tank is input to the bottom of the heating cavity 11, and the heated water at a higher temperature is output from the top of the heating cavity 11.

[0068] Both the inlet pipe group 3 and the outlet pipe group 4 adopt the side-inlet method, that is, the inlet pipe group 3 and the outlet pipe group 4 are connected to the heating cavity 11 from the head end cover of the inner tank.

[0069] Among them, the inlet pipe groups 3 in the first inner tank 1 and the second inner tank 2 are the same, and there is no difference between them.

[0070] Combined Figure 2 and Figure 3 As shown, the inlet pipe group 3 extends into the heating cavity 11 and bends towards the bottom wall of the inner tank. The inlet pipe group 3 includes an inner pipe 31 and an outer pipe 32 sleeved outside the inner pipe 31. The free ends of both the inner pipe 31 and the outer pipe 32 are of a closed structure; a buffer cavity 33 is formed between the inner pipe 31 and the outer pipe 32, and a water-blocking member 34 is provided in the buffer cavity 33. The water-blocking member 34 divides the buffer cavity 33 into a plurality of juxtaposed sub-chambers along the length direction of the inlet pipe group 3. A first water outlet 311 is formed on the inner pipe 31 corresponding to each sub-chamber, and a second water outlet 321 is formed on the outer pipe 32.

[0071] In this way, the free ends of both the inner pipe 31 and the outer pipe 32 are of a closed structure, and cold water will not flow into the inner tank from the free ends of the inner pipe 31 and the outer pipe 32; a first water outlet 311 is formed on the inner pipe 31, and a second water outlet 321 is formed on the outer pipe 32. Cold water enters the buffer cavity 33 from the inner pipe 31 and then is output from the second water outlet 321 on the outer pipe 32. The cold water flow is split, and the impact force is reduced.

[0072] In the case where the water retaining member 34 is not provided, the cold water flows, under the action of water pressure, in the process of being output from the second water outlet 321 on the outer tube 32, and the cold water flows obliquely downward toward the free end of the inner tube 31. Under the action of water pressure, the flow velocity of the water flow near the free end of the inner tube 31 is relatively large, which will cause the cold water to accumulate near the free end of the inner tube 31. By providing a water retaining member 34 in the buffer inner cavity 33, on one side of the water retaining member 34, the cold water flows obliquely downward and is discharged toward the free end of the inner tube 31, and on the other side of the water retaining member 34, the cold water flows obliquely downward and is discharged in a direction away from the free end of the inner tube 31, i.e., against the direction of the water flow, thereby partially changing the flow direction of the cold water flow entering the inner tank and dispersing the distribution of the cold water in the inner tank, thereby avoiding the accumulation of cold water in the inner tank.

[0073] The water outlet pipe assembly 4 extends into the heating inner cavity 11 .

[0074] Specifically, by setting an inner tank, a water inlet pipe group 3 and a water outlet pipe group 4, a heating inner cavity 11 is formed in the inner tank, and the water inlet pipe group 3 and the water outlet pipe group 4 both extend into the heating inner cavity 11. The water inlet pipe group 3 includes an inner tube 31 and an outer tube 32. The free ends of the inner tube 31 and the outer tube 32 are both closed structures. A buffer inner cavity 33 is formed between the inner tube 31 and the outer tube 32. A water retaining member 34 is provided in the buffer inner cavity 33. The water retaining member 34 divides the buffer inner cavity 33 into a plurality of parallel sub-chambers along the length direction of the water inlet pipe group 3. A first water outlet is formed on the inner tube 31 corresponding to the sub-chamber 311, a second water outlet 321 is formed on the outer tube 32, so that the cold water in the inner tube 31 flows into the buffer inner cavity 33 through the first water outlet 311, and then flows into the inner tank from the second water outlet 321. Under the blocking effect of the water retaining member 34, the cold water on one side of the water retaining member 34 flows obliquely downward toward the free end of the inner tube 31, and the cold water on the other side of the water retaining member 34 flows obliquely downward in the direction away from the free end, thereby changing the flow direction, avoiding the cold water from accumulating in one direction of the inner cavity, making the cold water stratification more uniform, and being beneficial to improving the hot water output rate.

[0075] Combination Figure 4 and Figure 5 As shown, in some embodiments of the present application, the first water outlets 311 are arranged at intervals on both side walls of the inner tube 31 .

[0076] Specifically, by arranging the first water outlet 311 at intervals on the two side walls of the inner tube 31, the water flows toward the inner wall of the outer tube 32, which can reduce the impact force of the water flow. When the water flow is transported to the heating cavity 11, the impact on the inner tank wall can be reduced.

[0077] In this way, the cold water flow can flow from the first water outlet 311 towards both sides of the inner tube 31 and into the outer tube 32. The multiple cold water flows flowing out from the first water outlet 311 will also collide with each other in the buffer inner cavity 33, causing some of the impact forces to cancel each other out, which can reduce the impact force of the water flow. After the impact force of the water flow is reduced, it is transported into the heating inner cavity 11, reducing the impact on the inner wall of the inner tank and reducing the stirring effect on the hot water in the heating inner cavity 11, so that a gentle and stable stratified layer is formed between the cold water and the hot water, which is beneficial to improving the hot water output rate.

[0078] Exemplarily, the first water outlet 311 is provided with two rows, and the two rows of first water outlets 311 are symmetric about the axial direction of the inner tube 31. In this way, the cold water flow can be discharged stably and evenly from both sides of the inner tube 31.

[0079] In some embodiments of the present application, the second water outlet 321 is arranged at intervals on the bottom wall of the outer tube 32.

[0080] Specifically, by arranging the second water outlet 321 at intervals on the bottom wall of the outer tube 32, the cold water flow in the buffer inner cavity 33 flows out through the second water outlet 321. In this way, the cold water flow can be diverted, reducing the water flow speed and reducing the accumulation of cold water. At the same time, the second water outlet 321 is arranged on the bottom wall of the outer tube 32, and the cold water flow flows towards the bottom of the heating inner cavity 11 and extrudes the hot water upwards, so that the cold water and the hot water are clearly stratified.

[0081] In some embodiments of the present application, the aperture of the first water outlet 311 is smaller than the aperture of the second water outlet 321.

[0082] Under the action of water pressure, the smaller the aperture, the faster the flow rate, and the larger the aperture, the slower the flow rate. By setting the aperture of the first water outlet 311 to be smaller than the aperture of the second water outlet 321, the speed of the cold water flow entering the inner tank can be reduced, and the cold and hot water turbulence can be reduced.

[0083] Combined with Figure 5 As shown, in some embodiments of the present application, the water blocking member 34 is located below the inner tube 31.

[0084] Specifically, by arranging the water blocking member 34 below the inner tube 31, since the cold water flow is inclined to flow from the second water outlet 321 on the outer tube 32 towards the bottom wall of the inner tank, by arranging the water blocking member 34, on one side of the water blocking member 34, in the direction of the free end of the inner tube 31, the cold water flow discharges downward obliquely, and on the other side of the water blocking member 34, in the direction away from the free end of the inner tube 31, the cold water flow discharges downward obliquely, thereby changing the flow direction of the cold water flow and avoiding the accumulation of cold water. Make the cold water enter the inner tank more evenly, reduce the cold and hot water turbulence, thereby improving the hot water output rate and reducing resource waste.

[0085] Combined with Figure 6As shown, in some embodiments of the present application, the water baffle 34 has a crescent structure.

[0086] Specifically, the inner tube 31 and the outer tube 32 are non-concentric tubes. The top end of the inner tube 31 abuts against the outer tube 32. By abutting the top end of the inner tube 31 against the outer tube 32, the volume of the buffer cavity 33 between the inner tube 31 and the outer tube 32 can be increased, so that more cold water can flow into the buffer cavity 33. By setting the water baffle 34 to have a crescent structure, on the one hand, it is convenient for the water baffle 34 to utilize the space, so that the water baffle 34 abuts against the inner tube 31 and the outer tube 32 in the buffer cavity 33, improving the stability of the overall structure.

[0087] In some embodiments of the present application, plugs are provided at the free ends of the inner tube 31 and the outer tube 32, and the plugs seal the free ends of the inner tube 31 and the outer tube 32.

[0088] Combined Figure 5 As shown, in some embodiments of the present application, the water inlet pipe group 3 further includes a filtering device 35.

[0089] The filtering device 35 is arranged in the buffer cavity 33 and covers above the second water outlet 321. The filtering device 35 is configured to filter the water flow passing through the second water outlet 321.

[0090] Specifically, by arranging the filtering device 35 in the buffer cavity 33, the filtering device 35 covers above the second water outlet 321, and the filtering device 35 is used to filter the water flow passing through the second water outlet 321, so that the water entering the inner tank can be filtered, thereby reducing impurities and being beneficial to extending the service life of the water heater.

[0091] In some embodiments of the present application, the filtering device 35 is filled with a purification material, and the purification material can purify the cold water to achieve functions such as scale inhibition, demineralization, and chlorine removal.

[0092] In some embodiments of the present application, the filtering device 35 includes a filter screen.

[0093] Specifically, by setting the filter screen, the filter screen can remove large particle impurities such as sediment and colloid contained in the incoming water, making the water flowing out from the second water outlet 321 cleaner.

[0094] In some embodiments of the present application, the inner tube 31 includes a first tube section 312, a second tube section 313, and a third tube section 314.

[0095] The first tube section 312 is close to the bottom wall of the inner tank;

[0096] The second tube section 313 is fixedly connected to the inner tank;

[0097] The third pipe section 314 is bent and connected between the first pipe section 312 and the second pipe section 313;

[0098] Wherein, the outer pipe 32 is sleeved outside the first pipe section 312, and the first water outlet 311 is located on the first pipe section 312.

[0099] Specifically, by including the inner pipe 31 with the first pipe section 312, the second pipe section 313 and the third pipe section 314, the first pipe section 312 is close to the bottom wall of the inner tank, the second pipe section 313 is fixedly connected to the inner tank, the third pipe section 314 is bent and connected between the first pipe section 312 and the second pipe section 313, the outer pipe 32 is sleeved outside the first pipe section 312, and the first water outlet 311 is located on the first pipe section 312. In this way, the first pipe section 312 is in the cold water area of the inner tank, and the cold water in the inner pipe 31 sequentially enters the buffer inner cavity 33 through the second pipe section 313, the third pipe section 314 and the first pipe section 312, and enters the heating inner cavity 11 through the second water outlet 321 on the outer pipe 32.

[0100] In some embodiments of the present application, the first pipe section 312, the second pipe section 313 and the third pipe section 314 are integrally formed.

[0101] Specifically, by integrally forming the first pipe section 312, the second pipe section 313 and the third pipe section 314, it is convenient for the production and manufacturing of the inner pipe 31 and is beneficial to improving production efficiency.

[0102] In some other embodiments of the present application, a plurality of water blocking members 34 are provided, and the plurality of water blocking members 34 are spaced between the inner pipe 31 and the outer pipe 32.

[0103] Exemplarily, two water blocking members 34 are provided, one is arranged at the middle position of the first pipe section 312, and the other is arranged at the connection between the first pipe section 312 and the third pipe section 314.

[0104] It can be understood that the number and arrangement positions of the water blocking members 34 include but are not limited to the above manner.

[0105] Exemplarily, the water blocking member 34 is clamped between the inner pipe 31 and the outer pipe 32.

[0106] In some embodiments of the present application, a sealing plastic sleeve 36 is further connected to the third pipe section 314 of the inner pipe 31. In the installation state, the sealing plastic sleeve 36 is located between the water inlet connection and the inner pipe 31, and a sealing ring is provided on the sealing plastic sleeve 36.

[0107] The first end of the sealed plastic sleeve 36 is located outside the inner tank. A positioning boss is provided on the outer wall of the first end, and the height of the positioning boss seals the surface of the plastic sleeve 36. In the installed state, the positioning boss is restricted outside the water inlet connection port, which is used to limit the length of the inner pipe 31 extending into the heating cavity 11, prevent the length of the water inlet pipe group 3 connected to the inner tank from being too long, and play a positioning role.

[0108] A plurality of annular assembly ribs are dispersedly arranged on the outer wall of the sealed plastic sleeve 36. The assembly ribs protrude from the surface of the sealed plastic sleeve 36 by a certain height, which is used to keep the sealed plastic sleeve 36 in an interference fit state during the connection with the water inlet connection port.

[0109] To facilitate the assembly of the sealed plastic sleeve 36, a guiding portion is further provided at the second end of the sealed plastic sleeve 36 away from the positioning boss. The guiding portion is an installation surface that tapers along the installation direction of the sealed plastic sleeve 36, which is convenient for the sealed plastic sleeve 36 to be connected into the water inlet connection port.

[0110] Combined Figure 7 As shown, in some other embodiments of the present application, for the application of the inner tank assembly in a single-tank water heater, wherein both the water inlet pipe group 3 and the water outlet pipe group 4 are in the side water inlet mode.

[0111] In a second aspect, the embodiments of the present disclosure provide a water heater, which includes a housing and an inner tank assembly as described in any one of the embodiments of the first aspect above.

[0112] An installation cavity is formed inside the housing;

[0113] The inner tank assembly is connected to the installation cavity. Since it includes the inner tank assembly as described in any one of the embodiments of the first aspect, it has all the beneficial effects thereof, which will not be elaborated here.

[0114] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. 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 utility model. 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.

[0115] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention 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 perform equivalent replacements on 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 invention.

Claims

1. An inner liner assembly, characterized in that, include: An inner tank having a heating cavity formed therein; A water inlet pipe group, the water inlet pipe group extends into the heating inner cavity, the water inlet pipe group includes an inner tube and an outer tube sleeved on the outer side of the inner tube, the top end of the inner tube is in contact with the outer tube, the free ends of the inner tube and the outer tube are both closed structures, a buffer inner cavity is formed between the inner tube and the outer tube, a first water outlet is formed on the inner tube, and a second water outlet is formed on the outer tube; a water retaining member is provided in the buffer inner cavity, the water retaining member divides the buffer inner cavity into a plurality of parallel sub-chambers along the length direction of the water inlet pipe group, the first water outlet is formed on the inner tube corresponding to each sub-chamber, and the second water outlet is formed on the outer tube corresponding to each sub-chamber; A water outlet pipe group extends into the heating inner cavity.

2. The inner container assembly according to claim 1, wherein The first water outlets are arranged at intervals on both side walls of the inner tube.

3. The inner container assembly according to claim 1, characterized in that, The second water outlets are arranged at intervals on the bottom wall of the outer tube.

4. The inner container assembly according to claim 1, wherein The water blocking member is located below the inner tube.

5. The inner container assembly according to claim 4, characterized in that, The water retaining member is in a crescent-shaped structure.

6. The inner container assembly according to claim 1, characterized in that, The water inlet pipe group also includes: A filter device is disposed in the buffer inner cavity and covers the second water outlet, and is configured to filter water flowing through the second water outlet.

7. The inner liner assembly according to claim 1, wherein The aperture of the first water outlet is smaller than the aperture of the second water outlet.

8. The inner container assembly according to claim 1, characterized in that, The inner tube comprises: A first pipe section, wherein the first pipe section is close to the bottom wall of the inner container; a second pipe section, the second pipe section being fixedly connected to the inner container; a third pipe segment, the third pipe segment being bent and connected between the first pipe segment and the second pipe segment; Wherein, the outer pipe is sleeved on the outside of the first pipe section, and the first water outlet is located in the first pipe section.

9. A water heater, characterized in that, include: A housing having a mounting cavity formed therein; The liner assembly according to any one of claims 1 to 8, wherein the liner assembly is connected to the installation cavity.

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