A water heater

Abstract

The utility model relates to domestic appliance technical field discloses a water heater. The water heater includes inner bag, outlet pipe, temperature regulating device and water inlet pipe subassembly, and the inner bag is used for containing water, the outlet pipe includes the first water inlet section and the first outlet section who links, and the first water inlet section is located in the inner bag, and the first outlet section stretches out the inner bag and is connected with the outside water equipment, the outlet end of water inlet pipe subassembly is located in the inner bag, and the inlet end of water inlet pipe subassembly stretches out the inner bag, the temperature regulating device includes water mixing valve and auxiliary heating subassembly, and the water mixing valve has the water inlet and can with the first export and the second export of water inlet intercommunication, the water inlet is connected with the outside water source, the first export is connected with the middle part of the first outlet section intercommunication, and the second export is connected with the inlet end of water inlet pipe subassembly intercommunication, the auxiliary heating subassembly is located in the upstream of water mixing valve, and is configured to heat the water in the first outlet section. The heating efficiency of the water heater is high, energy waste is small, and constant temperature water outlet can be realized.

Description

Technical Field

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

[0002] A water heater is a device that uses various physical principles to raise the temperature of cold water to produce hot water within a certain time. Based on different principles, they can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic water heaters, air source water heaters, and central heating water heaters. Gas water heaters are the most widely used type, but they pose a safety hazard due to incomplete combustion of gas, which can lead to poisoning. Solar water heaters require a large amount of space to install, making them extremely inconvenient for urban residents. Magnetic water heaters, air source water heaters, and central heating water heaters all suffer from complex structures, high costs, and inconvenient maintenance. Electric water heaters, on the other hand, are widely used due to their high safety, convenient installation, and high level of automation; they operate immediately after installation and when plugged in.

[0003] Electric water heaters typically consist of an inner tank, a heating element, and a water outlet pipe. The inner tank holds water, the heating element heats the water, and the water outlet pipe extends from the inner tank to connect to external water-using equipment, providing hot water for showering and washing. However, electric water heaters in this technology often have the following problems during use: 1) To maintain the water in the inner tank at the preset temperature, the heating element needs to be frequently activated, and it needs to heat the entire tank of water to the preset temperature, resulting in low heating efficiency and significant energy waste; 2) A certain amount of water usually accumulates in the part of the water outlet pipe extending from the inner tank. When the user turns the water heater off and then on again, the accumulated water in the outlet pipe flows out first, resulting in a significant temperature drop and affecting the user's water experience.

[0004] Therefore, there is an urgent need to develop a water heater to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a water heater that has high heating efficiency, low energy waste, and can achieve constant temperature water output, thereby improving the user's water experience.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A water heater, comprising:

[0008] Inner liner, which is used to hold water;

[0009] The water outlet pipe includes a first inlet section and a first outlet section connected to each other. The first inlet section is located in the inner tank, and the first outlet section extends out of the inner tank and is connected to an external water-using device.

[0010] A water inlet pipe assembly, wherein the outlet end of the water inlet pipe assembly is located in the inner liner, and the inlet end of the water inlet pipe assembly extends out of the inner liner;

[0011] A temperature control device includes a mixing valve and an auxiliary heating assembly. The mixing valve has an inlet and a first outlet and a second outlet that are connected to the inlet. The inlet is connected to an external water source. The first outlet is connected to the middle of the first outlet section. The second outlet is connected to the inlet end of the inlet pipe assembly. The auxiliary heating assembly is located upstream of the mixing valve and is configured to heat the water in the first outlet section.

[0012] As a preferred embodiment of the water heater provided by this utility model, the auxiliary heating component includes an induction coil wound in a spiral shape outside the first water outlet section and an electromagnetic generator electrically connected to the induction coil.

[0013] As a preferred embodiment of the water heater provided by this utility model, the temperature control device further includes a first temperature detection element, which is disposed on the first water outlet section and located downstream of the mixing valve, for detecting the water temperature at the outlet of the first water outlet section. The mixing valve and the auxiliary heating component are both signal connected to the first temperature detection element.

[0014] And / or, the temperature control device further includes a water flow detection element, which is disposed on the first water outlet section and located upstream of the mixing valve, for detecting the water flow of the first water outlet section, and the mixing valve is signal-connected to the water flow detection element.

[0015] As a preferred embodiment of the water heater provided by this utility model, the water heater further includes a main heating device, which is disposed in the inner tank for heating the water in the inner tank.

[0016] As a preferred embodiment of the water heater provided by this utility model, a second temperature detection element is further provided in the inner tank. The second temperature detection element is used to detect the temperature of the water in the inner tank and is signal-connected to the main heating device.

[0017] As a preferred embodiment of the water heater provided by this utility model, the water inlet pipe assembly includes:

[0018] The water inlet pipe includes a second water inlet section and a second water outlet section connected to each other. The second water outlet section is located in the inner tank and its port is closed. An inner water outlet hole is provided on the side wall of the second water outlet section. The second water inlet section extends out of the inner tank and is connected to the second outlet.

[0019] An inlet pipe is fitted outside the second outlet section, and an outlet hole is provided on the side wall of the inlet pipe, which is offset from the inner outlet hole.

[0020] As a preferred embodiment of the water heater provided by this utility model, the outlet water hole is located below the axial section of the inlet water pipe that is parallel to the horizontal plane.

[0021] As a preferred embodiment of the water heater provided by this utility model, the opening of the outlet water hole faces the bottom wall of the inner tank.

[0022] As a preferred embodiment of the water heater provided by this utility model, the inner water outlet is located on the axial tangent plane of the second water outlet section that is parallel to the horizontal plane.

[0023] As a preferred embodiment of the water heater provided by this utility model, the second water outlet section and the water inlet pipe are eccentrically arranged, and the water outlet hole is opened at the farthest distance between the inner wall of the water inlet pipe and the outer wall of the second water outlet section in the radial direction of the water inlet pipe.

[0024] As a preferred embodiment of the water heater provided by this utility model, the water inlet pipe assembly further includes a filter screen, which is disposed between the second water outlet section and the water inlet outer pipe and covers the water outlet hole.

[0025] The beneficial effects of this utility model are as follows:

[0026] The water heater provided by this utility model has an inner tank capable of storing water heated to a preset temperature, providing hot water to users promptly. By incorporating a temperature control device, on the one hand, the auxiliary heating component heats the water in the first outlet section of the outlet pipe, preventing the water temperature from being too low when the user turns the water heater off and on again. Since the water volume in the first outlet section is relatively small, the auxiliary heating component can quickly heat the water to the preset temperature, achieving an immediate hot water supply. On the other hand, the mixing valve draws cooler water from an external water source to the first outlet section, mixing it with the water there before it flows out to external water-using devices, preventing the auxiliary heating component from heating the water in the first outlet section to a higher temperature. Through the combined use of the mixing valve and the auxiliary heating component, the temperature of the water in the first outlet section can be adjusted to a satisfactory temperature for the user, thereby improving the user's water usage experience. Furthermore, the second outlet of the mixing valve is connected to the inlet end of the inlet pipe assembly, allowing cooler water to be supplied to the inner tank in a timely manner via the inlet pipe assembly, preventing water shortages from affecting user use. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the water heater provided in Embodiment 1 of this utility model;

[0029] Figure 2 This is one of the structural schematic diagrams of the hidden inner tank of the water heater provided in Embodiment 1 of this utility model;

[0030] Figure 3 This is the second schematic diagram of the hidden inner tank of the water heater provided in Embodiment 1 of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the water inlet pipe assembly provided in Embodiment 1 of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the water inlet inner pipe provided in Embodiment 1 of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the water inlet pipe assembly provided in Embodiment 2 of this utility model;

[0034] Figure 7This is a schematic diagram of the structure of the water inlet pipe assembly provided in Embodiment 3 of this utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the water inlet outer pipe provided in Embodiment 3 of this utility model;

[0036] Figure 9 yes Figure 7 A magnified view of a portion at point A.

[0037] Figure label:

[0038] 10. Inner liner;

[0039] 20. Main heating device;

[0040] 30. Water outlet pipe; 301. First water inlet section; 302. First water outlet section;

[0041] 40. Temperature control device; 41. Mixing valve; 411. First outlet; 412. Second outlet; 413. Water inlet; 42. Auxiliary heating assembly; 421. Induction coil; 422. Electromagnetic generator; 43. First temperature detection element;

[0042] 50. Inlet pipe assembly; 51. Inner inlet pipe; 511. Second inlet section; 512. Second outlet section; 5120. Inner outlet hole; 513. Inclined section; 52. Outer inlet pipe; 520. Outer outlet hole; 53. Filter screen;

[0043] 60. Second temperature detection component. Detailed Implementation

[0044] Before explaining any embodiment of the present invention in detail, it should be understood that the present invention is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0045] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0046] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.

[0047] In this invention, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0048] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0049] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0050] In this utility model, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this utility model. Furthermore, in the context, it should be understood that when one element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent the direct orientation but can also be understood as the lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0051] Example 1

[0052] Figure 1 A schematic diagram of the structure of the water heater provided in this embodiment is shown. Figure 2 One of the structural schematic diagrams of the concealed inner tank 10 of the water heater provided in this embodiment is shown. For example... Figures 1-2 As shown, this embodiment provides a water heater. In some embodiments, the water heater is an electric water heater.

[0053] Specifically, the water heater provided in this embodiment includes an inner tank 10, a water outlet pipe 30, a temperature regulating device 40, and an inlet pipe assembly 50. The inner tank 10 is used to hold water; the water outlet pipe 30 includes a first inlet section 301 and a first outlet section 302 connected to each other. The first inlet section 301 is located in the inner tank 10, and the first outlet section 302 extends out of the inner tank 10 and is connected to external water-using equipment; the outlet end of the inlet pipe assembly 50 is located in the inner tank 10, and the inlet end of the inlet pipe assembly 50 extends out of the inner tank 10; the temperature regulating device... The device 40 includes a mixing valve 41 and an auxiliary heating assembly 42. The mixing valve 41 has an inlet 413 and a first outlet 411 and a second outlet 412 that can be connected to the inlet 413. The inlet 413 is connected to an external water source. The first outlet 411 is connected to the middle of the first outlet section 302. The second outlet 412 is connected to the inlet end of the inlet pipe assembly 50. The auxiliary heating assembly 42 is located upstream of the mixing valve 41 and is configured to heat the water in the first outlet section 302.

[0054] The water heater provided in this embodiment has an inner tank 10 that can store water heated to a preset temperature to provide hot water to the user in a timely manner. By setting a temperature regulating device 40, on the one hand, the auxiliary heating component 42 can heat the water in the first outlet section 302 of the outlet pipe 30 to avoid the situation where the temperature of the water accumulated in the first outlet section 302 is too low when the user turns the water heater off and on again. Moreover, the water volume in the first outlet section 302 is small, and the auxiliary heating component 42 can quickly heat the water in it to the preset temperature to achieve the effect of instant hot water supply. On the other hand, the mixing valve 41 can lead the water with a lower temperature from the external water source to the first outlet section 302 to mix with the water in the first outlet section 302 before flowing out to the external water-using equipment, so as to avoid the auxiliary heating component 42 heating the water in the first outlet section 302 to a higher temperature. Through the combined use of the mixing valve 41 and the auxiliary heating component 42, the temperature of the water in the first outlet section 302 can be adjusted to a temperature satisfactory to the user, thereby improving the user's water use experience. In addition, the second outlet 412 of the mixing valve 41 is connected to the inlet end of the water inlet pipe assembly 50, and can also provide water at a lower temperature to the inner tank 10 in a timely manner through the water inlet pipe assembly 50 to avoid the situation where the inner tank 10 is short of water and affects the user's use.

[0055] Figure 3 This is a second schematic diagram of the structure of the concealed inner tank 10 of the water heater provided in this embodiment. (See attached diagram.) Figure 3 and combined Figure 1 , Figure 2 As shown, the auxiliary heating component 42 includes an induction coil 421 spirally wound around the first water outlet section 302 and an electromagnetic generator 422 electrically connected to the induction coil 421. Specifically, the water outlet pipe 30 is a metal pipe. When the electromagnetic generator 422 is energized, high-frequency alternating current passing through the induction coil 421 generates a rapidly changing alternating magnetic field around the induction coil 421. Free electrons inside the metal pipe placed in the alternating magnetic field move directionally, forming eddy currents. When the eddy currents flow in the metal pipe, due to the resistance of the metal pipe, electrical energy is converted into heat energy, thereby raising the temperature of the metal pipe. After the temperature of the metal pipe rises, the heat is transferred to the water inside the pipe through heat conduction, thus achieving the effect of heating the water in the first water outlet section 302. This heating method has the advantages of fast heating speed, high efficiency and energy saving, environmental protection and safety, and precise temperature control.

[0056] In some embodiments, the temperature control device 40 further includes a first temperature detection element 43, which is disposed on the first water outlet section 302 and located downstream of the mixing valve 41, for detecting the water temperature at the outlet of the first water outlet section 302. The mixing valve 41 and the auxiliary heating component 42 are both signal-connected to the first temperature detection element 43. By setting the first temperature detection element 43, the water temperature at the outlet of the first water outlet section 302 can be detected, and the detection result can be transmitted to the control device of the water heater. The control device can control the mixing valve 41 and / or the auxiliary heating component 42 to start according to the current water temperature at the outlet of the first water outlet section 302, so as to adjust the water temperature in the first water outlet section 302. In this embodiment, the first temperature detection element 43 is a temperature sensing probe.

[0057] Specifically, when the first temperature sensor 43 detects that the current water temperature at the outlet of the first water outlet section 302 exceeds the preset maximum temperature, the control device can control the mixing valve 41 to operate, so as to mix the lower-temperature water from the external water source into the first water outlet section 302, thereby lowering the water temperature at the outlet of the first water outlet section 302; when the first temperature sensor 43 detects that the current water temperature at the outlet of the first water outlet section 302 is lower than the preset minimum temperature, the control device can control the auxiliary heating component 42 to operate, so as to heat the water in the first water outlet section 302, thereby raising the water temperature at the outlet of the first water outlet section 302. Furthermore, by changing the output power of the electromagnetic generator 422, the heat generation of the induction coil 421 can be adjusted; by changing the water flow rate at the first outlet 411 of the mixing valve 41, the flow rate of the lower-temperature water mixed into the first water outlet section 302 can be changed, thereby adjusting the temperature of the water in the first water outlet section 302 to the preset temperature. This water temperature adjustment process is simple, convenient, and responsive.

[0058] In some embodiments, the temperature control device 40 further includes a water flow detection element (not shown in the figure). The water flow detection element is disposed on the first water outlet section 302 and located upstream of the mixing valve 41 to detect the water flow rate of the first water outlet section 302. The mixing valve 41 is signal-connected to the water flow detection element. By setting the water flow detection element, the water flow detection element can detect the current water flow rate of the first water outlet section 302 and transmit the signal to the control device of the water heater. The control device can then adjust the amount of water flowing out of the first outlet 411 of the mixing valve 41 according to the current water flow rate of the first water outlet section 302, the current water temperature, and the preset water temperature, thereby achieving precise adjustment of the water temperature flowing out of the outlet of the first water outlet section 302. In this embodiment, the water flow detection element is a flow sensor.

[0059] like Figure 1 and Figure 2As shown, the water heater also includes a main heating device 20, which is disposed in the inner tank 10 for heating the water in the inner tank 10. By setting the main heating device 20, the water in the inner tank 10 can be preheated to increase the temperature of the water flowing into the outlet pipe 30, thereby further improving the heating efficiency of the auxiliary heating component 42 when heating the water in the first outlet section 302. It should be noted that this embodiment does not limit the specific structure of the main heating device 20. Related technologies that can be applied to water heaters to heat the water in the inner tank 10, such as metal heating tubes, ceramic heating elements, or electromagnetic induction heating devices, can all be used as the main heating device 20.

[0060] Optionally, a second temperature sensor 60 is also provided in the inner tank 10. The second temperature sensor 60 is used to detect the temperature of the water in the inner tank 10 and is signal-connected to the main heating device 20. By providing the second temperature sensor 60, the current water temperature in the inner tank 10 can be detected, and the detection result can be transmitted to the control device of the water heater. The control device can control the main heating device 20 to start according to the current water temperature in the inner tank 10, so that the water temperature in the inner tank 10 is maintained within a preset temperature range. In this embodiment, the second temperature sensor 60 is a temperature probe.

[0061] It is understood that, in this embodiment, due to the setting of the auxiliary heating component 42, the preset maximum temperature of the water in the inner tank 10 is lower than the preset maximum temperature of the inner tank set in the prior art electric water heater, thus greatly reducing energy waste and saving users' living costs.

[0062] Figure 4 A schematic diagram of the structure of the water inlet pipe assembly 50 provided in this embodiment is shown. Figure 5 A schematic diagram of the structure of the water inlet inner pipe 51 provided in this embodiment is shown. Figures 4-5 and combined Figure 1 , Figure 2 As shown, the water inlet pipe assembly 50 includes an inner water inlet pipe 51 and an outer water inlet pipe 52. The inner water inlet pipe 51 includes a second water inlet section 511 and a second water outlet section 512 connected to each other. The second water outlet section 512 is located in the inner tank 10 and its port is closed. An inner water outlet hole 5120 is provided on the side wall of the second water outlet section 512. The second water inlet section 511 extends out of the inner tank 10 and is connected to the second outlet 412. The outer water inlet pipe 52 is sleeved on the outside of the second water outlet section 512, and both ends of the outer water inlet pipe 52 are closed to the inner water inlet pipe 51. An outer water outlet hole 520 is provided on the side wall of the outer water inlet pipe 52, which is offset from the inner water outlet hole 5120.

[0063] In this embodiment, the water inlet pipe assembly 50 allows cooler water to flow out from the inner outlet hole 5120 of the inner inlet pipe 51, where it collides with the inner wall of the outer inlet pipe 52. The water then flows along the inner wall of the outer inlet pipe 52 and out through the outlet hole 520 into the inner tank 10. During this process, the water flow rate is significantly reduced, thereby greatly decreasing the impact force of the cooler water flowing into the inner tank 10. This reduces hot and cold water turbulence and ensures the hot water output rate of the water heater. Furthermore, since the outer inlet pipe 52 is only fitted around the second outlet section 512, the amount of material used in the outer inlet pipe 52 can be reduced, lowering material costs.

[0064] Optionally, there are multiple internal water outlet holes 5120, which are spaced apart axially and / or circumferentially along the second water outlet section 512; and multiple external water outlet holes 520, which are spaced apart axially and / or circumferentially along the inlet outer pipe 52. This design can improve the water inlet efficiency of the inlet pipe assembly 50 and replenish water to the inner tank 10 in a timely manner.

[0065] like Figure 4 and Figure 5 As shown, in this embodiment, the outlet water hole 520 is located below the axial section of the inlet water pipe 52 that is parallel to the horizontal plane, so as to prevent water entering the inner tank 10 from the inlet water pipe assembly 50 from flowing above the hot and cold water stratification.

[0066] Furthermore, the opening of the outlet water hole 520 faces the bottom wall of the inner tank 10. That is, in this embodiment, multiple outlet water holes 520 are arranged in a row at axial intervals along the outer water inlet pipe 52. This arrangement allows the cooler water flowing from the water inlet pipe assembly 50 into the inner tank 10 to be evenly injected into the bottom of the inner tank 10, thereby gradually pushing the warmer water located above the inner tank 10 to the first water inlet section 301 of the outlet pipe 30; this design can also further reduce the probability of water entering the inner tank 10 from the water inlet pipe assembly 50 flowing above the hot and cold water stratification.

[0067] It should be noted that this embodiment does not limit the arrangement of the inner water outlet 5120 on the second water outlet section 512, and it can fill the entire second water outlet section 512. Of course, more preferably, the inner water outlet 5120 is located on the axial tangent plane of the second water outlet section 512 that is parallel to the horizontal plane. This arrangement can increase the flow distance of water from the inner water outlet 5120 to the outer water outlet 520, thereby reducing the flow velocity of water from the water inlet pipe assembly 50 to the inner tank 10, and thus avoiding the phenomenon of hot and cold water turbulence caused by excessive water flow.

[0068] It should be noted that the terms "upper," "lower," "top," and "bottom" mentioned in this embodiment refer to the actual orientation of the water heater after it is installed on the wall. Figure 1 The direction shown.

[0069] Continue as Figure 4 and Figure 5 As shown, the inner inlet pipe 51 also includes an inclined section 513, which connects the second inlet section 511 and the second outlet section 512, and gradually slopes downwards along the water flow direction in the second inlet section 511. The inclined section 513 serves two purposes: firstly, it allows the water in the inner inlet pipe 51 to flow naturally under its own weight, thereby increasing the water flow rate; secondly, it prevents water in the inner tank 10 from flowing back into the inner inlet pipe 51 during fluctuations in municipal water supply pressure or water outages, thus preventing the water in the inner tank 10 from drying out and ensuring the overall safety of the water heater.

[0070] Example 2

[0071] This embodiment provides a water heater that is an improvement on Embodiment 1.

[0072] Figure 6 A schematic diagram of the structure of the water inlet pipe assembly 50 provided in this embodiment is shown. Figure 6 and combined Figure 1 , Figure 2 As shown, the second water outlet section 512 and the inlet outer pipe 52 are eccentrically arranged, and in the radial direction of the inlet outer pipe 52, the outer wall of the inlet outer pipe 52 is provided with the outermost water outlet hole 520 at the farthest distance from the outer wall of the second water outlet section 512. This arrangement can further increase the flow distance of water from the inner water outlet hole 5120 to the outer water outlet hole 520, thereby reducing the flow velocity of water from the inlet pipe assembly 50 to the inner tank 10, thus avoiding the turbulence of hot and cold water caused by excessive water flow.

[0073] Example 3

[0074] This embodiment provides a water heater whose specific structure is roughly the same as that of the water heater provided in Embodiment 1, except that the structure of the water inlet pipe assembly 50 is different.

[0075] Figure 7 A schematic diagram of the structure of the water inlet pipe assembly 50 provided in this embodiment is shown. Figure 8 A schematic diagram of the structure of the water inlet pipe 52 provided in this embodiment is shown. Figure 9 It shows Figure 7 A magnified view of a portion at point A. (See image below.) Figures 7-9 and combined Figure 5As shown, the water inlet pipe assembly 50 also includes a filter screen 53, which is disposed between the second water outlet section 512 and the water inlet outer pipe 52, and covers the water outlet hole 520. By setting the filter screen 53, on the one hand, because the pore size of the filter holes on the filter screen 53 is small, the water flow between the second water outlet section 512 and the water inlet outer pipe 52 can be further dispersed when passing through the filter screen 53 before flowing out from the water outlet hole 520, thereby being injected into the inner tank 10 more evenly; on the other hand, the filter screen 53 can also filter the water flowing out from the inner water outlet hole 5120 to prevent impurities from entering the inner tank 10 and affecting the water quality.

[0076] like Figure 8 As shown, in this embodiment, there are two outlet water holes 520 on the water inlet pipe 52. The two outlet water holes 520 are spaced apart along the axial direction of the water inlet pipe 52, and the area covered by the two outlet water holes 520 is smaller than the length of the filter screen 53. On the one hand, this can prevent the filter screen 53 from coming off from the outlet water holes 520. On the other hand, it can allow the water flowing out from the inner outlet water hole 5120 to flow directly into the inner tank 10 through the filter holes of the filter screen 53, thus preventing the water flow from re-converging when it passes through the outlet water hole 520 again, which would affect the uniformity of its injection into the inner tank 10.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A water heater, characterized in that, include: Inner liner (10), the inner liner (10) is used to hold water; The water outlet pipe (30) includes a first water inlet section (301) and a first water outlet section (302) connected to each other. The first water inlet section (301) is located in the inner tank (10), and the first water outlet section (302) extends out of the inner tank (10) and is connected to an external water-using device. Water inlet pipe assembly (50), the outlet end of the water inlet pipe assembly (50) is located in the inner liner (10), and the inlet end of the water inlet pipe assembly (50) extends out of the inner liner (10); The temperature control device (40) includes a mixing valve (41) and an auxiliary heating component (42). The mixing valve (41) has an inlet (413) and a first outlet (411) and a second outlet (412) that are connected to the inlet (413). The inlet (413) is connected to an external water source. The first outlet (411) is connected to the middle of the first outlet section (302). The second outlet (412) is connected to the inlet end of the inlet pipe assembly (50). The auxiliary heating component (42) is located upstream of the mixing valve (41) and is configured to heat the water in the first outlet section (302).

2. The water heater according to claim 1, characterized in that, The auxiliary heating assembly (42) includes an induction coil (421) spirally wound around the first water outlet section (302) and an electromagnetic generator (422) electrically connected to the induction coil (421).

3. The water heater according to claim 1, characterized in that, The temperature control device (40) further includes a first temperature detection element (43), which is disposed on the first water outlet section (302) and located downstream of the mixing valve (41) to detect the water temperature at the outlet of the first water outlet section (302). The mixing valve (41) and the auxiliary heating component (42) are both signal connected to the first temperature detection element (43). And / or, the temperature control device (40) further includes a water flow detection element, which is disposed on the first water outlet section (302) and located upstream of the mixing valve (41) for detecting the water flow of the first water outlet section (302), and the mixing valve (41) is signal connected to the water flow detection element.

4. The water heater according to claim 1, characterized in that, The water heater also includes a main heating device (20), which is disposed in the inner tank (10) for heating the water in the inner tank (10).

5. The water heater according to claim 4, characterized in that, The inner tank (10) is also provided with a second temperature detection element (60), which is used to detect the temperature of the water in the inner tank (10). The second temperature detection element (60) is connected to the main heating device (20) by signal.

6. The water heater according to any one of claims 1 to 5, characterized in that, The water inlet pipe assembly (50) includes: The water inlet pipe (51) includes a second water inlet section (511) and a second water outlet section (512) connected to each other. The second water outlet section (512) is located in the inner tank (10) and its port is closed. An inner water outlet hole (5120) is provided on the side wall of the second water outlet section (512). The second water inlet section (511) extends out of the inner tank (10) and is connected to the second outlet (412). An inlet pipe (52) is sleeved outside the second outlet section (512), and an outlet hole (520) is provided on the side wall of the inlet pipe (52) and is arranged in a staggered manner with the inner outlet hole (5120).

7. The water heater according to claim 6, characterized in that, The outlet water hole (520) is located below the axial section of the inlet water pipe (52) that is parallel to the horizontal plane.

8. The water heater according to claim 7, characterized in that, The opening of the outflow hole (520) faces the bottom wall of the inner liner (10).

9. The water heater according to claim 7, characterized in that, The inner water outlet (5120) is located on the axial tangent plane of the second water outlet section (512) that is parallel to the horizontal plane.

10. The water heater according to claim 6, characterized in that, The second water outlet section (512) and the water inlet pipe (52) are arranged eccentrically, and the water outlet hole (520) is opened at the farthest distance between the inner wall of the water inlet pipe (52) and the outer wall of the second water outlet section (512) in the radial direction of the water inlet pipe (52).

11. The water heater according to claim 6, characterized in that, The water inlet pipe assembly (50) also includes a filter screen (53), which is disposed between the second water outlet section (512) and the water inlet outer pipe (52) and covers the water outlet hole (520).

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