Inner container assembly and water heater

Abstract

The utility model discloses an inner container assembly and a water heater, and the inner container assembly comprises a container body which is provided with a water inlet and a water outlet; the water inlet pipeline is connected with the water inlet; the water outlet pipeline is connected with the water outlet; the safety valve is arranged on the water inlet pipeline; the switch valve component is arranged on the water inlet pipeline, the water inlet end of the switch valve component is configured to be communicated with an external water source, the water outlet end of the switch valve component is configured to be communicated with a water inlet of the safety valve, and the switch valve is configured to be used for selectively and unidirectionally conducting the water inlet end towards the water outlet end; or the water outlet end is unidirectionally conducted to face the water inlet end. When the pressure in the container body exceeds a normal value and does not reach the water drainage and pressure relief through the external water drainage port of the safety valve, the switch valve component can selectively conduct the water outlet end towards the water inlet end in a one-way mode to reduce the pressure of the inner container, and therefore the inner container is protected.

Description

Technical Field

[0001] This utility model belongs to the field of water heater technology, and in particular relates to an inner tank assembly and a water heater. Background Technology

[0002] Water heaters are currently common household appliances, categorized into electric, gas, heat pump, and solar water heaters. Electric water heaters are widely used due to their convenience. Water heaters can be further classified by heating power into storage-type and instantaneous water heaters. Storage-type water heaters, equipped with a water tank, offer advantages such as large water output and stable water temperature, making them more popular among families. However, the increased water pressure during heating can cause the inner tank to expand, potentially leading to rupture. This issue is typically addressed by installing a safety valve on the water inlet pipe of the water heater.

[0003] The safety valve functions as a pressure relief valve. When the pressure inside the tank rises above a certain value, the safety valve releases excess pressure by dripping water externally, thus protecting the water heater's inner tank. However, on the one hand, the dripping water from the safety valve wastes water resources; on the other hand, a one-way valve is usually installed on the water inlet pipe of the water heater to prevent backflow. When the pressure inside the tank exceeds the normal value but is not high enough to trigger the safety valve to release pressure through the external drain port, the safety valve typically compresses its internal spring to open the internal drain port, allowing water to drain downwards and reduce the pressure inside the tank.

[0004] However, the presence of a one-way valve on the inlet pipe prevents the safety valve from draining water into the inlet pipe, causing the pressure in the inner tank to consistently exceed the normal value, which can easily reduce the lifespan of the inner tank. Therefore, the technical problem this invention aims to solve is how to design a system that, when the pressure in the inner tank exceeds the normal value but has not yet reached the point where drainage and pressure relief are possible through the external drain port, ensures that the safety valve opens the internal drain port by compressing the internal spring to drain water and reduce the pressure in the inner tank. Utility Model Content

[0005] This utility model provides an inner tank assembly and a water heater that ensures that when the pressure in the inner tank exceeds the normal value but does not reach the safety valve to drain and relieve pressure through the external drain port, the safety valve opens the internal drain port by compressing the internal spring to drain water, thereby reducing the pressure in the inner tank.

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

[0007] In the first aspect, this utility model provides an inner liner assembly, comprising:

[0008] The inner body has an inlet and an outlet formed on it;

[0009] A water inlet pipe, which is connected to the water inlet;

[0010] A water outlet pipe, which is connected to the water outlet;

[0011] A safety valve is installed on the water inlet pipe;

[0012] A switching valve component is disposed on the water inlet pipe. The water inlet end of the switching valve component is configured to be connected to an external water source. The water outlet end of the switching valve component is connected to the water inlet of the safety valve. The switching valve is configured to selectively unidirectionally guide the water inlet end toward the water outlet end, or unidirectionally guide the water outlet end toward the water inlet end.

[0013] In some embodiments of this application, the switching valve component is located on the side of the safety valve away from the bladder body, and the switching valve component includes:

[0014] The valve body has an inlet end formed at one end and an outlet end formed at the other end, and an inlet channel is formed inside, the inlet channel connecting the inlet end and the outlet end;

[0015] The first valve core is disposed in the water inlet channel and is used to unidirectionally guide the water inlet end toward the water outlet end.

[0016] By setting a valve body and a first valve core, one end of the valve body is the water inlet and the other end is the water outlet. A water inlet channel is formed in the valve body, which connects the water inlet and the water outlet. The first valve core is set in the water inlet channel and can unidirectionally guide the water inlet towards the water outlet, thereby controlling the opening and closing of the water inlet channel.

[0017] In some embodiments of this application, the first valve core includes:

[0018] A first stop portion is formed on the inner wall surface of the water inlet channel, and a first guide hole is formed thereon;

[0019] A second stop portion is formed on the inner wall surface of the water inlet channel, and a second guide hole is formed thereon. The second stop portion is farther away from the safety valve than the first stop portion.

[0020] The first push plate is located between the first stop and the second stop;

[0021] A first elastic element is sandwiched between the first stop portion and the first push plate, so that the first push plate elastically abuts against the second stop portion and blocks the second guide hole.

[0022] By forming a first stop and a second stop on the inner wall of the water inlet channel, with the second stop being farther away from the safety valve than the first stop, a first push plate is located between the first stop and the second stop, and a first elastic member is sandwiched between the first stop and the first push plate, so that the first push plate elastically abuts against the second stop and blocks the second guide hole, thereby controlling the water inlet channel to only connect from the water inlet end to the water outlet end.

[0023] In some embodiments of this application, a first interface and a second interface communicating with the water inlet channel are respectively formed on the side wall of the valve body, the first interface being located between the first valve core and the water inlet end, and the second interface being located between the first valve core and the water outlet end; the switching valve component further includes:

[0024] A bypass branch is located on the outside of the valve body, with one end connected to the first interface and the other end connected to the second interface.

[0025] A first interface and a second interface are formed on the sidewalls of the valve body on both sides of the first valve core. The bypass branch is located on the outside of the valve body. One end of the bypass branch is connected to the first interface and the other end is connected to the second interface. In this way, the opening and closing of the bypass branch is not controlled by the first valve core.

[0026] In some embodiments of this application, the switching valve component further includes:

[0027] The second valve core is disposed on the bypass branch and is used to unidirectionally guide the first interface toward the second interface.

[0028] By setting a second valve core, which is located on the bypass branch, the second valve core can unidirectionally guide the first interface toward the second interface, thereby controlling the opening and closing of the bypass branch.

[0029] In some embodiments of this application, the bypass branch includes:

[0030] A bypass connector, one end of which is connected to the first interface, and the other end of which is a closed structure with a bypass port formed on its side wall; the second valve core is disposed on the bypass connector.

[0031] A bypass pipe, one end of which is connected to the bypass port, and the other end of which is connected to the second interface.

[0032] By setting a bypass connector and a bypass pipe, one end of the bypass connector is connected to the first interface, and the other end is a closed structure. A bypass port is formed on the side wall of the bypass connector. The second valve core is set on the bypass connector and can control the opening and closing of the first interface on the bypass connector. One end of the bypass pipe is connected to the bypass port, and the other end is connected to the second interface. In this way, water entering the bypass connector can flow back into the water inlet channel through the bypass pipe.

[0033] In some embodiments of this application, the second valve core includes:

[0034] A third stop is formed at the edge of the first interface;

[0035] A fourth stop is formed at the other end of the bypass connector;

[0036] The second push plate is located between the third stop and the fourth stop;

[0037] The second elastic element is elastically clamped between the second push plate and the fourth stop, so that the second push plate elastically abuts against the third stop and blocks the first interface.

[0038] By forming a third stop at the edge of the first interface and a fourth stop at the other end of the bypass connector, a second push plate is located between the third and fourth stops, and a second elastic member is clamped between the second push plate and the fourth stop, so that the second push plate elastically abuts against the third stop and blocks the first interface, thereby controlling the opening and closing of the first interface; the bypass branch can only be connected from the first interface toward the second interface.

[0039] In some embodiments of this application, the fourth stop is threadedly connected to the bypass connector.

[0040] By connecting the fourth stop to the bypass connector via a thread, it is easy to adjust the position of the fourth stop on the bypass connector, thereby facilitating the adjustment of the elastic force of the second elastic element.

[0041] In some embodiments of this application, the second valve core further includes:

[0042] A pull rod, one end of which is connected to the second push plate, and the other end of which passes through the fourth stop and extends out of the bypass connector;

[0043] A handle, connected to the other end of the pull rod, is configured to move the second push plate away from the first interface to compress the second elastic element.

[0044] By setting up a pull rod and a handle, one end of the pull rod is connected to the second push plate, and the other end passes through the fourth stop and extends out to the bypass connector and connects to the handle. The user can pull the handle to drive the pull rod to compress the second elastic element, thereby opening the first interface and allowing more water to flow into the bypass branch, preventing impurities in the water from clogging the bypass branch.

[0045] In a second aspect, the present invention provides a water heater comprising an inner tank assembly as described in any one of the embodiments of the first aspect above.

[0046] Compared with the prior art, the advantages and positive effects of this utility model are as follows: By setting up an inlet pipe, an outlet pipe, a safety valve, and a switching valve component, the inlet pipe is connected to the inlet port on the tank body, and the outlet pipe is connected to the outlet port on the tank body. The safety valve and the switching valve component are both set on the inlet pipe. When water enters the tank body, the switching valve selectively unidirectionally opens the inlet end towards the outlet end to meet the water entry requirements of the tank body. After the tank body has finished entering water, the switching valve component disconnects the inlet pipe to prevent water from flowing back into the tank body. When the pressure inside the tank body exceeds the normal value and has not reached the point where it can be drained and depressurized through the external drain port of the safety valve, the switching valve component can selectively unidirectionally open the outlet end towards the inlet end, so that the safety valve can drain water through the internal drain port to reduce the pressure inside the tank body, thereby protecting the tank body and extending its service life. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic diagram of the structure of an embodiment of the inner liner assembly provided by this utility model;

[0049] Figure 2 A schematic diagram of the internal structure of another embodiment of the inner liner assembly provided by this utility model;

[0050] Figure 3 One of the cross-sectional views of another embodiment of the inner liner assembly provided by this utility model;

[0051] Figure 4 A second cross-sectional view of another embodiment of the inner liner assembly provided by this utility model;

[0052] Figure 5 The third cross-sectional view of another embodiment of the inner liner assembly provided by this utility model.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Tank body; 11. Inlet; 12. Outlet;

[0055] 2. Water inlet pipe;

[0056] 3. Water outlet pipe;

[0057] 4. Safety valve;

[0058] 5. Switch valve components; 51. Valve body; 511. Inlet end; 512. Outlet end; 513. Inlet flow channel; 514. First interface; 515. Second interface; 52. First valve core; 521. First stop part; 522. Second stop part; 523. First push plate; 5231. Guide part; 524. First elastic element; 53. Bypass branch; 531. Bypass connector; 5311. Bypass port; 532. Bypass pipe; 54. Second valve core; 541. Third stop part; 542. Fourth stop part; 543. Second push plate; 544. Second elastic element; 545. Pull rod; 546. Handle; 55. Filter screen. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0060] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0064] An electric water heater is a type of water heater that uses electricity as its primary energy source. The high-temperature heat generated after the power is turned on directly heats the water stored in the water heater to produce hot water.

[0065] Electric water heaters typically consist of a water tank, an electric heating element, and an electronic control board. The water tank has a storage cavity to store water to be heated. The electric heating element is inserted into the storage cavity of the water tank. The electronic control board is used to control the electric heating element to operate by turning the power on and off, so that the water in the tank is heated to the set temperature.

[0066] For the water tank of an electric water heater, the tank generally consists of an outer shell and an inner tank, with an insulation layer between them. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse designs; the inner tank can be made of metal or plastic, depending on the needs.

[0067] In addition, the insulation layer formed between the outer shell and the inner liner is commonly made of materials such as asbestos, sponge, foam plastic, and polyurethane foam. In conventional technology, foaming is usually used to form the insulation layer in order to achieve good insulation effect.

[0068] For water tanks with metal inner liner, corrosion can easily occur inside due to water quality. Therefore, magnesium rods are installed on the water tank and inserted into the water storage cavity inside the tank.

[0069] Magnesium has the lowest electrochemical potential among metals and is physiologically non-toxic. Therefore, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protection; the larger the magnesium rod, the better the protection and the longer the protection time.

[0070] The water tank is also equipped with an inlet pipe and an outlet pipe. The inlet pipe is used to deliver cold water into the water storage cavity formed inside the water tank, while the hot water in the water storage cavity is output from the outlet pipe.

[0071] For electric heating components, electric heating methods such as electric heating wires, magnetic energy, or silicon tube heating can be used to heat the water stored in the water storage chamber.

[0072] The electronic control board is used to receive detection signals from relevant sensors, such as water temperature sensors and flow sensors, and at the same time, to control the power supply to and from the electric heating components.

[0073] When the electric water heater is working, the electric control board controls the electric heating element to be powered on and heated. When the water temperature in the tank reaches the set value, the electric control board controls the electric heating element to be powered off.

[0074] In the first aspect, combining Figures 1 to 5 As shown, this utility model provides an inner tank assembly, which includes a tank body 1, an inlet pipe 2, an outlet pipe 3, a safety valve 4, and a switch valve component 5.

[0075] The inner body 1 has an inlet 11 and an outlet 12.

[0076] Water inlet pipe 2 is sealed to water inlet 11;

[0077] The water outlet pipe 3 is sealed to the water outlet 12;

[0078] Safety valve 4 is installed on water inlet pipe 2;

[0079] The switch valve component 5 is installed on the water inlet pipe 2 and is located on the side of the safety valve 4 away from the tank body 1. The water inlet end 511 of the switch valve component 5 is configured to be connected to an external water source, and the water outlet end 512 of the switch valve component 5 is connected to the water inlet of the safety valve 4. The switch valve is configured to selectively unidirectionally guide the water inlet end 511 toward the water outlet end 512, or unidirectionally guide the water outlet end 512 toward the water inlet end 511.

[0080] Specifically, by setting up an inlet pipe 2, an outlet pipe 3, a safety valve 4, and a switching valve component 5, the inlet pipe 2 is connected to the inlet port 11 on the tank body 1, and the outlet pipe 3 is connected to the outlet port 12 on the tank body 1. The safety valve 4 and the switching valve component 5 are both located on the inlet pipe 2, with the switching valve component 5 located on the side of the safety valve 4 away from the tank body 1. When water enters the tank body 1, the switching valve selectively unidirectionally opens the inlet end 511 towards the outlet end 512 to meet the water intake requirements of the tank body 1. After the tank body 1 has finished entering water, the switching valve component 5 disconnects the inlet pipe 2 to prevent backflow of water in the tank body 1. When the pressure inside the tank body 1 exceeds the normal value and is not sufficient to drain and relieve pressure through the external drain port of the safety valve 4, the switching valve component 5 can selectively unidirectionally open the outlet end 512 towards the inlet end 511, so that the safety valve 4 drains through the internal drain port to reduce the pressure in the inner tank, thereby protecting the inner tank and extending its service life.

[0081] In some embodiments of this application, combined with Figure 2 As shown, the switching valve component 5 includes a valve body 51 and a first valve core 52.

[0082] One end of the valve body 51 has an inlet end 511, which is connected to an external water source. The other end of the valve body 51 has an outlet end 512, which is connected to the inlet of the safety valve 4. An inlet channel 513 is formed inside the valve body 51, which connects the inlet end 511 and the outlet end 512.

[0083] The first valve core 52 is disposed in the water inlet channel 513 and is used to unidirectionally guide the water inlet end 511 toward the water outlet end 512.

[0084] Specifically, by setting a valve body 51 and a first valve core 52, one end of the valve body 51 is the water inlet end 511 and the other end is the water outlet end 512. A water inlet channel 513 is formed inside the valve body 51, which connects the water inlet end 511 and the water outlet end 512. The first valve core 52 is set inside the water inlet channel 513. The first valve core 52 can unidirectionally guide the water inlet end 511 toward the water outlet end 512, thereby controlling the opening and closing of the water inlet channel 513.

[0085] In some embodiments of this application, combined with Figure 3 As shown, the first valve core 52 includes a first stop portion 521 and a second stop portion 522.

[0086] The first stop portion 521 is formed on the inner wall surface of the water inlet channel 513, and a first guide hole is formed thereon;

[0087] The second stop portion 522 is formed on the inner wall surface of the water inlet channel 513, and a second guide hole is formed thereon. Both the second guide hole and the first guide hole are connected to the water inlet channel 513. The second stop portion 522 is farther away from the safety valve 4 than the first stop portion 521.

[0088] The first push plate 523 is located between the first stop portion 521 and the second stop portion 522;

[0089] The first elastic member 524 is sandwiched between the first stop portion 521 and the first push plate 523, so that the first push plate 523 elastically abuts against the second stop portion 522 and blocks the second guide hole.

[0090] Specifically, in combination Figure 4 As shown, Figure 4 The middle arrow indicates the direction of water flow. A first stop 521 and a second stop 522 are formed on the inner wall of the water inlet channel 513. The second stop 522 is farther away from the safety valve 4 than the first stop 521. The first push plate 523 is located between the first stop 521 and the second stop 522. The first elastic member 524 is sandwiched between the first stop 521 and the first push plate 523, so that the first push plate 523 elastically abuts against the second stop 522 and blocks the second guide hole. This controls the water inlet channel 513 to only be connected from the water inlet end 511 to the water outlet end 512, and prevents backflow in the water inlet channel 513.

[0091] Specifically, in order to better drive the first push plate 523 to move through the first elastic member 524, the upper end of the first elastic member 524 is fixedly connected to the first stop part 521, and the lower end of the first elastic member 524 is fixedly connected to the first push plate 523.

[0092] In some embodiments of this application, a guide portion 5231 is formed on the first push plate 523. The guide portion 5231 extends into the first elastic member 524. When the first elastic member 524 drives the first push plate 523 to move, the guide portion 5231 plays a guiding role.

[0093] In some embodiments of this application, a first interface 514 and a second interface 515 communicating with the water inlet channel 513 are respectively formed on the side wall of the valve body 51. The first interface 514 is located between the first valve core 52 and the water inlet end 511, and the second interface 515 is located between the first valve core 52 and the water outlet end 512.

[0094] The switching valve component 5 also includes a bypass branch 53, which is located outside the valve body 51. One end of the bypass branch 53 is connected to the first interface 514, and the other end is connected to the second interface 515.

[0095] Specifically, a first interface 514 and a second interface 515 are formed on the sidewalls of the valve body 51 on both sides of the first valve core 52. A bypass branch 53 is located on the outside of the valve body 51. One end of the bypass branch 53 is connected to the first interface 514 and the other end is connected to the second interface 515. In this way, the opening and closing of the bypass branch 53 is not controlled by the first valve core 52.

[0096] In some embodiments of this application, combined with Figure 2 As shown, the switching valve component 5 also includes a filter screen 55, which is disposed on the first interface 514 and is used to filter water entering the bypass branch 53.

[0097] In other embodiments, the filter screen 55 has a cylindrical structure and is disposed in the water inlet channel 513, with the outer surface of the filter screen 55 abutting against the first interface 514.

[0098] In some embodiments of this application, the switching valve component 5 further includes a second valve core 54, which is disposed on the bypass branch 53 and is used to unidirectionally guide the first interface 514 toward the second interface 515.

[0099] Specifically, by setting a second valve core 54, which is located on the bypass branch 53, the second valve core 54 can unidirectionally guide the first interface 514 toward the second interface 515, thereby controlling the opening and closing of the bypass branch 53.

[0100] In some embodiments of this application, the bypass branch 53 includes a bypass connector 531 and a bypass pipe 532.

[0101] One end of the bypass connector 531 is connected to the first interface 514, and the other end of the bypass connector 531 is a closed structure with a bypass port 5311 formed on the lower side of its side wall. The bypass port 5311 is connected to the internal channel of the bypass pipe 532, and the second valve core 54 is disposed on the bypass connector 531.

[0102] One end of the bypass pipe 532 is connected to the bypass port 5311, and the other end of the bypass pipe 532 is connected to the second interface 515.

[0103] Specifically, by setting a bypass connector 531 and a bypass pipe 532, one end of the bypass connector 531 is connected to the first interface 514, and the other end of the bypass connector 531 is a closed structure. A bypass port 5311 is formed on the side wall of the bypass connector 531. The second valve core 54 is set on the bypass connector 531 and can control the opening and closing of the first interface 514 on the bypass connector 531. One end of the bypass pipe 532 is connected to the bypass port 5311, and the other end is connected to the second interface 515. In this way, water entering the bypass connector 531 can flow back into the water inlet channel 513 through the bypass pipe 532.

[0104] In some embodiments of this application, combined with Figure 5 As shown, the second valve core 54 includes a third stop portion 541, a fourth stop portion 542, a second push plate 543, and a second elastic member 544.

[0105] The third stop portion 541 is formed at the edge of the first interface 514;

[0106] The fourth stop 542 is formed at the other end of the bypass connector 531;

[0107] The second push plate 543 is located between the third stop 541 and the fourth stop 542. Specifically, the second push plate 543 is located between the first interface 514 and the bypass port 5311.

[0108] The second elastic member 544 is elastically clamped between the second push plate 543 and the fourth stop portion 542, so that the second push plate 543 elastically abuts against the third stop portion 541 and blocks the first interface 514.

[0109] Specifically, in combination Figure 5 As shown, Figure 5 The middle arrow indicates the direction of water flow. A third stop 541 is formed at the edge of the first interface 514, and a fourth stop 542 is formed at the other end of the bypass connector 531. A second push plate 543 is located between the third stop 541 and the fourth stop 542. A second elastic member 544 is sandwiched between the second push plate 543 and the fourth stop 542, so that the second push plate 543 elastically abuts against the third stop 541 and blocks the first interface 514, thereby controlling the opening and closing of the first interface 514. The bypass branch 53 can only be connected from the first interface 514 toward the second interface 515.

[0110] When the pressure in the tank 1 exceeds the normal value but is not high enough to allow the safety valve 4 to drain and relieve pressure through the external drain port, the safety valve 4 will typically compress its internal spring to drain water into the inlet pipe 2, thereby reducing the pressure in the tank 1. Since the switching valve component 5 is equipped with a bypass branch 53, the opening and closing of which is controlled by the second valve core 54, allowing the switching valve component 5 to drain water through the bypass branch 53, thus reducing the internal pressure of the tank 1, protecting it, and extending its service life. This avoids the situation in existing technologies where the presence of a check valve in the inlet pipe prevents backflow of water and hinders pressure relief in the tank 1.

[0111] Of course, when the internal pressure of the tank 1 increases sharply, the tank 1 mainly drains and relieves pressure through the external drain port of the safety valve 4. Since the switching valve component 5 is equipped with a bypass branch 53, the switching valve component 5 can reduce the internal pressure of the tank 1, prevent pressure buildup in the tank 1, and reduce the dripping of the safety valve 4 to a certain extent.

[0112] In some embodiments of this application, the fourth stop 542 is threadedly connected to the bypass connector 531.

[0113] Specifically, by threading the fourth stop 542 to the bypass connector 531, it is easy to adjust the position of the fourth stop 542 on the bypass connector 531, thereby facilitating the adjustment of the elastic force of the second elastic member 544.

[0114] In some embodiments of this application, the second valve core 54 further includes a pull rod 545 and a handle 546.

[0115] One end of the pull rod 545 is connected to the second push plate 543, and the other end of the pull rod 545 passes through the fourth stop 542 and extends out of the bypass connector 531;

[0116] The handle 546 is connected to the other end of the pull rod 545. The handle 546 is configured to move the second push plate 543 away from the first interface 514 to compress the second elastic member 544.

[0117] Specifically, by setting up a pull rod 545 and a handle 546, one end of the pull rod 545 is connected to the second push plate 543, and the other end passes through the fourth stop part 542 and extends out of the bypass connector 531 to connect with the handle 546. The user can pull the handle 546 to drive the pull rod 545 to compress the second elastic element 544, thereby opening the first interface 514 and allowing more water to flow into the bypass branch 53, preventing impurities in the water from clogging the bypass branch 53.

[0118] In a second aspect, the present invention provides a water heater including an inner tank assembly as described in any of the embodiments of the first aspect above.

[0119] Since it includes the inner liner component of any of the above-described first aspect embodiments, it has all the beneficial effects of the inner liner component of any of the above embodiments, which will not be repeated here.

[0120] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0121] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. An inner liner assembly, characterized in that, include: The inner body has an inlet and an outlet formed on it; A water inlet pipe, which is connected to the water inlet; A water outlet pipe, which is connected to the water outlet; A safety valve is installed on the water inlet pipe; A switching valve component is disposed on the water inlet pipe. The water inlet end of the switching valve component is configured to be connected to an external water source. The water outlet end of the switching valve component is connected to the water inlet of the safety valve. The switching valve is configured to selectively unidirectionally guide the water inlet end toward the water outlet end, or unidirectionally guide the water outlet end toward the water inlet end.

2. The inner liner assembly according to claim 1, characterized in that, The switching valve component is located on the side of the safety valve away from the bladder body, and the switching valve component includes: The valve body has an inlet end formed at one end and an outlet end formed at the other end, and an inlet channel is formed inside, the inlet channel connecting the inlet end and the outlet end; The first valve core is disposed in the water inlet channel and is used to unidirectionally guide the water inlet end toward the water outlet end.

3. The inner liner assembly according to claim 2, characterized in that, The first valve core includes: A first stop portion is formed on the inner wall surface of the water inlet channel, and a first guide hole is formed thereon; A second stop portion is formed on the inner wall surface of the water inlet channel, and a second guide hole is formed thereon. The second stop portion is farther away from the safety valve than the first stop portion. The first push plate is located between the first stop and the second stop; A first elastic element is sandwiched between the first stop portion and the first push plate, so that the first push plate elastically abuts against the second stop portion and blocks the second guide hole.

4. The inner liner assembly according to claim 2, characterized in that, The valve body has a first interface and a second interface forming on its side wall, which are connected to the water inlet channel. The first interface is located between the first valve core and the water inlet end, and the second interface is located between the first valve core and the water outlet end. The switching valve component also includes: A bypass branch is located on the outside of the valve body, with one end connected to the first interface and the other end connected to the second interface.

5. The inner liner assembly according to claim 4, characterized in that, The switching valve component also includes: The second valve core is disposed on the bypass branch and is used to unidirectionally guide the first interface toward the second interface.

6. The inner liner assembly according to claim 5, characterized in that, The bypass branch includes: A bypass connector, one end of which is connected to the first interface, and the other end of which is a closed structure with a bypass port formed on its side wall; the second valve core is disposed on the bypass connector. A bypass pipe, one end of which is connected to the bypass port, and the other end of which is connected to the second interface.

7. The inner liner assembly according to claim 6, characterized in that, The second valve core includes: A third stop is formed at the edge of the first interface; A fourth stop is formed at the other end of the bypass connector; The second push plate is located between the third stop and the fourth stop; The second elastic element is elastically clamped between the second push plate and the fourth stop, so that the second push plate elastically abuts against the third stop and blocks the first interface.

8. The inner liner assembly according to claim 7, characterized in that, The fourth stop is threadedly connected to the bypass connector.

9. The inner liner assembly according to claim 7, characterized in that, The second valve core also includes: A pull rod, one end of which is connected to the second push plate, and the other end of which passes through the fourth stop and extends out of the bypass connector; A handle, connected to the other end of the pull rod, is configured to move the second push plate away from the first interface to compress the second elastic element.

10. A water heater, characterized in that, Includes the inner liner assembly as described in any one of claims 1 to 9 above.

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