Water heater

Abstract

The invention discloses a water heater, which relates to the technical field of household equipment and comprises a water tank, a water inlet pipe, a water outlet pipe, a water inlet valve and a water outlet valve. The water inlet valve comprises a first shell and a first valve element, a first valve hole, a balance cavity, a first water inlet cavity and a first water outlet cavity are formed in the first shell, the first water inlet cavity and the first water outlet cavity are located at the two ends of the first valve hole, and the balance cavity communicates with the first water inlet cavity. The communicating hole is located in the outer wall of the second shell and communicates with the balance cavity through a connecting pipe, and the second valve element is rotationally connected with the lever mechanism. When the water using terminal is in a closed state, the second valve element can move upwards and drive the lever mechanism to rotate to close the communicating hole, and therefore the first valve element moves downwards and keeps closing the first valve hole. When the water tank leaks water, the pressure in the water tank is reduced, but the water inlet valve is always in a closed state, and the water tank cannot replenish water, so that continuous water leakage of the water tank can be inhibited.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a water heater. Background Art

[0002] For household appliances with water tanks, such as electric water heaters or heat pump water heaters, the water inlet of the water tank is generally connected to the tap water network, and the water outlet of the water tank is generally connected to water terminals with switch valves such as faucets and showers. When the switch valve is turned on, the switch valve releases water from the water tank, and the tap water network automatically fills the water tank with water to achieve water replenishment.

[0003] In the related art water heater, when the water tank leaks, the pressure inside the water tank decreases. At this time, tap water will continue to replenish the water tank, causing the water tank to be in a leaking state all the time, wasting water resources. In addition, when the leakage is serious, there is a risk that the space where the water tank is placed will be soaked by water. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a water heater that can solve the problem of continuous water leakage when a water tank leaks.

[0005] According to a first embodiment of the present invention, a water heater comprises: a water tank; a water inlet pipe for connecting a water source and the interior of the water tank; a water outlet pipe for connecting the interior of the water tank and a water use terminal; a water inlet valve installed in the water inlet pipe, the water inlet valve comprising a first shell and a first valve core, the first shell having a first valve hole, a balancing chamber, and a first water inlet chamber and a first water outlet chamber located at both ends of the first valve hole, the balancing chamber being communicated with the first water inlet chamber, the first valve core comprising a first sealing portion for blocking the first valve hole, the first valve core being configured to move downward to close the first valve hole through the first sealing portion, or to move upward to open the first valve hole. A valve hole; a water outlet valve installed in the water outlet pipe, the water outlet valve comprising a second shell, a second valve core and a lever mechanism, the second shell having a second valve hole and a communicating hole, the communicating hole being located on the outer wall of the second shell, the lever mechanism comprising a second sealing portion for blocking the communicating hole, the second valve core being rotatably connected to the lever mechanism, the second valve core being configured to move downward to open the second valve hole and drive the lever mechanism to open the communicating hole, or to move upward to drive the second sealing portion to close the communicating hole; a connecting pipe connecting the water inlet valve and the water outlet valve, the interior of the connecting pipe being connected to the balancing chamber and the communicating hole.

[0006] The water heater according to the embodiment of the present invention has at least the following beneficial effects: By arranging an inlet valve in the water inlet pipe of the water tank and an outlet valve in the water outlet pipe of the water tank, and a connecting pipe connecting the inlet valve and the outlet valve, the inlet valve includes a first housing and a first valve core, the first housing has a first valve hole, a balance chamber, and a first water inlet chamber and a first water outlet chamber located at both ends of the first valve hole, the balance chamber is connected to the first water inlet chamber, the first valve core can move in the up and down direction and includes a first sealing portion for opening or closing the first valve hole, the outlet valve includes a second housing, a second valve core and a lever mechanism, the second housing has a second valve hole and a communicating hole, the communicating hole is located on the outer wall of the second housing, the communicating hole and the balance chamber are connected through the connecting pipe, the second valve core is rotatably connected to the lever mechanism, the second valve core can move in the up and down direction and drive the second sealing portion of the lever mechanism to open or close the communicating hole. When the water terminal is in a closed state, the second housing is filled with water and the water does not flow, so that the second valve core can move upward and drive the lever mechanism to rotate so as to keep the communicating hole closed, the balance chamber is connected to the first water inlet chamber so that the pressure in the first housing cavity is balanced, so the first valve core moves downward and keeps the first valve hole closed. When the water tank leaks, the pressure inside the water tank decreases, the pressure in the first water outlet chamber decreases, and the pressures in the first water inlet chamber and the balance chamber remain unchanged. Therefore, the first valve core still keeps the first valve hole closed under the action of the water pressure, that is, the water inlet valve is in a closed state, and the water tank cannot be replenished with water through the water inlet pipe. After the water tank leaks some water, the pressure inside the water tank is balanced with the atmospheric pressure, and the water tank stops leaking. Therefore, the water heater in this embodiment can effectively suppress the problem of continuous leakage of the water tank.

[0007] According to some embodiments of the present invention, the second valve core is configured to be able to move downward when the water outlet pipe discharges water, and to be able to move upward when the water outlet pipe stops discharging water.

[0008] According to some embodiments of the present invention, the second valve core includes a second float valve and a float ball, the float ball is fixedly connected to the outer peripheral wall of the second float valve, the second float valve includes a second guide part and a second actuating part, the second guide part is connected to the upper end of the second actuating part, the second guide part is provided with a second flow channel for supplying water to enter the second float valve, the second actuating part is provided at the end of the second flow channel, and the second actuating part is provided with a second water outlet hole connecting the second flow channel and the outer peripheral wall of the second actuating part on a side wall close to the second flow channel.

[0009] According to some embodiments of the present invention, the second valve hole is located at one end of the movement path of the second float valve, and the starting end of the second flow channel is arranged at the outer peripheral wall of the second float valve; or, the second valve hole is located on the side opposite to at least part of the outer peripheral wall of the second float valve, the starting end of the second flow channel is arranged at one end of the second guide portion away from the second actuating portion, and the outer peripheral wall of the second guide portion is provided with a third water outlet hole capable of connecting the second flow channel and the second valve hole.

[0010] According to some embodiments of the present invention, the water outlet pipe has a second inlet end located in the water tank, and an upper end surface of the second inlet end is higher than an upper end surface of the float.

[0011] According to some embodiments of the present invention, the lever mechanism further comprises a support and a lever, one end of the lever is hinged to the second actuating portion, the other end is connected to the second sealing portion, and the support is hinged to the middle portion of the lever.

[0012] According to some embodiments of the present invention, the first valve core is configured to be able to move upward when the communicating hole is opened, and to be able to move downward when the communicating hole is closed.

[0013] According to some embodiments of the present invention, the first valve core includes a first float valve, which includes a first guide part and a first actuating part, the first actuating part is connected to the upper end of the first guide part and is located in the balancing chamber, the first guide part is provided with a first flow channel for water to flow into the first float valve, the first actuating part is provided at the end of the first flow channel, and the first actuating part is provided with a first water outlet hole on a side wall close to the first flow channel, which connects the first flow channel and the outer peripheral wall of the first actuating part.

[0014] According to some embodiments of the present invention, the first valve hole is located at one end of a movement path of the first float valve, the first sealing portion is provided at one end of the first float valve close to the first valve hole, the starting end of the first flow channel is provided at an outer peripheral wall of the first float valve, and when the first sealing portion closes the first valve hole, the starting end of the first flow channel is located in the first water inlet chamber.

[0015] According to some embodiments of the present invention, when the first valve core is configured to move upward to one end away from the first valve hole, the starting end of the first flow channel is located in the balancing chamber, and the inner wall of the balancing chamber is provided with a fourth water outlet hole connected to the first water inlet chamber; or, when the first valve core is configured to move upward to one end away from the first valve hole, the starting end of the first flow channel is located in the first water inlet chamber.

[0016] According to some embodiments of the present invention, the water heater further comprises a one-way valve installed in the first water outlet cavity.

[0017] According to some embodiments of the present invention, the water outlet pipe has a second inlet end located in the water tank, and the second inlet end is arranged upward; and / or the water inlet pipe has a first inlet end located in the water tank, and the first inlet end is arranged downward.

[0018] According to a second aspect of the present invention, a water heater comprises: a water tank; a water inlet pipe for conveying water from a source into the water tank; a water outlet pipe for conveying water in the water tank to a water-using terminal; a water inlet valve installed in the water inlet pipe, the water inlet valve comprising a first housing and a first valve core, the first housing comprising a first valve hole, a balancing chamber, and a first water inlet chamber and a first water outlet chamber located at both ends of the first valve hole, the balancing chamber being in communication with the first water inlet chamber, and the first valve core comprising a first sealing portion for blocking the first valve hole; A water outlet valve is installed in the water outlet pipe, and the water outlet valve includes a second shell, a second valve core and a lever mechanism, the second shell has a second valve hole and a connecting hole, the connecting hole is located on the outer wall of the second shell, the lever mechanism includes a second sealing portion for blocking the connecting hole, and the second valve core is rotatably connected to the lever mechanism; a connecting pipe connects the water inlet valve and the water outlet valve, and the interior of the connecting pipe is connected to the balancing chamber and the connecting hole; wherein, when the water terminal is in an open state, the second valve core moves downward under the action of the outlet water flow to open the second valve hole, and drives the lever mechanism to rotate upward to open the connecting hole, and the first valve core moves upward under the action of the inlet water flow to open the first valve hole; when the water terminal is in a closed state, the second valve core moves upward under the action of buoyancy to close the second valve hole, and drives the lever mechanism to rotate downward to close the connecting hole, and the first valve core moves downward under the action of its own gravity to close the first valve hole.

[0019] The water heater according to the embodiment of the present invention has at least the following beneficial effects: When the water terminal is opened, the water outlet valve can be opened in time to discharge water, and the water inlet valve can also be opened in time to replenish water to the water tank; when the water terminal is closed, the water outlet valve closes the connecting hole under the action of the second valve core and the lever mechanism, so that the first valve core of the water inlet valve closes the first valve hole in time under the action of its own gravity, thereby realizing the closure of the water outlet valve and the water inlet valve. When the water tank leaks, the pressure in the water tank decreases, the pressure in the first water outlet chamber decreases, and the pressure in the first water inlet chamber and the balance chamber remains unchanged. Therefore, the first valve core still keeps the first valve hole closed under the action of water pressure, that is, the water inlet valve is in a closed state, and the water tank cannot be replenished through the water inlet pipe. After the water tank leaks a part of water, the pressure in the water tank is balanced with the atmospheric pressure, and the water tank stops leaking. Therefore, the water heater of this embodiment can effectively suppress the problem of continuous leakage of the water tank.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a structural schematic diagram of a water heater according to an embodiment of the present invention, wherein the switch valve of the water use terminal is in a closed state; Figure 2 This is a structural schematic diagram of a water inlet valve in a closed state according to an embodiment of the present invention; Figure 3 A schematic structural diagram of a water inlet valve in an open state according to an embodiment of the present invention; Figure 4 for Figure 2 An enlarged view of the structure of the first valve core; Figure 5 A schematic structural diagram of a water inlet valve in a closed state according to another embodiment of the present invention; Figure 6 A schematic structural diagram of a water inlet valve in an open state according to another embodiment of the present invention; Figure 7 for Figure 5 An enlarged view of the structure of the first valve core; Figure 8 This is a structural schematic diagram of a water outlet valve in an open state according to an embodiment of the present invention; Fig. 9 This is a structural schematic diagram of a water outlet valve in a closed state according to an embodiment of the present invention; Fig.10 for Figure 8 An enlarged view of the structure of the second valve core; Fig.11 A schematic structural diagram of a water outlet valve in an open state according to another embodiment of the present invention; Fig.12 A schematic structural diagram of a water outlet valve in a closed state according to another embodiment of the present invention; Fig.13 for Fig.11 An enlarged view of the structure of the second valve core; Fig.14 It is a schematic structural diagram of a water heater according to an embodiment of the present invention, wherein the switch valve of the water use terminal is in an open state.

[0022] Figure Number: Water tank 100; Water inlet pipe 200; first inlet end 220; Water outlet pipe 300; water outlet pipe section 310; second inlet end 320; Inlet valve 400; first housing 410; first valve hole 411; balancing chamber 412; fourth water outlet hole 4121; first water inlet chamber 413; first water outlet chamber 414; first guide sleeve 415; upper limit portion 416; first joint 417; first valve core 420; first float valve 421; first flow guide portion 4211; first actuating portion 4212; first water outlet hole 4213; first groove 4214; first convex portion 4215; first guide block 4216; first sealing portion 430; first concave portion 431; first flow channel 440; first middle section 441; one-way valve 450; filter screen 460; The water outlet valve 500; the second housing 510; the second valve hole 511; the connecting hole 512; the second water inlet chamber 513; the second water outlet chamber 514; the second convex portion 515; the second joint 516; the second guide sleeve 517; the lower limit portion 518; the water storage chamber 519; the second valve core 520; the second float valve 521; the second flow guide portion 5211; the second actuating portion 5212; the second water outlet hole 5213; the second groove 5214; the third water outlet hole 5215; the float 522; the second guide block 523; the lever mechanism 530; the second sealing portion 531; the second recess 5311; the support 532; the lever 533; the second flow channel 540; the second middle section 541; Connecting pipe 600; Water pipe 700; Water use terminal 800; switch valve 810. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Water heaters include heat pump water heaters, air energy water heaters, electric water heaters and other types. Water heaters are commonly used to provide hot water for daily use such as showers and kitchens. They can also be used for heating, such as floor heating and hot towel racks. The water heater has a water tank, the water inlet of which is connected to a water source, which is usually a municipal tap water network. The water outlet of the water tank is connected to a water terminal, which is generally a faucet, shower head, etc. The water terminal has a switch valve. When the switch valve is turned on, the switch valve releases water from the water tank, and tap water automatically flows into the water tank to replenish water.

[0028] In the related art, a water tank may leak after long-term use. In order to prevent the water tank from leaking for a long time and causing the space where the water tank is placed to be soaked by water, an embodiment of the present invention provides a water heater. Figure 1 As shown, the water heater of the embodiment of the present invention includes a water tank 100, a water inlet pipe 200 and a water outlet pipe 300. One end of the water inlet pipe 200 is connected to a water source, and the other end of the water inlet pipe 200 is connected to the inside of the water tank 100. The water source replenishes water to the water tank 100 through the water inlet pipe 200. It can be understood that the water source of the present embodiment is a tap water network, so that the end of the water inlet pipe 200 close to the water source has a certain water pressure. As an alternative, the water source may also be other forms such as a purification pool. One end of the water outlet pipe 300 is connected to the water terminal 800, and the other end of the water outlet pipe 300 is connected to the inside of the water tank 100. The water in the water tank 100 is discharged to the water terminal 800 through the water outlet pipe 300.

[0029] Reference Figure 1As shown, the water heater of the embodiment of the present invention further includes a water inlet valve 400, a water outlet valve 500 and a connecting pipe 600. The water inlet valve 400 is installed in the water inlet pipe 200, and one end of the water inlet valve 400 can be installed on the water inlet pipe 200 through a pipe thread. In this embodiment, one end of the water inlet pipe 200 is inserted into the water tank 100, and the other end of the water inlet pipe 200 extends outward to the outside of the water tank 100, one end of the water inlet valve 400 is connected to the other end of the water inlet pipe 200, and the other end of the water inlet valve 400 is connected to the tap water pipe 700. As an alternative, the water inlet pipe 200 can also include a plurality of water inlet pipe sections, and the water inlet valve 400 is installed between two water inlet pipe sections. The water outlet valve 500 is installed in the water outlet pipe 300, and the water outlet valve 500 can be installed on the water outlet pipe 300 through a pipe thread. In this embodiment, the water outlet pipe 300 includes multiple water outlet pipe sections 310, one end of which is inserted into the water tank 100 and extends outward to the outside of the water tank 100, the other end of which is connected to the water terminal 800, and the water outlet valve 500 is installed between the two water outlet pipe sections 310. The connecting pipe 600 is connected between the water inlet valve 400 and the water outlet valve 500, and the connecting pipe 600 can be a hard pipe or a hose.

[0030] Reference Figure 2 and Figure 3 As shown, the water inlet valve 400 includes a first housing 410 and a first valve core 420. The first housing 410 has a first valve hole 411, a balancing chamber 412, a first water inlet chamber 413 and a first water outlet chamber 414. The first water inlet chamber 413 and the first water outlet chamber 414 are located at both ends of the first valve hole 411, the first water inlet chamber 413 is located at the water inlet end of the first valve hole 411, the first water outlet chamber 414 is located at the water outlet end of the first valve hole 411, the balancing chamber 412 is connected with the first water inlet chamber 413, the balancing chamber 412 can be formed by protruding outwards through the side wall of the first housing 410, and the balancing chamber 412 can be directly connected with the first water inlet chamber 413, or indirectly connected with the first water inlet chamber 413 through other components of the water inlet valve 400. The first valve core 420 is configured to be able to move in the first housing 410 in the up-down direction. When the first valve core 420 moves downward, the first valve hole 411 is closed. When the first valve core 420 moves upward, the first valve hole 411 is opened. In order to achieve water sealing of the water inlet valve 400, a first sealing portion 430 is provided at the lower end of the first valve core 420. The first sealing portion 430 is used to block the first valve hole 411. Figure 2 As shown, when the first valve core 420 moves downward to the lower limit position, the first sealing portion 430 seals the first valve hole 411 to close the water inlet valve 400; Figure 3As shown, when the first valve core 420 moves upward, the first sealing portion 430 is separated from the first valve hole 411, thereby opening the water inlet valve 400. It is understandable that the first sealing portion 430 may be a sealing plug or a sealing ring, and the first sealing portion 430 may be made of sealing materials such as rubber and silicone.

[0031] Reference Figure 8 and Fig. 9 As shown, the water outlet valve 500 includes a second housing 510, a second valve core 520 and a lever mechanism 530. The second housing 510 has a second valve hole 511, and the second valve core 520 is configured to be able to move in the second housing 510 in the up-down direction. When the second valve core 520 moves downward, the second valve hole 511 is opened, and when the second valve core 520 moves upward, the second valve hole 511 is closed. In the embodiment of the present invention, since the water terminal 800 has a switch valve 810, the water flow in the water outlet valve 500 does not flow when the switch valve 810 is in a closed state, so the second valve core 520 does not need to seal the second valve hole 511 when closing the second valve hole 511. The outer wall of the second housing 510 is provided with a connecting hole 512, and the interior of the connecting pipe 600 is connected to the connecting hole 512 and the balancing chamber 412. The lever mechanism 530 is rotatably connected to the second valve core 520, and the lever mechanism 530 includes a second sealing portion 531, and the second sealing portion 531 is used to block the connecting hole 512. When the second valve core 520 moves upward to the upper limit position, the second valve core 520 drives the lever mechanism 530 to rotate downward, so that the second sealing portion 531 seals the connecting hole 512, and the second shell 510 and the balancing chamber 412 are not connected; when the second valve core 520 moves downward, the second valve core 520 drives the lever mechanism 530 to rotate upward, the second connecting hole 512 is opened, and the second shell 510 and the balancing chamber 412 are connected.

[0032] Reference Figure 1As shown, in the water heater of the embodiment of the present invention, when the water terminal 800 is in the closed state, the second housing 510 is filled with water and the water does not flow, so that the second valve core 520 can move upward and drive the lever mechanism 530 to rotate so as to keep the state of closing the connecting hole 512, and the balance chamber 412 is connected with the first water inlet chamber 413 so that the pressure in the first housing 410 is balanced, so the first valve core 420 moves downward and keeps the state of closing the first valve hole 411, that is, the water inlet valve 400 is in the closed state. When the water tank 100 leaks, the pressure in the water tank 100 decreases, the pressure in the first water outlet chamber 414 decreases, and the pressures in the first water inlet chamber 413 and the balance chamber 412 remain unchanged, so the first valve core 420 still keeps the state of closing the first valve hole 411 under the action of water pressure, and because the pressure difference between the first water outlet chamber 414 and the first water inlet chamber 413 increases (that is, the pressure difference at both ends of the first valve hole 411 increases), the first sealing part 430 has a better squeezing and sealing effect on the first valve hole 411. Since the water inlet valve 400 is in a closed state, the water tank 100 cannot be replenished with water through the water inlet pipe 200. When the water tank 100 leaks a portion of water, the pressure inside the water tank 100 is balanced with the atmospheric pressure, that is, the air pressure inside and outside the water leakage hole of the water tank 100 is equal, so that the water in the water tank 100 cannot leak out through the water leakage hole, and the water tank 100 will stop leaking. Therefore, the water heater of this embodiment can effectively suppress the problem of continuous water leakage of the water tank 100.

[0033] Reference Fig.14 As shown, in the water heater of the embodiment of the present invention, when the switch valve 810 of the water terminal 800 is opened, water flows out of the water outlet pipe 300, and the water flow in the second housing 510 is driven to flow, so that the second valve core 520 can move downward and drive the lever mechanism 530 to rotate upward, the second valve hole 511 and the connecting hole 512 are opened, and the water in the balance chamber 412 flows into the second housing 510. The water flow in the first water inlet chamber 413 enables the first valve core 420 to move upward to open the first valve hole 411, that is, the water inlet valve 400 is in an open state, and water is replenished into the water tank 100 through the water inlet valve 400. Moreover, referring to Figure 1 As shown, when the switch valve 810 of the water use terminal 800 is closed, the water outlet pipe 300 stops discharging water, the water flow in the second shell 510 stops flowing, the second valve core 520 can move upward and drive the lever mechanism 530 to rotate downward, the second valve hole 511 is closed, and the connecting hole 512 is closed by the second sealing portion 531. The interior of the second shell 510 is not connected to the balancing chamber 412. Since the balancing chamber 412 and the first water inlet chamber 413 are still connected, the pressure of the balancing chamber 412 and the first water inlet chamber 413 is balanced, so that the first valve core 420 can move downward to close the first valve hole 411 through the first sealing portion 430, and the water inlet valve 400 is in a closed state. The water tank 100 cannot be replenished with water through the water inlet pipe 200.

[0034] It can be understood that, in another embodiment of the water heater of the present invention, when the water terminal 800 is in an open state, the second valve core 520 moves downward under the action of the outgoing water flow to open the second valve hole 511, the water outlet valve 500 opens in time to discharge water, and the second valve core 520 drives the lever mechanism 530 to rotate upward to open the connecting hole 512, the first valve core 420 moves upward under the action of the incoming water flow to open the first valve hole 411, and the water inlet valve 400 is opened in time to replenish water to the water tank 100. When the water terminal is in a closed state, the second valve core 520 moves upward under the action of buoyancy to close the second valve hole 511, and the second valve core 520 drives the lever mechanism 530 to rotate downward to close the connecting hole 512, and the first valve core 420 moves downward under the action of its own weight to close the first valve hole 411, thereby realizing the closing of the water outlet valve 500 and the water inlet valve 400. When the water tank 100 leaks, the pressure inside the water tank 100 decreases, the pressure in the first water outlet chamber 414 decreases, and the pressure in the first water inlet chamber 413 and the balance chamber 412 remains unchanged. Therefore, the first valve core 420 still maintains the state of closing the first valve hole 411 under the action of water pressure, and because the pressure difference between the first water outlet chamber 414 and the first water inlet chamber 413 increases (that is, the pressure difference at both ends of the first valve hole 411 increases), the first sealing part 430 has a better squeezing and sealing effect on the first valve hole 411. Since the water inlet valve 400 is in a closed state, the water tank 100 cannot be replenished with water through the water inlet pipe 200. When the water tank 100 leaks a part of water, the pressure inside the water tank 100 is balanced with the atmospheric pressure, and the water tank 100 stops leaking. Therefore, the water heater of this embodiment can effectively suppress the problem of continuous water leakage of the water tank 100.

[0035] Reference Figure 2 and Figure 4 As shown, in a water inlet valve 400 according to an embodiment of the present invention, the first valve core 420 includes a first float valve 421, and the first float valve 421 is in a strip shape extending in the up-down direction. The first float valve 421 includes a first flow guide portion 4211 and a first actuating portion 4212, and the first flow guide portion 4211 and the first actuating portion 4212 are arranged in the up-down direction. The first actuating portion 4212 is connected to the upper end of the first flow guide portion 4211, and the first actuating portion 4212 is located in the balance chamber 412.

[0036] The first flow guide 4211 is provided with a first flow channel 440, and the first flow channel 440 allows water to flow into the first float valve 421, and the water in the first water inlet chamber 413 can enter the balance chamber 412 through the first flow channel 440. The first flow channel 440 is provided with a first middle section 441 extending in the up-down direction, and the first middle section 441 is connected to the end of the first flow channel 440, and the starting end of the first flow channel 440 can be set to penetrate the outer peripheral wall of the first flow guide 4211, so as to guide the water in the first water inlet chamber 413 to the first middle section 441.

[0037] The first actuating portion 4212 is disposed at the end of the first flow channel 440. After the water flows through the first middle section 441, it impacts the first actuating portion 4212 at the end of the first flow channel 440, providing a force for the first float valve 421 to move upward. The first actuating portion 4212 is provided with a first water outlet 4213 on a side wall close to the first flow channel 440, and the first water outlet 4213 communicates with the first flow channel 440 and the outer peripheral wall of the first actuating portion 4212. The first water outlet 4213 is used for the water flow of the first flow channel 440 to be discharged along the outer peripheral wall of the first actuating portion 4212. It is understandable that a plurality of first water outlets 4213 may be provided, and the plurality of first water outlets 4213 are evenly distributed along the circumference of the first actuating portion 4212, which is conducive to the force balance of the first float valve 421.

[0038] A first groove 4214 is provided on one side of the first actuating portion 4212 facing the first flow channel 440, and the first groove 4214 is directly opposite to the end of the first flow channel 440. Water flows into the first groove 4214 and then flows out through the first water outlet 4213, which can concentrate the force of the water flow on the first actuating portion 4212, so that the force on the first float valve 421 is more uniform.

[0039] Reference Figure 4 As shown, the cross-sectional area of ​​the first middle section 441 is larger than the cross-sectional area of ​​the end of the first flow channel 440 . The reduction in the cross-sectional area of ​​the first flow channel 440 is beneficial to increasing the impact force of the water flow at the end of the first flow channel 440 , thereby increasing the upward movement speed of the first valve core 420 .

[0040] Reference Figure 2 and Figure 3 As shown, in a water inlet valve 400 according to an embodiment of the present invention, the first valve hole 411 is located at the lower end of the movement path of the first float valve 421, and correspondingly, the balance chamber 412 can be provided at the upper end of the movement path of the first float valve 421. The first sealing portion 430 is provided at one end of the first float valve 421 close to the first valve hole 411, so when the first float valve 421 moves downward to the lower limit, the first valve hole 411 can be sealed and closed by the first sealing portion 430. It can be understood that the first sealing portion 430 is annular and has a first concave portion 431 that is concave in the radial direction on the inner side, and the first convex portion 4215 that protrudes outward in the radial direction is provided at the bottom of the first float valve 421, and the first convex portion 4215 and the first concave portion 431 cooperate to realize the wrapping and stable connection of the first sealing portion 430 to the first float valve 421.

[0041] The starting end of the first flow channel 440 is arranged on the outer peripheral wall of the first float valve 421, and when the first sealing portion 430 closes the first valve hole 411, the starting end of the first flow channel 440 is located in the first water inlet chamber 413. Therefore, when the water flows in the first water inlet chamber 413, the water can quickly enter the first flow channel 440, thereby driving the first float valve 421 to move upward, thereby opening the first valve hole 411.

[0042] Reference Figure 2 and Figure 3 As shown, in a water inlet valve 400 according to an embodiment of the present invention, when the first valve core 420 moves upward to an end away from the first valve hole 411, the starting end of the first flow channel 440 is located in the first water inlet chamber 413. That is, when the first float valve 421 is on any movement path, the first flow channel 440 always connects the first water inlet chamber 413 and the balance chamber 412. When the first float valve 421 moves upward to the upper limit position and the connecting hole 512 is in an open state, the first sealing portion 430 abuts against the upper wall surface of the first water inlet chamber 413, the starting end of the first flow channel 440 connects to the first water inlet chamber 413, and part of the water flow of the first water inlet chamber 413 enters the water outlet valve 500 through the first flow channel 440, the balance chamber 412, and the connecting pipe 600. When the connecting hole 512 is in a closed state, the first water inlet chamber 413 takes in water through the first flow channel 440 until the pressure is balanced with the balance chamber 412 . At this time, the first float valve 421 moves downward under the action of gravity and closes the first valve hole 411 .

[0043] Reference Figure 2 As shown, in an inlet valve 400 according to an embodiment of the present invention, the first housing 410 further includes a first guide sleeve 415, the first guide sleeve 415 extends in the up-down direction, the first float valve 421 is slidably connected in the first guide sleeve 415, and the first guide sleeve 415 guides and limits the movement of the first float valve 421 in the up-down direction, thereby improving the movement stability of the first float valve 421. The outer peripheral wall of the first float valve 421 is provided with a first guide block 4216, and the first guide block 4216 is slidably matched with the inner wall of the first guide sleeve 415, thereby improving the movement reliability of the first float valve 421.

[0044] The first shell 410 also includes an upper limit portion 416. When the first valve core 420 moves upward to an end away from the first valve hole 411, the first sealing portion 430 abuts against the upper limit portion 416, which helps prevent the bottom of the first valve core 420 from colliding with the first shell 410 and causing damage, resulting in a deterioration in the sealing effect of the first valve hole 411.

[0045] In order to facilitate the connection of the connecting pipe 600 , the first shell 410 is provided with a first joint 417 . The first joint 417 is fixedly connected to the outer wall of the balancing chamber 412 and is located outside the first shell 410 . The interior of the first joint 417 is connected to the balancing chamber 412 .

[0046] Reference Figure 5 , Figure 6 and Figure 7 As shown, the structure of the water inlet valve 400 of another embodiment of the present invention is basically the same as that of the water inlet valve 400 of the previous embodiment, and can be understood by referring to the previous embodiment. In order to avoid repetition, it will not be described again. The difference of the water inlet valve 400 of another embodiment of the present invention is that when the first valve core 420 moves upward to the end away from the first valve hole 411, the starting end of the first flow channel 440 is located in the balance chamber 412, that is, the first flow channel 440 cannot connect the first water inlet chamber 413 and the balance chamber 412. Therefore, in order to connect the first water inlet chamber 413 and the balance chamber 412, the inner wall of the balance chamber 412 is provided with a fourth water outlet hole 4121, and the fourth water outlet hole 4121 is used to keep the first water inlet chamber 413 and the balance chamber 412 connected. When the first valve core 420 moves upward to the upper limit and the connecting hole 512 is in an open state, the first sealing portion 430 abuts against the upper wall of the first water inlet chamber 413, and part of the water flow of the first water inlet chamber 413 enters the water outlet valve 500 through the fourth water outlet hole 4121, the balancing chamber 412, and the connecting pipe 600. When the connecting hole 512 is in a closed state, the first water inlet chamber 413 enters water through the fourth water outlet hole 4121 until the pressure is balanced with the balancing chamber 412, and at this time, the first valve core 420 moves downward under the action of gravity and closes the first valve hole 411.

[0047] Reference Figure 8 and Fig.10 As shown, the second valve core 520 of an embodiment of the present invention includes a second float valve 521 and a floating ball 522, and the second float valve 521 and the floating ball 522 are located in the second housing 510. The floating ball 522 is annular, and the floating ball 522 is fixedly connected to the outer peripheral wall of the second float valve 521. The floating ball 522 is used to drive the second valve core 520 to float up when the water in the second housing 510 does not flow, so as to achieve upward movement. The second float valve 521 is used to drive the second valve core 520 to move downward when the water in the second housing 510 flows.

[0048] The second float valve 521 includes a second flow guide portion 5211 and a second actuating portion 5212. The second float valve 521 is in the shape of a long strip extending in the vertical direction. The second flow guide portion 5211 and the second actuating portion 5212 are arranged in the up-down direction. The second flow guide portion 5211 is connected to the upper end of the second actuating portion 5212, and the second sealing portion 531 is connected to the upper end of the second flow guide portion 5211. The second flow guide portion 5211 is provided with a second flow channel 540 for water to flow into the interior of the second float valve 521. The second flow channel 540 is provided with a second middle section 541 extending in the up-down direction. The starting end of the second flow channel 540 can be set to penetrate the upper end of the second flow guide portion 5211, or can be set to penetrate the outer peripheral wall of the second flow guide portion 5211, so as to guide the water flowing in the second housing 510 to the second middle section 541.

[0049] The second actuating portion 5212 is disposed at the end of the second flow channel 540. After the water flows through the second middle section 541, it impacts the second actuating portion 5212 at the end of the second flow channel 540, providing a force for the second float valve 521 to move downward. The force of the water flow on the second float valve 521 is greater than the buoyancy of the float ball 522 on the second float valve 521, so that the second valve core 520 can move downward under the drive of the flowing water flow. The outer peripheral wall of the second actuating portion 5212 is provided with a second water outlet hole 5213, which is connected to the second middle section 541. The second water outlet hole 5213 is used to discharge the water flow of the second flow channel 540 from the outer peripheral wall of the second actuating portion 5212, so that the second flow channel 540 discharges water along the radial direction of the second float valve 521. It is understandable that a plurality of second water outlet holes 5213 may be provided, and the plurality of second water outlet holes 5213 are evenly distributed along the circumference of the second actuating portion 5212 , which is beneficial to the force balance of the second float valve 521 .

[0050] A second groove 5214 is provided on one side of the second actuating portion 5212 facing the second flow channel 540, and the second groove 5214 is directly opposite to the end of the second flow channel 540. Water flows into the second groove 5214 and then flows out through the second water outlet 5213, which can concentrate the force of the water flow on the second actuating portion 5212, so that the force on the second float valve 521 is more uniform.

[0051] Reference Figure 8 and Fig.10As shown, in a water outlet valve 500 according to an embodiment of the present invention, the second valve hole 511 is located at the upper end of the movement path of the second float valve 521, and the two ends of the second valve hole 511 respectively form a second water inlet chamber 513 and a second water outlet chamber 514. The upper end of the second float valve 521 is a closed structure (without the second flow channel 540), and the closed structure is used to close the second valve hole 511. The starting end of the second flow channel 540 is arranged at the outer peripheral wall of the second float valve 521, and the water flows into the second middle section 541 of the second flow channel 540 through the outer peripheral wall of the second float valve 521, and the end of the second flow channel 540 is located at the lower end of the second guide portion 5211. When water flows through the water outlet valve 500, the second valve core 520 moves downward under the impact of the water flow. At this time, the second valve hole 511 is opened by the closed structure, and part of the water flows through the second valve hole 511 into the second water outlet chamber 514, and the other part of the water flows into the second flow channel 540 and is discharged through the second water outlet hole 5213. The two streams of water converge in the second shell 510 and then discharge from the water outlet valve 500.

[0052] Reference Fig.10 As shown, the lever mechanism 530 of the embodiment of the present invention includes a second sealing portion 531, a support 532 and a lever 533. One end of the lever 533 is hinged to the second actuating portion 5212, the other end of the lever 533 is connected to the second sealing portion 531, and the support 532 is hinged to the middle of the lever 533. Therefore, when the second valve core 520 moves upward, the second sealing portion 531 is driven to rotate downward through the lever 533; when the second valve core 520 moves downward, the second sealing portion 531 is driven to rotate upward through the lever 533.

[0053] Reference Figure 8 and Fig. 9 As shown, in the water outlet valve 500 of the embodiment of the present invention, the connecting hole 512 is located at the lower end of the second shell 510, and the lower end of the second sealing portion 531 is provided with a second recess 5311, and the second shell 510 forms a second convex portion 515 at the connecting hole 512. When the second valve core 520 moves upward and drives the second sealing portion 531 to the position of sealing the connecting hole 512, the second recess 5311 and the second convex portion 515 are matched with each other, thereby improving the sealing effect of the second sealing portion 531 on the connecting hole 512.

[0054] It can be understood that the connecting hole 512 is arranged on the outer wall of the second water inlet chamber 513 or the outer wall of the second water outlet chamber 514, that is, it connects the second water inlet chamber 513 or the second water outlet chamber 514. The specific design can be based on the structure of the actual product and is not specifically limited here.

[0055] In order to facilitate the connection of the connecting pipe 600, the second housing 510 is provided with a second joint 516, which is fixedly connected to the outer side of the lower end of the second housing 510, and the interior of the second joint 516 is connected to the communication hole 512. Accordingly, the first joint 417 is fixedly connected to the outer side of the upper end of the first housing 410, which further improves the convenience of connecting the connecting pipe 600 with the first joint 417 and the second joint 516, and is conducive to shortening the connection length of the connecting pipe 600 and improving the spatial layout of the water inlet valve 400 and the water outlet valve 500.

[0056] Reference Figure 8 and Fig. 9 As shown, in a water outlet valve 500 according to an embodiment of the present invention, the second housing 510 further includes a second guide sleeve 517, the second guide sleeve 517 extends in the up-down direction, the second float valve 521 is slidably connected in the second guide sleeve 517, and the second guide sleeve 517 guides and limits the movement of the second float valve 521 in the up-down direction, thereby improving the movement stability of the second float valve 521. The outer peripheral wall of the second float valve 521 is provided with a second guide block 523, and the second guide block 523 is slidably matched with the inner wall of the second guide sleeve 517, thereby improving the movement reliability of the second float valve 521.

[0057] Continue to refer to Figure 8 and Fig. 9 As shown, the second housing 510 further includes a lower limit portion 518, which can be fixedly connected to the second guide sleeve 517. When the second valve core 520 moves to one end close to the connecting hole 512, the float 522 abuts against the lower limit portion 518, which helps to prevent the bottom of the second valve core 520 from colliding with the second housing 510 and causing damage.

[0058] Reference Figure 8 As shown, the second shell 510 has a downwardly extending water storage chamber 519, which can store a certain amount of water. At least part of the structure of the second valve core 520 is located in the water storage chamber 519, so as to ensure that when the water flow in the second shell 510 stops flowing, the second valve core 520 can rely on the buoyancy of the water in the water storage chamber 519 to move upward to close the connecting hole 512; and when the water tank 100 leaks, the second valve core 520 can also rely on the buoyancy of the water in the water storage chamber 519 to keep the connecting hole 512 closed, thereby suppressing the continuous leakage of the water tank 100.

[0059] Reference Figure 1 and Figure 8As shown, the water outlet pipe 300 has a second inlet end 320 located in the water tank 100, and the upper end surface of the second inlet end 320 is higher than the upper end surface of the float 522. Therefore, when the water flow of the water outlet pipe 300 stops flowing, the second valve core 520 can move upward by relying on the buoyancy of the water in the second shell 510 to close the communication hole 512; and when the water tank 100 leaks, there is still a certain amount of water in the second shell 510, and the second valve core 520 can also rely on the buoyancy of the remaining water in the second shell 510 to keep the communication hole 512 closed, thereby preventing the water tank 100 from continuously leaking.

[0060] Reference Fig.11 , Fig.12 and Fig.13 As shown, the structure of the water outlet valve 500 of another embodiment of the present invention is basically the same as that of the water outlet valve 500 of the previous embodiment, and can be understood by referring to the previous embodiment. In order to avoid repetition, it will not be described again. The difference of the water outlet valve 500 of another embodiment of the present invention is that the second valve hole 511 is located on the side opposite to at least part of the outer peripheral wall of the second float valve 521, and the second housing 510 forms a second water inlet chamber 513 and a second water outlet chamber 514 at both ends of the second valve hole 511. The center line of the second flow channel 540 is arranged in the up-down direction, and the second flow channel 540 passes through the second guide part 5211, that is, the starting end of the second flow channel 540 is located at the upper end of the second guide part 5211, and the end of the second flow channel 540 is located at the lower end of the second guide part 5211. The outer peripheral wall of the second guide part 5211 is provided with a third water outlet hole 5215, and the third water outlet hole 5215 is connected to the second middle section 541 of the second guide part 5211, and the water flows out of the second valve hole 511 through the third water outlet hole 5215. When water flows through the water outlet valve 500, the second valve core 520 moves downward under the impact of the water flow. At this time, the second valve hole 511 is opened, that is, the third water outlet hole 5215 and the second valve hole 511 are at least partially aligned. After the water flows into the second flow channel 540, part of the water flows out through the third water outlet hole 5215 and the second valve hole 511, and the other part of the water flows out through the second water outlet hole 5213. The two streams of water converge in the second shell 510 and then flow out of the water outlet valve 500.

[0061] Reference Figure 1 and Figure 5As shown, the water heater of another embodiment of the present invention further includes a one-way valve 450, which is used to allow water to flow from the water inlet valve 400 to the water tank 100, while blocking water from the water tank 100 to the water inlet valve 400. The one-way valve 450 is installed in the water inlet valve 400, for example, located in the first water outlet chamber 414, which can effectively prevent the water inlet pipe on one side of the water tank 100 from impacting the water inlet valve 400, and the one-way valve 450 is integrated into the water inlet valve 400 for easy installation. As an alternative, the one-way valve 450 can also be installed in the water inlet pipe 200, for example, between the water tank 100 and the water inlet valve 400.

[0062] Reference Figure 1 and Figure 5 As shown, the water heater of another embodiment of the present invention further includes a filter 460, which is used to filter the tap water entering the water inlet valve 400 and the water tank 100, which is beneficial to improve the service life of the water inlet valve 400 and the water tank 100. The filter 460 is located in the first water inlet chamber 413, and the filter 460 is integrated into the water inlet valve 400 for easy installation. As an alternative, the filter 460 can also be installed in the water inlet pipe near the water inlet end of the water inlet valve 400.

[0063] Reference Figure 1 As shown, in the water heater of the embodiment of the present invention, the water inlet pipe 200 has a first inlet end 220 located in the water tank 100, and the first inlet end 220 is arranged downward, which is beneficial to the heating effect of the water tank 100 on the water and reduces the mixing of cold and hot water.

[0064] Reference Figure 1 As shown, in the water heater of the embodiment of the present invention, the water outlet pipe 300 has a second inlet end 320 located in the water tank 100, and the second inlet end 320 is arranged upward, which is beneficial to the heating effect of the water tank 100 on the water, and the water outlet pipe 300 can be kept full of water.

[0065] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A water heater, characterized in that: include: Water tank; A water inlet pipe, used to connect the water source to the inside of the water tank; A water outlet pipe, used to connect the interior of the water tank and a water use terminal; a water inlet valve installed in the water inlet pipe, the water inlet valve comprising a first housing and a first valve core, the first housing having a first valve hole, a balancing chamber, and a first water inlet chamber and a first water outlet chamber located at two ends of the first valve hole, the balancing chamber being in communication with the first water inlet chamber, the first valve core comprising a first sealing portion for blocking the first valve hole, the first valve core being configured to move downward to close the first valve hole through the first sealing portion, or to move upward to open the first valve hole; a water outlet valve installed in the water outlet pipe, the water outlet valve comprising a second shell, a second valve core and a lever mechanism, the second shell having a second valve hole and a communication hole, the communication hole being located on the outer wall of the second shell, the lever mechanism comprising a second sealing portion for blocking the communication hole, the second valve core being rotatably connected to the lever mechanism, the second valve core being configured to move downward to open the second valve hole and drive the lever mechanism to open the communication hole, or to move upward to drive the second sealing portion to close the communication hole; A connecting pipe connects the water inlet valve and the water outlet valve, and the interior of the connecting pipe communicates with the balancing chamber and the communicating hole.

2. The water heater according to claim 1, characterized in that: The second valve core is configured to be able to move downward when the water outlet pipe discharges water, and to be able to move upward when the water outlet pipe stops discharging water.

3. The water heater according to claim 2, characterized in that: The second valve core includes a second float valve and a floating ball, the floating ball is fixedly connected to the outer peripheral wall of the second float valve, the second float valve includes a second guide part and a second actuating part, the second guide part is connected to the upper end of the second actuating part, the second guide part is provided with a second flow channel for water to flow into the second float valve, the second actuating part is arranged at the end of the second flow channel, and the second actuating part is provided with a second water outlet hole connecting the second flow channel and the outer peripheral wall of the second actuating part on a side wall close to the second flow channel.

4. The water heater according to claim 3, characterized in that: The second valve hole is located at one end of the movement path of the second float valve, and the starting end of the second flow channel is arranged on the outer peripheral wall of the second float valve; or, The second valve hole is located on a side opposite to at least part of the outer peripheral wall of the second float valve, the starting end of the second flow channel is arranged at an end of the second guide part away from the second actuating part, and the outer peripheral wall of the second guide part is provided with a third water outlet hole capable of connecting the second flow channel and the second valve hole.

5. The water heater according to claim 3, characterized in that: The water outlet pipe has a second inlet end located in the water tank, and the upper end surface of the second inlet end is higher than the upper end surface of the float.

6. The water heater according to claim 3, characterized in that: The lever mechanism further comprises a support and a lever, one end of the lever is hinged to the second actuating portion, and the other end of the lever is connected to the second sealing portion, and the support is hinged to the middle portion of the lever.

7. The water heater according to claim 1, characterized in that: The first valve element is configured to be movable upward when the communication hole is opened, and to be movable downward when the communication hole is closed.

8. The water heater according to claim 7, characterized in that: The first valve core includes a first float valve, which includes a first guide part and a first actuating part. The first actuating part is connected to the upper end of the first guide part and is located in the balancing chamber. The first guide part is provided with a first flow channel for water to flow into the first float valve. The first actuating part is provided at the end of the first flow channel. The first actuating part is provided with a first water outlet hole on a side wall close to the first flow channel, which is connected to the first flow channel and the outer peripheral wall of the first actuating part.

9. The water heater according to claim 8, characterized in that: The first valve hole is located at one end of a movement path of the first float valve, the first sealing portion is provided at one end of the first float valve close to the first valve hole, the starting end of the first flow channel is provided at an outer peripheral wall of the first float valve, and when the first sealing portion closes the first valve hole, the starting end of the first flow channel is located in the first water inlet cavity.

10. The water heater according to claim 8, characterized in that: The first valve core is configured to move upward to an end away from the first valve hole, so that the starting end of the first flow channel is located in the balancing cavity, and the inner wall of the balancing cavity is provided with a fourth water outlet hole connected to the first water inlet cavity; or, The first valve core is configured such that when it moves upward to an end away from the first valve hole, the starting end of the first flow channel is located in the first water inlet cavity.

11. The water heater according to claim 1, characterized in that: The water heater further comprises a one-way valve, and the one-way valve is installed in the first water outlet cavity.

12. The water heater according to claim 1, characterized in that: The water outlet pipe has a second inlet end located in the water tank, and the second inlet end is arranged upward; and / or, The water inlet pipe has a first inlet end located in the water tank, and the first inlet end is arranged downward.

13. A water heater, characterized in that: include: Water tank; A water inlet pipe, used to transport water to the water tank; A water outlet pipe, used to transport the water in the water tank to a water use terminal; a water inlet valve installed in the water inlet pipe, the water inlet valve comprising a first housing and a first valve core, the first housing having a first valve hole, a balancing chamber, and a first water inlet chamber and a first water outlet chamber located at both ends of the first valve hole, the balancing chamber being in communication with the first water inlet chamber, and the first valve core comprising a first sealing portion for blocking the first valve hole; a water outlet valve installed in the water outlet pipe, the water outlet valve comprising a second housing, a second valve core and a lever mechanism, the second housing having a second valve hole and a communication hole, the communication hole being located on an outer wall of the second housing, the lever mechanism comprising a second sealing portion for blocking the communication hole, the second valve core being rotatably connected to the lever mechanism; A connecting pipe, connecting the water inlet valve and the water outlet valve, wherein the interior of the connecting pipe is connected to the balancing chamber and the communicating hole; Wherein, when the water terminal is in an open state, the second valve core moves downward under the action of the outgoing water flow to open the second valve hole, and drives the lever mechanism to rotate upward to open the connecting hole, and the first valve core moves upward under the action of the incoming water flow to open the first valve hole; When the water terminal is in a closed state, the second valve core moves upward under the action of buoyancy to close the second valve hole, and drives the lever mechanism to rotate downward to close the connecting hole, and the first valve core moves downward under the action of its own gravity to close the first valve hole.

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