Water dispenser

Abstract

The utility model relates to the technical field of water dispensers, in particular to a water dispenser which comprises a tank assembly and a waterway board assembly, and the tank assembly is provided with a medium containing cavity; the waterway board assembly comprises a waterway board main body and a temperature sensor, the waterway board main body is provided with a waterway system communicated with the medium containing cavity, the temperature sensor is detachably inserted into the waterway board main body, and the temperature sensor extends into the medium containing cavity. The temperature sensor is arranged on the waterway board main body and is inserted into the medium accommodating cavity, so that the temperature sensor arranged on the waterway board main body can be efficiently disassembled and assembled.

Description

Technical Field

[0001] This application relates to the field of water dispenser technology, specifically to a water dispenser. Background Technology

[0002] With the advancement of technology, people have developed diverse needs for domestic water. Water dispensers can treat the water entering the dispenser, such as adjusting the water temperature and quality to meet user requirements, before dispensing the treated water to users, greatly facilitating their lives. To monitor the various conditions inside the water dispenser, especially the tank that holds a large volume of water, numerous sensors are usually installed inside the tank and at the inlet and outlet. These sensors can acquire information such as the water temperature, the flow rate of water entering and leaving the tank, the water pressure inside the tank, and the water quality.

[0003] However, since these sensors are all located inside the tank, it is difficult to repair or replace the sensors inside the tank when they malfunction after the water dispenser has been running for a period of time. This causes the water dispenser to malfunction and significantly affects its lifespan. Utility Model Content

[0004] In view of this, this application provides a water dispenser that can efficiently install and remove sensors from the water dispenser.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a water dispenser, including a tank assembly and a water circuit board assembly. The tank assembly has a medium cavity; the water circuit board assembly includes a water circuit board body and a temperature sensor. The water circuit board body has a water circuit system communicating with the medium cavity. The temperature sensor is detachably inserted into the water circuit board body and extends into the medium cavity; the water circuit board assembly further includes a first mounting tube, one end of which is connected to the water circuit board body and the other end extends into the medium cavity. The temperature sensor is inserted and fixed in the first mounting tube; the water circuit board body includes a first water circuit board and a second water circuit board, the first water circuit board and the second water circuit board are fixedly connected, the first mounting tube is disposed on the first water circuit board, and the second water circuit board has a pressure rod; the temperature sensor includes a temperature probe and a first mounting part connected to each other. The temperature probe passes through the first mounting tube and is located in the medium cavity, and the pressure rod abuts against the first mounting part.

[0006] In one specific embodiment, the tank assembly includes a sealing cap and a hot tank with an open top. The sealing cap seals the open top to form a medium cavity. The sealing cap has a sealing hole. The first mounting tube is inserted into the sealing hole, and the first mounting tube is interference-fitted with the sealing cap around the sealing hole.

[0007] In one specific embodiment, the water circuit board assembly further includes a first flow sensor; the water circuit system includes a medium output water circuit for connecting the medium cavity and the heat exchanger, wherein the medium flows from the medium cavity to the heat exchanger in the medium output water circuit; the water circuit system includes a return water circuit for connecting the medium cavity and the heat exchanger, wherein the medium flows from the heat exchanger to the medium cavity in the return water circuit, and the first flow sensor is disposed in the medium output water circuit.

[0008] In one specific embodiment, the water circuit board body further includes a first mounting interface, the first mounting interface being connected to the medium output water circuit, and the first flow sensor being detachably plugged into and fixed to the first mounting interface.

[0009] In one specific embodiment, the water circuit board assembly further includes a second flow sensor; the water circuit system includes a water input circuit for connecting a water source and a heat exchanger, wherein water flows from the water source to the heat exchanger in the water input circuit, and the second flow sensor is disposed in the water input circuit; the water circuit system includes a water output circuit for outputting water heated by the heat exchanger, wherein water flows from the heat exchanger to the outside in the water output circuit.

[0010] In one specific embodiment, the water circuit board body further includes a second mounting interface, the second mounting interface being connected to the water input circuit, and the second flow sensor being detachably plugged into and fixed to the second mounting interface.

[0011] In one specific embodiment, the water circuit board assembly further includes a pressure sensor, the tank assembly is provided with a socket that communicates with the medium cavity, the detection end of the pressure sensor is detachably inserted into the medium cavity through the socket, and the pressure sensor blocks the socket; the water circuit board body is provided with a clearance hole that exposes the pressure sensor.

[0012] In one specific embodiment, the water dispenser further includes a pressure control circuit and a normally closed pressure relief valve. The water circuit board body is provided with an exhaust passage connecting the medium cavity. The pressure relief valve is connected to the exhaust passage. The pressure control circuit is connected to the pressure relief valve and the pressure sensor. The pressure control circuit is used to control the pressure relief valve to connect the exhaust passage when the pressure sensor detects that the pressure exceeds the upper limit value.

[0013] In one specific embodiment, the water dispenser further includes an alarm circuit and an airtightness detection circuit, wherein the airtightness detection circuit is connected to the alarm circuit and the pressure sensor; the airtightness detection circuit is used to send an alarm signal to the alarm circuit when the pressure sensor detects that the pressure is too low and / or abnormal changes.

[0014] The beneficial effects of this application include: by setting the temperature sensor to be detachably inserted into the main body of the water circuit board, it is not necessary to open the tank when repairing or replacing the temperature sensor. The faulty temperature sensor can simply be pulled out from the water circuit board main body from the outside. The installation process is the same, which greatly improves the efficiency of temperature sensor disassembly and assembly, reduces the maintenance difficulty and cost of the water dispenser, and solves the problem of difficult sensor repair inside the water dispenser tank without affecting the temperature detection effect. The main body of the water circuit board is divided into a first water circuit board and a second water circuit board. After the temperature sensor is inserted into the first water circuit board, the pressure rod of the second water circuit board can further press down, making the assembly of the temperature sensor and the first mounting tube tighter, improving the sealing performance at the connection between the temperature sensor and the first mounting tube, and improving the maintainability, reliability and service life of the water dispenser. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 2 ;

[0018] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure shown in section BB;

[0019] Figure 4 yes Figure 3 Enlarged structural diagram of region A in the middle;

[0020] Figure 5 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 3 ;

[0021] Figure 6 This is a schematic block diagram of the water circuit structure of an embodiment of the water dispenser of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Water dispenser; 2. Tank assembly; 21. Hot tank; 211. Opening; 22. Sealing cap; 221. Sealing hole; 23. Medium cavity; 3. Water circuit board assembly; 31. Water circuit board body; 311. First water circuit board; 312. First mounting pipe; 313. Second water circuit board; 314. Pressure rod; 315. First mounting interface; 316. Second mounting interface; 317. Clearance hole; 4. Temperature sensor; 41. Temperature probe; 42. First... Installation section; 51. First flow sensor; 52. Second flow sensor; 53. Pressure sensor; 61. Medium output water path; 62. Return water path; 63. Water input water path; 64. Water output water path; 65. Exhaust passage; 66. Wastewater discharge path; 67. Water inlet path; 68. Water outlet path; 71. Heat exchanger; 72. Pressure relief valve; 8. Circuit board; 81. Pressure control circuit; 82. Air tightness detection circuit; 83. Alarm circuit. Detailed Implementation

[0024] In this application, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0029] With the advancement of technology, people have developed diverse needs for domestic water. Water dispensers can treat the water entering the dispenser, such as adjusting the water temperature and quality to meet user requirements, before dispensing the treated water to users, greatly facilitating their lives. To monitor the various conditions inside the water dispenser, especially the tank that holds a large volume of water, numerous sensors are usually installed inside the tank and at the inlet and outlet. These sensors can acquire information such as the water temperature, the flow rate of water entering and leaving the tank, the water pressure inside the tank, and the water quality.

[0030] However, since these sensors are all located inside the tank, it is difficult to repair or replace the sensors inside the tank when they malfunction after the water dispenser has been running for a period of time. This causes the water dispenser to malfunction and significantly affects its lifespan.

[0031] In order to improve or solve the above technical problems, the inventors of this application, after long-term research, have proposed at least the following embodiments.

[0032] See Figures 1-6 , Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 1 . Figure 2 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 2 . Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure shown in section BB. Figure 4 yes Figure 3 A magnified structural diagram of region A in the middle. Figure 5 This is a schematic diagram of the assembly structure of an embodiment of the water dispenser of this application. Figure 3 . Figure 6 This is a schematic block diagram of the water circuit structure of an embodiment of the water dispenser of this application. A specific embodiment of this application provides a water dispenser 1, including a tank assembly 2 and a water circuit board assembly 3.

[0033] The tank assembly 2 is provided with a medium cavity 23. The water circuit board assembly 3 includes a water circuit board body 31 and a temperature sensor 4. The water circuit board body 31 is provided with a water circuit system that connects to the medium cavity 23. The temperature sensor 4 is detachably inserted into the water circuit board body 31 and extends into the medium cavity 23.

[0034] In this context, a water dispenser 1 refers to a device that treats input water to meet user needs, typically used in home, commercial, or industrial settings. The water treatment methods may include at least one of filtration, heating, cooling, or softening. Specifically, a water dispenser 1 can be a water purifier, water heater, water softener, or chiller. The tank assembly 2 is the container in the water dispenser 1 used to store and hold water or other media; for example, the tank assembly 2 can be the heating element in a water heater. The media cavity 23 specifically refers to the hollow cavity inside the tank assembly 2 used to hold water or other media.

[0035] The water circuit board assembly 3 is a plate-shaped or block-shaped component that integrates various water circuit components such as valves, pumps, connectors, and sensors. It can be made of engineering plastics such as POM (polyoxymethylene). The water circuit board body 31 is the basic structural component in the water circuit board assembly 3. It is the plate or block itself that actually houses the water circuit system. Various water circuit components such as valves, pumps, connectors, and sensors are installed on the water circuit board body 31.

[0036] Temperature sensor 4 is an electronic component used to measure water temperature. In this design, it is designed to be pluggable. Specifically, temperature sensor 4 is typically a metal probe with a wire connector at the end. The probe is inserted into the water to acquire the water temperature signal, which is then converted into an electrical signal and transmitted to circuit board 8 via the wire connector.

[0037] The circuit board 8 can be a PCB (Printed Circuit Board). Circuit board 8 serves as the support for various electronic components in the water dispenser 1 and also as the carrier for electrical connections between these components. The circuit board 8 connects various electronic components together through copper foil traces, forming a specific circuit functional module that functions as a control, drive, or signal processing unit in the water dispenser 1. These electronic components may include chips, resistors, capacitors, interfaces, etc. Wire connectors can be connected to the interfaces on circuit board 8 through soldering, terminal plugging, etc., thereby introducing electrical signals into circuit board 8. The temperature detection circuit on circuit board 8 receives the electrical signal sent by temperature sensor 4 and analyzes the signal to determine the water temperature at the probe.

[0038] For example, circuit board 8 can also be responsible for receiving the user's water dispensing button command, controlling the heating power of the water body, controlling the start and stop of the water pump in the water circuit system, controlling the opening and closing of the valve body in the water circuit system, and displaying the water temperature and working status.

[0039] In the structure provided in this specific embodiment, by setting the temperature sensor 4 to be "detachably inserted" on the water circuit board body 31, it is not necessary to open the tank when repairing or replacing the temperature sensor 4. The faulty temperature sensor 4 can simply be pulled out from the water circuit board body 31 from the outside. The installation process is the same, which greatly improves the efficiency of disassembling and assembling the temperature sensor 4, reduces the maintenance difficulty and maintenance cost of the water dispenser 1, and solves the problem of difficult sensor repair inside the tank of the water dispenser 1 without affecting the temperature detection effect, thereby improving the maintainability, reliability and service life of the water dispenser 1.

[0040] See Figure 3 , Figure 4 In one specific embodiment of this application, the water circuit board assembly 3 further includes a first mounting tube 312, one end of which is connected to the water circuit board body 31 and the other end extends into the medium cavity 23, and the temperature sensor 4 is inserted and fixed inside the first mounting tube 312.

[0041] The first mounting tube 312 is a tubular component specifically designed for mounting and securing the temperature sensor 4. One end of the first mounting tube 312 is connected to and fixed to the water circuit board body 31, while the other end extends into the medium cavity 23 of the tank, providing a protected and well-defined mounting space for the temperature sensor 4.

[0042] In the structure provided in this specific embodiment, the first mounting tube 312 guides the temperature sensor 4, ensuring that the sensing end of the temperature sensor 4 can accurately and stably extend into the area to be monitored in the medium cavity 23, thereby obtaining the water temperature data of the preset area and avoiding measurement errors caused by improper installation of the temperature sensor 4. At the same time, the first mounting tube 312 also fixes the temperature sensor 4, thereby improving the mechanical strength and vibration and water flow impact resistance of the temperature sensor 4. This reduces the probability of the temperature sensor 4 becoming loose, displaced, or damaged due to vibration or water flow impact during the operation of the water dispenser 1, ensuring the long-term reliability of the temperature sensor 4 and improving the stability of the water dispenser 1.

[0043] like Figure 3 , Figure 4As shown in a specific embodiment of this application, the water circuit board body 31 includes a first water circuit board 311 and a second water circuit board 313. The first water circuit board 311 and the second water circuit board 313 are fixedly connected. The first mounting pipe 312 is disposed on the first water circuit board 311, and the second water circuit board 313 is provided with a pressure rod 314. The temperature sensor 4 includes a temperature probe 41 and a first mounting part 42 connected to each other. The temperature probe 41 passes through the first mounting pipe 312 and is located in the medium cavity 23. The pressure rod 314 presses against the first mounting part 42.

[0044] The first water channel plate 311 and the second water channel plate 313 are two plate-shaped components that are fixedly connected to each other, together forming a complete water channel plate assembly 3. The first water channel plate 311 and the second water channel plate 313 can be specifically fixed by screws. The pressure rod 314 is a rod-shaped structure set on the second water channel plate 313. When the first water channel plate 311 and the second water channel plate 313 are assembled and fixed, the pressure rod 314 can precisely abut against the first mounting part 42. The temperature probe 41 is the part of the temperature sensor 4 that actually senses the temperature and is the core function of the sensor. It is usually made of a metal probe rod encapsulating a thermistor element. The first mounting part 42 is a structural part on the temperature sensor 4 specifically used for installation and fixation. It is usually a flange, platform, or cylinder with a sealing groove. The first mounting part 42 is used to press-fit with the first mounting tube 312 to fix the temperature probe 41 and seal the tank assembly 2.

[0045] In the structure provided in this specific embodiment, by splitting the water circuit board body 31 into a first water circuit board 311 and a second water circuit board 313, after the temperature sensor 4 is inserted into the first water circuit board 311, the pressure rod 314 of the second water circuit board 313 can further press against the first mounting part 42, making the assembly of the temperature sensor 4 and the first mounting tube 312 more compact, improving the sealing performance at the connection between the temperature sensor 4 and the first mounting tube 312, thereby reducing the probability of the temperature sensor 4 loosening when the pressure inside the tank assembly 2 is high, and providing a guarantee for the airtightness of the tank assembly 2.

[0046] See Figures 2-4 In one specific embodiment of this application, the tank assembly 2 includes a sealing cap 22 and a hot tank 21 with an opening 211 at the top. The sealing cap 22 seals the opening 211 to form a medium cavity 23. The sealing cap 22 has a sealing hole 221. The first mounting tube 312 is inserted into the sealing hole 221, and the first mounting tube 312 is interference-fitted with the sealing cap 22 on the periphery of the sealing hole 221.

[0047] The sealing cap 22 is a cover-like part used to close the opening 211 at the top of the hot water tank 21. While serving as a seal for the medium cavity 23, the sealing cap 22 also acts as a mounting platform for numerous accessories such as the water circuit board assembly 3, heater, and sensors. The hot water tank 21 refers to the tank in this water dispenser 1 used to store and heat water; it typically has a built-in heating element to heat the medium within the medium cavity 23. The sealing hole 221 is a hole on the sealing cap 22 for the first mounting tube 312, its size being slightly smaller than the outer diameter of the first mounting tube 312 to achieve an interference fit.

[0048] In the structure provided in this specific embodiment, the physical properties of the interference fit generate a continuous and uniform radial pressure between the first mounting tube 312 and the sealing hole 221 of the sealing cover 22, forming a tight sealing barrier. This effectively prevents water in the hot tank 21 from leaking out from the gap between the first mounting tube 312 and the sealing cover 22 under pressure. Simultaneously, the interference fit not only provides a seal but also a robust mechanical connection, firmly fixing the temperature sensor 4 to a specific area within the medium cavity 23 via the first mounting tube 312. This enhances the mechanical strength and vibration and water flow impact resistance of the temperature sensor 4, reducing the probability of the temperature sensor 4 loosening, shifting, or being damaged due to vibration or water flow impact during the operation of the water dispenser 1. This ensures the long-term reliability of the temperature sensor 4 and improves the stability of the water dispenser 1.

[0049] See Figure 2 , Figure 5 , Figure 6 In one specific embodiment of this application, the water circuit board assembly 3 further includes a first flow sensor 51. The water circuit system includes a medium output water circuit 61, which connects the medium cavity 23 and the heat exchanger 71. The medium in the medium output water circuit 61 flows from the medium cavity 23 to the heat exchanger 71, and the first flow sensor 51 is disposed in the medium output water circuit 61.

[0050] The water system includes a return water path 62, which connects the medium cavity 23 and the heat exchanger 71. In the return water path 62, the medium flows from the heat exchanger 71 to the medium cavity 23.

[0051] The first flow sensor 51 is a device used to measure the velocity or volume of water flow, and it converts fluid flow information into an electrical signal output to the flow detection circuit in the circuit board 8. The medium output water path 61 is a channel that guides water from the medium cavity 23 to the heat exchanger 71, with the water flow direction from the medium cavity 23 to the heat exchanger 71. The return water path 62 is used to guide the medium that has flowed out of the medium cavity 23 and been processed by the heat exchanger 71 back into the medium cavity 23, with the water flow direction opposite to that of the medium output water path 61, flowing from the heat exchanger 71 back to the medium cavity 23.

[0052] Heat exchanger 71 is a component independent of water circuit board assembly 3, specifically designed for efficient heat transfer between two fluids. It contains two closely spaced but physically isolated flow channels that exchange heat through a large-area heat-conducting wall within the heat exchanger 71. Furthermore, the water flow directions in the two channels can be opposite, thereby improving the efficiency and uniformity of the heat exchange process.

[0053] In the structure provided in this specific embodiment, a first flow sensor 51 is provided in the medium output water path 61, which can monitor the flow rate of the medium input from the medium cavity 23 into the heat exchanger 71, and can know the flow rate of the medium flowing through the heat exchanger 71, thereby enabling accurate monitoring of the working status of the water dispenser 1, thereby improving the stability of the water dispenser 1 and the user experience.

[0054] See Figure 2 , Figure 5 , Figure 6 In one specific embodiment of this application, the water circuit board assembly 3 further includes a second flow sensor 52. The water circuit system includes a water input channel 63, which connects a water source and a heat exchanger 71. Water flows from the water source to the heat exchanger 71 in the water input channel 63, and the second flow sensor 52 is disposed in the water input channel 63.

[0055] The water system includes a water output channel 64, which is used to output water heated by the heat exchanger 71. The water in the water output channel 64 flows from the heat exchanger 71 to the outside.

[0056] In the structure provided in this specific embodiment, a second flow sensor 52 is provided in the water input channel 63, which can monitor the flow rate of the water body that is heated by heat exchanger 71 and medium. It can know the flow rate of the water body flowing through heat exchanger 71, thereby enabling accurate monitoring of the working status of water dispenser 1, thereby improving the stability of water dispenser 1 and user experience.

[0057] Specifically, the first flow sensor 51 and the second flow sensor 52 can be at least one of common flow meters such as impeller flow sensors, Hall effect flow sensors, vortex flow meters, and thermal flow meters. The connection method between the first flow sensor 51, the second flow sensor 52 and the flow detection circuit on the circuit board 8 is similar to that of the temperature sensor 4, and will not be described in detail here.

[0058] See Figure 2 , Figure 5 , Figure 6 In one specific embodiment of this application, the water circuit board body 31 further includes a first mounting interface 315, which is connected to the medium output water circuit 61, and the first flow sensor 51 is detachably plugged into and fixed to the first mounting interface 315.

[0059] Optionally, the water circuit board body 31 further includes a second mounting interface 316, which is connected to the water input water circuit 63, and the second flow sensor 52 is detachably plugged into and fixed to the second mounting interface 316.

[0060] The first mounting interface 315 is a standardized, structured interface specifically designed for mounting the first flow sensor 51 on the main body 31 of the water circuit board. It is not a simple hole, but a composite functional component integrating a water flow channel, a sealing groove, and a mechanical locking structure. The second mounting interface 316 is similarly designed. The flow sensor and the mounting interface can be detachably fixed using snap-fit, threaded fastening, or clamping with a pressure rod 314. Threaded fastening can include providing an external thread on the flow sensor and an internal thread on the mounting interface, with the two screwed together; or using additional threaded components to tighten them together.

[0061] In the structure provided in this specific embodiment, by setting a first installation interface 315 and a second installation interface 316, the first flow sensor 51 and the second flow sensor 52 can be inserted into the corresponding installation interfaces to detect the flow rate. When the flow sensor malfunctions or needs calibration, maintenance personnel do not need to disassemble the water circuit board body 31 or cut the water pipe; they only need to pull the flow sensor out of the installation interface. This enables quick and independent replacement of the flow sensor, greatly reducing downtime of the water dispenser 1 during maintenance, improving the production efficiency of the water dispenser 1, and reducing the installation difficulty and error probability of the flow sensor.

[0062] See Figure 1 , Figure 6The water dispenser 1 may also be equipped with a wastewater discharge path 66, a water inlet path 67, and a water outlet path 68. The wastewater discharge path 66 is connected downstream of the heating tank 21 and is used to discharge waste, wastewater, and other impurities from the bottom of the heating tank 21. The water inlet path 67 is connected upstream of the water input path 63 and the heating tank 21, allowing external water to be input into the heating tank 21 or into the water input path 63. The water outlet path 68 is connected downstream of the water output path 64 and the water inlet path 67, allowing heated water from the water output path 64 or unheated water from the water inlet path 67 to meet different water usage needs.

[0063] See Figure 5 , Figure 6 In one specific embodiment of this application, the water circuit board assembly 3 further includes a pressure sensor 53. The tank assembly 2 is provided with an insertion hole communicating with the medium cavity 23. The detection end of the pressure sensor 53 is detachably inserted into the medium cavity 23 through the insertion hole, and the pressure sensor 53 blocks the insertion hole. The water circuit board body 31 is provided with a clearance hole 317 to expose the pressure sensor 53.

[0064] The pressure sensor 53 is a device used to measure the pressure of liquids or gases, converting physical pressure signals into electrical signals. In this design, it is used to monitor the pressure of the medium inside the tank. The sensing end is the part of the pressure sensor 53 that directly senses the pressure, typically a metal head with a sensing diaphragm. The insertion hole is a specially designed hole on the tank assembly 2 for mounting the pressure sensor 53, its size and shape matching the sensing end and sealing part of the pressure sensor 53. The clearance hole 317 is a hole on the water circuit board body 31 large enough to accommodate the pressure sensor 53, its size slightly larger than the size of the pressure sensor 53. The purpose of the clearance hole 317 is not to seal, but to allow the main body of the pressure sensor 53 to pass through the water circuit board, while exposing the gauge or wiring terminals of the pressure sensor 53 for easy wiring and observation.

[0065] In the structure provided in this specific embodiment, the detection end of the pressure sensor 53 extends directly into the medium cavity 23 through the insertion hole, creating a direct, practical, and easy-to-maintain installation method for the pressure sensor 53. When the pressure sensor 53 malfunctions, it can be removed from the insertion hole and replaced through the clearance hole 317 without emptying the tank or disassembling complex pipelines, greatly reducing the downtime of the water dispenser 1 during maintenance. Simultaneously, after being inserted into the medium cavity 23, the pressure sensor 53 itself assumes the function of sealing the insertion hole to seal the medium cavity 23, eliminating the need for additional sealing structures, simplifying the structure of the water dispenser 1, and improving structural stability. Furthermore, the clearance hole 317 of the water circuit board body 31 also provides support for the pressure sensor 53, reducing vibrations caused by water flow impact and pressure changes, lowering the probability of the pressure sensor 53 loosening or being damaged, and improving the stability of the water dispenser 1.

[0066] like Figure 5 , Figure 6 As shown in a specific embodiment of this application, the water dispenser 1 further includes a pressure control circuit 81 and a normally closed pressure relief valve 72. The water circuit board body 31 is provided with an exhaust passage 65 that connects to the medium cavity 23. The pressure relief valve 72 is connected to the exhaust passage 65. The pressure control circuit 81 connects the pressure relief valve 72 and the pressure sensor 53. The pressure control circuit 81 is used to control the pressure relief valve 72 to connect to the exhaust passage 65 when the pressure sensor 53 detects that the pressure exceeds the upper limit value.

[0067] The pressure control circuit 81 is an electronic control unit located on the circuit board 8. It receives electrical signals from the pressure sensor 53, compares them with an internally preset upper limit value, and outputs control commands to the pressure relief valve 72 based on the comparison result. The pressure relief valve 72 is a valve whose opening and closing are controlled by electrical signals. When no control command is received, the pressure relief valve 72 is normally closed, keeping the exhaust passage 65 sealed. When a control command is received, the pressure relief valve 72 opens to release pressure. The exhaust passage 65 is a specially designed channel inside the water circuit board body 31, with one end connected to the medium cavity 23 and the other end leading to the outside of the equipment or a safe area. Its purpose is to allow gaseous or liquid media to be safely discharged through the pressure relief valve 72 when it is open.

[0068] The upper limit is a pressure threshold pre-set in the pressure control circuit 81. When the actual pressure detected by the pressure sensor 53 exceeds this value, the control circuit determines that the system is overpressured and performs a pressure relief action. For example, for a tank with a rated operating pressure of 0.8 MPa, its upper limit may be set to 1.0 MPa. When the pressure reaches 1.0 MPa, the pressure control circuit 81 will immediately initiate pressure relief, regardless of whether it is due to abnormal heating, water pump failure, or circuit blockage.

[0069] In the structure provided in this specific embodiment, the pressure is monitored in real time by the pressure sensor 53 and judged by the pressure control circuit 81. When the pressure reaches an upper limit value, the pressure relief valve 72 is actively triggered to release pressure through the exhaust passage 65. This constructs an automated and automatically recoverable overpressure protection system for the water dispenser 1 based on real-time pressure monitoring, which effectively reduces the damage or safety accidents to the water dispenser 1 caused by excessive pressure in the medium cavity 23, and significantly improves the intelligence, safety and service life of the water dispenser 1.

[0070] In one specific embodiment of this application, the water dispenser 1 further includes an alarm circuit 83 and an airtightness detection circuit 82, wherein the airtightness detection circuit 82 is connected to the alarm circuit 83 and the pressure sensor 53. The airtightness detection circuit 82 is used to send an alarm signal to the alarm circuit 83 when the pressure sensor 53 detects that the pressure is too low and / or an abnormal change.

[0071] Both the alarm circuit 83 and the airtightness detection circuit 82 can be mounted on the circuit board 8. The alarm circuit 83 is an electronic unit that issues a warning to the user via sound, light, or electrical signals when the system detects an anomaly. The airtightness detection circuit 82 is a dedicated logic circuit that continuously analyzes data from the pressure sensor 53 to determine whether there is a leak in the medium cavity 23.

[0072] For example, when the water dispenser 1 is in a stopped state, that is, when the medium cavity 23 is not connected to other pipelines and is not heated, the airtightness detection circuit 82 can determine that the airtightness of the medium cavity 23 is abnormal when the pressure sensor 53 detects a continuous drop in pressure in the medium cavity 23. For example, if the water dispenser 1 is left on standby overnight and the pressure sensor 53 detects that the pressure has dropped from 0.6 MPa to 0.3 MPa, the airtightness detection circuit 82 will determine that the pressure is "too low" and that there is a leak.

[0073] For example, when the water dispenser 1 is working normally, that is, when there is medium entering or exiting the medium cavity 23 or when the medium cavity 23 is being heated, when the pressure sensor 53 detects that the air pressure in the medium cavity 23 is always maintained at normal pressure, the air tightness detection circuit 82 can determine that the air tightness of the medium cavity 23 is abnormal.

[0074] In the structure provided in this specific embodiment, the pressure sensor 53 can detect abnormalities in the airtightness of the medium cavity 23 at the macroscopic level, such as water leakage, performance degradation of the water dispenser 1, or noticeable noise, and issue an alarm in advance. This improves the self-testing system of the water dispenser 1 and enhances its stability. Furthermore, the application value of the pressure sensor 53 is expanded, enabling it to work not only with the pressure control circuit 81 for overpressure protection but also with the airtightness detection circuit 82 for airtightness detection.

[0075] In this application, the terms "embodiment" and "implementation" mean that a specific feature, part, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various places in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, parts, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A water dispenser, characterized in that, include: The tank assembly (2) is provided with a medium cavity (23); The water circuit board assembly (3) includes a water circuit board body (31) and a temperature sensor (4). The water circuit board body (31) is provided with a water circuit system that connects to the medium cavity (23). The temperature sensor (4) is detachably inserted into the water circuit board body (31) and extends into the medium cavity (23). The water circuit board assembly (3) also includes a first mounting tube (312). One end of the first mounting tube (312) is connected to the water circuit board body (31) and the other end extends into the medium cavity (23). The temperature sensor (4) is inserted and fixed in the first mounting tube (312). The water circuit board body (31) includes a first water circuit board (311) and a second water circuit board (313). The first water circuit board (311) and the second water circuit board (313) are fixedly connected. The first mounting tube (312) is disposed on the first water circuit board (311). The second water circuit board (313) is provided with a pressure rod (314). The temperature sensor (4) includes a temperature probe (41) and a first mounting part (42) connected to each other. The temperature probe (41) passes through the first mounting tube (312) and is located in the medium cavity (23). The pressure rod (314) presses against the first mounting part (42).

2. The water dispenser according to claim 1, characterized in that, The tank assembly (2) includes a sealing cap (22) and a hot tank (21) with an opening (211) on the top. The sealing cap (22) seals the opening (211) to form a medium cavity (23). The sealing cap (22) has a sealing hole (221). The first mounting tube (312) is inserted into the sealing hole (221), and the first mounting tube (312) is interference-fitted with the sealing cap (22) on the periphery of the sealing hole (221).

3. The water dispenser according to claim 1, characterized in that, The water circuit board assembly (3) also includes a first flow sensor (51); The water system includes a medium output water path (61), which connects the medium cavity (23) and the heat exchanger (71). The medium in the medium output water path (61) flows from the medium cavity (23) to the heat exchanger (71). The water system also includes a return water path (62), which connects the medium cavity (23) and the heat exchanger (71). The medium in the return water path (62) flows from the heat exchanger (71) to the medium cavity (23). The first flow sensor (51) is located in the medium output water path (61).

4. The water dispenser according to claim 3, characterized in that, The water circuit board body (31) also includes a first installation interface (315), which is connected to the medium output water circuit (61), and the first flow sensor (51) is detachably plugged into and fixed to the first installation interface (315).

5. The water dispenser according to claim 1, characterized in that, The water circuit board assembly (3) also includes a second flow sensor (52); The water system includes a water input channel (63), which connects a water source and a heat exchanger (71). Water flows from the water source to the heat exchanger (71) in the water input channel (63), and the second flow sensor (52) is installed in the water input channel (63). The water system also includes a water output channel (64), which outputs water heated by the heat exchanger (71). Water flows from the heat exchanger (71) to the outside in the water output channel (64).

6. The water dispenser according to claim 5, characterized in that, The water circuit board body (31) also includes a second installation interface (316), which is connected to the water input water circuit (63). The second flow sensor (52) is detachably plugged into and fixed to the second installation interface (316).

7. The water dispenser according to claim 1, characterized in that, The water circuit board assembly (3) also includes a pressure sensor (53). The tank assembly (2) is provided with a socket that communicates with the medium cavity (23). The detection end of the pressure sensor (53) is detachably inserted into the medium cavity (23) through the socket, and the pressure sensor (53) blocks the socket. The water circuit board body (31) is provided with a clearance hole (317) to expose the pressure sensor (53).

8. The water dispenser according to claim 7, characterized in that, The water dispenser (1) also includes a pressure control circuit (81) and a normally closed pressure relief valve (72). The water circuit board body (31) is provided with an exhaust passage (65) that connects to the medium cavity (23). The pressure relief valve (72) is connected to the exhaust passage (65). The pressure control circuit (81) connects the pressure relief valve (72) and the pressure sensor (53). The pressure control circuit (81) is used to control the pressure relief valve (72) to connect to the exhaust passage (65) when the pressure sensor (53) detects that the pressure exceeds the upper limit value.

9. The water dispenser according to claim 8, characterized in that, The water dispenser (1) also includes an alarm circuit (83) and an airtightness detection circuit (82), wherein the airtightness detection circuit (82) is connected to the alarm circuit (83) and the pressure sensor (53). The airtightness detection circuit (82) is used to send an alarm signal to the alarm circuit (83) when the pressure sensor (53) detects that the pressure is too low and / or abnormal changes.

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