Waterway system, instant heating type drinking water equipment and control method of instant heating type drinking water equipment

Abstract

The invention relates to the technical field of drinking water, and discloses a waterway system which comprises a machine base and a water tank detachably connected to the machine base. The water outlet path is connected to the machine base, and the water outlet path is sequentially connected with a water suction pump, a heating device and a water outlet nozzle in series in the liquid flowing direction; the input end of the water pump is communicated with the water tank; water in the water tank can flow through the heating device to the water outlet nozzle for external use under the negative pressure action of the water pump; one end of the water inlet pipeline communicates with the output end of the water suction pump, the other end of the water inlet pipeline communicates with the input end of the heating device, and a detection device used for monitoring whether water passes through the water inlet pipeline is arranged on a circulation path of the water inlet pipeline; the heating device starts or stops heating according to the detection result. Starting and stopping of the heating device are controlled by detecting whether water flows through the water inlet pipeline or not through the rear detection device, the overall structure of the water dispenser is simplified, the production cost and the maintenance difficulty are reduced, the water tank is more convenient to clean and maintain, and the size of the water tank and the water storage capacity are further increased.

Description

Technical Field

[0001] The present invention relates to the technical field of drinking water, and in particular to a waterway system, instant hot drinking water equipment and a control method thereof. Background Art

[0002] The water tank of an existing instant portable water dispenser is usually detachable and cannot be automatically refilled, and is often in a waterless state. In order to prevent the occurrence of the situation where "the water dispenser faucet is turned on when there is no water in the water tank, causing the heating device to continue to burn dry", the industry usually installs a liquid level detection device (such as a reed switch or a capacitive liquid level sensor) on the water tank of the instant portable water dispenser. The liquid level detection device determines whether there is water in the water tank to prevent the heating device from burning dry.

[0003] However, the current technical solution of "setting a liquid level detection device on the water tank of the instant portable water dispenser to detect the liquid level and prevent dry burning" has the following technical problems in actual application: ① When a reed switch is used as the liquid level detection device, a float needs to be set in the water tank, which has high requirements for the installation space, and the float set inside the water tank is not conducive to the cleaning of the water tank. In addition, the float is easily formed into a water film when it is immersed in water for a long time. The viscosity generated by the water film will cause the float to not rise or fall with the liquid level after the water level in the water tank changes, thereby causing detection deviation and even causing the detection function to fail, and there is a risk of dry burning; ② The use of a capacitive liquid level sensor as a liquid level detection device solves some of the problems existing in the reed switch, but whether it is a reed switch or a capacitive liquid level sensor, the liquid level detection device needs to be connected to the water tank as a whole, which means that when the water tank is disassembled, the liquid level detection device also needs to be disassembled synchronously, which increases the complexity of the structure and requires a detachable on-off power connection design, thereby increasing the risk of damage and production costs. Summary of the invention

[0004] The present invention aims to provide a water system, instant hot water drinking equipment and a control method thereof to solve the above technical problems.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] In the first aspect, the present invention provides a water system, comprising: a machine base, a water tank detachably connected to the machine base; a water outlet waterway connected to the machine base, and the water outlet waterway is sequentially connected in series with a water pump, a heating device and a water outlet nozzle along the liquid flow direction; the input end of the water pump is connected to the water tank, and the water in the water tank can flow through the heating device to the water outlet nozzle for external use under the negative pressure of the water pump; a water inlet pipeline, one end of which is connected to the output end of the water pump, and the other end is connected to the input end of the heating device, and a detection device is arranged on the flow path of the water inlet pipeline for monitoring whether water is flowing through the water inlet pipeline; the heating device starts or stops heating according to the detection result of the detection device.

[0007] As an optional solution for the water system provided by the present invention, the detection device is a pipeline liquid level sensor, which includes a water pipe connected in series with the water inlet pipeline and a photoelectric sensor connected to the water pipe.

[0008] As an optional solution of the water channel system provided by the present invention, it also includes a debubble component, which is arranged upstream of the flow path of the heating device and is used to allow water to pass through and to split and break bubbles in the water flow.

[0009] As an optional solution for the water system provided by the present invention, the debubble assembly includes a bubble breaking channel and a bubble separator; the bubble breaking channel is connected in series to the water outlet waterway and is located upstream of the heating device, and the bubble separator includes a main board body positioned in the bubble breaking channel, and the main board body is provided with a plurality of bubble cutting holes for liquid circulation.

[0010] As an optional solution of the water channel system provided by the present invention, the main board body is made of piezoelectric ceramics, and the bubble separator also includes a power module connected to the main board body.

[0011] As an optional solution of the water system provided by the present invention, the debubble assembly further includes a bubble breaking tube, which is positioned in the bubble breaking channel and downstream of the bubble divider, and the bubble breaking tube extends spirally along the fluid flow direction.

[0012] As an optional solution of the water system provided by the present invention, a positioning rod is provided in the bubble breaking channel, one end of the bubble breaking tube is connected to the positioning rod, the bubble breaking tube is elastic and the axis line of the spiral extension of the bubble breaking tube deviates from the axis line of the bubble breaking channel.

[0013] As an optional solution of the water system provided by the present invention, the water inlet pipeline is formed with an exhaust pipe section extending longitudinally, and the ventilation pipe extends longitudinally and is connected in series with the exhaust pipe section.

[0014] As an optional solution of the water system provided by the present invention, the signal output end of the pipeline liquid level sensor is connected to a filter circuit.

[0015] In a second aspect, the present invention further provides an instant hot water drinking device, comprising a controller and the water system as described above.

[0016] In the second aspect, the present invention also provides a drinking water equipment control method, which is applied to the instant drinking water equipment as mentioned above, and at least includes the following steps: normal power-on, triggering the hot water switch on the machine base, and the control panel accepting the hot water command; the control panel controls the water pump to start, and the water pump generates negative pressure to draw water from the water tank to the heating device; the pipeline liquid level sensor detects the liquid level in the water inlet pipe to determine whether there is water; if the pipeline liquid level sensor detects that there is no water in the water inlet pipe, the pipeline liquid level sensor outputs a high voltage signal to the controller, and the controller controls the heating device and the water pump to stop, and alarms to indicate water shortage, reminding the user to add water to the water tank; if the pipeline liquid level sensor detects that there is water in the water inlet pipe, the pipeline liquid level sensor outputs a low voltage signal to the controller, and the controller controls the heating device to start, and the water in the water tank is heated by the heating device and flows out through the water outlet. After a preset time, the water pump and the heating device stop working.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Abandoning the technical solution of "setting a detection device on the water tank and controlling the heating device by detecting the liquid level in the water tank", the detection device is placed between the water pump and the heating device, and the start and stop of the heating device are controlled by detecting whether the water inlet pipe is flowing. This is conducive to simplifying the overall structure of the water dispenser and reducing production costs and maintenance difficulties, making the cleaning and maintenance of the water tank more convenient, and helping to further increase the volume of the water tank and the water storage capacity;

[0019] 2. The detection device uses a pipeline liquid level sensor, which is low in cost, small in size, and has its own pipeline that can be connected in series with the water supply system, making it easy to install and disassemble;

[0020] 3. A debubble assembly is provided upstream of the flow path of the heating device. The debubble assembly includes a bubble divider and a bubble breaking tube. A segmented debubble design is adopted to reduce the amount of bubbles in the water flow passing through the water pipe during the water on and off transition of the water system, which helps to reduce the interference of bubbles on the photoelectric sensor of the pipeline liquid level sensor, improve the reliability of the pipeline liquid level sensor in detecting whether water is flowing through the heating device, ensure the normal operation of the heating device, avoid dry burning or no heating of the heating device, reduce energy consumption, extend the service life of the heating device, and ensure user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the water system provided in the embodiment of the present application. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the water system provided in the embodiment of the present application. Figure 2 ;

[0024] Figure 3 It is a structural schematic diagram of the bubble divider provided in an embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of the structure of the bubble breaking tube provided in the embodiment of the present application.

[0026] In the figure:

[0027] 1. Machine base; 2. Water tank; 3. Water pump; 4. Heating device; 5. Water outlet; 6. Water guide seat; 7. Water inlet pipe; 8. Pipeline liquid level sensor; 81. Water pipe; 82. Photoelectric sensor; 9. Debubble assembly; 91. Bubble breaking channel; 92. Bubble divider; 921. Main board; 922. Bubble cutting hole; 93. Bubble breaking tube; 94. Positioning rod. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] refer to Figure 1 to Figure 4 , a water system, which is the same as the water system of the existing instant portable water dispenser, and includes a base 1 and a water tank 2, and the water tank 2 is detachably connected to the base 1. In addition, the base 1 is connected with a water outlet waterway, and the water outlet waterway is connected in series with a water pump 3, a heating device 4 and a water outlet nozzle 5 in the direction of liquid flow. The base 1 is provided with a water guide seat 6 for detachably connecting to the water tank 2, and the input end of the water pump 3 is connected to the water guide seat 6 and connected to the inside of the water tank 2 through the water guide seat 6. When working, the water pump 3 can be started to generate negative pressure, and the water in the water tank 2 passes through the water guide seat 6, the water pump 3, and the heating device 4 in turn under the negative pressure of the water pump 3, and is extremely quickly heated by the heating device 4 to the water outlet nozzle 5 for external use. When the water tank 2 is out of water, the water tank 2 can be removed from the base 1 for water replenishment.

[0033] Compared with the water system of the existing instant portable water dispenser, the improvement of the present application is that it also includes a water inlet pipe 7 and a detection device. One end of the water inlet pipe 7 is connected to the output end of the water pump 3, and the other end is connected to the input end of the heating device 4. The detection device is arranged on the flow path of the water inlet pipe 7 to monitor whether water flows through the water inlet pipe 7. When working, the heating device 4 can start or stop heating according to the detection result of the detection device. When the water pump 3 is started, if the detection device detects that water flows through the water pipe 81, the heating device 4 heats normally; if the detection device detects that there is no water flowing through the water pipe 81, the heating device 4 stops heating to avoid dry burning.

[0034] It should be noted that the concepts of “upstream” and “downstream” mentioned in this specific embodiment are based on the direction of liquid flow in the water system and are intended to facilitate description of the spatial position of components in the water system.

[0035] This application abandons the technical solution of "the original instant portable water dispenser is provided with a detection device on the water tank 2, and the heating device 4 is controlled by detecting the liquid level in the water tank 2". Through the above technical solution, the detection device is placed in the back, that is, the water inlet pipeline 7 and the detection device are provided between the heating device 4 and the water pump 3, and the start and stop of the heating device 4 are controlled by the detection device to detect whether the water inlet pipeline 7 is flowing, thereby avoiding the installation of a complex and problematic liquid level detection device on the water tank 2. 1. It is conducive to simplifying the overall structure of the water dispenser and reducing the production cost and maintenance difficulty. Since the water tank 2 does not need to be additionally provided with a detection device (such as a reed switch or a capacitive liquid level sensor), the cleaning and maintenance of the water tank 2 are more convenient, and the user does not need to worry about damaging the detection device or affecting its normal operation during cleaning and water collection; 2. No additional detection device is provided on the water tank 2, so that a certain space can be freed up inside the base 1 and / or the water tank 2, which is conducive to further increasing the volume of the water tank 2 and the water storage capacity.

[0036] There are various implementation methods for the detection device to detect whether water is flowing through the water inlet pipe 7. For example, the detection device can be other detection forms such as a flow sensor. However, considering the cost and miniaturization of the water dispenser, in this embodiment, the structure and connection method of the detection device are preferably: the detection device is a pipeline liquid level sensor 8, which includes a water pipe 81 connected in series with the water inlet pipe 7 and a photoelectric sensor 82 connected to the water pipe 81. When working, the water pipe 81 is connected in series to the water inlet pipe 7 as a part of the sensor, and the photoelectric sensor 82 is connected to the water pipe 81. The photoelectric sensor 82 includes a light-emitting element and a receiving element. When water flows through the water pipe 81, it will change the propagation path of light in the water pipe 81, so that it will be sensed by the receiving element, and a voltage signal consistent with the water level condition in the water pipe 81 is output through the signal end of the pipeline liquid level sensor 8. The voltage signal is received by the single-chip microcomputer on the drinking water equipment, and the heating device 4 is started or stopped according to the voltage signal. Specifically, when there is water in the water pipe 81, the pipeline liquid level sensor 8 outputs a low voltage, and when there is no water in the water pipe 81, the pipeline liquid level sensor 8 outputs a high voltage.

[0037] Compared with other detection device implementations, the pipeline liquid level sensor 8 can be directly installed on the water inlet pipeline 7, which is convenient to install and disassemble, has a small size and low cost.

[0038] However, during the production test, the inventor discovered a problem: during the transition process of water supply and water cutoff in the water system, due to various factors such as the change in water flow velocity, the roughness of the inner wall of the pipe, the difference in water quality, and the working mode of the water pump 3, many bubbles will be generated in the connecting pipe. These bubbles may adhere to the inner wall of the pipe or enter the water pipe 81 with the water flow, thereby affecting the normal operation of the photoelectric sensor 82. Specifically, the bubbles will change the propagation path of the light in the water pipe 81, causing the light to be refracted or scattered, resulting in changes in the light signal received by the photoelectric sensor 82. When the number of bubbles is large or unevenly distributed, the photoelectric sensor 82 will output a clutter signal, making the liquid level detection inaccurate. Due to the interference of bubbles, the pipeline liquid level sensor 8 may output a high voltage in the presence of water, causing the heating device 4 to not work, or output a low voltage in the absence of water, causing the heating device 4 to dry burn.

[0039] In view of the technical problem that bubbles are generated in the transition process of water supply and water cutoff in the above-mentioned water system, which affects the detection result of the pipeline liquid level sensor 8, another improvement of the present application is that the water system also includes a debubble component 9, which is arranged upstream of the flow path of the heating device 4, and is used for water flow to pass through and to split and break bubbles in the water flow. During operation, the water flow upstream of the flow path of the heating device 4 can flow through the debubble component 9 to the heating device 4, and the bubbles in the water flow are split and broken by the debubble component 9, thereby reducing the amount of bubbles in the water flow flowing through the water pipe 81 during the transition process of water supply and water cutoff in the water system, helping to reduce the interference of bubbles on the photoelectric sensor 82 of the pipeline liquid level sensor 8, and improving the reliability of the pipeline liquid level sensor 8 in detecting whether the heating device 4 is flowing with water, ensuring the normal operation of the heating device 4, avoiding dry burning or no heating of the heating device 4, reducing energy consumption, extending the service life of the heating device 4, and ensuring user experience.

[0040] Specifically, the debubble assembly 9 includes a bubble breaking channel 91 and a bubble divider 92; the bubble breaking channel 91 is connected in series to the water outlet waterway and is located upstream of the heating device 4, and the bubble divider 92 includes a main body 921 positioned in the bubble breaking channel 91, and a plurality of bubble cutting holes 922 are provided on the main body 921 for liquid circulation. When in use, the water flows through the bubble breaking channel 91 and impacts the main body 921 in the bubble breaking channel 91, and flows through the main body 921 through the bubble cutting holes 922. In the process of flowing through the main body 921, due to the obstruction of the bubble cutting holes 922 and the effect of changing the direction of the water flow, the bubbles carried in the fluid will be subjected to shear force and changing pressure. This dynamic effect can divide a single large bubble into multiple small bubbles, or even directly cut the bubble, thereby reducing the total amount of bubbles and the average bubble volume in the water flow that subsequently flows through the water pipe 81, reducing the interference with the light propagation path of the photoelectric sensor 82 of the pipeline liquid sensor, and making the output signal of the pipeline liquid sensor stable and reliable.

[0041] In this embodiment, the main board body 921 is formed and connected to the bubble breaking channel 91 in a variety of ways, for example: the main board body 921 can be formed in the bubble breaking channel 91 by injection molding; or the bubble breaking channel 91 adopts a segmented design, with at least two sections of tube bodies, the two sections of tube bodies are detachably connected by plugging, threading, snap-fitting and other methods in conjunction with a sealing structure, and the main board body 921 is positioned and connected to the segmented connection of the two sections of the tube body of the bubble breaking channel 91 through a structure such as a card slot; for another example, the inner wall of the bubble breaking channel 91 extends radially to form a positioning groove body, and the main board body 921 can be directly inserted and snap-fitted into the positioning groove body. In summary, the remaining implementation structures are not repeated here.

[0042] Considering that the bubble divider 92 is prone to form a water film on the surface of the main body 921 after long-term use, reducing the ability of the cut bubble holes 922 to divide bubbles, and the cut bubble holes 922 of the main board may be blocked by impurities or scale deposition, affecting the water flow rate. In this embodiment, the main body 921 is preferably made of piezoelectric ceramics, and the bubble divider 92 also includes a power module, which is connected to the main body 921. Since piezoelectric ceramics are a material that can convert electrical energy into mechanical energy, the main board body 921 is made of piezoelectric ceramics and when powered on, the main board body 921 itself will generate tiny high-frequency vibrations. These vibrations help to break the water film that may be formed on the surface of the main board body 921 and maintain the segmentation ability of the cut bubble holes 922. At the same time, the vibration of the main board body 921 can achieve self-cleaning, avoiding the cut bubble holes 922 from being blocked by impurities and scale, and keeping them unobstructed. In addition, when water flows through the cut bubble holes 922, due to the vibration of the main board body 921, the bubbles flowing through the cut bubble holes 922 will be subject to additional shear force and pressure changes, which will help to segment large bubbles into smaller bubbles and increase the probability of directly cutting bubbles.

[0043] In addition, in order to further reduce the influence of bubbles on the pipeline liquid level sensor 8, in this embodiment, the debubble assembly 9 also includes a bubble breaking tube 93, which is positioned in the bubble breaking channel 91 and downstream of the bubble divider 92, and the bubble breaking tube 93 extends in a spiral along the flow direction of the fluid. By arranging the bubble breaking tube 93 downstream of the bubble divider 92, the bubble breaking tube 93 can be subjected to the impact of the water flow and squeeze and shear the bubbles in the water flow, and the bubbles can be further divided or directly dissolved in the water. The design of the bubble breaking tube 93 extending in a spiral along the flow direction of the fluid can increase the contact area and contact time between the water flow and the pipe wall, thereby more effectively breaking the bubbles in the water flow. In addition, the spirally extended bubble breaking tube 93 can also guide the water flow to flow in a spiral, optimize the dynamic characteristics of the water flow, change the flow direction and speed of the water flow, reduce the turbulence and eddy current in the water flow, and make the water flow more stable.

[0044] It should be noted that the existence of the bubble breaking tube 93 shares part of the pressure of the upstream bubble divider 92 in dividing and breaking the water bubbles, so that the total area of ​​the bubble cutting holes 922 of the main body 921 can be as large as possible, which is beneficial to improving the water flow permeability of the main body 921 and ensuring the water output efficiency of the water system.

[0045] Preferably, the bubble breaking tube 93 is made of elastic material and has a certain elasticity, a positioning rod 94 is provided in the bubble breaking channel 91, one end of the bubble breaking tube 93 is connected to the positioning rod 94, and the axis of the spiral extension of the bubble breaking tube 93 deviates from the axis of the bubble breaking channel 91. Through the above technical solution, the water flow in the bubble breaking channel 91 will be hindered and guided by the spiral extension shape of the bubble breaking tube 93 to generate a spiral flow, and at the same time, because the axis of the bubble breaking tube 93 and the bubble breaking channel 91 deviate from each other, the water flow will form an eccentric vortex at the section of the bubble breaking channel 91 where the bubble breaking tube 93 is provided, and the eccentric vortex will drive the bubble breaking tube 93 to undergo random deflection and disturbance, so that the bubble breaking tube 93 can be radially agitated relative to the bubble breaking channel 91, which helps to further break the bubbles and enhance the defoaming effect.

[0046] Furthermore, in order to prevent bubbles from being retained in the water pipe 81, the water inlet pipeline 7 is formed with a longitudinally extending exhaust pipe section, and the water pipe 81 is longitudinally extended and connected in series with the exhaust pipe section. The exhaust pipe section and the water pipe 81 are longitudinally extended, which is conducive to the bubbles rising to the highest point of the water pipe 81 along with the water flow, and prevents tiny bubbles from being retained in the water pipe 81 and agglomerating to form large bubbles, which affects the detection of the pipeline liquid level sensor 8.

[0047] In addition to the above technical solutions, in this embodiment, the signal output end of the pipeline liquid level sensor 8 is also connected to a filter circuit. By setting the filter circuit, part of the clutter signal output by the pipeline liquid level sensor 8 can be filtered out to improve the accuracy and stability of the signal.

[0048] Embodiment 2

[0049] An instant hot drinking water device comprises the water system as shown in the above embodiment, and also comprises a controller, wherein the input end of the controller is connected to the pipeline liquid level sensor 8, and the output end of the controller is connected to the water pump 3 and the heating device 4.

[0050] Embodiment 3

[0051] A method for controlling a drinking water device is applied to the instant hot drinking water device as described in the second embodiment above.

[0052] It includes the following steps:

[0053] The drinking water equipment is powered on normally, the hot water switch on the base 1 is triggered, and the control panel receives the hot water command;

[0054] The control panel controls the water pump 3 to start, and the water pump 3 generates negative pressure to draw water from the water tank 2 to the heating device 4;

[0055] The pipeline liquid level sensor 8 detects the liquid level in the water inlet pipeline 7 to determine whether there is water;

[0056] If the pipeline liquid level sensor 8 detects that there is no water in the water inlet pipe 7, the pipeline liquid level sensor 8 outputs a high voltage signal to the controller, and the controller controls the heating device 4 and the water pump 3 to stop, and alarms to indicate water shortage, reminding the user to add water to the water tank 2;

[0057] If the pipeline liquid level sensor 8 detects that there is water in the water inlet pipe 7, the pipeline liquid level sensor 8 outputs a low voltage signal to the controller, and the controller controls the heating device 4 to start. The water in the water tank 2 is heated by the heating device 4 and flows out through the water outlet 5. After a preset time, the water pump 3 and the heating device 4 stop working. Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A waterway system, characterized in that: include: A machine base (1), and a water tank (2) detachably connected to the machine base (1); A water outlet waterway connected to the machine base (1), wherein the water outlet waterway includes a water pump (3), a heating device (4) and a water outlet nozzle (5) which are sequentially connected in series along the direction of fluid flow; The input end of the water pump (3) is connected to the water tank (2), and the water in the water tank (2) can flow through the heating device (4) to the water outlet (5) under the negative pressure of the water pump (3) for external use; A water inlet pipeline, one end of which is connected to the output end of the water pump (3) and the other end of which is connected to the input end of the heating device (4). A detection device is provided on the flow path of the water inlet pipeline for detecting whether water flows through the water inlet pipeline; the heating device (4) starts or stops heating according to the detection result of the detection device.

2. The waterway system according to claim 1, characterized in that: The detection device is a pipeline liquid level sensor (8), which comprises a water pipe (81) connected in series with the water inlet pipeline and a photoelectric sensor (82) connected to the water pipe (81).

3. The waterway system according to claim 2, characterized in that: It also comprises a debubble assembly (9), which is arranged upstream of the flow path of the heating device (4) and is used for allowing water to pass through and for segmenting and breaking bubbles in the water flow.

4. The waterway system according to claim 3, characterized in that: The debubble assembly (9) comprises a bubble breaking channel (91) and a bubble divider (92); the bubble breaking channel (91) is connected in series to a water outlet channel and is located upstream of the heating device (4); the bubble divider (92) comprises a main board body (921) positioned in the bubble breaking channel (91); and the main board body (921) is provided with a plurality of bubble cutting holes (922) for liquid circulation.

5. The waterway system according to claim 4, characterized in that: The main board body (921) is made of piezoelectric ceramics, and the bubble divider (92) further comprises a power module connected to the main board body (921).

6. The waterway system according to claim 4, characterized in that: The debubble assembly (9) further comprises a bubble breaking pipe (93), wherein the bubble breaking pipe (93) is positioned in the bubble breaking channel (91) and downstream of the bubble divider (92), and the bubble breaking pipe (93) extends spirally along the fluid flow direction.

7. The waterway system according to claim 6, characterized in that: A positioning rod (94) is provided in the bubble breaking channel (91), one end of the bubble breaking tube (93) is connected to the positioning rod (94), the bubble breaking tube (93) is elastic and the axis of the spirally extended bubble breaking tube (93) deviates from the axis of the bubble breaking channel (91).

8. The waterway system according to claim 2, characterized in that: The water inlet pipeline (7) is formed with an exhaust pipe section extending longitudinally, and the water passage pipe (81) extends longitudinally and is connected in series with the exhaust pipe section.

9. The waterway system according to claim 2, characterized in that: The signal output end of the pipeline liquid level sensor (8) is connected to a filter circuit.

10. An instant hot water drinking device, characterized in that: It comprises a controller and a waterway system as claimed in any one of claims 2 to 9.

11. A drinking water equipment control method, characterized in that: The control method is applied to the instant hot water drinking device as claimed in claim 10, and at least comprises the following steps: When the power is turned on normally, the hot water switch on the machine base (1) is triggered, and the control panel receives the hot water command; The control panel controls the water pump (3) to start, and the water pump (3) generates negative pressure to draw water from the water tank (2) to the heating device (4); the pipeline liquid level sensor (8) detects the liquid level in the water inlet pipeline (7) to determine whether there is water; If the pipeline liquid level sensor (8) detects that there is no water in the water inlet pipeline (7), the pipeline liquid level sensor (8) outputs a high voltage signal to the controller, and the controller controls the heating device (4) and the water pump (3) to stop, and alarms to indicate water shortage, reminding the user to add water to the water tank (2); If the pipeline liquid level sensor (8) detects that there is water in the water inlet pipe (7), the pipeline liquid level sensor (8) outputs a low voltage signal to the controller, and the controller controls the heating device (4) to start, and the water in the water tank (2) is heated by the heating device (4) and then flows out through the water outlet (5). After a preset time, the water pump (3) and the heating device (4) stop working.

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