Bubble water mixing and exhaust pressure relief function waterway

Abstract

The utility model relates to bubble water equipment technical field, concretely relates to a bubble water mixes and exhaust pressure relief function water path, it includes refrigerated water tank, coil pipe, carbonic acid jar and matched inlet and outlet water module, its core lies in that the booster exhaust pressure relief module connects the exhaust pressure relief solenoid valve directly in booster pump water outlet, guarantees smooth starting through the exhaust elimination air block before pump starting, and the active pressure relief protection element after pump stops, the device reliability and life are improved obviously, simultaneously utilize refrigerated water tank precooling to improve carbonization efficiency, and the independent ice water and bubble water module are combined to realize many drinks on demand output, and the overall structure is compact and reasonable, and the function is perfect and stable.

Description

Technical Field

[0001] This utility model relates to the field of sparkling water equipment technology, and more specifically, it relates to a water circuit with functions of mixing air and venting and depressurizing in sparkling water. Background Technology

[0002] In the water circuit system of a sparkling water machine with a booster pump, a relatively closed high-pressure circulating water circuit is often constructed to improve carbonation efficiency. However, such water circuits in existing technologies have two significant drawbacks: First, if air accumulates in the pump head and front-end pipeline during the initial startup of the booster pump, an "air blockage" phenomenon is very likely to occur. This means that the booster pump cannot effectively expel the air and therefore cannot establish sufficient initial pump pressure, leading to difficulties in pumping water, or even dry running or running dry. This not only affects the reliability of bubble water production but also threatens the lifespan of the pump itself.

[0003] Secondly, even after the system is completed and the booster pump stops working, the entire closed water system will remain under the same high pressure as when it was operating. This continuous pressure acts on the pipes, seals, and pump body for a long time, accelerating their aging and fatigue, and significantly affecting the long-term service life and safety of the entire water system.

[0004] Therefore, there is an urgent need for a water circuit solution that can effectively solve the problem of air blockage during pump startup and can actively release pressure after operation to protect the system. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a water circuit with functions of mixing air and venting pressure relief in bubble water, so as to solve the technical problems of the booster pump being difficult to start due to air blockage and the system pressure holding damaging the life of components in the existing water circuit.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A water circuit with a function of mixing gas and venting pressure relief for sparkling water includes a chilled water tank for converting room temperature water into ice water, a coil and a carbonated water tank installed in the chilled water tank, a water inlet module installed at the water inlet of the chilled water tank and inputting room temperature water into the tank and the coil, an air inlet module installed at the air inlet of the carbonated water tank and inputting carbon dioxide into the tank, a pressurization, venting and pressure relief module installed at the water outlet of the coil and inputting the ice water inside the coil into the carbonated water tank, an ice water outlet module installed at the water outlet of the coil and outputting the ice water inside the coil for drinking, and a sparkling water outlet module installed at the water outlet of the carbonated water tank and outputting the sparkling water inside the coil for drinking. The booster, vent, and pressure relief module includes a booster pump, a vent and pressure relief solenoid valve, and an inlet check valve. The inlet end of the inlet check valve is connected to the outlet end of the booster pump, and its outlet end is connected to the inlet end of the carbonate tank. The inlet end of the vent and pressure relief solenoid valve is connected to the outlet end of the booster pump. The inlet end of the booster pump is connected to the outlet end of the coil. The chilled water output module includes a chilled water pump, a chilled water outlet valve, and a chilled water outlet check valve; the inlet end of the chilled water outlet check valve is connected to the outlet end of the chilled water outlet valve, and its outlet end is connected to the inlet end of the chilled water pump; the inlet end of the chilled water outlet valve is connected to the outlet end of the coil.

[0007] As a further preferred embodiment, the water inlet module includes a liquid pressure reducing valve, a negative pressure valve, and a booster water inlet solenoid valve arranged in parallel; the outlet of the liquid pressure reducing valve is connected to the inlet of the chilled water tank through the pressure reducing water inlet solenoid valve; the outlets of the negative pressure valve and the booster water inlet solenoid valve are both connected to the inlet of the coil; and the inlets of the liquid pressure reducing valve, the negative pressure valve, and the booster water inlet solenoid valve are all connected to the water inlet pipe.

[0008] As a further preferred option, a two-inlet-one-outlet solenoid valve is also included; the inlet end of the two-inlet-one-outlet solenoid valve, which is normally open, is connected to the outlet end of the venting and pressure-relief solenoid valve, and the inlet end of the two-inlet-one-outlet solenoid valve, which is normally closed, is connected to the outlet end of the pressure-reducing inlet solenoid valve.

[0009] As a further preferred embodiment, the air intake module includes a gas tank for holding carbon dioxide, a gas pressure reducing valve, a high-pressure switch, and an air intake check valve; the air inlet of the gas pressure reducing valve is connected to the air outlet of the gas tank, and its air outlet is connected to the air inlet of the high-pressure switch; the air inlet of the air intake check valve is connected to the air outlet of the high-pressure switch, and its air outlet is connected to the air inlet of the carbonate tank.

[0010] As a further preferred embodiment, the bubble-generating water module includes a gas-liquid pressure reducing valve and a high-pressure solenoid valve; the inlet end of the gas-liquid pressure reducing valve is connected to the outlet end of the carbonate tank, and its outlet end is connected to the inlet end of the high-pressure solenoid valve.

[0011] As a further preferred option, it also includes a three-in-one water outlet; a normal temperature water pump and a heating element are installed at the outlet end of the negative pressure valve; the inlet end of the normal temperature water pump is connected to the outlet end of the negative pressure valve, and its outlet end is connected to the inlet end of the heating element; the outlet end of the heating element and the outlet end of the ice water pump are both connected to the three-in-one water outlet.

[0012] As a further preferred option, the chilled water tank is equipped with an exhaust pipe to facilitate the entry of room temperature water into its interior; a carbonation tank is fitted with a coil to reduce the volume of the chilled water tank; and an NTC thermistor is installed inside the chilled water tank to sense the temperature of the chilled water.

[0013] This invention offers the following advantages: By directly connecting the exhaust and pressure relief solenoid valve to the water outlet of the booster pump, it effectively solves the two major technical challenges of airlock during pump startup and system pressure maintenance. Before pump startup, exhaust can be performed to ensure smooth pressure build-up and prevent dry running; after shutdown, residual high pressure in the pipeline can be actively released, significantly extending the lifespan of the pump body and seals. This water circuit utilizes a chilled water tank and built-in coils for pre-cooling the water, and the chilled water undergoes efficient carbonation in the carbonated tank, producing high-quality sparkling water with a refreshing and delicate taste. Simultaneously, independent ice water and sparkling water output modules enable on-demand output of ice water and sparkling water, meeting diverse drinking needs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Chilled water tank; 11. Exhaust pipe; 12. NTC thermistor; 13. Water level switch; 2. Coil; 3. Carbonate tank; 4. Water inlet module; 41. Liquid pressure reducing valve; 42. Negative pressure valve; 43. Booster water inlet solenoid valve; 44. Pressure reducing water inlet solenoid valve; 45. Flow meter; 5. Air inlet module; 51. Gas tank; 52. Gas pressure reducing valve; 53. High pressure switch; 54. Air inlet check valve; 6. 61. Booster pump; 62. Exhaust and pressure relief solenoid valve; 63. Inlet check valve; 7. Chill water output module; 71. Chill water pump; 72. Chill water outlet valve; 73. Chill water outlet check valve; 8. Aerated water output module; 81. Gas-liquid pressure reducing valve; 82. High-pressure solenoid valve; 9. Two-inlet-one-outlet solenoid valve; 10. Inlet pipe; 20. Three-in-one water outlet; 30. Normal temperature water pump; 40. Heating element. Detailed Implementation

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Unless otherwise specified, "installation" generally refers to a relatively fixed connection between two components achieved through connecting parts such as screws and bolts. 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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0017] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0018] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] This invention provides a water circuit with functions of mixing air and venting / depressurizing in sparkling water, such as... Figure 1 As shown, it includes a chilled water tank 1 for converting room temperature water into ice water, a coil 2 and a carbonated water tank 3 installed in the chilled water tank 1, a water inlet module 4 installed at the water inlet of the chilled water tank 1 and inputting room temperature water into the tank and the coil 2, an air inlet module 5 installed at the air inlet of the carbonated water tank 3 and inputting carbon dioxide into the tank, a pressurization and depressurization module 6 installed at the water outlet of the coil 2 and inputting the ice water inside the coil into the carbonated water tank 3, an ice water outlet module 7 installed at the water outlet of the coil 2 and used to output the ice water inside the coil for drinking, and a sparkling water outlet module 8 installed at the water outlet of the carbonated water tank 3 and used to output the sparkling water inside the coil for drinking. The booster, venting, and depressurization module 6 includes a booster pump 61, a depressurization and depressurization solenoid valve 62, and a water inlet check valve 63. The water inlet end of the water inlet check valve 63 is connected to the water outlet end of the booster pump 61, and its water outlet end is connected to the water inlet end of the carbonate tank 3. The inlet end of the depressurization and depressurization solenoid valve 62 is connected to the water outlet end of the booster pump 61. The water inlet end of the booster pump 61 is connected to the water outlet end of the coil 2. The chilled water module 7 includes a chilled water pump 71, a chilled water outlet valve 72, and a chilled water outlet check valve 73; the inlet of the chilled water outlet check valve 73 is connected to the outlet of the chilled water outlet valve 72, and its outlet is connected to the inlet of the chilled water pump 71; the inlet of the chilled water outlet valve 72 is connected to the outlet of the coil 2.

[0021] Specifically, the chilled water tank 1 is a relatively sealed enclosure, essentially a refrigeration element that cools the room-temperature water contained within its internal cavity, turning it into ice water. Inside the chilled water tank 1, a coil 2 and a carbonated water tank 3 are fixedly installed to save space. The water in the coil 2 is for drinking, while the water in the chilled water tank 1 is used to cool the coil 2. The carbonated water tank 3 efficiently mixes carbon dioxide and ice water to create sparkling water. The chilled water tank 1 has a sealed end cap on top (not clearly shown in the attached diagram) to prevent foreign objects from entering its internal cavity. A vent 11 is inserted at its lower right corner to allow room temperature water to enter. An NTC thermistor 12 is installed at its upper left corner to sense the temperature of the chilled water inside; the NTC thermistor 12 is essentially a sensor switch to control whether the chilled water tank 1 is operating. A water level switch 13 is installed at its lower left corner to sense the depth of the chilled water inside; when the water level reaches a preset depth, the water inlet module 4 stops supplying room temperature water. The coil 2 has one inlet connector and one outlet connector, both located on the sealed end cap. The carbonated water tank 3 has one air inlet connector, one water inlet connector, and one sparkling water outlet connector, all three located on the sealed end cap.

[0022] The water inlet module 2 supplies room temperature water to the chilled water tank 1 and the coil 2 via conduits, while the air inlet module 5 supplies compressed carbon dioxide to the carbonated water tank 3 via conduits. The sparkling water outlet module 8 outputs sparkling water from the carbonated water tank 3 as needed for user consumption via conduits.

[0023] The outlet of coil 2 is connected to the inlet of booster pump 61 and the inlet of chilled water outlet valve 72 via a conduit and a tee connector, respectively; the outlet of booster pump 61 is connected to the inlet of venting and depressurizing solenoid valve 62 and the inlet of inlet check valve 63 via a conduit and a tee connector, respectively; the outlet of inlet check valve 63 is connected to the inlet of carbonate tank 3 via a conduit; and the outlet of venting and depressurizing solenoid valve 62 is connected to the external environment.

[0024] The inlet of the ice water outlet check valve 73 is connected to the outlet connector of the ice water outlet valve 72 (i.e., the solenoid valve) through a conduit, and its outlet is connected to the inlet connector of the ice water pump 71 through a conduit; the outlet connector of the ice water pump 71 outputs the ice water in the coil 2 as needed for users to drink.

[0025] When booster pump 61 draws chilled water from coil 2 and injects it into carbonated water tank 3, the initial pump pressure is insufficient to force the chilled water into tank 3. Air must be expelled from the tank. At this point, the venting and pressure relief solenoid valve 62 must be opened to allow air and some chilled water to escape. After a few seconds, the venting and pressure relief solenoid valve 62 is closed. After a few seconds of linear pressure increase, booster pump 61 reaches its peak pressure, and the chilled water is then forced into carbonated water tank 3. During the process of chilled water being forced into carbonated water tank 3, as the pressure increases, the pressure in the entire connected water circuit reaches the peak pressure of booster pump 61, a phenomenon known as pressure buildup. Therefore, when booster pump 61 stops operating, the venting and pressure relief solenoid valve 62 must be opened again, a process known as pressure relief. Depressurization of the water circuit conduit protects components in the water circuit (such as chilled water pump 71).

[0026] As a further preferred embodiment, the water inlet module 4 includes a liquid pressure reducing valve 41, a negative pressure valve 42, and a booster water inlet solenoid valve 43 arranged in parallel; the outlet of the liquid pressure reducing valve 41 is connected to the inlet of the chilled water tank 1 through the pressure reducing water inlet solenoid valve 44; the outlets of the negative pressure valve 42 and the booster water inlet solenoid valve 43 are both connected to the inlet of the coil 2; the inlets of the liquid pressure reducing valve 41, the negative pressure valve 42, and the booster water inlet solenoid valve 43 are all connected to the water inlet pipe 10.

[0027] like Figure 1 As shown, the core of the water inlet module (4) lies in the precise distribution and pressure management of the incoming water through three pretreatment branches set in parallel (i.e., the liquid pressure reducing valve branch, the negative pressure valve branch, and the booster water inlet solenoid valve branch). These three branches share the same water inlet pipe (10), but are functionally independent, forming a highly efficient and coordinated water inlet system.

[0028] Liquid pressure reducing valve branch (stable water supply path): This path is mainly responsible for providing room temperature water with stable pressure to the chilled water tank (1). The liquid pressure reducing valve (41) first reduces the potentially high inlet pressure (such as municipal water network pressure) in the inlet pipe to a stable low pressure value suitable for the safe operation of the chilled water tank (1). Then, through a controlled pressure reducing inlet solenoid valve (44), the pressure-reduced water is injected into the chilled water tank (1) through the inlet and outlet ports located at the bottom left corner. This design ensures that the pressure of the chilled water tank (1) is stable during the water supply process, avoids pressure shock, and realizes automatic start and stop control of water supply through the pressure reducing inlet solenoid valve (44).

[0029] Negative pressure valve branch and booster water inlet solenoid valve branch (main drinking water path): These two branches are connected in parallel to supply water to the inlet of the coil (2), which is the direct water source for preparing ice water, hot water and bubble water.

[0030] The function of the negative pressure valve (42) is to prevent liquid backflow in the water circuit and ensure hygiene and safety. At the same time, its structure helps to maintain a certain water flow stability.

[0031] The booster water inlet solenoid valve (43) opens when needed to provide water with a certain pressure to the coil (2), which is crucial for the working efficiency of the subsequent booster pump (61) and to ensure that the water flow can overcome the pressure inside the carbonate tank (3) when preparing bubble water.

[0032] The advantage of the parallel architecture of these three pretreatment branches is that it realizes independent and precise control of water replenishment in the chilled water tank (1) and water inlet in the coil (2), avoiding mutual interference between single water paths, ensuring the stability of the water level in the chilled water tank (1), and ensuring the supply pressure and flow of drinking water.

[0033] As a further preferred option, a two-inlet-one-outlet solenoid valve 9 is also included; the inlet end of the two-inlet-one-outlet solenoid valve 9, which is normally open, is connected to the outlet end of the exhaust and pressure relief solenoid valve 62, and the inlet end of the two-inlet-one-outlet solenoid valve 9, which is normally closed, is connected to the outlet end of the pressure reducing inlet solenoid valve 44.

[0034] like Figure 1 As shown, to further optimize the system layout, this utility model introduces a two-inlet, one-outlet solenoid valve (9), which cleverly combines two functional pathways: Normally open path (main exhaust and pressure relief path): The normally open inlet end of the two-inlet-one-outlet solenoid valve (9) is directly connected to the outlet end of the exhaust and pressure relief solenoid valve (62). This means that, in the default state, the valve provides a direct channel to the external environment for the exhaust and pressure relief function. When exhaust or pressure relief is required, it can be achieved simply by controlling the exhaust and pressure relief solenoid valve (62) to open.

[0035] Normally closed path (emergency drainage / cleaning path): Its normally closed inlet end is connected to the outlet end of the pressure reducing inlet solenoid valve (44). This design includes an emergency drainage function. In specific situations (such as equipment maintenance or long-term disuse), the path can be switched by controlling the two-inlet-one-outlet solenoid valve (9) to drain the water stored in the chilled water tank (1) through this path without disassembling the chilled water tank (1), which is more convenient.

[0036] In actual operation, the components work together as follows: When water needs to be added to the chilled water tank (1), the controller opens the pressure-reducing inlet solenoid valve (44), and the water is injected into the chilled water tank (1) after being depressurized by the liquid pressure-reducing valve (41). At this time, the two-inlet-one-outlet solenoid valve (9) remains in normal condition (i.e., its inlet end is connected to the outlet end), and is isolated from the exhaust and pressure relief passage.

[0037] When exhaust or pressure relief is required, the controller opens the exhaust and pressure relief solenoid valve (62), and the high-pressure gas or liquid is discharged through the normally open inlet end of the two-inlet-one-outlet solenoid valve (9).

[0038] When it is necessary to drain the water stored in the chilled water tank (1), the controller first closes the pressure reducing inlet solenoid valve (44), and then switches the state of the two-inlet-one-outlet solenoid valve (9) so that its normally closed inlet end connects with the outlet end, and the water can be discharged through this dedicated path.

[0039] As a further preferred embodiment, the air intake module 5 includes a gas tank 51 for holding carbon dioxide, a gas pressure reducing valve 52, a high-pressure switch 53, and an air intake check valve 54; the air intake port of the gas pressure reducing valve 52 is connected to the air outlet of the gas tank 51, and its air outlet is connected to the air intake port of the high-pressure switch 53; the air intake port of the air intake check valve 54 is connected to the air outlet of the high-pressure switch 53, and its air outlet is connected to the air intake end of the carbonate tank 3.

[0040] like Figure 1 As shown, the intake module (5) constitutes a stable supply and safety control system for carbon dioxide gas. When it is working, high-pressure carbon dioxide is output from the gas tank (51). First, the pressure is reduced to a safe and stable low pressure suitable for carbonation by the gas pressure reducing valve (52). The high-pressure switch (53) is connected in series in the gas path after pressure reduction to monitor the pressure status in real time. When the pressure is abnormally high, the gas path is automatically cut off to realize overpressure safety protection. The intake check valve (54) at the end ensures that the gas can only flow into the carbonate tank (3) in one direction, effectively preventing high-pressure liquid or gas backflow and protecting the upstream gas path components.

[0041] As a further preferred embodiment, the bubble-generating water module 8 includes a gas-liquid pressure reducing valve 81 and a high-pressure solenoid valve 82; the inlet end of the gas-liquid pressure reducing valve 81 is connected to the outlet end of the carbonate tank 3, and its outlet end is connected to the inlet end of the high-pressure solenoid valve 82.

[0042] like Figure 1 As shown, the gas-liquid pressure reducing valve (81) first smoothly reduces the high-pressure gas-liquid mixture from the carbonated water tank (3) to a safe drinking pressure, effectively preventing foam splashing caused by a sudden drop in pressure; the high-pressure solenoid valve (82) connected to its outlet serves as the final execution unit, and is controlled to open and close to achieve precise and reliable on-demand dispensing. The sparkling water module 8 ensures that the sparkling water output process is both smooth, stable and safe through two-stage control.

[0043] As a further preferred option, a three-in-one water outlet 20 is also included; a normal temperature water pump 30 and a heating element 40 are provided at the water outlet of the negative pressure valve 42; the water inlet of the normal temperature water pump 30 is connected to the water outlet of the negative pressure valve 42, and its water outlet is connected to the water inlet of the heating element 40; the water outlet of the heating element 40 and the water outlet of the ice water pump 71 are both connected to the three-in-one water outlet 20.

[0044] like Figure 1 As shown, the three-in-one water outlet (20) serves as the terminal output interface of this water circuit, realizing the integrated supply of various beverages and demonstrating a high degree of functional integration and user experience optimization. Its core lies in the intelligent convergence of room temperature water, hot water, and ice water channels: the room temperature water pump (30) draws water from the back end of the negative pressure valve (42), and the room temperature water flows through the flow meter (45) and then flows into the inner cavity of the room temperature water pump (30) and the heating element (40), and finally flows out from the three-in-one water outlet (20) for drinking; when hot water is needed, the heating element (40) can be turned on, and the heating element (40) can heat the room temperature water instantly. At the same time, the outlet connector of the ice water pump 71 is also connected to the three-in-one water outlet (20) through the conduit and the three-way connector, thereby exporting sparkling water as needed. The three-in-one water outlet (20) replaces multiple independent water outlets with a simple terminal, has a compact structure, avoids complicated multi-way external pipes, and allows users to conveniently obtain room temperature water, hot water, ice water and even sparkling water (which needs to be combined with the sparkling water module), greatly improving the practicality and ease of operation of the equipment.

[0045] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A water circuit with functions of mixing air and venting / releasing pressure in sparkling water, characterized in that, It includes a chilled water tank for converting room temperature water into ice water, a coil and a carbonated water tank installed in the chilled water tank, a water inlet module installed at the water inlet of the chilled water tank and inputting room temperature water into the tank and the coil, an air inlet module installed at the air inlet of the carbonated water tank and inputting carbon dioxide into the tank, a pressurization and depressurization module installed at the water outlet of the coil and inputting the ice water inside the coil into the carbonated water tank, an ice water outlet module installed at the water outlet of the coil and used to output the ice water inside the coil for drinking, and a sparkling water outlet module installed at the water outlet of the carbonated water tank and used to output the sparkling water inside the coil for drinking. The booster, vent, and pressure relief module includes a booster pump, a vent and pressure relief solenoid valve, and an inlet check valve. The inlet end of the inlet check valve is connected to the outlet end of the booster pump, and its outlet end is connected to the inlet end of the carbonate tank. The inlet end of the vent and pressure relief solenoid valve is connected to the outlet end of the booster pump. The inlet end of the booster pump is connected to the outlet end of the coil. The chilled water output module includes a chilled water pump, a chilled water outlet valve, and a chilled water outlet check valve; the inlet end of the chilled water outlet check valve is connected to the outlet end of the chilled water outlet valve, and its outlet end is connected to the inlet end of the chilled water pump; the inlet end of the chilled water outlet valve is connected to the outlet end of the coil.

2. The water circuit for mixing and depressurizing bubble water according to claim 1, characterized in that, The water inlet module includes a liquid pressure reducing valve, a negative pressure valve, and a booster water inlet solenoid valve arranged in parallel; the outlet of the liquid pressure reducing valve is connected to the inlet of the chilled water tank through the pressure reducing water inlet solenoid valve; the outlets of the negative pressure valve and the booster water inlet solenoid valve are both connected to the inlet of the coil; the inlets of the liquid pressure reducing valve, the negative pressure valve, and the booster water inlet solenoid valve are all connected to the water inlet pipe.

3. The water circuit for mixing and venting water with depressurization function according to claim 2, characterized in that, It also includes a two-inlet-one-outlet solenoid valve; the inlet end of the two-inlet-one-outlet solenoid valve, which is normally open, is connected to the outlet end of the exhaust and pressure relief solenoid valve, and the inlet end of the two-inlet-one-outlet solenoid valve, which is normally closed, is connected to the outlet end of the pressure reducing inlet solenoid valve.

4. The water circuit for mixing and venting / depressurizing bubble water according to claim 1, characterized in that, The air intake module includes a gas tank for holding carbon dioxide, a gas pressure reducing valve, a high-pressure switch, and an air intake check valve; the air intake port of the gas pressure reducing valve is connected to the air outlet of the gas tank, and its air outlet is connected to the air intake port of the high-pressure switch; the air intake port of the air intake check valve is connected to the air outlet of the high-pressure switch, and its air outlet is connected to the air intake end of the carbonate tank.

5. The water circuit for mixing and venting / depressurizing bubble water according to claim 1, characterized in that, The bubble-generating water module includes a gas-liquid pressure reducing valve and a high-pressure solenoid valve; the inlet of the gas-liquid pressure reducing valve is connected to the outlet of the carbonate tank, and its outlet is connected to the inlet of the high-pressure solenoid valve.

6. The water circuit for mixing and venting water pressure relief according to claim 1, characterized in that, It also includes a three-in-one water outlet; a normal temperature water pump and a heating element are installed at the outlet end of the negative pressure valve; the inlet end of the normal temperature water pump is connected to the outlet end of the negative pressure valve, and its outlet end is connected to the inlet end of the heating element; the outlet end of the heating element and the outlet end of the ice water pump are both connected to the three-in-one water outlet.

7. The water circuit for mixing and venting / depressurizing bubble water according to claim 1, characterized in that, The chilled water tank is equipped with an exhaust pipe to facilitate the entry of room temperature water into its interior; the coil is fitted with a carbonate tank to reduce the volume of the chilled water tank; the chilled water tank is equipped with an NTC thermistor for sensing the temperature of the chilled water.

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