Water system and water purifier

Abstract

The present invention discloses a water system and a water purifier, wherein the water system comprises a water inlet waterway, an air inlet branch and an air-water mixing tank, wherein the water inlet waterway has a raw water interface, and a pre-control valve is arranged on the water inlet waterway; the water inlet waterway and the air inlet branch are both connected to the air-water mixing tank, and the air-water mixing tank is also provided with a water outlet for mixed air water to flow out. Since the water system proposed in the present application comprises a water inlet waterway, an air inlet branch and an air-water mixing tank, it is possible to fill domestic water with tiny bubbles, thereby improving the washing effect of domestic water.

Description

Technical Field

[0001] The present invention relates to the technical field of water purifiers, and in particular to a water channel system and a water purifier. Background Art

[0002] The water purifier uses tap water as the inlet water, and can obtain direct drinking water or domestic water through filtering with different filter elements. Direct drinking water reaches the level of pure water and can be drunk directly; domestic water is filtered through primary filtration to remove large particle impurities and residual chlorine in the water, and can be used for most daily purposes, such as washing fruits, vegetables, and oil stains. The domestic water of existing water purifiers is generally filtered through PP cotton filter elements or activated carbon filter elements, or filtered through both at the same time, or filtered through composite filter elements with the same function, so the washing effect of domestic water of existing water purifiers is very limited. Summary of the invention

[0003] The main purpose of the present invention is to provide a water system, aiming to improve the washing effect of domestic water in a water purifier.

[0004] To achieve the above-mentioned purpose, the water system proposed in the present invention includes: an inlet waterway, the inlet waterway has a raw water interface, and a pre-control valve is arranged on the inlet waterway; an air intake branch; and an air-water mixing tank, the inlet waterway and the air intake branch are both connected to the air-water mixing tank, and the air-water mixing tank is also provided with a water outlet for the mixed air water to flow out.

[0005] Preferably, the water system further comprises an air-water mixing branch, which is provided with a booster pump and the air-water mixing tank in sequence in the water flow direction; the water inlet waterway and the air inlet branch are connected at the same position of the air-water mixing branch.

[0006] Preferably, a water inlet and a water outlet are provided on the top of the gas-water mixing tank, the booster pump is connected to the water inlet of the gas-water mixing tank, and the gas-water mixing tank includes a first water outlet pipe, which extends through the water outlet of the gas-water mixing tank to the bottom of the gas-water mixing tank.

[0007] Preferably, the gas-water mixing tank further comprises a first water inlet pipe, and a water outlet of the first water inlet pipe is arranged close to a water inlet of the gas-water mixing tank.

[0008] Preferably, the gas-water mixing device further comprises a water level detection device for detecting the water level in the gas-water mixing tank, and the water level detection device is connected to the pre-control valve.

[0009] Preferably, the water level detection device comprises a controller disposed at the bottom of the gas-water mixing tank and a float disposed in the gas-water mixing tank, and the controller is used to open the front control valve when the float approaches the bottom wall of the gas-water mixing tank.

[0010] Preferably, a first one-way valve that conducts one-way traffic in the intake direction is provided on the intake branch line.

[0011] Preferably, the water system also includes a parallel branch, on which a parallel control valve is provided, and the parallel branch has a first water inlet and a first water outlet, the first water inlet is connected to the raw water interface, and the first water outlet is connected to the water outlet of the gas-water mixing tank.

[0012] Preferably, a second one-way valve is further provided on the gas-water mixing branch, the second one-way valve is located between the water outlet of the gas-water mixing tank and the first water outlet, and the second one-way valve is unidirectionally conductive from the water outlet of the gas-water mixing tank to the first water outlet.

[0013] Preferably, the water system further comprises a drainage branch, on which a drainage control valve is provided, the drainage branch having a second water inlet and a second water outlet, and the second water inlet is connected to the water outlet of the air-water mixing tank.

[0014] Preferably, the water system also includes a clean water branch, which is provided with a water inlet control valve and a reverse osmosis filter connected in sequence, the reverse osmosis filter having a water inlet end, a pure water end and a waste water end, the water inlet end is connected to the water inlet control valve, and the waste water end is connected to a drain outlet; the drain outlet is connected to the second water outlet so that the clean water branch and the drain branch share the drain outlet.

[0015] Preferably, the pure water end of the reverse osmosis filter is sequentially connected to a third one-way valve and a post-filter along the water outlet direction.

[0016] The present invention also proposes a water purifier, which includes the water system, and the water system includes: an inlet waterway, the inlet waterway has a raw water interface, and a pre-control valve is provided on the inlet waterway; an air intake branch; and an air-water mixing tank, the inlet waterway and the air intake branch are both connected to the air-water mixing tank, and the air-water mixing tank is also provided with a water outlet for mixed air and water to flow out.

[0017] The water system proposed in the present application includes a water inlet waterway, an air inlet branch and an air-water mixing tank, so that the domestic water can be filled with tiny bubbles, thereby improving the washing effect of the domestic water. Specifically, the working process of the water system is as follows: first, the air inlet branch is connected, and the air-water mixing device is filled with air. Then, the water inlet waterway is connected, and the water enters the air-water mixing device and mixes with the gas. When the water mixed with gas flows out through the first faucet, the domestic water that flows out carries a large number of bubbles. Due to the microphysical properties of the microbubbles and the surface tension, the impurities can be broken, so that the impurities can be more easily removed from the surface of the object. In addition, due to the collision, rupture and fusion of the microbubbles, the surface of the object is impacted, and the impurities fall off and are washed away or floated to the water surface by the bubbles, thereby achieving a more thorough cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a waterway system of the present invention;

[0020] Figure 2 It is a structural schematic diagram of another embodiment of the waterway system of the present invention;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the gas-water mixing tank and the water level detection device in state 1;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure in another state.

[0023] Description of Figure Numbers:

[0024]

[0025]

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The present invention provides a water channel system, which can increase micro-bubbles in domestic water and improve the washing effect of the domestic water.

[0031] In one embodiment of the present invention, Figure 1 As shown, the water system includes an inlet waterway 100, an air inlet branch 200 and an air-water mixing tank 320, the inlet waterway 100 has a raw water interface, the inlet waterway 100 is provided with a pre-control valve 110, the inlet waterway 100 and the air inlet branch 200 are both connected to the air-water mixing tank 320, and the air-water mixing tank 320 is also provided with an outlet for mixed air and water to flow out.

[0032] Specifically, in this embodiment, the gas-water mixing tank 320 is provided with a water inlet and an air inlet, respectively, the water inlet waterway is connected to the water inlet, and the air inlet branch is connected to the air inlet; in other embodiments, a connecting pipe can also be led out from the gas-water mixing tank, and the water inlet waterway and the air inlet branch are connected to the connecting pipe respectively. In addition, the water outlet of the gas-water mixing tank can be realized by directly opening the gas-water mixing tank, or a first faucet connected to the gas-water mixing tank can be provided, and the present application does not limit this. In this embodiment, the gas-water mixing tank is connected to a first faucet (not shown), and the gas-mixed water flows out through the first faucet.

[0033] Specifically, the mixed gas water flowing out of the first faucet is used as domestic water for washing dishes and vegetables. Since the water system proposed in the present application includes a water inlet waterway 100, an air inlet branch 200 and an air-water mixing branch 300, the domestic water can be filled with tiny bubbles, thereby improving the washing effect of the domestic water. Specifically, the working process of the water system is as follows: first, the air inlet branch 200 is turned on, and the air-water mixing device is filled with air. Then, the water inlet waterway 100 is turned on, and water enters the air-water mixing device and is mixed with the gas. When the water mixed with gas flows out through the first faucet, the domestic water flowing out carries a large number of bubbles, thereby improving the washing effect of the domestic water.

[0034] When the water purifier takes domestic water, it will introduce air into the air-water mixing device to mix the air and water, thereby increasing the number of microbubbles in the domestic water, with a concentration of hundreds of thousands or even millions. When using domestic water with microbubbles for cleaning, due to the microphysical properties of the microbubbles and the surface tension, the impurities can be broken, making it easier for the impurities to fall off the surface of the object. In addition, due to the collision, rupture and fusion of microbubbles, the surface of the object is impacted, and the impurities fall off and are washed away or float to the water surface with the bubbles, thereby achieving a more thorough cleaning effect.

[0035] As a preferred embodiment, the air intake branch 200 is provided with a first one-way valve 210 that is unidirectionally conductive in the air intake direction. The function of the first one-way valve 210 is to allow gas to enter from the gas inlet and prevent water or gas from flowing from the water path to the gas inlet of the air intake branch 200.

[0036] For further information, please refer to Figure 1 , Figure 3 and Figure 4 In order to promote the mixing of water and gas, in one embodiment of the present application, the water system also includes a gas-water mixing branch, and the gas-water mixing branch is provided with a booster pump and the gas-water mixing tank in sequence in the direction of water flow; the water inlet waterway and the air inlet branch are connected at the same position as the gas-water mixing branch. In this way, the mixing of water and gas can be promoted. More importantly, since the water inlet waterway and the air inlet branch share the same position, the connection points on the gas-water mixing branch can be reduced, reducing the risk of leakage of liquid or gas. Specifically, in this embodiment, the connection position is located in front of the booster pump, but the design of the present application is not limited thereto, and can also be located between the booster pump and the gas-water mixing tank. In addition, in other embodiments, a booster pump may not be provided, and the tap water entering the water inlet may have its own pressure. Similarly, the gas entering the air inlet may also have its own pressure.

[0037] Further, the structure of the gas-water mixing tank 320 is now described. In this embodiment, a water inlet and a water outlet are provided on the top of the gas-water mixing tank 320, the booster pump 310 is connected to the water inlet of the gas-water mixing tank 320, and the gas-water mixing tank 320 includes a first water outlet pipe 321, which extends to the bottom of the gas-water mixing tank 320 through the water outlet of the gas-water mixing tank 320.

[0038] Preferably, in order to further promote the mixing of water and gas, in one embodiment of the present application, the gas-water mixing tank 320 also includes a first water inlet pipe 322, and the water outlet of the first water inlet pipe 322 is arranged close to the water inlet of the gas-water mixing tank 320, so that the contact area between water and gas is larger, thereby promoting the mixing of water and gas.

[0039] For further information, please refer to Figure 1 In order to replenish water into the gas-water mixing tank 320 in time when the water in the gas-water mixing tank 320 is about to run out, in one embodiment of the present application, the gas-water mixing device further includes a water level detection device 330 for detecting the water level in the gas-water mixing tank 320, and the water level detection device 330 is connected to the pre-control valve 110. In this way, when the water level detection device 330 detects that the water level in the gas-water mixing tank 320 drops to a preset water level, the water level detection device 330 controls the pre-control valve 110 to open, so that water can be added into the gas-water mixing tank 320 in time.

[0040] Specifically, Figure 3 and Figure 4 As shown, the structure of the water level detection device 330 is now described in detail. The water level detection device 330 includes a controller 331 disposed at the bottom of the gas-water mixing tank 320 and a float 332 disposed in the gas-water mixing tank 320. The controller 331 is used to open the pre-control valve 110 when the float 332 is close to the bottom wall of the gas-water mixing tank 320. In this embodiment, the float 332 is a sensible float 332, such as a magnetic float 332. The float 332 can float up and down with the change of the liquid level in the gas-water mixing tank 320. When the water level in the gas-water mixing tank 320 drops to the bottom wall close to the gas-water mixing tank 320, the position of the float 332 drops to the bottom wall close to the gas-water mixing tank 320. After the controller 331 senses the float 332, it will open the pre-control valve 110, so that water can be injected into the gas-water mixing tank 320.

[0041] For further information, please refer to Figure 2Considering that when the user needs to use domestic water for a long time, the pre-control valve 110 needs to be closed to suck air into the gas-water mixing tank 320. At this time, the flow of domestic water flowing out of the first faucet will be significantly reduced. In order to avoid the significant reduction in the flow of domestic water, in this embodiment, the water system also includes a parallel branch 400, and a parallel control valve 410 is provided on the parallel branch 400. The parallel branch 400 has a first water inlet and a first water outlet. The first water inlet is connected to the raw water interface, and the first water outlet is connected to the first faucet. In this way, when the boost pump 310 sucks air into the gas-water mixing tank 320, the parallel control valve 410 is opened, and the water filtered by the pre-filter 800 can flow directly to the first faucet through the parallel control valve 410, so as to ensure that the first faucet is replenished with water through the parallel branch 400, and then the flow of domestic water can be guaranteed.

[0042] For further information, please refer to Figure 1 In order to prevent gas or water from flowing back to the gas-water mixing tank 320, in one embodiment of the present application, a second one-way valve 350 is provided on the gas-water mixing branch between the first water outlet and the water outlet of the gas-water mixing tank 320. The second one-way valve 350 is unidirectionally connected from the water outlet of the gas-water mixing tank 320 to the first water outlet. In this way, when the first faucet is closed, the pressure in the pipeline can be maintained, thereby preventing gas or water from flowing back to the gas-water mixing tank 320.

[0043] As a preferred embodiment, the first faucet includes a faucet body and a first high-pressure switch 370, wherein the first high-pressure switch 370 is used to control the faucet body to be opened or closed; a bubbler joint 360 is also provided on the faucet body, so that the flowing domestic water can be filled with bubbles.

[0044] For further information, please refer to Figure 1 In order to smoothly replenish air into the air-water mixing tank 320 when the first faucet is closed, in one embodiment of the present application, the water system further includes a drainage branch 500, on which a drainage control valve 510 is provided. The drainage branch 500 has a second water inlet and a second water outlet, and the second water inlet is connected to the first water outlet pipe. In this way, when air is replenished into the air-water mixing tank 320 when the first faucet is closed, air can still enter the air-water mixing tank 320 by opening the drainage control valve 510, and the water in the air-water mixing tank 320 is discharged through the drainage branch 500.

[0045] In addition, when the water in the gas-water mixing tank 320 is not used for a long time, the water in the gas-water mixing tank 320 is discharged through the drainage branch 500, which can also prevent bacteria from breeding in domestic water, thereby avoiding secondary pollution when using domestic water for washing.

[0046] Further, please refer to Figure 1 In one embodiment of the present application, the water system further includes a clean water branch 600, and the drainage branch 500 shares a drainage port with the clean water branch 600. Specifically, the clean water branch 600 is provided with a water inlet control valve 610 and a reverse osmosis filter 620 which are connected in sequence, and the reverse osmosis filter 620 has a second water inlet end, a pure water end and a waste water end, the water inlet control valve 610 is connected to the second water inlet end, the pure water end is connected to a second faucet (not shown), and the waste water end is connected to the drainage port; the second water outlet is connected to the drainage port, so that the drainage branch 500 shares the drainage port with the clean water branch 600. In this way, the compactness of the structure of the water system can be improved, and the volume of the water purifier using the water system proposed in the present application can be reduced.

[0047] Specifically, a post-filter 700 and a second high-pressure switch 650 are sequentially provided on the clean water branch 600 between the second faucet and the pure water end. When the second high-pressure switch 650 detects a pressure change, the second faucet can be controlled to be opened or closed. The water flowing out of the second faucet is pure water for direct drinking by users. In this embodiment, the post-filter 700 has a carbon rod filter element, so that the taste of pure water can be improved.

[0048] As a preferred method, Figure 1 As shown, a third one-way valve 640 is further provided between the pure water end of the reverse osmosis filter 620 and the post-filter 700. The function of the third one-way valve 640 is to prevent the pure water from flowing back to the reverse osmosis filter 620 and to maintain the pressure in the pipeline when the second faucet is closed.

[0049] The working principle of the water purification system is now described in detail. Figure 1As shown, after the tap water is filtered by the pre-filter 800, it passes through the pre-control valve 110 and then enters the booster pump 310. The air can enter the air intake branch 200, and after passing through the first one-way valve 210, it is mixed with the water passing through the pre-control valve 110 and enters the booster pump 310. After the booster pump 310, the water path is divided into two paths, one of which passes through the water inlet control valve 610 to reach the reverse osmosis filter 620, and the reverse osmosis filter 620 can separate pure water and concentrated water. The concentrated water passes through the flushing control valve 630 and is discharged from the concentrated water outlet to the sewer, while the pure water passes through the third one-way valve 640 and then is filtered by the post-filter 700, and finally flows out from the second faucet. The other water after the booster pump 310 enters the gas-water mixing tank 320. The water after the gas-water mixing tank 320 is divided into two paths. One path passes through the second one-way valve 350 and the bubbler joint 360 and reaches the water outlet of the faucet. The other path passes through the drainage control valve 510 and merges with the water path after the flushing control valve 630 and is discharged from the concentrated water outlet to the sewer. The first high-pressure switch 370 is set on the water path after the second one-way valve 350 to detect the pressure of the water path after the second one-way valve 350. The second high-pressure switch 650 is set on the water path after the third one-way valve 640 to detect the pressure of the water path after the third one-way valve 640. In addition, a controller 331, such as a reed switch, is set at the bottom of the gas-water mixing tank 320 to sense whether the float 332 in the gas-water mixing tank 320 is at the lowest position.

[0050] When the user turns on the first faucet, the first high-pressure switch 370 installed on the waterway behind the second one-way valve 350 will detect that the pressure decreases to less than 0.5MPa. At this time, the control system will start the booster pump 310 to continuously perform the boosting operation. At the same time, the pre-control valve 110 will be opened, and the water inlet control valve 610 and the drain control valve 510 will be closed. At this time, the tap water will pass through the pre-filter 800 and the pre-control valve 110 to reach the booster pump 310 and the air-water mixing tank 320. In the air-water mixing tank 320, the water will overflow the mouth at the bottom of the outlet pipe, causing the float 332 to rise. Under the boosting effect of the booster pump 310, the pressure in the air-water mixing tank 320 will reach 0.3-0.5MPa, the air will be compressed, and at the same time, due to the increase in air pressure, the air will dissolve in the water and be discharged from the outlet through the outlet pipe together with the water. After the water containing dissolved air passes through the bubbler joint 360, the pressure thereof is reduced, and the air is precipitated from the water to form a large number of bubbles at the micron level, and finally microbubble water flows out from the water outlet of the faucet.

[0051] When the user turns off the first faucet, the first high-pressure switch 370 will detect that the pressure increases and is greater than 0.7 MPa. At this time, the control system will close the front control valve 110 and the water inlet control valve 610, and the drainage control valve 510 will be opened. Due to the suction capacity of the booster pump 310, air will enter from the air inlet, pass through the first check valve 210, enter the booster pump 310, and finally reach the air-water mixing tank 320. Since the booster pump 310 continuously inhales air into the air-water mixing tank 320, the water in the air-water mixing tank 320 will be discharged to the sewer through the outlet pipe of the air-water mixing tank 320 and the drainage control valve 510. At this time, the float 332 in the air-water mixing tank 320 will drop to the bottom of the air-water mixing tank 320 as the water level drops. After the controller 331 senses the float 332, it will turn off the booster pump 310 and the drainage control valve 510, so that the water system stops working.

[0052] When the user turns on the second faucet and turns off the first faucet, the second high-pressure switch 650 installed on the water path of the post-filter 700 will detect that the pressure of the water in this path is reduced. At this time, the control system will start the booster pump 310 to continuously increase the pressure. At the same time, the pre-control valve 110 and the water inlet control valve 610 on the water path will be opened, and the drainage control valve 510 will be closed. At this time, the water reaches the booster pump 310 after passing through the pre-filter 800 and the pre-control valve 110. The water pressurized by the booster pump 310 enters the reverse osmosis filter 620 after passing through the water inlet control valve 610, and the reverse osmosis filter 620 separates pure water and concentrated water. The concentrated water is discharged from the concentrated water outlet to the sewer after passing through the flushing control valve 630, while the pure water flows out from the second faucet after passing through the post-filter 700.

[0053] Preferably, when the user needs to use domestic water for a long time, the gas in the air-water mixing tank 320 will be gradually consumed as it dissolves in the water. For example, after 10 minutes, there will be no microbubbles in the domestic water. In order to continuously take domestic water with microbubbles, the system will close the front control valve 110 after taking domestic water for 10 minutes, and close the water inlet control valve 610 and the drainage control valve 510 at the same time. At this time, due to the suction effect of the booster pump 310, air will enter through the air inlet, pass through the first one-way valve 210, and enter the air-water mixing tank 320 under the boosting effect of the booster pump 310, and the water in the air-water mixing tank 320 will be pressed out from the outlet of the air-water mixing tank 320, and finally discharged from the faucet outlet. At the same time, as the water in the gas-water mixing tank 320 is discharged and the water level drops, the float 332 will drop to the bottom of the gas-water mixing tank 320. After the sensor senses the float 332, it will open the front control valve 110 again to allow water to pass through, and then compress the gas in the gas-water mixing tank 320 and discharge it from the faucet in the form of microbubble water, and the cycle will continue.

[0054] The present invention also proposes a water purifier (not shown), which includes the water system. The specific structure of the water system refers to the above-mentioned embodiment. Since the water purifier proposed in this application adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0055] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A waterway system, characterized in that: include: A water inlet waterway, wherein the water inlet waterway has a raw water interface and a front control valve is arranged on the water inlet waterway; Intake branch; An air-water mixing tank, the water inlet waterway and the air inlet branch are both connected to the air-water mixing tank, and the air-water mixing tank is also provided with an outlet for the mixed air water to flow out; An air-water mixing branch, wherein the air-water mixing branch is provided with a booster pump and the air-water mixing tank in sequence in the direction of water flow; and, A parallel branch is provided with a parallel control valve, and the parallel branch has a first water inlet and a first water outlet, the first water inlet is connected to the raw water interface, and the first water outlet is connected to the water outlet of the gas-water mixing tank.

2. The waterway system according to claim 1, characterized in that: The water inlet waterway and the air inlet branch are connected to the same position of the air-water mixing branch.

3. The waterway system according to claim 2, characterized in that: The top of the gas-water mixing tank is provided with a water inlet and a water outlet, the booster pump is connected to the water inlet of the gas-water mixing tank, the gas-water mixing tank comprises a first water outlet pipe, and the first water outlet pipe extends through the water outlet of the gas-water mixing tank to the bottom of the gas-water mixing tank.

4. The waterway system according to claim 3, characterized in that: The gas-water mixing tank further comprises a first water inlet pipe, and a water outlet of the first water inlet pipe is arranged close to the water inlet of the gas-water mixing tank.

5. The waterway system according to claim 3, characterized in that: The gas-water mixing tank further comprises a water level detection device for detecting the water level in the gas-water mixing tank, and the water level detection device is connected to the front control valve.

6. The waterway system according to claim 5, characterized in that: The water level detection device comprises a controller arranged at the bottom of the gas-water mixing tank and a float arranged in the gas-water mixing tank, and the controller is used to open the front control valve when the float is close to the bottom wall of the gas-water mixing tank.

7. The waterway system according to claim 1, characterized in that: The air intake branch is provided with a first one-way valve which conducts one-way flow in the air intake direction.

8. The waterway system according to claim 1, characterized in that: The gas-water mixing branch is also provided with a second one-way valve, which is located between the water outlet of the gas-water mixing tank and the first water outlet, and is unidirectionally conductive from the water outlet of the gas-water mixing tank to the first water outlet.

9. The waterway system according to claim 1, characterized in that: The water system also includes a drainage branch, on which a drainage control valve is provided. The drainage branch has a second water inlet and a second water outlet, and the second water inlet is connected to the water outlet of the air-water mixing tank.

10. The waterway system according to claim 9, characterized in that: The water system also includes a clean water branch, on which a water inlet control valve and a reverse osmosis filter are connected in sequence, and the reverse osmosis filter has a water inlet end, a pure water end and a waste water end, the water inlet end is connected to the water inlet control valve, and the waste water end is connected to the drain; The drain port is communicated with the second water outlet, so that the clean water branch and the drain branch share the drain port.

11. The waterway system according to claim 10, characterized in that: The pure water end of the reverse osmosis filter is sequentially connected with a third one-way valve and a post-filter along the water outlet direction.

12. A water purifier, characterized in that: The water purifier comprises the water system according to any one of claims 1 to 11.

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