A water purifier

Abstract

This application provides a water purifier, including a water circuit board, a faucet, an indicator light, and a detection element disposed within a water flow channel. The detection element includes a movable component; when the movable component is in a first state, it is stationary within the water flow channel, or it is in a first position; when the movable component is in a second state, it rotates within the water flow channel, or it is in a second position; and a sensing element disposed on the board. When water flows within the water flow channel, the movable component switches from the first state to the second state, and the sensing element transmits a sensing signal to activate the indicator light; when water stops flowing within the water flow channel, the movable component switches from the second state to the first state, and the indicator light turns off. This application detects the water flow within the water circuit board through the movement state and position of the movable component, and the indicator light on the faucet displays the water purifier's usage status to the user.

Description

Technical Field

[0001] This invention relates to the field of household water purification, and more particularly to a water purifier. Background Technology

[0002] Existing water purifiers can provide two different types of water: one is pre-filtered domestic water, suitable for washing vegetables, and the other is refined drinking water, which meets daily drinking needs, after the first pre-filter has passed through an RO filter. These dual-quality purifiers connect the pre-filtered water directly to the user's existing faucet. Most of these faucets lack a display function, making it difficult for users to visually assess the quality of the pre-filtered domestic water, a significant drawback of these products. Summary of the Invention

[0003] This application provides a water purifier that allows users to intuitively perceive the quality of water after primary coarse filtration, thereby improving their experience of using domestic water and achieving product upgrades.

[0004] This application provides a water purifier, including a water circuit board, the water circuit board including a board body and a water flow channel disposed in the board body, a faucet including an indicator light, a detection element disposed in the water flow channel, the detection element including a movable part, the movable part having a first state and a second state, when the movable part is in the first state, the movable part is stationary in the water flow channel, or the movable part is in a first position; when the movable part is in the second state, the movable part rotates in the water flow channel, or the movable part is in a second position, a sensing element disposed on the board body, when water flows in the water flow channel, the movable part switches from the first state to the second state, the sensing element transmits a sensing signal to turn on the indicator light; when water stops flowing in the water flow channel, the movable part switches from the second state to the first state, the indicator light turns off.

[0005] This application includes an indicator light on the faucet and a detection element within the water flow channel of the water circuit board. A sensing element, cooperating with the detection element, is mounted on the water circuit board. The detection element includes a movable component with two states: in the first state, the movable component is stationary within the water flow channel, or it is in a first position; in the second state, the movable component rotates within the water flow channel, or it is in a second position. When water flows within the water flow channel, the movable component switches from stationary to rotating, or moves from the first position to the second position. At this time, the movable component activates the sensing element, which transmits a sensing signal to the indicator light, turning it on. When the water flow stops, the movable component switches from rotating to stationary, or returns from the second position to the first position. At this time, the sensing element does not receive an activation indication, and the indicator light turns off. This application detects the water flow within the water circuit board by the movement state and position of the movable component, and the indicator light on the faucet identifies the water flow status accordingly, providing users with a display of the water purification process.

[0006] Furthermore, the water flow channel includes a locking part, the radial spacing of the locking part is smaller than the inner diameter of the water flow channel, and the detection element is installed on the locking part and coaxially arranged with the water flow channel.

[0007] Furthermore, the detection element includes a housing with water passage holes at both ends, and the movable part includes a rotating shaft and a magnetic block. The movable part is fixed inside the housing by the rotating shaft. When water flows in the water passage, the movable part rotates inside the housing under the action of the water flow, and the sensing element is induced by the magnetic block to emit the sensing signal.

[0008] Furthermore, the water passage includes a first passage, in which the locking part is provided. When the movable part is in the first state, the movable part is stationary inside the housing. When the movable part is in the second state, the movable part rotates inside the housing.

[0009] Furthermore, the water passage includes a water passage hole, the water passage hole is provided with the locking part, the detection element is installed at the water passage hole and is coaxially arranged with the water passage hole, the sensing element is arranged at the projection position of the water passage hole on the plate, and the sensing element and the detection element are aligned and installed.

[0010] Furthermore, the detection element includes a housing with water passage holes at both ends and an elastic element. The elastic element is disposed between the movable element and the bottom wall of the housing. When water flows in the water passage holes, the movable element squeezes the elastic element, and the movable element moves from the first position to the second position under the action of water flow. When there is no water flow in the water passage holes, the elastic element resets and pushes the movable element from the second position back to the first position.

[0011] Furthermore, the housing includes a bracket with a mounting hole, the movable component includes a mounting post with a magnetic induction element, the mounting post is inserted into the mounting hole, and the elastic element is sleeved on the outside of the mounting post and the mounting hole.

[0012] Furthermore, when the movable member is in the second state, the movable member presses against the elastic member, and the mounting post extends out of the mounting hole. At this time, the movable member is in the second position, and the sensing element is induced by the magnetic sensing element to emit the sensing signal. When the movable member is in the first state, the elastic member resets and drives the mounting post to retract back into the mounting hole. At this time, the movable member is in the first position.

[0013] Furthermore, the faucet is a digital display faucet, which includes a faucet stem and a water outlet cantilever connected to the faucet stem. The water outlet cantilever extends in a direction perpendicular to the faucet stem and has a display area, in which the indicator light is located; or, the faucet is a mechanical faucet, which includes a faucet body and the indicator light is arranged in a ring shape on the faucet body.

[0014] Furthermore, the water circuit board is provided with an installation port located in the water flow channel and a plug installed at the installation port, and the detection element is inserted into the water flow channel from the installation port.

[0015] The beneficial effects of this application are as follows:

[0016] 1. By installing a sensing element on the water circuit board and a detection element inside the water flow channel, the detection element includes a movable component with two states. In the first state, the movable component is stationary within the water flow channel, or it is in a first position. In the second state, the movable component rotates within the water flow channel, or it is in a second position. When water flows within the water flow channel, the movable component switches from stationary to rotating, or moves from the first position to the second position. At this time, the movable component activates the sensing element, which transmits a sensing signal to an indicator light, turning it on. When the water flow in the water flow channel stops, the movable component switches from rotating to stationary, or returns from the second position to the first position. At this time, the sensing element does not receive an activation indication, and the indicator light turns off. This application detects the water flow within the water circuit board by measuring the movement state and position of the movable component, and by installing an indicator light on the faucet to identify the water flow status, it can display the water purification usage status to the user.

[0017] 2. By setting a locking part with a radial spacing smaller than the inner diameter of the water flow channel, the detection element is set in the locking part and coaxially with the water flow channel. In this way, when the water flows in the water flow channel, even if the water flow is not large, the detection element is set coaxially with the water flow channel, which can ensure that the moving part is accurately subjected to force under the action of the water flow, thereby ensuring that the moving part can fully sense the water flow situation in the water flow channel.

[0018] 3. The water flow channel includes a first flow channel, and a locking part is set in the first flow channel. The movable part is set in a rotatable form with magnetic material. When water flows through the water flow channel, the movable part rotates with the water flow, thereby triggering the sensing element and turning on the indicator light.

[0019] 4. The water flow channel of the water circuit board includes water passage holes. The detection element is set at the water passage hole, which is connected to the inlet and outlet of the filter element. In this way, when the filter element connected to the water passage hole starts to work, there will definitely be water flowing at the water passage hole. The detection element is installed at the water passage hole, and the sensing element is set at the projection position of the water passage hole on the water circuit board body to ensure the alignment of the sensing element and the detection element, and further ensure the sensitivity of the sensing.

[0020] 5. The detection element includes an elastic element and a movable element. The cooperation between the elastic element and the movable element allows the detection element to move manually. When water flows through the water passage, the water compresses the elastic element, causing the movable element to move towards the sensing element. When in the second position, the movable element is within the sensing area of ​​the sensing element, ensuring the detection occurs and activating the indicator light. When no water flows through the water passage, the elastic element resets, causing the movable element to return from the second position to the first position, thus moving it out of the sensing area of ​​the sensing element, and the indicator light turns off. By observing the change in the position of the movable element under the action of water flow, the water flow situation within the water circuit board is identified.

[0021] 6. The faucet can be a digital display faucet or a mechanical faucet. When the faucet is a digital display faucet, it also includes a display area, and the indicator light can be directly set in the display area. When the faucet is a mechanical faucet, a ring light strip is set at the position of the faucet body. Since the faucet body of the mechanical faucet will definitely be set on the countertop, the ring light strip setting can also ensure the indication function of the indicator light. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is an assembly diagram of the water circuit board, detection element, and sensing element in Embodiment 1;

[0024] Figure 2 for Figure 1 Enlarged view of part A;

[0025] Figure 3 An exploded view of the detection element;

[0026] Figure 4 This is a cross-sectional schematic diagram of the water channel plate in Example 1;

[0027] Figure 5 for Figure 4 Enlarged view of part B;

[0028] Figure 6 This is a schematic diagram of the movable component in the first position according to Embodiment 2;

[0029] Figure 7 for Figure 6 Enlarged view of part C;

[0030] Figure 8 This is a schematic diagram of the movable part in the second position;

[0031] Figure 9 for Figure 8 Enlarged view of part C;

[0032] Figure 10 This is a cross-sectional schematic diagram of the water channel plate in Example 2;

[0033] Figure 11 for Figure 10 Enlarged view of part C;

[0034] Figure 12 An exploded view of the detection element;

[0035] Figure 13 This is a schematic diagram of a mechanical faucet.

[0036] Figure 14 This is a schematic diagram of a digital display faucet.

[0037] 100 Waterway plate, 110 Plate body, 120 Water flow channel, 121 Locking part, 1211 Positioning rib, 1212 Limiting rib, 1213 Supporting rib, 1214 Limiting rib, 122 First flow channel, 123 Water passage hole, 130 Installation port, 140 Plug.

[0038] 200 Detection element, 210 Moving part, 211 Rotating shaft, 212 Magnetic block, 213 Mounting post, 214 Mounting groove, 215 End cap, 216 Body, 220 Housing, 221 Water passage hole, 222 Bracket, 223 Mounting hole, 224 Top cover, 225 Cylinder, 230 Elastic element, 240 Sealing ring.

[0039] 300 sensing element,

[0040] 410 Digital display faucet, 411 Faucet handle, 412 Water outlet cantilever, 413 Display area, 420 Mechanical faucet, 421 Faucet body, 430 Indicator light. Detailed Implementation

[0041] like Figures 1-14 As shown, this application proposes a water purifier, including a water circuit board 100, the water circuit board 100 including a board body 110 and a water flow channel 120 disposed within the board body 110, a faucet, the faucet including an indicator light 430, and a detection element 200 disposed in the water flow channel 120. Inside, the detection element 200 includes a movable part 210, which has a first state and a second state. When the movable part 210 is in the first state, it is stationary within the water flow channel 120, or it is in a first position. When the movable part 210 is in the second state, it rotates within the water flow channel 120, or it is in a second position. A sensing element 300 is disposed on the plate 110. When water flows within the water flow channel 120, the movable part 210 switches from the first state to the second state, and the sensing element 300 transmits a sensing signal to turn on the indicator light 430. When the water stops flowing within the water flow channel 120, the movable part 210 switches from the second state to the first state, and the indicator light 430 turns off. The water circuit board 100 is provided with an installation port 130 located in the water flow channel 120 and a plug 140 installed at the installation port 130. The detection element 200 is inserted into the water flow channel 120 from the installation port 130.

[0042] This application includes an indicator light on the faucet and a detection element within the water flow channel of the water circuit board. A sensing element, cooperating with the detection element, is mounted on the water circuit board. The detection element includes a movable component with two states: in the first state, the movable component is stationary within the water flow channel, or it is in a first position; in the second state, the movable component rotates within the water flow channel, or it is in a second position. When water flows within the water flow channel, the movable component switches from stationary to rotating, or moves from the first position to the second position. At this time, the movable component activates the sensing element, which transmits a sensing signal to the indicator light, turning it on. When the water flow stops, the movable component switches from rotating to stationary, or returns from the second position to the first position. At this time, the sensing element does not receive an activation indication, and the indicator light turns off. This application detects the water flow within the water circuit board by the movement state and position of the movable component, and the indicator light on the faucet identifies the water flow status accordingly, providing users with a display of the water purification process.

[0043] The water flow channel 120 includes a locking portion 121, the radial spacing of which is smaller than the inner diameter of the water flow channel 120. The detection element 200 is mounted on the locking portion 121 and coaxially arranged with the water flow channel 120. By setting the locking portion with a radial spacing smaller than the inner diameter of the water flow channel, and placing the detection element in the locking portion and coaxially with the water flow channel, even if the water flow is small, the coaxial arrangement of the detection element with the water flow channel ensures that the moving part is accurately subjected to force under the action of the water flow, thereby ensuring that the moving part can fully sense the water flow situation in the water flow channel.

[0044] The faucet is a digital display faucet 410, which includes a faucet stem 411 and a water outlet cantilever 412 connected to the faucet stem 411. The water outlet cantilever 412 extends in a direction perpendicular to the faucet stem 411 and has a display area 413, in which an indicator light 430 is located. Alternatively, the faucet is a mechanical faucet 420, which includes a faucet body 421, in which the indicator light 430 is arranged in a ring shape on the faucet body 421. The faucet can be either a digital display faucet or a mechanical faucet. When the faucet is a digital display faucet, such as... Figure 13 As shown, the digital faucet also includes a display area, where indicator lights can be directly installed; when the faucet is a mechanical faucet, such as Figure 14 As shown, the mechanical faucet features a ring-shaped light strip at the faucet body. Since the faucet body is always mounted on a countertop, this ring-shaped light strip ensures the indicator light's effectiveness. The display area can serve as both the user's water dispensing area and a visual display of the water purifier's operation status.

[0045] It is understood that the water purifier of this application also includes a filter element assembly, and the water flow channel of the water circuit board is connected to the inlet and outlet of the filter element. The filter element assembly includes a pre-filter element in the form of PP cotton or carbon composite and an RO filter element. The water filtered by the pre-filter element can be used for domestic purposes such as washing vegetables, or it can enter the front end of the RO filter element as the raw water for the RO filter element. The water filtered by the RO filter element can be used as drinking water. The water flow channel of the water circuit board connects the outlet of the pre-filter element and the outlet of the RO filter element. It is understood that if the detection element is located in the water flow channel connecting the outlet of the pre-filter element, it can be used to detect and identify the water flow status of the pre-filter element, thereby displaying the domestic water usage status. If the detection element is located in the water flow channel connecting the outlet of the RO filter element, it can be used to detect and identify the water flow status of the RO filter element, thereby displaying the drinking water usage status.

[0046] Example 1

[0047] like Figures 1-5 As shown, in this embodiment, the detection element 200 includes a housing with water passage holes 221 at both ends. The movable part 210 includes a rotating shaft 211 and a magnetic block 212. The movable part 210 is fixed inside the housing 220 by the rotating shaft 211. When water flows in the water passage 120, the movable part 210 rotates inside the housing 220 under the action of the water flow. The sensing element 300 is sensed by the magnetic block 212 and emits the sensing signal. The water passage 120 includes a first passage 122, and the locking part 121 is provided in the first passage 122. When the movable part 210 is in the first state, the movable part 210 is stationary inside the housing. When the movable part 210 is in the second state, the movable part 210 rotates inside the housing 220.

[0048] In this embodiment, the movable component 210 includes a body 216, an end cap 215, and a rotating shaft 211. The body 216 is fan-shaped, and the rotating shaft 211 is located at both ends of the movable component 210, at the ends of the body 216 and the end cap 215, respectively. It can be understood that the movable component can also be a single piece, with the rotating shaft distributed at both ends of the single-piece movable component. The body 216 has a mounting groove 214, the magnet 212 is mounted in the mounting groove 214, and the end cap 215 is located above the mounting groove 214. The housing 220 includes an upper cover 224 and a cylindrical body 225. The movable component 210 is installed inside the cylindrical body 225, and the upper cover 224 covers the cylindrical body 225. Water passage holes are provided on the cylindrical body 225 and the upper cover 224, respectively. When water flows through the first flow channel, the water enters and exits the cylindrical body through the water passage holes, driving the movable component to rotate. The rotating shaft is located at both ends of the movable component. The rotation axis of the rotating shaft 211 is parallel to or coincides with the central axis of the first flow channel 122. Preferably, the rotation axis of the rotating shaft coincides with the central axis of the first flow channel, thereby ensuring a balanced water flow around the rotating shaft and a balanced force on each fan blade, while also improving the driving effect on the movable component. In this embodiment, to ensure the stable installation of the detection element within the first flow channel, a sealing ring 240 is provided on the outer side of the cylinder 225 to stabilize the installation of the detection element. Simultaneously, it isolates the gap between the housing of the detection element and the first flow channel, preventing water from flowing between the housing and the inner wall of the first flow channel, further ensuring sufficient water flow within the detection element and ensuring the trigger sensitivity of the movable component to the sensing element.

[0049] In this embodiment, the locking part 121 includes positioning ribs 1211 and limiting ribs 1212. Multiple limiting ribs 1212 and positioning ribs 1211 are provided within the first flow channel 122, with the limiting ribs extending axially along the first flow channel and surrounding the central axis of the first flow channel 122. Positioning ribs 1211 are respectively and correspondingly disposed at the ends of each limiting rib 1212. Preferably, the limiting ribs 1212 and positioning ribs 1211 are integrally formed. When the detection element is installed in place, the end of the housing 220 abuts against the positioning rib 122, facilitating quick installation and positioning.

[0050] In this embodiment, the sensing element 300 is a Hall element, which is disposed on the water channel plate and aligned with the detection element. The two poles of the magnet 212 are located on both sides of the rotation axis of the rotating shaft. When the moving part rotates, the two poles of the magnet alternately approach the Hall element to trigger the Hall element.

[0051] When a user takes water from the tap, the water flows in the first flow channel, and the moving part rotates due to the push of the water. The rotating moving part triggers the sensing element, which then turns on the indicator light. The tap reminds the user that they are using this type of water by illuminating the indicator light. When the user stops using water, the water in the first flow channel stops flowing, the moving part stops rotating, and the sensing element is no longer triggered, causing the indicator light to turn off.

[0052] Example 2

[0053] like Figures 6-12 As shown, in this embodiment, the water flow channel 120 includes a water passage hole 123, and the water passage hole 123 is provided with the locking part 121. The detection element 200 is installed at the water passage hole 123 and is coaxially arranged with the water passage hole 123. The sensing element 300 is disposed at the projection position of the water passage hole 123 on the plate body 110, and the sensing element 300 and the detection element 200 are aligned and installed. The water flow channel of the water circuit board includes a water passage hole, and the detection element is disposed at the water passage hole. The water passage hole is connected to the inlet and outlet of the filter element. In this way, when the filter element connected to the water passage hole starts to work, there will definitely be water flowing at the water passage hole. By installing the detection element at the water passage hole and setting the sensing element at the projection position of the water passage hole on the water circuit board body, the alignment of the sensing element and the detection element is ensured, further ensuring the sensitivity of the sensing.

[0054] In this embodiment, the water flow channel of the water circuit board is provided with an annular rib extending upward to form a water passage hole. The water outlet hole of the filter element in the water purifier communicates with the water passage hole. The detection element 200 is embedded in the annular rib and coaxially arranged with the annular rib. When the detection element is installed in place, the annular rib limits and protects the detection element at the water passage hole, ensuring that the detection element is installed firmly. The annular rib is provided with a locking part 121, which includes multiple support ribs 1213 and limiting ribs 1214. The support ribs are strip-shaped and extend along the axial direction of the annular rib. The multiple support ribs are arranged around the central axis of the annular rib. The outer periphery of the housing of the installed detection element abuts against the support rib 1213, thereby effectively limiting the detection element and preventing radial movement. The limiting ribs 1214 are set one-to-one at the bottom of each supporting rib 12132. Preferably, the limiting ribs and supporting ribs are set as one piece. When the detection element is installed in place, the bottom of the detection element will abut against the limiting rib, which facilitates quick installation and positioning. When the water purifier is working, it can effectively prevent the detection element from moving axially along the annular rib under the impact of water flow.

[0055] The detection element 200 includes a housing 220 with water passage holes 221 at both ends and an elastic element 230. The elastic element 230 is located between the movable element 210 and the bottom wall of the housing 220. When water flows through the water passage hole 123, the movable element 210 squeezes the elastic element 230, causing the movable element 210 to shift from the first position to the second position under the action of the water flow. When there is no water flow in the water passage hole 123, the elastic element 230 resets and pushes the movable element 210 back from the second position to the first position. The detection element includes an elastic element, and the cooperation between the movable element and the elastic element allows the detection element to perform displacement movement. When water flows through the water passage hole, the water squeezes the elastic element, causing the movable element to move towards the sensing element. When it is in the second position, the movable element is within the sensing area of ​​the sensing element, ensuring the occurrence of the sensing phenomenon and thus turning on the indicator light. When there is no water flow through the water passage hole, the elastic element resets, causing the movable element to return from the second position to the first position, thus leaving the sensing area of ​​the sensing element, and the indicator light turns off. The water flow within the water circuit board can be identified by observing the positional changes of moving parts under the influence of water flow.

[0056] The housing 220 includes a bracket 222 with a mounting hole 223. The movable member 210 includes a mounting post 213 with a magnetic induction element. The mounting post 213 is inserted into the mounting hole 223, and the elastic member 230 is sleeved on the outside of the mounting post 213 and the mounting hole 223. When the movable member 210 is in the second state, it compresses the elastic member 230, and the mounting post 213 extends out of the mounting hole 223. At this time, the movable member 210 is in the second position, and the sensing element 300 is induced by the magnetic induction element to emit a sensing signal. When the movable member 210 is in the first state, the elastic member 230 resets and causes the mounting post 213 to retract back into the mounting hole 223. At this time, the movable member 210 is in the first position. The magnetic induction element is a magnet, which is located at the bottom end of the mounting post. In this embodiment, a sealing ring 240 is provided on the outer side of the housing. The sealing ring 240 protrudes and abuts against the inner wall of the water passage hole.

[0057] In this embodiment, when the user takes water, the water flow pushes the movable part to move, causing the mounting post to extend out of the mounting hole. At this time, the magnet at the bottom of the mounting post enters the sensing area of ​​the sensing element, and the indicator light turns on. When the user stops taking water, the movable part resets, the mounting post retracts into the mounting hole, and the magnet at the bottom of the mounting post exits the sensing area of ​​the sensing element, and the indicator light turns off.

Claims

1. A water purifier, characterized in that, include: Water channel board, the water channel board includes a board body and water flow channels disposed within the board body, The faucet includes an indicator light. A detection element is disposed within the water flow channel. The detection element includes a movable component, which has a first state and a second state. When the movable part is in the first state, the movable part is stationary in the water passage, or the movable part is in the first position; When the movable component is in the second state, it rotates within the water flow channel; or, the movable component is in the second position. A sensing element, disposed on the plate, is activated when water flows through the water channel. When the movable component switches from the first state to the second state, the sensing element transmits a sensing signal to turn on the indicator light; when the water in the water passage stops flowing, the movable component switches from the second state to the first state, and the indicator light turns off. The water passage includes a water passage hole, and the detection element includes a housing with water passage holes at both ends and an elastic element. The elastic element is disposed between the movable element and the bottom wall of the housing. When water flows in the water passage hole, the movable element squeezes the elastic element, and the movable element moves from the first position to the second position under the action of water flow. When there is no water flow in the water passage hole, the elastic element resets and pushes the movable element from the second position back to the first position. The housing includes a bracket with mounting holes. The movable component includes a mounting post with a magnetic induction element. The mounting post is inserted into the mounting hole, and the elastic element is sleeved on the outside of the mounting post and the mounting hole. When the movable member is in the second state, the movable member presses the elastic member, and the mounting post extends out of the mounting hole. At this time, the movable member is in the second position, and the sensing element is induced by the magnetic sensing element to emit the sensing signal. When the movable member is in the first state, the elastic member resets and drives the mounting post to retract back into the mounting hole. At this time, the movable member is in the first position.

2. The water purifier according to claim 1, characterized in that, The water passage includes a locking part, the radial spacing of the locking part is smaller than the inner diameter of the water passage, and the detection element is installed on the locking part and coaxially arranged with the water passage.

3. The water purifier according to claim 2, characterized in that, The detection element includes a housing with water passage holes at both ends. The movable part includes a rotating shaft and a magnetic block. The movable part is fixed inside the housing by the rotating shaft. When water flows in the water passage, the movable part rotates inside the housing under the action of the water flow. The sensing element is induced by the magnetic block and emits the sensing signal.

4. The water purifier according to claim 3, characterized in that, The water passage includes a first passage, and the locking part is provided in the first passage. When the movable part is in the first state, the movable part is stationary in the housing. When the movable part is in the second state, the movable part rotates in the housing.

5. The water purifier according to claim 2, characterized in that, The water passage hole is provided with the locking part, the detection element is installed at the water passage hole and is coaxially arranged with the water passage hole, the sensing element is arranged at the projection position of the water passage hole on the plate body, and the sensing element and the detection element are aligned and installed.

6. The water purifier according to any one of claims 1-5, characterized in that, The faucet is a digital display faucet, which includes a faucet stem and a water outlet arm connected to the faucet stem. The water outlet arm extends in a direction perpendicular to the faucet stem and has a display area, in which the indicator light is located. Alternatively, the faucet is a mechanical faucet, which includes a faucet body and the indicator light is arranged in a ring shape on the faucet body.

7. The water purifier according to any one of claims 1-5, characterized in that, The water circuit board is provided with an installation port located in the water flow channel and a plug installed at the installation port. The detection element is inserted into the water flow channel through the installation port.

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