A sensor faucet cartridge and faucet

Abstract

The utility model provides a kind of sensing faucet valve core and faucet, sensing faucet valve core includes: valve seat assembly is equipped with first water supply passage, second water supply passage and second water outlet passage;Valve seat assembly is further equipped with first water outlet passage and water stop surface, adjusting component is equipped with the water mixing passage that first water supply passage, second water supply passage and first water outlet passage are all connected;Pressure relief component is arranged at the lower end of valve seat assembly, and pressure relief component includes diaphragm piece, and back pressure chamber located at the back end of diaphragm piece;When diaphragm piece abuts water stop surface, first water outlet passage and second water outlet passage are in the state of separation;When diaphragm piece is separated from water stop surface, first water outlet passage and second water outlet passage are in the state of conduction. By being arranged at the lower end of valve seat assembly, the overall height of adjusting component is reduced, and by reducing the number of parts of adjusting component, the weight of adjusting component is reduced, so as to reduce the force of user to twist or swing control to drive adjusting component, so as to facilitate user control.

Description

Technical Field

[0001] This utility model relates to the field of faucet valve core technology, specifically to a sensor-type faucet valve core and faucet. Background Technology

[0002] Chinese patent document CN120292283A discloses a dual-control mixing faucet valve core and faucet. The dual-control mixing faucet valve core includes the following structure: a fixing component, which has a water supply channel and a second water outlet channel; and an adjusting component, which has an installation cavity in the fixing component; and an adjusting component, which has a manual mixing chamber, an electric mixing chamber, and a sealing part. By moving the adjusting component in the installation cavity, the manual mixing chamber, the electric mixing chamber, or the sealing part can be selectively connected to the water supply channel, allowing the dual-control mixing faucet valve core to switch between manual control mode, electric control mode, and closed mode. When the dual-control mixing faucet valve core is in closed mode, neither the manual control mode nor the electric control mode can control the water flow, thus avoiding the leakage of the faucet when the solenoid valve is damaged, as is the case in the prior art.

[0003] Its drawbacks are as follows: First, the aforementioned patent integrates a pressure relief chamber and matching sealing and flow guiding structures within the adjustment component. This design directly leads to a significant increase in the axial height of the adjustment component. As the core moving part of the valve core, the height of the adjustment component directly determines the minimum accommodating space of the mounting chamber within the fixed component, making it difficult to reduce the overall volume of the faucet valve core and hindering the miniaturization of the faucet design. Second, the increased axial height of the adjustment component inevitably results in a longer lever arm distance between the end of the control element and the horizontal axis of the adjustment component. According to the lever principle, assuming constant frictional resistance between the adjustment component and the mounting chamber and a constant length of the control element, the lever arm distance is positively correlated with the force required for operation. That is, the higher the adjustment component, the greater the force required for the user to twist or swing the control element to drive the adjustment component to switch modes, which is detrimental to user operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a sensor-type faucet valve core and faucet to solve the problems mentioned in the background section above.

[0005] This utility model is achieved through the following technical solution: A sensor-type faucet valve core includes: A valve seat assembly, wherein the valve seat assembly is provided with a first water supply channel, a second water supply channel, a first water outlet channel, a second water outlet channel, and a water-stopping surface; The valve housing, wherein the valve seat assembly is closed with the valve housing to form an installation chamber; An adjustment component is built into the mounting chamber. By moving the adjustment component, the faucet valve core can be switched between manual control mode and sensor mode. The regulating component is provided with a mixing chamber, which is connected to the first water supply channel, the second water supply channel and the first water outlet channel; A pressure relief assembly is disposed at the lower end of the valve seat assembly. The pressure relief assembly includes a diaphragm and a back pressure chamber located at the back end of the diaphragm. When the diaphragm abuts against the water-stopping surface, the first water outlet channel and the second water outlet channel are in a state of isolation, and the water flow fills the back pressure chamber and keeps the diaphragm abutting against the water-stopping surface. When the diaphragm detaches from the water-stopping surface, the first water outlet channel and the second water outlet channel are in a conductive state, allowing water to flow through the first water outlet channel into the second water outlet channel and then out.

[0006] Furthermore, the pressure relief assembly also includes a solenoid valve, a pressure relief channel, and a transition chamber. The back pressure chamber is connected to the first water outlet channel, the transition chamber is connected to the back pressure chamber, and the pressure relief channel is connected to the second water outlet channel. The solenoid valve is used to isolate or open the pressure relief channel. The ratio of the cross-sectional area of ​​the second water outlet channel to the pressure relief channel is 3:1 to 9:1. When the solenoid valve disconnects the pressure relief channel, the water flow in the first outlet channel fills the back pressure chamber and the transition chamber, and keeps the diaphragm in contact with the water-stopping surface. When the solenoid valve opens the pressure relief channel, the water in the back pressure chamber flows out through the transition chamber and the pressure relief channel in sequence, causing the diaphragm to detach from the water-stopping surface.

[0007] Furthermore, the pressure relief assembly also includes a support, the diaphragm, and a separator. The diaphragm is sleeved on the outside of the support, and the separator is located at the lower end of the diaphragm, forming the back pressure chamber when closed with the diaphragm. The solenoid valve is located at the lower end of the separator, forming the transition chamber when closed with the diaphragm. The diaphragm has a conduit portion communicating with the second water outlet channel, and the internal cavity of the conduit portion constitutes the pressure relief channel. The support has a guide hole communicating with the first water outlet channel and the back pressure chamber, through which water from the first water outlet channel enters the back pressure chamber. The separator has at least one inlet and one outlet, both communicating with the back pressure chamber and the transition chamber.

[0008] Furthermore, the pressure relief assembly also includes a spring having a straight segment embedded in the guide hole.

[0009] Furthermore, the pressure relief assembly also includes a seal, the inner circumference of which seals against the outer circumferential surface of the conduit portion.

[0010] Furthermore, the adjustment component is also provided with a water-blocking part. By moving the adjustment component, the docking area between the water-blocking part and the first water supply channel and the second water supply channel is changed, thereby adjusting the water flow rate. The water-blocking part also divides the lower end face of the mixing chamber into a manual water inlet and a sensor water inlet. When the faucet valve core is in sensing mode, the sensing water inlet is connected to the first water supply channel and the second water supply channel; When the faucet valve core is in manual control mode, the manual control inlet is connected to the first water supply channel and the second water supply channel.

[0011] Furthermore, it also includes a control element, which moves the adjustment assembly within the mounting chamber by oscillating the control element; When the swing angle of the control component is the first angle, the induction water inlet has the maximum communication area with the first water supply channel and the second water supply channel. When the swing angle of the control component is the second angle, the water-blocking part has the maximum docking area with the first water supply channel and the second water supply channel, and the faucet valve core is in manual control mode to output water. When the swing angle of the control component is the third angle, the hand-controlled water inlet has the maximum communication area with the first water supply channel and the second water supply channel. The first angle, the second angle, and the third angle increase sequentially.

[0012] Furthermore, the first water supply channel and the second water supply channel are arranged symmetrically about the central axis of the valve seat assembly, the second water outlet channel is arranged on the central axis of the valve seat assembly, the first water outlet channel is arranged on the side away from the second water outlet channel, the first water outlet channel is semi-circular, and one end of the second water outlet channel extends to the center of the semi-circle of the first water outlet channel.

[0013] A faucet, comprising a sensor-type faucet valve core as described in any of the preceding claims.

[0014] The beneficial effects of this utility model are as follows: By setting a pressure relief component and placing it at the lower end of the valve seat component, the overall height of the adjustment component is reduced. Furthermore, by reducing the number of parts in the adjustment component, the weight of the adjustment component is reduced, thereby reducing the force required for the user to twist or swing the control parts to drive the adjustment component, thus making it easier for the user to operate. Attached Figure Description

[0015] Figure 1 This is a perspective view of the sensor-type faucet valve core of this utility model.

[0016] Figure 2 Another perspective view of the sensor-type faucet valve core of this utility model Figure 3 This is an exploded view of the sensor-type faucet valve core of this utility model.

[0017] Figure 4 This is an exploded view of the pressure relief component of this utility model.

[0018] Figure 5 This is a centered cross-sectional view of the present invention in sensing mode.

[0019] Figure 6 This is a centered cross-sectional view of the present invention in manual control mode.

[0020] Figure 7 This is a schematic diagram of the water outlet channel of this utility model.

[0021] Figure 8 This is a schematic diagram illustrating the direction of water temperature adjustment in the faucet of this utility model.

[0022] Figure 9 This is a schematic diagram showing the position of the faucet of this utility model at the first angle, the second angle, and the third angle.

[0023] The above figures include the following reference numerals: 1. Valve seat assembly; 1A. First water supply channel; 1B. Second water supply channel; 1C. First water outlet channel; 1D. Second water outlet channel; 1E. Water-stopping surface; 11. Valve seat body; 12. Fixing component; 2. Valve housing; 2A. Mounting chamber; 3. Adjustment assembly; 3A. Mixing chamber; 3B. Water-blocking part; 31. Upper support; 311. Guide part; 312. Second elastic column; 32. Lower support; 4. Pressure relief assembly; 4A. Back pressure chamber; 4B. Pressure relief channel; 4C. Transition chamber; 4D. Guide hole; 4E. Water inlet; 4F. Water outlet; 41. Support; 42. Diaphragm; 421. Guide tube section; 43. Separator; 44. Spring; 441. Straight section; 45. Solenoid valve; 46. Seal; 47. Hall sensor; 5. Guide seat; 51. Rotating shaft; 52. Guide rail groove; 53. First elastic column; 6. Control component. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Reference Figures 1 to 9 As shown, a sensor-type faucet valve core includes: Valve seat assembly 1, wherein the valve seat assembly 1 is provided with a first water supply channel 1A, a second water supply channel 1B, a first water outlet channel 1C, a second water outlet channel 1D, and a water stop surface 1E; Valve housing 2, the valve seat assembly 1 and valve housing 2 are closed to form an installation chamber 2A; Adjustment component 3, which is built into the installation chamber 2A, allows the faucet valve core to switch between manual control mode and sensor mode by moving the adjustment component 3; The regulating component 3 is provided with a mixing chamber 3A, which is connected to the first water supply channel 1A, the second water supply channel 1B and the first water outlet channel 1C. Pressure relief assembly 4 is disposed at the lower end of valve seat assembly 1. Pressure relief assembly 4 includes diaphragm 42 and back pressure chamber 4A located at the back end of diaphragm 42. When the diaphragm 42 abuts against the water-stopping surface 1E, the first water outlet channel 1C and the second water outlet channel 1D are in a state of isolation, and the water flow fills the back pressure chamber 4A and keeps the diaphragm 42 abutting against the water-stopping surface 1E. When the diaphragm 42 detaches from the water-stopping surface 1E, the first water outlet channel 1C and the second water outlet channel 1D are in a conductive state, allowing water to flow through the first water outlet channel 1C into the second water outlet channel 1D and out.

[0026] The diaphragm 42 is preferably made of rubber, which utilizes the deformable properties of rubber to achieve the effect of sealing against the water-stopping surface 1E.

[0027] This invention reduces the overall height of the regulating component 3 by setting a pressure relief component 4 and placing the pressure relief component 4 at the lower end of the valve seat component 1. Furthermore, by reducing the number of parts in the regulating component 3, the weight of the regulating component 3 is reduced, thereby reducing the force required for the user to turn or swing the control component 6 to drive the regulating component 3, thus facilitating user operation.

[0028] The pressure relief assembly 4 also includes a solenoid valve 45, a pressure relief channel 4B, and a transition chamber 4C. The back pressure chamber 4A is connected to the first water outlet channel 1C, the transition chamber 4C is connected to the back pressure chamber 4A, and the pressure relief channel 4B is connected to the second water outlet channel 1D. The solenoid valve 45 is used to isolate or open the pressure relief channel 4B. The ratio of the cross-sectional area of ​​the second water outlet channel 1D to the pressure relief channel 4B is 3:1 to 9:1. When the solenoid valve 45 disconnects the pressure relief channel 4B, the water flow in the first water outlet channel 1C fills the back pressure chamber 4A and the transition chamber 4C, and keeps the diaphragm 42 in contact with the water stop surface 1E. When the solenoid valve 45 opens the pressure relief channel 4B, the water in the back pressure chamber 4A flows out through the transition chamber 4C and the pressure relief channel 4B in sequence, causing the diaphragm 42 to detach from the water stop surface 1E.

[0029] By arranging the various chambers and pipes, and setting the ratio of the cross-sectional area of ​​the second water outlet channel 1D to the pressure relief channel 4B to be 3:1 to 9:1, the cross-sectional area of ​​the pressure relief channel 4B can be reduced without affecting the water flow rate. This allows for a small-diameter design of the pressure relief channel 4B, which effectively reduces the sealing area of ​​the solenoid valve 45 on the pressure relief channel 4B. Compared to the solenoid valve 45, which does not need to directly block the water outlet channel, the reduction in sealing area significantly reduces the driving force requirement of the solenoid valve 45. This allows for the selection of a smaller, lower-power miniaturized solenoid valve 45, which is beneficial for the miniaturization design of the faucet valve core, making it suitable for various compact installation scenarios such as embedded and miniature types.

[0030] Reference Figures 3 to 6 As shown, the pressure relief assembly 4 includes a support 41, a diaphragm 42, and a separator 43. The diaphragm 42 is sleeved on the outside of the support 41. The separator 43 is located at the lower end of the diaphragm 42, and the separator 43 and the diaphragm 42 close together to form the back pressure chamber 4A. The solenoid valve 45 is located at the lower end of the separator 43, and the solenoid valve 45 and the diaphragm 42 close together to form the transition chamber 4C. The diaphragm 42 is connected to the second water outlet channel 1D. The conduit section 421 has an internal cavity that forms the pressure relief channel 4B. The support 41 is provided with a guide hole 4D that connects the first water outlet channel 1C and the back pressure chamber 4A. Water from the first water outlet channel 1C flows into the back pressure chamber 4A through the guide hole 4D. The separator 43 is provided with at least one water inlet hole 4E and one water outlet hole 4F. Both the water inlet hole 4E and the water outlet hole 4F connect the back pressure chamber 4A and the transition chamber 4C. The water pressure in the back pressure chamber 4A and the transition chamber 4C is balanced through the water inlet hole 4E and the water outlet hole 4F.

[0031] The pressure relief assembly 4 also includes a spring 44 disposed in the back pressure chamber 4A. Another function of the back pressure chamber 4A is that when the tap is closed quickly, the high-speed water flow will impact the pipe due to inertia, generating a high-pressure water hammer effect. Through the buffering effect of the spring 44 inside the back pressure chamber 4A and the water flow inside the back pressure chamber 4A, the huge fluctuation of water pressure caused when the water is turned on or off can be avoided as much as possible, thereby protecting the pipeline, significantly reducing the "bang" noise, and extending the service life of the pipeline. It is especially suitable for high-rise buildings or areas with unstable water pressure.

[0032] The spring 44 is provided with a straight segment 441 that is embedded in the guide hole 4D, so that the spring 44 can reciprocate through the guide hole 4D during the movement, avoiding the guide hole 4D from being blocked by impurities such as sand and gravel in the water, which would prevent the back pressure chamber 4A from entering water and thus cause it to fail.

[0033] The pressure relief assembly 4 also includes a seal 46, the inner circumference of which seals against the outer circumferential surface of the conduit portion 421. The seal 46 prevents water from flowing into the second outlet channel 1D from entering the back pressure chamber 4A, which could lead to leakage in the back pressure chamber 4A and cause the pressure relief assembly 4 to fail.

[0034] In order to achieve water temperature adjustment in manual and sensor modes, the adjustment component 3 is also provided with a water baffle 3B. By moving the adjustment component 3, the docking area between the water baffle 3B and the first water supply channel 1A and the second water supply channel 1B is changed, thereby adjusting the water flow rate. The water baffle 3B also divides the lower end face of the mixing chamber 3A into a manual water inlet and a sensor water inlet. Reference Figure 5 As shown, when the faucet valve core is in sensing mode, the sensing water inlet is connected to the first water supply channel 1A and the second water supply channel 1B. Reference Figure 6 As shown, when the faucet valve core is in manual control mode, the manual control water inlet is connected to the first water supply channel 1A and the second water supply channel 1B.

[0035] To facilitate user-driven movement or rotation of the adjustment assembly 3 within the mounting chamber 2A, a guide seat 5 and a control element 6 are also included. The guide seat 5 is rotatably connected to the valve housing 2 and has a guide groove 52. The adjustment assembly 3 has a guide portion 311 embedded in the guide groove 52. One end of the control element 6 passes through the valve housing 2 and is rotatably connected to the guide seat 5 via a rotating shaft 51. The other end of the control element 6 is embedded in the adjustment assembly 3. By swinging the control element 6, the adjustment assembly 3 can be moved within the mounting chamber 2A.

[0036] The first water supply channel 1A and the second water supply channel 1B are respectively connected to external hot and cold water pipes. When the control component 6 rotates, the control component 6 drives the guide seat 5 and the adjusting component 3 to rotate synchronously in the installation chamber. Figure 8 As shown, when the control element 6 rotates to the left, the connection area between the sensor inlet or the manual inlet and the first water supply channel 1A increases, while the connection area with the second water supply channel 1B decreases, thereby lowering the outlet water temperature. When the control element 6 rotates to the right, the outlet water temperature increases. This achieves the adjustment of the outlet water temperature.

[0037] To enable switching between manual and sensor modes, as well as adjusting the water flow rate, the following steps are required: When the swing angle of the control component 6 is the first angle, the induction water inlet has the maximum communication area with the first water supply channel and the second water supply channel 1B, and the water output of the induction mode is the maximum. As the swing angle of the control component 6 increases, the water output of the sensing mode gradually decreases. When the control component 6 swings to the second angle, the water blocking part 3B has the maximum docking area with the first water supply channel and the second water supply channel 1B, and water begins to flow out through the manual control mode. As the swing angle of the control component 6 continues to increase, the water output of the manual control mode gradually increases until the control component 6 swings to the third angle. At this time, the manual control inlet has the maximum communication area with the first water supply channel and the second water supply channel 1B, and the water output of the manual control mode is the maximum. Reference Figure 9 As shown, the first angle, the second angle, and the third angle increase sequentially.

[0038] Users can smoothly transition between "maximum water output in sensor mode → gradually decreasing water output in sensor mode → starting manual mode → gradually increasing water output in manual mode → maximum water output in manual mode" by simply swinging the control piece 6 with one hand, without the need for additional buttons or switches.

[0039] Preferably, the first angle is 0° and the third angle is less than 30°. Specifically, the first angle is 0°, the second angle is 13°, and the third angle is 23°. When the first angle is precisely set to 0°, the control element 6 naturally resets to obtain the maximum water flow in the sensing mode. When the control element 6 swings to its maximum of 23°, the maximum water flow in the manual control mode is obtained. The control element 6 does not protrude excessively from the faucet body, reducing space occupation.

[0040] A feedback structure is provided between the adjustment component 3 and the guide seat 5. This feedback structure uses tactile feedback to indicate to the user that the faucet valve core has been switched between manual and sensor modes. This tactile feedback intuitively informs the user that the mode switch has been completed, eliminating the need for visual observation and improving the comfort and satisfaction of using the product.

[0041] The feedback structure includes at least two first elastic pillars 53 and two second elastic pillars 312. The first elastic pillars 53 are provided on both sides of the guide rail groove 52. The adjustment component 3 is provided with a guide part 311 embedded in the guide rail groove 52. The guide part 311 is provided with second elastic pillars 312. Through the tactile sensation of the first elastic pillars 53 and the second elastic pillars 312 abutting against each other and deforming, the feedback faucet valve core completes the switching between manual control mode and sensor mode.

[0042] The first elastic post 53 and the second elastic post 312 are preferably made of rubber, and the deformation of the rubber material provides tactile feedback.

[0043] As shown in the figure, in other embodiments, the feedback structure can be: the spring pins and recessed structures respectively set on the adjustment component 3 and the guide seat 5 cooperate to provide feedback through the extension and retraction of the spring pins and recessed structures.

[0044] As a refined solution, the adjustment component 3 includes an upper support 31 and a lower support 32. The upper support 31 and the lower support 32 are closed to form a mixing chamber 3A with an opening at the lower end. The lower support 32 forms the water-blocking part 3B, and the upper support 31 forms the guide part 311. The split design facilitates processing and molding.

[0045] The valve seat assembly 1 includes a valve seat body 11 and a fixing member 12. The first water supply channel 1A, the second water supply channel 1B, and the second water outlet channel 1D are all vertically downward through the valve seat body 11, which facilitates the connection of external hot and cold water pipes, water outlet pipes, and other structures to the first water supply channel 1A, the second water supply channel 1B, and the second water outlet channel 1D, respectively. Compared with the faucet valve core in the prior art, the above channels of this utility model have a bend-free design, which is conducive to the miniaturization design of the faucet valve core.

[0046] The first water supply channel 1A and the second water supply channel 1B are arranged symmetrically about the central axis of the valve seat assembly 1. The second water outlet channel 1D is arranged on the central axis of the valve seat assembly 1. The first water outlet channel 1C is arranged on the side away from the second water outlet channel 1D. The first water outlet channel 1C is semi-circular, and one end of the second water outlet channel 1D extends to the center of the semi-circle of the first water outlet channel 1C.

[0047] By symmetrically arranging the first water supply channel 1A and the second water supply channel 1B around the central axis of the valve seat assembly 1, setting the second water outlet channel 1D along the central axis, and arranging the first water outlet channel 1C in a semi-circular fit with the second water outlet channel 1D extending to its center, the core channels form a compact and orderly layout around the central axis, maximizing the use of the internal space of the valve seat assembly 1, effectively compressing the overall volume of the faucet valve core, and achieving the goal of miniaturization. This design enables the faucet valve core to be adapted to space-constrained scenarios such as small-sized bathrooms, narrow-body faucets, and recessed installations.

[0048] To differentiate between the sensing mode and manual control mode of the faucet valve core, the faucet valve core also includes a sensing probe, a controller, and a sensing component; During the movement of the adjustment component 3 in the installation chamber 2A, when the adjustment component 3 moves to the first preset range, the sensing component sends a first control signal to the controller, causing the solenoid valve 45 to disconnect the first water outlet channel 1C and the second water outlet channel 1D. When the regulating component 3 moves to the second preset range, the sensing component sends a second control signal to the controller, causing the solenoid valve 45 to open the first water outlet channel 1C and the second water outlet channel 1D. When the adjustment component 3 moves to the third preset interval, the controller controls the sensor probe to start, and the sensor probe acquires the user's gesture and outputs it to the controller, so that the controller controls the solenoid valve 45 to isolate or open the first water outlet channel 1C and the second water outlet channel 1D.

[0049] The sensing probe can be an infrared sensor. When the user makes a hand gesture at the tip of the sensor, the infrared sensor quickly captures the dynamic gesture signal, generates a control signal, and transmits it to the controller. The controller then controls the solenoid valve 45 to open the first water outlet channel 1C and the second water outlet channel 1D, causing the faucet valve core to start dispensing water. When the infrared sensor captures another valid gesture, it generates another control signal and transmits it to the controller. The controller then controls the solenoid valve 45 to close the pressure relief channel 4B, shutting off the water flow from the faucet valve core.

[0050] As a specific embodiment of the sensing component: the sensing component includes a Hall sensor 47 and a magnet, one of the Hall sensor 47 and the magnet moving with the adjustment component 3, while the other component is fixed in position, for example, referring to... Figure 3 As shown, the Hall sensor 47 is placed in the adjustment assembly 3, and the magnet is placed in the guide seat 5; When the adjustment component 3 moves to the point where the Hall sensor 47 detects the magnet, the adjustment component 3 is in the second preset range. The Hall sensor 47 sends a control signal to the controller to control the solenoid valve 45 to open the first water outlet channel 1C and the second water outlet channel 1D. At this time, the faucet valve core is in the water outlet state of the above-mentioned manual control mode. When the adjustment component 3 moves to a point where the Hall sensor 47 can no longer detect the magnet, the adjustment component 3 is in the first preset range. The Hall sensor 47 sends a control signal to the controller to control the solenoid valve 45 to isolate the first water outlet channel 1C and the second water outlet channel 1D and place the magnet in the guide seat 5. At this time, the faucet valve core is in the water-off state of the above-mentioned manual control mode.

[0051] More specifically, when the swing angle of the control element 6 is within the range of the first angle to the second angle, the faucet valve core is in sensing mode; When the swing angle of the control element 6 is within the range of the second angle to the third angle, the faucet valve core is in manual control mode; When the swing angle of the control element 6 is equal to the third angle, the faucet valve core is in the manual control mode water shut-off state.

[0052] Reference Figures 4 to 7 As shown, during use, the first water supply channel 1A and the second water supply channel 1B are connected to external hot and cold water pipes, respectively. When the diaphragm 42 detaches from the water-stopping surface 1E, the hot and cold water enter the mixing chamber 3A through the first water supply channel 1A and the second water supply channel 1B, respectively, and then flow sequentially through the first water outlet channel 1C, the guide hole 4D, the back pressure chamber 4A, the water inlet hole 4E, and the pressure relief channel 4B, and finally flow out through the second water outlet channel 1D. At the same time, as the main water outlet path, the hot and cold water enter the mixing chamber 3A through the first water supply channel 1A and the second water supply channel 1B, mix, and the diaphragm 42 detaches from the water-stopping surface 1E. The water in the mixing chamber 3A flows through the first water outlet channel 1C and finally flows out through the second water outlet channel 1D. The water outlet paths are the same in both manual and sensor modes.

[0053] In this invention, the water flow path is the same in both manual and sensor modes, and the water flows through the same water channel. This design minimizes the resistance differences between the different flow channels in the two water outlet modes, so that the water flow in both modes is only affected by the characteristics of the same flow channel and water pressure. The test variable is singular and controllable. In contrast, in the prior art, due to the inherent structural differences between the two flow channels, even if other test conditions are the same, the manual flow rate is prone to deviating significantly from the sensor flow rate by more than 10%, resulting in significant fluctuations in the test results.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] In the description of this utility model, 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. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sensor-type faucet valve core, characterized in that, include: Valve seat assembly (1), the valve seat assembly (1) is provided with a first water supply channel (1A), a second water supply channel (1B), a first water outlet channel (1C), a second water outlet channel (1D) and a water stop surface (1E); The valve housing (2) and the valve seat assembly (1) are closed to form an installation chamber (2A); Adjustment component (3), which is built into the installation chamber (2A), allows the faucet valve core to switch between manual control mode and sensor mode by moving the adjustment component (3); The regulating component (3) is provided with a mixing chamber (3A), which is connected to the first water supply channel (1A), the second water supply channel (1B) and the first water outlet channel (1C); Pressure relief assembly (4), the pressure relief assembly (4) is disposed at the lower end of the valve seat assembly (1), the pressure relief assembly (4) includes a diaphragm (42) and a back pressure chamber (4A) located at the back end of the diaphragm (42). When the diaphragm (42) abuts against the water-stopping surface (1E), the first water outlet channel (1C) and the second water outlet channel (1D) are in a disconnected state, and the water flow fills the back pressure chamber (4A) and keeps the diaphragm (42) abutting against the water-stopping surface (1E). When the diaphragm (42) detaches from the water-stopping surface (1E), the first water outlet channel (1C) and the second water outlet channel (1D) are in a conductive state, allowing water to flow through the first water outlet channel (1C) into the second water outlet channel (1D) and out.

2. The sensor-type faucet valve core according to claim 1, characterized in that: The pressure relief assembly (4) further includes a solenoid valve (45), a pressure relief channel (4B), and a transition chamber (4C). The back pressure chamber (4A) is connected to the first water outlet channel (1C), the transition chamber (4C) is connected to the back pressure chamber (4A), and the pressure relief channel (4B) is connected to the second water outlet channel (1D). The solenoid valve (45) is used to disconnect or open the pressure relief channel (4B). The ratio of the cross-sectional area of ​​the second water outlet channel (1D) to the pressure relief channel (4B) is 3:1 to 9:

1. When the solenoid valve (45) disconnects the pressure relief channel (4B), the water flow in the first water outlet channel (1C) fills the back pressure chamber (4A) and the transition chamber (4C), and keeps the diaphragm (42) abutting the water stop surface (1E). When the solenoid valve (45) opens the pressure relief channel (4B), the water in the back pressure chamber (4A) flows out through the transition chamber (4C) and the pressure relief channel (4B) in sequence, causing the diaphragm (42) to detach from the water stop surface (1E).

3. A sensor-type faucet valve core according to claim 2, characterized in that: The pressure relief assembly (4) further includes a bracket (41), the diaphragm (42), and a separator (43). The diaphragm (42) is sleeved on the outside of the bracket (41). The separator (43) is located at the lower end of the diaphragm (42), and the separator (43) and the diaphragm (42) close together to form the back pressure chamber (4A). The solenoid valve (45) is located at the lower end of the separator (43), and the solenoid valve (45) and the diaphragm (42) close together to form the transition chamber (4C). The diaphragm (42) is provided with a connection to the second outlet. The water channel (1D) is connected to the conduit section (421), and the internal cavity of the conduit section (421) constitutes the pressure relief channel (4B); the bracket (41) is provided with a guide hole (4D) connecting the first water outlet channel (1C) and the back pressure chamber (4A), and the water from the first water outlet channel (1C) enters the back pressure chamber (4A) through the guide hole (4D); the partition (43) is provided with at least one water inlet hole (4E) and one water outlet hole (4F), and the water inlet hole (4E) and the water outlet hole (4F) are both connected to the back pressure chamber (4A) and the transition chamber (4C).

4. A sensor-type faucet valve core according to claim 3, characterized in that: The pressure relief assembly (4) also includes a spring (44) having a straight segment (441) embedded in the guide hole (4D).

5. A sensor-type faucet valve core according to claim 3, characterized in that: The pressure relief assembly (4) also includes a seal (46), the inner circumference of which seals against the outer circumferential surface of the conduit portion (421).

6. A sensor-type faucet valve core according to claim 1, characterized in that: The regulating component (3) is also provided with a water-blocking part (3B). By moving the regulating component (3), the docking area between the water-blocking part (3B) and the first water supply channel (1A) and the second water supply channel (1B) is changed, thereby adjusting the water flow rate. The water-blocking part (3B) also divides the lower end face of the mixing chamber (3A) into a manual water inlet and a sensor water inlet. When the faucet valve core is in sensing mode, the sensing water inlet is connected to the first water supply channel (1A) and the second water supply channel (1B); When the faucet valve core is in manual control mode, the manual control inlet is connected to the first water supply channel (1A) and the second water supply channel (1B).

7. A sensor-type faucet valve core according to claim 6, characterized in that: It also includes a control element (6) that moves the adjustment assembly (3) in the mounting chamber (2A) by swinging the control element (6); When the swing angle of the control component (6) is the first angle, the induction water inlet has the maximum communication area with the first water supply channel and the second water supply channel (1B). When the swing angle of the control component (6) is the second angle, at this time, the water blocking part (3B) has the maximum docking area with the first water supply channel and the second water supply channel (1B), and the faucet valve core is in manual control mode to output water. When the swing angle of the control component (6) is the third angle, the hand-controlled water inlet has the maximum communication area with the first water supply channel and the second water supply channel (1B). The first angle, the second angle, and the third angle increase sequentially.

8. A sensor-type faucet valve core according to claim 1, characterized in that: The first water supply channel (1A) and the second water supply channel (1B) are arranged symmetrically about the central axis of the valve seat assembly (1). The second water outlet channel (1D) is arranged on the central axis of the valve seat assembly (1). The first water outlet channel (1C) is arranged on the side away from the second water outlet channel (1D). The first water outlet channel (1C) is semi-circular, and one end of the second water outlet channel (1D) extends to the center of the semi-circle of the first water outlet channel (1C).

9. A faucet, characterized in that: Including a sensor-type faucet valve core as described in any one of claims 1 to 8.

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