Water inlet system with detergent putting function and washing machine

Abstract

The utility model discloses a water inlet system with a detergent putting function and a washing machine, comprising: a connector comprising a confluence shell, and a water inlet joint, a water outlet joint and a liquid inlet joint which are respectively connected with the confluence shell, and a confluence cavity is formed in the confluence shell; the water inlet joint and the water outlet joint are respectively connected with a water inlet pipe and a water outlet pipe; the detergent conveying pump is used for pumping detergent; the liquid inlet end of the check valve is connected with the detergent conveying pump, the liquid outlet end of the check valve is connected with the liquid inlet connector, and the check valve is opened in one direction from the detergent conveying pump to the confluence shell so that the detergent conveying pump can pump detergent into the confluence cavity; wherein the check valve comprises a liquid outlet and a valve element capable of blocking the liquid outlet when the valve element is closed, and the liquid outlet extends into the confluence cavity, so that the detergent squeezed out of the liquid outlet can be mixed in water in the confluence cavity. When clean water is injected again for rinsing after one cleaning stage is completed, the problem of pollution caused by the fact that washing agents are mixed into rinsing water can be avoided, and the washing effect and the user experience are optimized.

Description

Technical Field

[0001] This application relates to the technical field of washing machines, and more particularly to a water inlet system with detergent dispensing function and a washing machine. Background Technology

[0002] In the current field of home appliance technology, some washing machines are equipped with intelligent devices that automatically add detergent, aiming to improve washing convenience and efficiency. These washing machines use a built-in detergent container cleverly connected to the water inlet line to achieve automatic detergent dispensing during the washing process. When the washing machine starts, the detergent is automatically added from the container into the water inlet line, and then enters the washing drum along with the water, effectively reducing the tedious manual detergent addition by the user.

[0003] However, despite the significant convenience this technology brings, some problems have also emerged in practical applications. Particularly during the water inlet stop phase of the washing machine, some detergent often remains in the detergent outlet pipe. When a washing cycle is completed and clean water is added again for the rinsing stage, the restarted water inlet process can accidentally draw this remaining detergent into the rinsing water. This contaminates the rinsing water again due to the added detergent, affecting washing performance and user experience. Therefore, effectively preventing accidental detergent contamination during the rinsing stage has become a pressing technical challenge for current automatic detergent dispensing technology in washing machines. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a water inlet system and washing machine with detergent dispensing function, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a water inlet system with detergent dispensing function is provided, including:

[0007] The connector includes a manifold housing and an inlet connector, an outlet connector, and a liquid inlet connector respectively connected to the manifold housing. The manifold housing forms a manifold cavity inside. The inlet connector and the outlet connector are respectively connected to an inlet pipe and an outlet pipe.

[0008] Detergent delivery pump, used for pumping detergent;

[0009] A check valve has its inlet end connected to the detergent delivery pump and its outlet end connected to the inlet connector. The check valve opens unidirectionally from the detergent delivery pump toward the manifold, so as to enable the detergent delivery pump to pump detergent into the manifold.

[0010] The check valve includes an outlet and a valve core that can block the outlet when closed. The outlet extends into the manifold, allowing the detergent squeezed out from the outlet to mix with the water in the manifold.

[0011] Optionally, the check valve includes a valve body and a return spring. The valve body has a delivery channel, and the port of the delivery channel located within the manifold forms the outlet. The valve core includes a valve stem and a valve head connected to the end of the valve stem. The valve stem is located in the delivery channel and connected to the return spring. When the detergent delivery pump dispenses detergent, the detergent pushes the valve head, causing the valve stem to overcome the elastic force of the return spring and open the outlet. When the detergent delivery pump stops dispensing detergent, the return spring causes the valve stem and valve head to return to their original positions, thus blocking the outlet.

[0012] Optionally, the valve head is configured as a ball head, and the valve housing is provided with a corresponding hemispherical groove at one end near the liquid outlet.

[0013] Optionally, the infusion channel includes a first channel segment and a second channel segment, wherein the radial dimension of the second channel segment is larger than that of the first channel segment, such that the end of the second channel segment connected to the first channel segment forms a limiting stepped surface; the valve stem includes a rod body and a tail seat, wherein the tail seat is located in the second channel segment, one end of the rod body is connected to the tail seat, and the other end extends to the first channel segment and is connected to the valve head; the return spring is sleeved on the rod body, and the two ends of the return spring abut against the limiting stepped surface and the tail seat respectively.

[0014] Optionally, the rod and the tailstock are an integral structure, and the rod is assembled and connected to the valve head.

[0015] Optionally, the outer diameter of the tailstock corresponds to the radial dimension of the second channel segment, and the outer diameter of the rod corresponds to the radial dimension of the first channel segment, so that the infusion channel can guide the linear movement of the valve core; moreover, the outer wall of the valve rod is provided with multiple infusion grooves, which are used to provide a flow channel for detergent.

[0016] Optionally, the check valve further includes an adapter, which is connected to one end of the valve housing near the second channel section, and the other end of the adapter away from the valve housing is connected to the detergent delivery pump. Optionally, the adapter has insertion ends at both ends, with one insertion end inserted into the second channel section and the other insertion end inserted into the delivery tube of the detergent delivery pump.

[0017] Optionally, the valve housing is provided with an extension at one end near the liquid outlet, the valve housing is sealed to the liquid inlet connector, and the extension extends into the manifold, so that the liquid outlet is placed in the manifold.

[0018] On the other hand, a washing machine is provided, including the aforementioned water inlet system with detergent dispensing function.

[0019] The beneficial effects of this application are as follows: This utility model provides a detergent dispensing device that can be applied to a washing machine to realize the functions of water intake and automatic detergent dispensing. During water intake, tap water flows in from the inlet pipe, passes through the manifold of the connector, and then flows into the washing drum through the outlet pipe. When detergent needs to be added, the detergent delivery pump is started, and the detergent is delivered to the manifold through the check valve. The flowing water flushes away the detergent in the manifold and sends it into the washing drum. When the detergent delivery pump stops, the check valve automatically closes to prevent the water from mixing with the detergent in the check valve. In this design, the outlet of the check valve extends into the manifold, and when closed, the outlet is completely blocked by the valve core. This allows the water to fully flush away any detergent outside the outlet when detergent is added, and when detergent addition stops, the valve core effectively isolates the water from the detergent, preventing contamination of the water. Therefore, in practical applications, when a washing stage is completed and clean water is added again for rinsing, the problem of detergent mixing into the rinsing water and causing pollution can be avoided, thus optimizing the washing effect and user experience. Attached Figure Description

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the water inlet system with detergent dispensing function described in the embodiments of this application;

[0022] Figure 2 This is an exploded schematic diagram of the water inlet system with detergent dispensing function described in the embodiments of this application;

[0023] Figure 3 This is a cross-sectional view of the connector and the check valve described in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the connector structure described in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the check valve described in the embodiments of this application;

[0026] Figure 6 This is an explosion diagram of the check valve described in the embodiments of this application;

[0027] Figure 7This is a cross-sectional view of the check valve in an explosion state as described in the embodiments of this application.

[0028] In the picture:

[0029] 1. Connector; 11. Manifold housing; 12. Inlet connector; 13. Outlet connector; 14. Liquid inlet connector; 2. Check valve; 21. Valve housing; 211. Extension; 2111. Liquid outlet; 212. First channel section; 213. Second channel section; 2131. Limiting stepped surface; 214. Hemispherical groove; 22. Valve core; 221. Valve stem; 2211. Stem body; 2212. Tailstock; 2213. Liquid infusion tank; 222. Valve head; 23. Return spring; 24. Adapter; 241. Insertion end; 3. Detergent delivery pump. Detailed Implementation

[0030] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the current field of home appliance technology, some washing machines are equipped with intelligent devices that automatically add detergent, aiming to improve washing convenience and efficiency. These washing machines use a built-in detergent container cleverly connected to the water inlet line to achieve automatic detergent dispensing during the washing process. When the washing machine starts, the detergent is automatically added from the container into the water inlet line, and then enters the washing drum along with the water, effectively reducing the tedious manual detergent addition by the user.

[0034] However, despite the significant convenience this technology brings, some problems have also emerged in practical applications. Particularly during the water inlet stop phase of the washing machine, some detergent often remains in the detergent outlet pipe. When a washing cycle is completed and clean water is added again for the rinsing stage, the restarted water inlet process can accidentally draw this remaining detergent into the rinsing water. This contaminates the rinsing water again due to the added detergent, affecting washing performance and user experience. Therefore, effectively preventing accidental detergent contamination during the rinsing stage has become a pressing technical challenge for current automatic detergent dispensing technology in washing machines.

[0035] To overcome the above technical problems, refer to Figures 1-7 This embodiment provides a water inlet system with detergent dispensing function, including:

[0036] Connector 1 includes a manifold housing 11 and an inlet connector 12, an outlet connector 13, and a liquid inlet connector 14, which are respectively connected to the manifold housing 11. The manifold housing 11 forms a manifold cavity inside. The inlet connector 12 and the outlet connector 13 are respectively connected to an inlet pipe and an outlet pipe.

[0037] Detergent delivery pump 3 is used to pump detergent;

[0038] Check valve 2, with its inlet end connected to the detergent delivery pump 3 and its outlet end connected to the inlet connector 14, the check valve 2 is opened unidirectionally from the detergent delivery pump 3 to the manifold 11, so as to realize the detergent delivery pump 3 pumping detergent into the manifold.

[0039] The check valve 2 includes an outlet 2111 and a valve core 22 that can block the outlet 2111 when closed. The outlet 2111 extends into the manifold, so that the detergent squeezed out from the outlet 2111 can mix with the water in the manifold.

[0040] The water inlet system with detergent dispensing function provided in this embodiment can be applied to washing machines to achieve automatic water intake and detergent dispensing. In specific application, the inlet pipe is connected to a tap, the outlet pipe is connected to the washing drum, and the detergent delivery pump 3 is connected to the detergent storage box. During water intake, tap water flows in through the inlet pipe, passes through the manifold of connector 1, and then flows into the washing drum through the outlet pipe. When detergent needs to be added, the detergent delivery pump 3 is activated, and the detergent is delivered to the manifold through the check valve 2. The flowing water flushes away the detergent in the manifold and sends it into the washing drum. When the detergent delivery pump 3 stops, the check valve 2 automatically closes to prevent the water from mixing with the detergent in the check valve 2. In this design, the outlet 2111 of the check valve 2 extends into the manifold, and when closed, the outlet 2111 is completely blocked by the valve core 22. This ensures that when detergent is added, the incoming water can effectively flush away any detergent outside the outlet 2111, and when detergent addition stops, the valve core 22 effectively isolates the incoming water from the detergent, preventing contamination. Therefore, in practical applications, when rinsing with clean water after a washing cycle, the problem of detergent contamination in the rinsing water can be avoided, optimizing the washing effect and user experience.

[0041] When a washing machine starts its quick wash mode, it typically only performs one rinse cycle. This solution avoids the problem of detergent getting into the water during the rinsing process, thus ensuring the cleanliness after rinsing. Therefore, this solution is more effective in the quick wash mode.

[0042] In one embodiment, reference is made to Figures 5-7 The check valve 2 includes a valve housing 21 and a return spring 23. The valve housing 21 has a liquid delivery channel, and the port of the liquid delivery channel located in the manifold forms the liquid outlet 2111. The valve core 22 includes a valve stem 221 and a valve head 222 connected to the end of the valve stem 221. The valve stem 221 is located in the liquid delivery channel and connected to the return spring 23. When the detergent delivery pump 3 squeezes out detergent, the detergent pushes the valve head 222 to drive the valve stem 221 to overcome the elastic force of the return spring 23 to open the liquid outlet 2111. When the detergent delivery pump 3 stops squeezing out detergent, the return spring 23 drives the valve stem 221 and the valve head 222 to return to their original positions, so that the valve head 222 blocks the liquid outlet 2111.

[0043] In this embodiment, when the detergent delivery pump 3 starts, the pressure of the detergent pushes the valve head 222 to drive the valve stem 221 to overcome the elastic force of the return spring 23, automatically opening the outlet 2111. This automatic response mechanism requires no additional control signals or manual intervention, simplifying the system's control logic and improving the system's reliability and stability. When the detergent delivery pump 3 stops dispensing detergent, the return spring 23 drives the valve stem 221 and valve head 222 to reset, and the valve head 222 tightly seals the outlet 2111, ensuring that the outlet 2111 is completely closed when there is no detergent pumping. This effectively prevents the mixing of inlet water and detergent in the check valve 2, thereby ensuring the purity of the water used in the rinsing stage.

[0044] In one embodiment, the valve head 222 is configured as a ball head, and the valve housing 21 is provided with a corresponding hemispherical groove 214 at one end near the liquid outlet 2111.

[0045] In this embodiment, the ball-shaped valve head 222 and the hemispherical groove 214 can form a tight sealing surface. When the return spring 23 drives the valve head 222 to return to its original position, the ball head can be completely embedded in the hemispherical groove 214, effectively blocking the liquid outlet 2111, preventing water or detergent leakage, and ensuring the sealing performance of the system.

[0046] When subjected to detergent pressure, the ball-shaped valve head 222 can easily overcome the elastic force of the return spring 23 and move relative to the hemispherical groove 214, thereby opening the liquid outlet 2111. This design makes the opening and closing action of the valve head 222 smoother and reduces malfunctions caused by friction or jamming.

[0047] When the ball-shaped valve head 222 is opened, it allows the detergent to flow into the manifold more evenly. Due to the shape characteristics of the ball head, the detergent does not form a concentrated jet when it flows out, but can be more widely distributed in the water of the manifold, thus improving the mixing efficiency of the detergent.

[0048] The fit between the ball head and the hemispherical groove 214 reduces friction on the contact surface and lowers the risk of wear on the valve head 222 and valve body 21. This design enables the check valve 2 to maintain stable performance during long-term use and extends its service life.

[0049] In one embodiment, the infusion channel includes a first channel segment 212 and a second channel segment 213. The radial dimension of the second channel segment 213 is larger than that of the first channel segment 212, such that one end of the second channel segment 213 connected to the first channel segment 212 forms a limiting stepped surface 2131. The valve stem 221 includes a stem body 2211 and a tail seat 2212. The tail seat 2212 is located in the second channel segment 213. One end of the stem body 2211 is connected to the tail seat 2212, and the other end extends to the first channel segment 212 and is connected to the valve head 222. The return spring 23 is sleeved on the outside of the stem body 2211, and both ends of the return spring 23 abut against the limiting stepped surface 2131 and the tail seat 2212, respectively.

[0050] In this embodiment, one end of the rod 2211 is connected to the valve head 222, and the other end is connected to the tailstock 2212. The spring force of the return spring 23 is indirectly transmitted to the valve head 222 through the tailstock 2212 and the rod 2211, enabling the valve head 222 to quickly respond to the pumping pressure of the detergent or the spring force when pumping stops. The return spring 23 is sleeved on the outside of the rod 2211, and its two ends abut against the limiting stepped surface 2131 and the tailstock 2212 respectively. This design provides a stable spring support point. The limiting stepped surface 2131 is naturally formed by the difference in radial dimensions between the second channel segment 213 and the first channel segment 212, without the need for additional parts or processing steps, thus simplifying the structure.

[0051] In one embodiment, the rod 2211 and the tailstock 2212 are an integral structure, and the rod 2211 is assembled and connected to the valve head 222.

[0052] The rod body 2211 and tailstock 2212, which are integrally structured, can be formed in one process without additional connection steps such as welding or threaded connection. This simplifies the manufacturing process, reduces production costs, and improves production efficiency.

[0053] The rod body 2211 and valve head 222 are connected by assembly, which simplifies the assembly of the check valve 2. During assembly, the return spring 23 is placed over the rod body 2211, and the rod body 2211 is inserted forward into the second channel section 213. The valve head 222 is placed at the end where the liquid outlet 2111 is located, and the rod body 2211 and valve head 222 are then connected and fixed. Adhesive can be used for fixing during connection.

[0054] In one embodiment, the outer diameter of the tailstock 2212 corresponds to the radial dimension of the second channel segment 213, and the outer diameter of the rod 2211 corresponds to the radial dimension of the first channel segment 212, so that the infusion channel can guide the linear movement of the valve core 22; moreover, the outer wall of the valve rod 221 is provided with multiple infusion grooves 2213, which are used to provide a flow channel for detergent.

[0055] The radial dimensions of the tailstock 2212 and the second channel section 213, and the rod 2211 and the first channel section 212 are designed to correspond, which ensures the stable linear movement of the valve core 22 (including the rod 2211 and the tailstock 2212) in the infusion channel, reduces the shaking or deflection of the valve core 22 during the movement, and improves the working stability and reliability of the check valve 2.

[0056] The multiple infusion grooves 2213 provided on the outer wall of the valve stem 221 provide a flow channel for the detergent, allowing the detergent to flow more smoothly through the valve stem 221 during pumping, reducing flow resistance caused by blockage or narrowing of the flow channel, and improving the pumping efficiency of the detergent.

[0057] In one embodiment, the check valve 2 further includes an adapter 24, which is connected to one end of the valve housing 21 near the second channel section 213, and the other end of the adapter 24 away from the valve housing 21 is connected to the detergent delivery pump 3.

[0058] The adapter 24 acts as a bridge between the valve housing 21 and the detergent delivery pump 3, simplifying the connection process. Through the adapter 24, the check valve 2 can be more easily connected to the detergent delivery pump 3 without requiring complex processing or modification of the valve housing 21 or pump body. Furthermore, it facilitates the assembly of the valve core 22 and the return spring 23; the valve core 22 and the return spring 23 can be installed first, and then the adapter 24 can be installed.

[0059] In one embodiment, the adapter 24 is provided with an insertion end 241 at both ends. One end of the insertion end 241 is inserted into the second channel section 213, and the other end of the insertion end 241 is inserted into the infusion tube of the detergent delivery pump 3.

[0060] The design of the insertion ends 241 at both ends of the adapter 24 enables a stable connection with the second channel section 213 and the detergent delivery pump 3 tubing. This insertion method can provide sufficient friction and mechanical locking force to ensure that the adapter 24 will not loosen or fall off during detergent pumping.

[0061] In one embodiment, the valve housing 21 is provided with an extension 211 at one end near the liquid outlet 2111. The valve housing 21 is sealed to the liquid inlet connector 14. The extension 211 extends into the manifold, so that the liquid outlet 2111 is placed in the manifold.

[0062] The design of the extension 211 allows the outlet 2111 to be precisely placed in the manifold, so that the squeezed detergent can be quickly flushed away by the incoming water, avoiding the problem of detergent residue near the outlet 2111 after one water intake.

[0063] On the other hand, a washing machine is provided, including the aforementioned water inlet system with detergent dispensing function.

[0064] Similarly, based on the water inlet system with detergent dispensing function in this embodiment, when clean water is injected again for rinsing after a washing stage is completed, the problem of detergent mixing into the rinsing water and causing pollution can be avoided, thus optimizing the washing effect and user experience.

[0065] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not 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 application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0066] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0068] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A water inlet system with detergent dispensing function, characterized in that, include: The connector (1) includes a manifold (11) and an inlet connector (12), an outlet connector (13) and a liquid inlet connector (14) respectively connected to the manifold (11). The manifold (11) forms a manifold cavity inside. The inlet connector (12) and the outlet connector (13) are respectively connected to the inlet pipe and the outlet pipe. Detergent delivery pump (3), used for pumping detergent; Check valve (2), its inlet end is connected to the detergent delivery pump (3), and its outlet end is connected to the inlet connector (14). The check valve (2) is opened unidirectionally from the detergent delivery pump (3) to the manifold (11) so that the detergent delivery pump (3) can pump detergent into the manifold. The check valve (2) includes an outlet (2111) and a valve core (22) that can block the outlet (2111) when closed. The outlet (2111) extends into the manifold, so that the detergent squeezed out from the outlet (2111) can mix with the water in the manifold.

2. The water inlet system with detergent dispensing function according to claim 1, characterized in that, The check valve (2) includes a valve body (21) and a return spring (23). The valve body (21) is provided with a liquid delivery channel. The port of the liquid delivery channel located in the manifold forms the liquid outlet (2111). The valve core (22) includes a valve stem (221) and a valve head (222) connected to the end of the valve stem (221). The valve stem (221) is located in the liquid delivery channel and connected to the return spring (23). When the detergent delivery pump (3) squeezes out detergent, the detergent pushes the valve head (222) to drive the valve stem (221) to overcome the elastic force of the return spring (23) to open the liquid outlet (2111). When the detergent delivery pump (3) stops squeezing out detergent, the return spring (23) drives the valve stem (221) and the valve head (222) to return to their original positions, so that the valve head (222) blocks the liquid outlet (2111).

3. The water inlet system with detergent dispensing function according to claim 2, characterized in that, The valve head (222) is shaped like a ball, and the valve body (21) has a corresponding hemispherical groove (214) at one end near the liquid outlet (2111).

4. The water inlet system with detergent dispensing function according to claim 2, characterized in that, The infusion channel includes a first channel segment (212) and a second channel segment (213). The radial dimension of the second channel segment (213) is larger than that of the first channel segment (212), such that the end of the second channel segment (213) connected to the first channel segment (212) forms a limiting stepped surface (2131). The valve stem (221) includes a stem body (2211) and a tail seat (2212). The tail seat (2212) is located in the second channel segment (213). One end of the stem body (2211) is connected to the tail seat (2212), and the other end extends to the first channel segment (212) and is connected to the valve head (222). The return spring (23) is sleeved on the outside of the stem body (2211), and the two ends of the return spring (23) abut against the limiting stepped surface (2131) and the tail seat (2212) respectively.

5. The water inlet system with detergent dispensing function according to claim 4, characterized in that, The rod (2211) and the tailstock (2212) are an integral structure, and the rod (2211) and the valve head (222) are assembled and connected.

6. The water inlet system with detergent dispensing function according to claim 4, characterized in that, The outer diameter of the tailstock (2212) corresponds to the radial dimension of the second channel segment (213), and the outer diameter of the rod (2211) corresponds to the radial dimension of the first channel segment (212), so that the infusion channel can guide the linear movement of the valve core (22); moreover, the outer wall of the valve stem (221) is provided with multiple infusion grooves (2213), which are used to provide a flow channel for detergent.

7. The water inlet system with detergent dispensing function according to claim 4, characterized in that, The check valve (2) also includes an adapter (24), which is connected to one end of the valve housing (21) near the second channel section (213), and the other end of the adapter (24) away from the valve housing (21) is connected to the detergent delivery pump (3).

8. The water inlet system with detergent dispensing function according to claim 7, characterized in that, The adapter (24) has an insertion end (241) at each end. One end of the insertion end (241) is inserted into the second channel section (213), and the other end of the insertion end (241) is inserted into the delivery tube of the detergent delivery pump (3).

9. The water inlet system with detergent dispensing function according to claim 2, characterized in that, The valve housing (21) has an extension (211) at one end near the liquid outlet (2111). The valve housing (21) is sealed to the liquid inlet connector (14). The extension (211) extends into the manifold, so that the liquid outlet (2111) is placed in the manifold.

10. A washing machine, characterized in that, The water inlet system includes the detergent dispensing function as described in any one of claims 1-9.

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