Detergent putting device and washing machine

Abstract

The detergent putting device comprises a water inlet branch, a water mixing branch and a water outlet branch which are connected in sequence, and water introduced by the water inlet branch and a detergent extracted by the water inlet branch are mixed in the water mixing branch and flow out of the water outlet branch; the pressure relief part is rotationally arranged at the joint of the water inlet branch and the water mixing branch and used for changing the opening section of the joint of the water inlet branch and the water mixing branch and adjusting the liquid flowing pressure of the water mixing branch. The pressure relief piece is arranged at the connecting position of the water inlet branch and the water mixing branch, the opening section of the connecting position of the water inlet branch and the water mixing branch is changed, the flow of water flow is limited to a certain degree, the flowing pressure of liquid on the water mixing branch can be effectively changed, and the water mixing effect is improved. A one-way valve or other components arranged at the joint of the water mixing waterway and the detergent feeding waterway are prevented from being broken down, and normal operation of feeding tap water and detergent into the mixing branch is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of detergent dispensing equipment, and in particular, relates to a detergent dispensing device and a washing machine. Background Art

[0002] With the advancement of technology, existing fully automatic washing machines have gradually appeared with automatic detergent dispensing functions. The working principle is roughly to place the detergent in a liquid storage box in advance. After the outlet of the liquid storage box is connected to the water box docking valve, the detergent is drawn into the water box for dilution, and then put into the inner barrel of the washing machine for washing.

[0003] There is also an automatic detergent delivery device that can connect the water inlet and the detergent delivery waterway, and mix the detergent with tap water in the water inlet before delivering it to the washing tub. In the traditional design, a flow meter or pressure sensor is set in the water inlet to detect the flow rate or pressure of the water flowing through. When the water flow rate or pressure changes too much, or reaches a preset threshold, an alarm will be processed. However, there are no actual control measures for the changes in water flow during the delivery process. It will cause the relevant pipes or valve bodies in the water inlet or detergent delivery waterway to break and fail, resulting in a malfunction of the detergent delivery operation and the inability to perform subsequent washing operations. Even if the detergent and tap water delivery operations are shut down in an emergency, the clothes cannot be washed in time due to the start-stop action.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a detergent dispensing device, which provides a detergent dispensing device by arranging a pressure relief piece at the connection between the water inlet branch and the water mixing branch, so as to change the opening cross-section of the connection between the water inlet branch and the water mixing branch and adjust the liquid flow pressure of the water mixing branch, thereby effectively changing the flow pressure of the liquid on the water mixing branch by imposing certain restrictions on the flow rate of the water flow, avoiding the breakdown of the one-way valve or other components arranged at the connection between the water mixing branch and the detergent dispensing water channel, and effectively ensuring the normal operation of the tap water and detergent dispensing into the mixing branch.

[0006] Another object of the present invention is to provide a washing machine.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a detergent dispensing device, comprising a water inlet branch, a water mixing branch and a water outlet branch connected in sequence, the water introduced by the water inlet branch and the extracted detergent are mixed in the water mixing branch and flow out from the water outlet branch; and further comprising,

[0008] The pressure relief component is rotatably arranged at the connection between the water inlet branch and the water mixing branch, and is used to change the opening cross-section of the connection between the water inlet branch and the water mixing branch and adjust the liquid flow pressure of the water mixing branch.

[0009] Furthermore, the connection between the water inlet branch and the water mixing branch has an angle;

[0010] A water hole is provided in the pressure relief member, the water inlet end of the water hole is connected to the water inlet branch, and the water outlet end of the water hole is connected to the water mixing branch;

[0011] Preferably, the angle is a right angle.

[0012] Furthermore, a rotation seal is arranged between the outer peripheral wall of the pressure relief component and the side wall of the water inlet branch or the water mixing branch or the connection between the two.

[0013] Furthermore, the outer peripheral wall of the pressure relief component rotates around the axis of the water inlet branch or the axis of the water mixing branch, and the water inlet end of the water through hole can be at least partially or completely offset from the water inlet branch.

[0014] Furthermore, it also includes:

[0015] A driving mechanism, wherein the driving end of the driving mechanism is coaxially connected to the end of the pressure relief component, and is used to change the relative angle between the water inlet end of the pressure relief component and the water inlet branch.

[0016] Furthermore, a pressure sensor is provided in the mixed water branch, and the pressure sensor is provided on a side close to the water outlet branch.

[0017] Furthermore, a mounting seat is provided at the water outlet end of the water inlet branch, and a mounting cavity, a rotating shaft cavity and a water outlet cavity are sequentially provided in the mounting seat along the liquid flow direction in the water mixing branch, and the aperture size of each cavity decreases sequentially.

[0018] Furthermore, a first positioning ring is provided at a transition point between the installation cavity and the rotating shaft cavity, and the first positioning ring extends from the connection point toward the installation cavity.

[0019] Furthermore, a second positioning ring is provided at the transition between the rotating shaft cavity and the water outlet cavity, and the second positioning ring extends from the connection point toward the rotating shaft cavity;

[0020] The pressure relief member is at least partially rotationally sealed with the rotating shaft cavity.

[0021] The present invention also provides a washing machine, which is provided with any of the above-mentioned detergent dispensing devices; or, the washing machine is provided with an external water pipe, which is connected to the water outlet branch of any of the above-mentioned detergent dispensing devices.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0023] (1) The present invention provides a pressure relief component at the connection between the water inlet branch and the water mixing branch to change the opening cross-section of the connection between the water inlet branch and the water mixing branch, adjust the liquid flow pressure of the water mixing branch, and effectively change the flow pressure of the liquid on the water mixing branch by restricting the water flow to a certain extent. Then, when the water flow or water pressure changes, timely adjustments are made to avoid puncturing the one-way valve or other components provided at the connection between the water inlet waterway and the detergent delivery waterway, and effectively ensure that the delivery of tap water and detergent to the mixing branch proceeds normally.

[0024] (2) The present invention provides a water hole in the pressure relief component, the water inlet end of the water hole is connected to the water inlet branch, and the water outlet end of the water hole is connected to the water mixing branch, with the included angle being a right angle. The extension directions of the water inlet end and the water outlet end of the water hole of the pressure relief component are respectively consistent with the extension directions of the water inlet branch and the water mixing branch, thereby ensuring that the water flow under normal water volume or water pressure can flow smoothly without resistance causing disturbance or backflow, which affects the normal water inlet.

[0025] (3) The present invention provides a pressure sensor in the water mixing branch. The pressure sensor is provided close to one side of the water outlet branch, so that the actual water outlet pressure can be reflected more accurately, thereby avoiding the pressure change due to the change of the diameter. If the pressure sensor is provided here, the water pressure detected by the pressure sensor cannot represent the actual water pressure in the water mixing branch, resulting in erroneous operation of the rotating pressure relief component.

[0026] (4) The present invention provides a mounting seat at the water outlet end of the water inlet branch, and a mounting cavity, a rotating shaft cavity and a water outlet cavity are sequentially arranged in the mounting seat along the liquid flow direction in the water mixing branch. The aperture size of each cavity decreases sequentially. By changing the aperture, the interior of the mounting seat presents a step-like change trend, so that the motor can be installed in the mounting cavity, and the pressure relief component can be rotatably installed in the rotating shaft cavity. The motor and the pressure relief component are positioned by the step surface formed by the aperture change.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0029] Figure 1 It is a three-dimensional structural schematic diagram of a detergent dispensing device of the present invention;

[0030] Figure 2 is a cross-sectional view of a detergent dispensing device of the present invention;

[0031] Figure 3 It is a schematic diagram of the water inlet branch pipe structure of a detergent dispensing device of the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of a water inlet branch pipe of a detergent dispensing device of the present invention;

[0033] Figure 5 It is a cross-sectional view of a water inlet branch pipe of a detergent dispensing device of the present invention;

[0034] Figure 6 It is a structural schematic diagram of a pressure relief component of a detergent dispensing device of the present invention.

[0035] In the figure: 1. water inlet branch; 11. mounting seat; 111. first wall; 112. second wall; 113. third wall; 1131. sealing ring groove; 114. mounting cavity; 115. shaft cavity; 116. water outlet cavity; 117. first positioning ring; 118. second positioning ring; 2. water mixing branch; 3. water outlet branch; 4. driving mechanism; 5. pressure relief member; 51. water through hole; 511. water inlet end; 512. water outlet end; 6. pressure sensor; 7. one-way valve.

[0036] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] like Figures 1 to 6 As shown, a detergent dispensing device according to the present invention comprises a water inlet branch 1, a water mixing branch 2 and a water outlet branch 3 connected in sequence, and the water introduced by the water inlet branch 1 and the extracted detergent are mixed in the water mixing branch 2 and flow out from the water outlet branch 3. The water inlet branch 1, the water outlet branch 3 and the water mixing branch 2 located therebetween constitute a water inlet waterway, and the tap water and the detergent are mixed in the entire water inlet waterway and flow out from the water outlet branch 3.

[0041] In the present invention, the detergent dispensing device at least includes a detergent dispensing waterway, which is connected to the water inlet waterway. Among them, multiple detergent dispensing waterways can be set according to the type of detergent. The detergent can be detergent, softener, renovation agent, disinfectant and other detergents that can be used in the main washing process.

[0042] Each detergent delivery water channel is provided with a one-way valve 7 at the connection point with the water inlet water channel, and the conducting direction of the one-way valve 7 is directed from the detergent delivery water channel to the water inlet water channel. According to the selection of the corresponding washing program, the corresponding one-way valve 7 is controlled to be conducted, so as to premix with the water flow in the water inlet water channel, so that the detergent can be mixed in the detergent delivery device, and the detergent mixed liquid can be delivered into the corresponding connected washing machine along with the tap water from the outside.

[0043] However, the conventional water inlet waterway is provided with a flow meter or a pressure sensor 6 in the path through which the liquid flows, and the water volume or water pressure is detected by the flow meter or the pressure sensor 6. When the corresponding preset threshold is reached, an alarm will be issued to remind the user or the manager that the water inlet waterway in the detergent delivery device is faulty. However, due to the lack of timely adjustment and control of the water inlet waterway, the water pressure in the water inlet waterway may be too high, breaking through the one-way valve 7 or other components provided at the connection between the water inlet waterway and the detergent delivery waterway. Alternatively, by giving an alarm and shutting down the delivery action in time, the washing action of the clothes will also be delayed due to the start and stop action of the entire waterway, causing inconvenience to the user.

[0044] In order to overcome the above-mentioned defects, the present invention makes corresponding improvements:

[0045] Furthermore, it also includes a pressure relief component 5, which is rotatably arranged at the connection between the water inlet branch 1 and the water mixing branch 2, and is used to change the opening cross-section of the connection between the water inlet branch 1 and the water mixing branch 2 and adjust the liquid flow pressure of the water mixing branch 2.

[0046] In the present invention, the pressure relief member 5 is rotatably arranged on the water inlet branch 1 and the water mixing branch 2, and the size of the opening cross-section of the connection is controlled by the rotation of the pressure relief member 5. In the application process of the specific delivery device, when the water volume or water pressure in the water inlet waterway is too large, the rotation angle of the pressure relief member 5 is timely adjusted, so that the flow rate of the water flow passing through the connection is restricted to a certain extent, thereby effectively changing the flow pressure of the liquid on the water mixing branch 2. Then, when the water flow rate or water pressure changes, timely adjustment is made to avoid the breakdown of the one-way valve 7 or other components arranged at the connection between the water inlet waterway and the detergent delivery waterway, and effectively ensure the normal delivery of tap water and detergent to the mixing branch.

[0047] In one of the preferred embodiments, the pressure relief member 5 is a plate-like structure, and the outer peripheral wall of the pressure relief member 5 is sealed against the side wall of the opening at the connection, and the size of the opening cross-section of the connection can be adjusted by rotation, thereby adjusting the flow rate of the water flow.

[0048] Furthermore, the connection between the water inlet branch 1 and the water mixing branch 2 has an angle;

[0049] A water hole 51 is provided in the pressure relief member 5, a water inlet end 511 of the water hole 51 is connected to the water inlet branch 1, and a water outlet end 512 of the water hole 51 is connected to the water mixing branch 2;

[0050] Preferably, the angle is a right angle.

[0051] In the present invention, another preferred embodiment is that a through water hole 51 is provided inside the pressure relief member 5. In the initial state, the water inlet end 511 of the water hole 51 is connected to the end of the water inlet branch 1, and the water outlet end 512 of the water hole 51 is connected to the end of the water mixing branch 2, so that in the normal water outlet state, the water hole 51 is connected to the entire water inlet waterway, ensuring that the external tap water can be normally transported in the water inlet waterway. The water inlet branch 1 is connected to the side wall of the water mixing branch 2 at an angle, preferably at an angle of 90°, and the extension directions of the water inlet end 511 and the water outlet end 512 of the water hole 51 of the pressure relief member 5 are respectively consistent with the extension directions of the water inlet branch 1 and the water mixing branch 2, so that it can be ensured that the water flow under normal water volume or water pressure can flow smoothly, and there will be no resistance to cause disturbance and backflow, which affects the normal water inlet.

[0052] Furthermore, a rotation seal is arranged between the outer peripheral wall of the pressure relief member 5 and the side wall of the connection between the water inlet branch 1 or the water mixing branch 2 or both.

[0053] In the present invention, the pressure relief component 5 serves as a flow control component of the water inlet branch 1 or the water mixing branch 2. The outside of the pressure relief component 5 and the inner wall of the water inlet branch 1 or the water mixing branch 2 need to be sealed to ensure that the pressure relief component 5 does not leak during rotation.

[0054] Furthermore, the outer peripheral wall of the pressure relief component 5 rotates around the axis of the water inlet branch 1 or the axis of the water mixing branch 2, and the water inlet end 511 can be at least partially or completely offset from the water inlet branch 1.

[0055] In the present invention, the pressure relief member 5 is a columnar structure, and its rotation axis coincides with the axis of the water inlet branch 1 or the axis of the water mixing branch 2. Taking the case where the rotation axis of the pressure relief member 5 coincides with the axis of the water mixing branch 2 as an example, the outer peripheral wall of the pressure relief member 5 is sealed with the inner wall of the water inlet branch 1 and can rotate along the axis of the water mixing branch 2. In the initial assembly state, the outer peripheral wall of the pressure relief member 5 has a water inlet end 511 of the water through hole 51, and a water outlet end 512 is provided on the end face close to the water mixing branch 2. The water inlet end 511 and the water outlet end 512 are bent inside the pressure relief member 5 to extend out of the water through hole 51. And the water inlet end 511 corresponds to the pipeline opening of the water inlet branch 1.

[0056] When the pressure relief member 5 is axially rotated, the water inlet end 511 gradually staggers with the pipe opening of the water inlet branch 1, that is, the water flow rate entering the water mixing branch 2 is gradually reduced. When the water pressure or water flow rate of the water inlet branch 1 is too large, the axial angle of the pressure relief member 5 is rotated, and the water flow rate or water pressure can be controlled by staggering the water inlet end 511 of the water hole 51 with the pipe opening on the water inlet branch 1, thereby preventing the water mixing branch 2 or the one-way valve 7 installed thereon and other components from being damaged or burst by impact.

[0057] Furthermore, it also includes:

[0058] The driving mechanism 4 has a driving end coaxially connected to the end of the pressure relief member 5 , and is used to change the relative angle between the water inlet end 511 of the pressure relief member 5 and the water inlet branch 1 .

[0059] In the present invention, a driving mechanism 4 is provided to connect the ends of the pressure relief member 5, thereby driving the pressure relief member 5 to rotate, thereby realizing an opening cross-section at the connection between the water inlet end 511 of the water hole 51 and the water inlet branch 1 or the water mixing branch 2 or the two.

[0060] Specifically, the driving mechanism 4 can be a motor, preferably a servo motor, which can accurately control the rotation angle of the pressure relief member 5 to ensure the water flow through the water mixing branch 2, thereby ensuring that the subsequent detergent delivery operation is carried out normally.

[0061] Furthermore, a pressure sensor 6 is provided in the mixed water branch 2 , and the pressure sensor 6 is provided close to a side of the water outlet branch 3 .

[0062] In the present invention, a pressure sensor 6 is arranged on the inner wall of the water mixing branch 2, wherein the pressure sensor 6 is arranged on the upper half of the inner wall and on a side close to the water outlet branch 3. With this arrangement, on the one hand, during the process of rotating the angle between the water hole 51 of the pressure relief member 5 and the pipe opening of the water inlet branch 1, the pressure will change due to the change in the size of the caliber, and the arrangement of the pressure sensor 6 here will result in the water pressure detected by the pressure sensor 6 not representing the actual water pressure in the water mixing branch 2. After the pressure sensor 6 is arranged on the side close to the water outlet branch 3, the actual outlet water pressure can be more accurately reflected.

[0063] Furthermore, a mounting seat 11 is provided at the water outlet end 512 of the water inlet branch 1, and a mounting cavity 114, a rotating shaft cavity 115 and a water outlet cavity 116 are sequentially provided in the mounting seat 11 along the liquid flow direction in the water mixing branch 2, and the aperture size of each cavity decreases sequentially.

[0064] In the present invention, a mounting seat 11 connected to the inside of the water inlet branch 1 is provided at the top, and the mounting seat 11 is integrally formed with the water inlet branch 1. A plurality of threaded holes are provided on the outside of the mounting seat 11, and the mounting seat 11 is fixedly connected to the housing of the detergent dispensing device by screws. The mounting seat 11 is provided with a mounting cavity 114, a rotating shaft cavity 115, and a water outlet cavity 116, whose apertures decrease successively along the direction of the water mixing branch 2. By changing the aperture, the inside of the mounting seat 11 presents a step-like change trend. There are protruding step surfaces between the mounting cavity 114 and the rotating shaft cavity 115, and between the rotating shaft cavity 115 and the water outlet cavity 116, so that the motor can be installed in the mounting cavity 114, and the pressure relief member 5 can be rotatably installed in the rotating shaft cavity 115, and the motor and the pressure relief member 5 are positioned by the step surfaces formed by the change in aperture.

[0065] Furthermore, a first positioning ring 117 is provided at a transition point between the installation cavity 114 and the shaft cavity 115 , and the first positioning ring 117 extends from the connection point toward the installation cavity 114 .

[0066] In the present invention, a first positioning ring 117 is provided on the periphery of the stepped table formed at the transition between the installation cavity 114 and the shaft cavity 115, wherein the first positioning ring 117 extends in a direction away from the mixed water branch 2 to form a first annular groove. A first annular protrusion corresponding to the first annular groove is provided on the outer shell of the motor, and when installing the motor, the first annular protrusion can be inserted into the first annular groove to complete the positioning and limiting effect of the motor installation. The first annular protrusion and the first annular groove are interference fits, which ensures that the motor has a certain friction after being inserted into the installation cavity 114, so as not to loosen or fall off.

[0067] Furthermore, a second positioning ring 118 is provided at the transition between the rotating shaft cavity 115 and the water outlet cavity 116, and the second positioning ring 118 extends from the connection point toward the rotating shaft cavity 115;

[0068] The pressure relief member 5 is at least partially rotationally sealed with the shaft cavity 115 .

[0069] In the present invention, a second positioning ring 118 is provided at the outermost part of the stepped table formed at the transition between the rotating shaft cavity 115 and the water outlet cavity 116. The second positioning ring 118 extends in a direction away from the mixed water branch 2 to form a second annular groove. A second annular protrusion corresponding to the second annular groove is provided at the end of the pressure relief member 5, so that when the pressure relief member 5 is installed in the rotating shaft cavity 115 of the mounting seat 11, the positioning and limiting effect of the pressure relief member 5 during installation can be guaranteed. The second annular protrusion and the second annular groove are clearance-fitted, and a rotational seal is formed between the outer peripheral wall of the pressure relief member 5 and the side wall of the rotating shaft cavity 115, thereby ensuring the positioning and sealing effect of the pressure relief member 5 in the rotating shaft cavity 115.

[0070] Specifically, the end of the pressure relief member 5 can be narrowed and extended into the water outlet chamber 116 , and the extended portion is rotatably sealed and connected to the side wall of the water outlet chamber 116 .

[0071] Furthermore, the outer peripheral wall of the mounting seat 11 is configured to be a first wall 111, a second wall 112 and a third wall 113, the outer diameters of which decrease in sequence, wherein the third wall 113 is circular in longitudinal section and can be plugged or docked to the pipe opening of the water mixing branch 2, and a sealing ring groove 1131 is provided on the outer periphery of the third wall 113, and a sealing ring is sleeved in the sealing ring groove 1131. A step surface is formed at the connection between the first wall 111 and the second wall 112, and a step surface is also formed at the connection between the second wall 112 and the third wall 113, and the step surface is provided to match the installation position of the housing of the detergent dispensing device to ensure accurate positioning.

[0072] The present invention also provides a washing machine, on which any of the above-mentioned detergent dispensing devices is provided; or, the washing machine is provided with an external water pipe, which is connected to the water outlet branch 3 of any of the above-mentioned detergent dispensing devices. The water inlet branch 1 of the detergent dispensing device is connected to the external tap water, and the water outlet branch 3 is connected to the external water pipe drawn from the inside of the washing machine. That is, at this time, the detergent dispensing device can be used as a separate device, which is connected to the external tap water pipe and the external water pipe of the washing machine through water pipes, which is an external setting. Another preferred embodiment integrates the detergent dispensing device into the washing machine. Through the design of the pipeline, the water outlet branch of the detergent dispensing device directly leads to the inside of the washing machine, and the water inlet branch of the detergent dispensing device is connected to the external tap water pipe, which is an integrated setting.

[0073] The multiple one-way valves 7 arranged on the mixing water branch 2 can be electromagnetic one-way valves 7. Corresponding to different washing programs in the washing machine, the corresponding detergents can be controlled to be added to the mixing water branch 2, and then the detergents added to the mixing water branch 2 are rinsed and mixed by the tap water of the water inlet branch 1, and then added to the washing machine through the water outlet branch 3.

[0074] When the pressure sensor 6 in the water mixing branch 2 detects that the water pressure is too high, the pressure relief member 5 is rotated and adjusted relative to the water inlet branch 1 by controlling the motor, so that the water hole 51 is staggered with the pipe mouth of the water inlet branch 1, thereby reducing the water flow and thus reducing the overall water pressure. When the pressure sensor 6 detects that the pressure is too low or there is no pressure, it means that the water flow is too small at this time, and the motor can be reversed to rotate the pressure relief member 5 to increase the water flow of the water mixing branch 2 and ensure the water pressure.

[0075] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A detergent dispensing device, comprising a water inlet branch (1), a water mixing branch (2) and a water outlet branch (3) connected in sequence, wherein water introduced from the water inlet branch (1) and the extracted detergent are mixed in the water mixing branch (2) and flow out from the water outlet branch (3); characterized in that: Also includes, The pressure relief member (5) is rotatably arranged at the connection between the water inlet branch (1) and the water mixing branch (2), and is used to change the opening cross section at the connection between the water inlet branch (1) and the water mixing branch (2) and to adjust the liquid flow pressure of the water mixing branch (2).

2. A detergent dispensing device according to claim 1, characterized in that: The connection between the water inlet branch (1) and the water mixing branch (2) has an angle; A water hole (51) is provided in the pressure relief member (5); a water inlet end (511) of the water hole (51) is connected to the water inlet branch (1); and a water outlet end (512) of the water hole (51) is connected to the water mixing branch (2); Preferably, the angle is a right angle.

3. A detergent dispensing device according to claim 2, characterized in that: The outer peripheral wall of the pressure relief member (5) is provided with a rotation seal with the side wall of the water inlet branch (1) or the water mixing branch (2) or the connection between the two.

4. A detergent dispensing device according to claim 3, characterized in that: The outer peripheral wall of the pressure relief member (5) rotates around the axis of the water inlet branch (1) or the axis of the water mixing branch (2), and the water inlet end (511) of the water through hole (51) can be at least partially or completely offset from the water inlet branch (1).

5. A detergent dispensing device according to claim 4, characterized in that: Also includes, A driving mechanism (4), wherein a driving end of the driving mechanism (4) is coaxially connected to an end of the pressure relief member (5), and is used to change a relative angle between a water inlet end (511) of the pressure relief member (5) and the water inlet branch (1).

6. A detergent dispensing device according to any one of claims 1 to 5, characterized in that: A pressure sensor (6) is arranged in the water mixing branch (2), and the pressure sensor (6) is arranged close to a side of the water outlet branch (3).

7. A detergent dispensing device according to claim 6, characterized in that: A mounting seat (11) is provided at the water outlet end (512) of the water inlet branch (1), and a mounting cavity (114), a rotating shaft cavity (115) and a water outlet cavity (116) are sequentially provided in the mounting seat (11) along the flow direction of liquid in the water mixing branch (2), and the aperture size of each cavity decreases sequentially.

8. A detergent dispensing device according to claim 7, characterized in that: A first positioning ring (117) is provided at the transition point between the installation cavity (114) and the rotating shaft cavity (115), and the first positioning ring (117) extends from the connection point toward the installation cavity (114).

9. A detergent dispensing device according to claim 8, characterized in that: A second positioning ring (118) is provided at the transition between the rotating shaft cavity (115) and the water outlet cavity (116), and the second positioning ring (118) extends from the connection point toward the rotating shaft cavity (115); The pressure relief member (5) is at least partially rotationally sealed with the rotating shaft cavity (115).

10. A washing machine, characterized in that: The washing machine is provided with a detergent dispensing device as described in any one of claims 1 to 9; Alternatively, the washing machine is provided with an external water pipe, which is connected to the water outlet branch (3) of the detergent dispensing device according to any one of claims 1 to 9.

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