A delivery device and a control method for a delivery device

Abstract

The application discloses a feeding device and a control method of the feeding device. The feeding device comprises a detergent box, a feeding pipeline and a water inlet pipeline. The detergent box is communicated with the water inlet pipeline through the feeding pipeline. An adapter is arranged at a liquid outlet of the water inlet pipeline. The feeding device further comprises a detection device for detecting a water leakage condition at an assembly position of the water inlet pipeline and the adapter. The water leakage condition at the assembly position of the water inlet pipeline and the adapter can be accurately obtained by the detection device.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a dispensing device and a control method for the dispensing device. Background Technology

[0002] As people's living standards improve, appliances such as washing machines and dishwashers are generally equipped with dispensing devices for adding different additives. These devices have water channels that connect to the washing drum. The dispensing device also has a storage chamber for the additives, which is connected to the water channels. A suction mechanism in the water channels draws the additives from the storage chamber into the water channels. Then, the additives are flushed by the incoming water flowing through the water channels before being added to the washing drum, thus dispensing the additives.

[0003] Existing washing devices mostly use external dispensing devices. These devices can simultaneously dispense liquid into the washing chambers of multiple washing devices through an adapter structure. This adapter structure has an inlet connected to the dispensing device and at least one outlet connected to a corresponding washing chamber. By selectively opening or closing the outlets, the dispensing can be selectively applied to the washing chambers of multiple washing devices. Currently, this adapter structure or dispensing device does not have a detection device to detect leakage at the junction of the dispensing device's outlet and the adapter. Therefore, it is not possible to accurately determine the leakage situation at the junction of the dispensing device's outlet and the adapter. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a dispensing device and a control method for the dispensing device. The device detects the leakage at the assembly of the water inlet pipe and the adapter, so that the user can accurately know the leakage at the assembly of the water inlet pipe and the adapter.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] The present invention provides a dispensing device, including a detergent box, a dispensing pipe and a water inlet pipe. The detergent box is connected to the water inlet pipe via the dispensing pipe. An adapter is installed at the outlet of the water inlet pipe. The device also includes a detection device for detecting leakage at the assembly point of the water inlet pipe and the adapter.

[0007] Furthermore, the adapter has a hollow interior forming a cavity, and one end of the water inlet pipe's outlet forms a connector. The connector is inserted into the cavity, and the detection device is located on the connector.

[0008] Furthermore, the adapter has a water inlet pipe, and a water inlet channel is formed inside the water inlet pipe. The cavity includes a transfer cavity and a water inlet channel communicating with the transfer cavity, and the plug is inserted into the water inlet channel.

[0009] Furthermore, the detection device is a pressure sensor that detects the liquid pressure at the assembly point of the inlet pipe and the adapter, or a flow sensor that detects the liquid flow rate at the assembly point of the inlet pipe and the adapter.

[0010] The present invention also provides a control method for a dispensing device. Using the dispensing device provided by the above technical solution, the actual value of the liquid parameters flowing through the water inlet pipe and the adapter assembly is obtained. If the actual value of the liquid parameters is greater than the set value, water leakage occurs at the assembly.

[0011] Furthermore, the inlet pressure at the assembly point is checked to obtain the actual inlet pressure. If the actual inlet pressure is greater than or equal to the set pressure, then the assembly point will not leak.

[0012] Furthermore, if the actual inlet pressure is less than the set pressure, the pressure difference between the set pressure and the actual inlet pressure is obtained. If the pressure difference is greater than or equal to the set pressure difference, the assembly will not leak. If the pressure difference is less than the set pressure difference, the assembly will leak.

[0013] Furthermore, the inlet flow rate at the assembly point is detected to obtain the actual inlet flow rate. If the actual inlet flow rate is greater than the set flow rate but less than the maximum set flow rate, then the assembly point is not leaking.

[0014] Furthermore, the flow rate of the liquid entering the assembly is detected at two time points, and the flow rate difference between the two flow rate values ​​is obtained. If the flow rate difference is greater than or equal to the set flow rate difference, the assembly will not leak water; if the flow rate difference is less than the set flow rate difference, the assembly will leak water.

[0015] Furthermore, if the actual inflow rate is less than the set flow rate, or if the actual inflow rate is greater than the maximum set flow rate, then the assembly will leak.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0017] 1. By using a detection device to check whether the plug is blocking the liquid outlet, users can accurately know the blockage status of the liquid outlet, and thus accurately know the dispensing status of the dispensing device.

[0018] 2. By using a detection device to detect leaks at the water inlet pipe and adapter assembly, users can accurately determine the extent of any leaks at the water inlet pipe and adapter assembly.

[0019] 3. By installing a color-changing structure at the liquid outlet, when water leaks at the connector's liquid outlet, the color-changing structure changes color upon contact with water, thus enabling users to accurately determine the leakage situation at the liquid outlet.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the adapter structure provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the dispensing device provided in an embodiment of the present invention;

[0024] Figure 3 A flowchart illustrating a control method for a dispensing device according to an embodiment of the present invention;

[0025] Figure 4 A flowchart illustrating a control method for a dispensing device according to another embodiment of the present invention;

[0026] Figure 5 A flowchart of a control method for a dispensing device provided in another embodiment of the present invention.

[0027] Icons: 1-Adapter; 11-Cavity; 111-Transfer Chamber; 12-Outlet Pipe; 121-Outlet; 122-Limiting Protrusion; 13-Inlet Pipe; 131-Inlet; 2-First Detection Device; 21-Photoelectric Switch; 3-Plug; 31-Blocking Area; 311-Axial End Face; 32-Protrusion; 33-Flexible Connecting Arm; 4-Color Changing Structure; 41-Color Changing Coating; 5-Dispensing Device; 51-Outer Shell; 52-Dispensing Pipeline; 521-Dispensing Pump; 53-Water Inlet Pipeline; 531-Plug-in Part; 54-Detergent Box; 6-Second Detection Device.

[0028] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0029] To make the objectives, 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 with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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. Therefore, they should not be construed as limiting this invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figure 1 As shown, the present invention provides an adapter structure, including an adapter 1, the adapter 1 having a hollow cavity 11, the cavity 11 having at least one liquid outlet 121, and each liquid outlet 121 having a plug 3 for sealing the liquid outlet 121, characterized in that the plug 3 is provided with a detection device for detecting whether the plug 3 seals the liquid outlet 121.

[0033] In embodiments of the present invention, by detecting whether the plug 3 blocks the liquid outlet 121, the user can accurately know the blocking status of the liquid outlet 121, thereby accurately knowing the dispensing status of the dispensing device 5. The detection device used to detect whether the plug 3 blocks the liquid outlet 121 is a first detection device 2;

[0034] The cavity 11 has at least one liquid outlet 121, that is, the cavity 11 has one liquid outlet 121, or the cavity 11 has multiple liquid outlets 121. When the liquid outlet 121 does not dispense liquid, the plug 3 blocks the liquid outlet 121. When the liquid outlet 121 dispenses liquid, the plug 3 opens the liquid outlet 121.

[0035] The adapter 1 is used on the detergent dispensing device 5, which includes a detergent box 54, a dispensing pipe 52 and a water inlet pipe 53. The detergent box 54 is connected to the water inlet pipe 53 via the dispensing pipe 52, and the outlet 121 of the water inlet pipe 53 is connected to the cavity 11.

[0036] like Figure 2As shown, specifically, the dispensing device 5 also includes a housing 51, multiple detergent boxes 54, multiple dispensing pipes 52, and one water inlet pipe 53. All detergent boxes 54 are located outside the housing 51, and all dispensing pipes 52 are located inside the detergent boxes 54. The water inlet pipe 53 enters the housing 51 from one side and exits the housing 51 from the other side. The water inlet pipe 53 is U-shaped and includes a first vertical section with an inlet 131, a horizontal section, and a second vertical section with an outlet 121. Part of the first vertical section and part of the second vertical section are inserted into the housing 51, the horizontal section is located inside the housing 51, and the second vertical section exposed outside the housing 51 serves as a connector 531.

[0037] Furthermore, there are three dispensing pipes 52 arranged side by side. The outlets 121 of the three dispensing pipes 52 are connected to the horizontal section respectively. A dispensing pump 521 is connected in series on the middle dispensing pipe 52, and a dispensing pump 521 is connected in series on the two dispensing pipes on both sides respectively. The span of the inlet 131 of the three dispensing pipes 52 is greater than the span of the outlet 121, so that the detergent dispensed by the three dispensing pipes 52 is repeatedly mixed with the water inlet pipe 53. The middle dispensing pipe 52 extends vertically, and the two dispensing pipes 52 on both sides include a first vertical section, a second vertical section and an inclined section respectively. The first vertical section is located upstream of the second vertical section, the inclined section is located between the two vertical sections, and the second vertical section is close to the middle dispensing pipe 52, so that the span of the inlet 131 of the three dispensing pipes 52 is greater than the span of the outlet 121.

[0038] Furthermore, the outer casing 51 is provided with a positioning groove that is adapted to each detergent dispenser 54, and the side of the detergent dispenser 54 from which the liquid is dispensed is embedded in the positioning groove.

[0039] like Figure 1 As shown, the cavity 11 of the adapter 1 further has a liquid inlet 131. When the plug 3 blocks a certain liquid outlet 121, the liquid entering the cavity 11 from the liquid inlet 131 cannot be discharged outward through the liquid outlet 121. The liquid outlet 121 of the water inlet pipe 53 is connected to the cavity 11 through the liquid inlet 131 of the adapter 1. Specifically, the adapter 1 has a liquid inlet pipe 13, and a water inlet channel is formed inside the liquid inlet pipe 13. The cavity 11 includes a transfer cavity 111 and a water inlet channel connected to the transfer cavity 111. The plug part 531 is inserted into the water inlet channel through the liquid inlet 131.

[0040] The adapter 1 has at least one liquid outlet pipe 12, and the cavity 11 has a liquid outlet channel formed by the liquid outlet pipe 12 being closed inside. The liquid outlet channel has a liquid outlet 121, and the cavity 11 has at least one liquid outlet 121. Each liquid outlet 121 is connected to the washing chamber of a washing device, thereby enabling a dispensing device 5 with the adapter 1 to simultaneously dispense detergent into the washing chambers of multiple washing devices. The washing devices can be dishwashers or washing machines.

[0041] Preferably, the adapter 1 has three liquid outlet pipes 12, which are arranged along the outer periphery of the transfer chamber 111, and the angle between two liquid outlet pipes 12 and another liquid outlet pipe 12 located between the two liquid outlet pipes 12 is 90°.

[0042] More preferably, the adapter 1 also has a liquid inlet pipe 13, and the cavity 11 also has a liquid inlet channel formed by the inner peripheral wall of the liquid inlet pipe 13. The liquid inlet channel has a liquid inlet 131. The four pipes are arranged in a circle around the outer periphery of the intermediate cavity 111, and the included angle between two adjacent pipes is 90°.

[0043] When liquid is fed in, the liquid enters the transfer chamber 111 from the inlet 131 of the liquid inlet channel. The transfer chamber 111 serves as a transition chamber. The liquid is then fed into the three outlet channels through the transfer chamber 111. Finally, the liquid enters the washing chamber of the corresponding washing device from the outlet 121 of each outlet channel.

[0044] Four pipes are arranged in a circle around the outer periphery of the transfer chamber 111, so that the liquid inlet pipe 13 and the three liquid outlet pipes 12 are located on the same horizontal plane, which facilitates the distribution of liquid from the transfer chamber 111 to each liquid outlet channel; the included angle between two adjacent pipes is 90°, so that the liquid can be distributed relatively evenly to each liquid outlet channel, thereby making the liquid inlet volume in the washing chamber of each washing device basically the same.

[0045] In an embodiment of the present invention, the detection device is a photoelectric switch 21, which is located at a position on the plug 3 that can be opened or blocked by the liquid outlet 121.

[0046] In specific embodiments of the present invention, at least a portion of the plug 3 can be inserted into the liquid outlet channel through the liquid outlet 121. The photoelectric switch 21 is disposed on the plug 3 inserted into the liquid outlet channel. When the plug 3 inserted into the liquid outlet channel blocks the liquid outlet 121, it is blocked; when the liquid outlet 121 is opened, it is opened. The plug 3 inserted into the liquid outlet channel forms a blocking area 31. The photoelectric switch 21 can be disposed on the blocking area 31.

[0047] More specifically, such as Figure 1As shown, the plug 3 has a columnar structure. When the plug 3 blocks the liquid outlet 121, the outer peripheral wall of the plug 3 is tightly fitted with the inner peripheral wall of the liquid outlet channel, thereby blocking the liquid outlet 121. In order to make the light intensity received by the power-off switch when the plug 3 blocks the liquid outlet 121 significantly different from the light intensity received by the plug 3 when the liquid outlet 121 is opened, and to improve the detection accuracy of the power-off switch, it is preferable to place the photoelectric switch 21 on the axial end face 311 of the plug 3 inserted into the liquid outlet channel.

[0048] Based on this, the outer peripheral wall of the plug 3 extends radially to form a protrusion 32. The sum of the radial dimension of the plug 3 and the radial dimension of the protrusion 32 is greater than the inner diameter of the liquid outlet channel. The protrusion 32 is connected to the adapter 1 via a flexible connecting arm 33.

[0049] The outer peripheral wall of the plug 3 protrudes radially to form a protrusion 32. When sealing the liquid outlet 121, the plug 3 is fully inserted into the liquid outlet channel, and the protrusion 32 fits against the end face of the liquid outlet pipe 12. The sum of the radial dimensions of the plug 3 and the protrusion 32 is greater than the inner diameter of the liquid outlet channel, thus sealing the gap between the outer peripheral wall of the plug 3 and the inner peripheral wall of the liquid outlet channel, further increasing the sealing strength of the liquid outlet 121.

[0050] like Figure 1 As shown, the protrusion 32 is connected to the adapter 1 via a flexible connecting arm 33, so that the plug 3 remains connected to the adapter 1 after the liquid outlet 121 is opened, preventing the plug 3 from being placed randomly, which would cause the photoelectric switch 21 on the plug 3 to not receive light intensity after the liquid outlet 121 is opened; the flexible connecting arm 33 ensures that the plug 3 can rotate at any angle and does not restrict the position of the plug 3 after the liquid outlet 121 is opened.

[0051] When the plug 3 blocks the outlet 121, the photoelectric switch 21 is shielded and is rarely or never illuminated by external light. When the plug 3 opens the outlet 121, the light intensity that the photoelectric switch 21 is illuminated is greater than the light intensity that the plug 3 can illuminate when it blocks the outlet 121.

[0052] The power off switch is connected to the controller of the dispensing device 5. The dispensing pump 521 of the dispensing device 5 is connected to the controller. The power off switch sends different signals to the controller according to the intensity of the light it is illuminated. The controller controls whether the dispensing pump 521 is turned on according to the intensity of the signal, thereby realizing whether the dispensing device 5 dispenses detergent into the washing chamber of the washing device.

[0053] Furthermore, such as Figure 3As shown, the detection signal of the liquid outlet 121 is obtained. If the detection signal strength of the liquid outlet 121 is greater than or equal to the preset signal strength of the dispensing device 5, then the plug 3 does not block the liquid outlet 121. The stronger the detection signal strength, the stronger the light intensity that the photoelectric switch 21 is illuminated, thus indicating that the plug 3 does not block the liquid outlet 121.

[0054] If the signal strength of the outlet 121 is greater than or equal to the preset signal strength of the dispensing device 5, then the plug 3 does not block the outlet 121, and the dispensing device 5 can dispense detergent into the washing chamber of the washing device. If the signal strength of the outlet 121 is less than the preset signal strength of the dispensing device 5, then the plug 3 blocks the outlet 121, and the dispensing device 5 cannot dispense detergent into the washing chamber of the washing device. By comparing the detection signal strength of the outlet 121 with the preset signal strength, the accuracy of determining whether the plug 3 blocks the outlet 121 can be improved.

[0055] The cavity 11 has three liquid outlets 121, which allows the dispensing device 5 to simultaneously dispense detergent into the washing chambers of the three washing devices when the three liquid outlets 121 are not blocked; if one of the liquid outlets 121 is blocked, and the other two liquid outlets 121 are not blocked, the dispensing device 5 dispenses detergent into the washing chambers of the two washing devices respectively through the two liquid outlets 121; by detecting whether the plug 3 blocks the liquid outlets 121, the dispensing status of the dispensing device 5 can be clearly known.

[0056] Furthermore, if the outlet 121 is not blocked, and the intensity of the detection signal at the outlet 121 is consistent with the intensity of the preset signal fed back by the corresponding washing device, then the dispensing device 5 can dispense detergent into the washing chamber through the outlet 121. To further accurately determine whether the dispensing device 5 can dispense detergent into the washing chamber through the outlet 121, based on the judgment that the outlet 121 is not blocked, the intensity of the detection signal at the outlet 121 is further compared with the intensity of the preset signal fed back by the corresponding washing device. If the two intensities are consistent, then the dispensing device 5 can dispense detergent into the washing chamber through the outlet 121; if the two intensities are inconsistent, then the dispensing device 5 cannot dispense detergent into the washing chamber through the outlet 121. When the intensity of the detection signal at the outlet 121 is inconsistent with the intensity of the preset signal fed back by the washing device, even if the outlet 121 is not blocked, detergent cannot be dispensed into the washing chamber of the washing device. At this time, the washing device may be performing a spin-drying process.

[0057] like Figure 2 As shown in the embodiment of the present invention, the outlet 121 of the water inlet pipe 53 is equipped with an adapter 1, and the dispensing device 5 also includes a detection device for detecting leakage at the assembly point of the water inlet pipe 53 and the adapter 1.

[0058] In this embodiment of the invention, the user can accurately know the leakage situation at the assembly point of the water inlet pipe 53 and the adapter 1 by detecting the leakage situation at the assembly point of the water inlet pipe 53 and the adapter 1; the detection device used to detect the leakage situation at the assembly point of the water inlet pipe 53 and the adapter 1 is a second detection device 6.

[0059] Specifically, the plug portion 531 of the outlet 121 of the water inlet pipe 53 is inserted into the cavity 11 of the adapter 1, and the detection device is disposed on the plug portion 531. Further, the plug portion 531 is inserted into the inlet channel through the inlet 131 of the adapter 1. Preferably, the detection device is disposed on the plug portion 531 located at the outlet 121 to improve the detection accuracy of the detection device in detecting water leakage at the assembly point.

[0060] The detection device is a pressure sensor that detects the liquid pressure at the assembly point of the water inlet pipe 53 and the adapter 1, or a flow sensor that detects the liquid flow rate at the assembly point of the water inlet pipe 53 and the adapter 1.

[0061] Furthermore, such as Figure 4 As shown, when the detection device is a pressure sensor, it detects the inlet pressure value at the assembly point to obtain the actual inlet pressure value. If the actual inlet pressure value is greater than or equal to the set pressure value, then there is no leakage at the assembly point.

[0062] If the actual inlet pressure is less than the set pressure, the pressure difference between the set pressure and the actual inlet pressure is obtained. If the pressure difference is greater than or equal to the set pressure difference, the assembly will not leak. If the pressure difference is less than the set pressure difference, the assembly will leak.

[0063] like Figure 5 As shown, when the detection device is a flow sensor, it detects the inlet flow rate at the assembly point to obtain the actual inlet flow rate. If the actual inlet flow rate is greater than the set flow rate but less than the maximum set flow rate, then there is no leakage at the assembly point.

[0064] The system detects the inlet flow rate at two time points and obtains the flow rate difference between the two inlet flow rate values. If the flow rate difference is greater than or equal to the set flow rate difference, the assembly will not leak. If the flow rate difference is less than the set flow rate difference, the assembly will leak.

[0065] Furthermore, an additional flow sensor is provided at each liquid outlet 121. The cavity 11 of the adapter 1 has three liquid outlets 121 and one liquid inlet 131. If the three liquid outlets 121 are not blocked, the flow sensor detects the liquid inlet flow rate of the liquid inlet 131, and the additional flow sensor detects the liquid outlet flow rate of the corresponding liquid outlet 121. If the sum of the three liquid outlet flow rates is less than the liquid inlet flow rate, then the assembly leaks water.

[0066] If the actual inflow rate is less than the set flow rate, or if the actual inflow rate is greater than the maximum set flow rate, then the assembly will leak.

[0067] like Figure 1 As shown in the embodiment of the present invention, a color-changing structure 4 is provided at the liquid outlet 121 of the cavity 11, which changes color when exposed to water.

[0068] In an embodiment of the present invention, a color-changing structure 4 is provided at the liquid outlet 121. When water leaks at the liquid outlet 121 of the adapter 1, the color-changing structure 4 changes color when it comes into contact with water, thereby enabling the user to accurately know the leakage situation of the liquid outlet 121.

[0069] Specifically, the color-changing structure 4 is located on the outer peripheral wall of the liquid outlet pipe 12.

[0070] Furthermore, the outlet pipe 12 has a columnar structure, and the outer peripheral wall of the outlet channel radially protrudes to form a ring of limiting protrusions 122. A color-changing structure 4 is provided on the outlet channel between the limiting protrusions 122 and the outlet 121. The color-changing structure 4 is a color-changing coating 41 applied to the outer peripheral wall of the outlet pipe 12. The color-changing coating 41 is arranged in a ring along the outer periphery of the outlet pipe 12, and one end of the color-changing coating 41 extends to the limiting protrusions 122, and the other end extends to the outlet 121. The limiting protrusions 122 and the protrusions 32 are connected by a flexible connecting arm 33.

[0071] The outlet 121 of the outlet pipe 12 is connected to the washing chamber of the washing device through a pipeline. The inlet of the pipeline is fitted on the outer peripheral wall of the outlet pipe 12 between the limiting protrusion 122 and the outlet 121. The limiting protrusion 122 is used to limit the position of the pipeline to prevent the pipeline from being overfitted on the outlet pipe, which would make it difficult to disassemble the pipeline. In addition, a limiting protrusion is also provided on the outer peripheral wall of the inlet pipe.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A dispensing device, comprising a detergent dispenser, a dispensing pipe, and a water inlet pipe, wherein the detergent dispenser is connected to the water inlet pipe via the dispensing pipe, and an adapter is installed at the outlet of the water inlet pipe, characterized in that, It also includes a detection device for detecting leaks at the assembly point of the water inlet pipe and the adapter. The adapter has a hollow interior, forming a cavity; It also includes an outer shell, and the water inlet pipe is U-shaped, including a first vertical section, a horizontal section and a second vertical section with a liquid inlet. Part of the first vertical section and part of the second vertical section are inserted into the outer shell, the horizontal section is located inside the outer shell, and the liquid outlet of the dispensing pipe is connected to the horizontal section; the detergent box is located outside the outer shell, and the dispensing pipe is located inside the outer shell; The second vertical section exposed outside the outer shell serves as a connector, which is inserted into the cavity, and the detection device is located on the connector.

2. The dispensing device according to claim 1, characterized in that, The adapter has a water inlet pipe, and a water inlet channel is formed inside the water inlet pipe. The cavity includes a transfer cavity and a water inlet channel connected to the transfer cavity. The plug part is inserted into the water inlet channel.

3. The dispensing device according to claim 2, characterized in that, The detection device is a pressure sensor that detects the liquid pressure at the assembly point of the inlet pipe and the adapter, or a flow sensor that detects the liquid flow rate at the assembly point of the inlet pipe and the adapter.

4. A control method for a dispensing device, characterized in that, Using the dispensing device according to any one of claims 1-3, the actual value of the liquid parameters flowing through the water inlet pipe and the adapter assembly is obtained. If the actual value of the liquid parameters is greater than the set value, the assembly leaks water.

5. The control method for the dispensing device according to claim 4, characterized in that, The inlet pressure at the assembly point is checked to obtain the actual inlet pressure. If the actual inlet pressure is greater than or equal to the set pressure, then the assembly point will not leak.

6. The control method for the dispensing device according to claim 5, characterized in that, If the actual inlet pressure is less than the set pressure, the pressure difference between the set pressure and the actual inlet pressure is obtained. If the pressure difference is greater than or equal to the set pressure difference, the assembly will not leak. If the pressure difference is less than the set pressure difference, the assembly will leak.

7. The control method for the dispensing device according to claim 4, characterized in that, The liquid inlet flow rate at the assembly point is detected to obtain the actual liquid inlet flow rate. If the actual liquid inlet flow rate is greater than the set flow rate but less than the maximum set flow rate, then the assembly point is not leaking.

8. The control method for the dispensing device according to claim 7, characterized in that, The system detects the inlet flow rate at two time points and obtains the flow rate difference between the two inlet flow rate values. If the flow rate difference is greater than or equal to the set flow rate difference, the assembly will not leak. If the flow rate difference is less than the set flow rate difference, the assembly will leak.

9. The control method for the dispensing device according to claim 7, characterized in that, If the actual inflow rate is less than the set flow rate, or if the actual inflow rate is greater than the maximum set flow rate, then the assembly will leak.

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