An additive dispensing structure and a laundry treating apparatus

Abstract

This utility model discloses an additive dispensing structure for dispensing additives into the garment processing cylinder of a garment processing device. The additive dispensing structure includes a liquid storage chamber, a temporary storage chamber, an air extraction component, and a negative pressure pipe with a suction port. The temporary storage chamber connects the liquid storage chamber to the air inlet of the air extraction component, and the air outlet of the air extraction component is connected to the negative pressure pipe. The suction port is connected to the liquid outlet of the temporary storage chamber through a switchable liquid delivery pipeline. The temporary storage chamber has an disconnected state (disconnected from the atmosphere) and a connected state (connected to the atmosphere). The additive dispensing structure has a liquid extraction state and a liquid delivery state. In the liquid extraction state, the air extraction component is used to extract the gas in the temporary storage chamber to generate a negative pressure, so that the additive in the liquid storage chamber is quantitatively supplied to the temporary storage chamber under the action of pressure difference. In the liquid delivery state, the air extraction component is used to generate a negative pressure at the suction port by airflow through the negative pressure pipe, so that the additive in the temporary storage chamber is extracted into the negative pressure pipe and then sprayed into the garment processing cylinder. In addition, a garment processing device is also disclosed.

Description

Technical Field

[0001] This utility model relates to the field of clothing processing equipment technology, and in particular to an additive dispensing structure and clothing processing equipment. Background Technology

[0002] Clothing treatment devices require an additive dispensing structure to supply detergent and other additives needed for clothing treatment into the treatment drum. Existing additive dispensing structures typically use water to dilute the additives before adding them to the drum or atomize them pneumatically to deliver them as a spray. The additive dispensing structure that delivers additives as a spray includes a reservoir, a nozzle, a delivery line, and a liquid pump located on the delivery line. The delivery line connects the reservoir and the nozzle, and the liquid pump directly draws liquid from the reservoir and supplies it to the nozzle to form a spray that enters the treatment drum. Because there is usually a significant height difference between the nozzle and the reservoir, this height difference leads to an excessively long delivery line, resulting in a large amount of residual liquid in the line. Furthermore, the dispensing accuracy depends on the accuracy of the liquid pump (e.g., the displacement per revolution of a peristaltic pump) and the precision of its control. Wear of the liquid pump and changes in liquid viscosity can affect accuracy, leading to inaccurate spray volume control. In addition, a large height difference can also worsen the spray effect, necessitating an increase in the power of the liquid pump, thus increasing costs. Utility Model Content

[0003] To address the shortcomings and deficiencies of the existing technology, this utility model provides an additive dispensing structure and clothing treatment equipment that can improve the accuracy of spray volume control without increasing the power of the suction component, thereby reducing costs.

[0004] To achieve the aforementioned technical objectives, this utility model provides an additive dispensing structure for dispensing additives into the garment processing cylinder of a garment processing device. The additive dispensing structure includes a liquid storage chamber, a temporary storage chamber, an air extraction component, and a negative pressure pipe with a suction port. The temporary storage chamber connects the liquid storage chamber to the air inlet of the air extraction component, and the air outlet of the air extraction component is connected to the negative pressure pipe. The suction port is connected to the liquid outlet of the temporary storage chamber via a switchable liquid delivery pipeline. The temporary storage chamber has both an disconnected state (disconnected from the atmosphere) and a connected state (connected to the atmosphere). The additive dispensing structure has both a liquid extraction state and a liquid delivery state.

[0005] Under the liquid extraction state: the temporary storage chamber is in a disconnected state from the atmosphere and the infusion pipeline is disconnected. The air extraction device is used to extract the gas in the temporary storage chamber to generate negative pressure, so that the additive in the liquid storage chamber is quantitatively supplied to the temporary storage chamber under the action of pressure difference.

[0006] In the infusion state: the temporary storage chamber is in a connected state with the atmosphere and the infusion pipeline is connected. The air extraction device is used to make the air flow through the negative pressure tube to generate negative pressure at the suction port, so that the additive in the temporary storage chamber is drawn into the negative pressure tube and then sprayed into the clothing treatment drum.

[0007] In the above-mentioned additive dispensing structure, the additive dispensing structure further includes a water storage chamber with an air inlet, the water storage chamber is connected to a switchable water inlet pipe and a switchable water outlet pipe, and the water storage chamber is connected to a temporary storage chamber through the water outlet pipe.

[0008] In the above-mentioned additive dispensing structure, the additive dispensing structure also has a water inlet state, in which the water outlet pipe is in a connected state.

[0009] Water in the water storage chamber enters the temporary storage chamber under the action of gravity; or the air extraction device is used to extract the gas in the temporary storage chamber to generate negative pressure so that water in the water storage chamber flows into the temporary storage chamber.

[0010] In the above-mentioned additive dispensing structure, the temporary storage chamber is connected to an air inlet pipe that communicates with the atmosphere and a vent valve for controlling the opening and closing of the air inlet pipe. When the vent valve is closed, the temporary storage chamber is in a disconnected state from the atmosphere, and when the vent valve is open, the temporary storage chamber is in a connected state to the atmosphere.

[0011] In the above-mentioned additive delivery structure, the liquid storage chamber is set lower than the temporary storage chamber. The liquid storage chamber is connected to the top of the temporary storage chamber through an independent first pipeline. The liquid outlet is located at the bottom of the temporary storage chamber. The infusion pipeline is equipped with a first one-way valve, which only allows the fluid in the infusion pipeline to flow from the liquid outlet to the suction port.

[0012] In the above-mentioned additive dispensing structure, a filter screen is provided in the temporary storage chamber, and the filter screen divides the interior of the temporary storage chamber into a first temporary storage chamber and a second temporary storage chamber. The wall of the first temporary storage chamber is provided with an inlet that communicates with the liquid storage chamber, and the wall of the second temporary storage chamber is provided with an outlet.

[0013] In the above-mentioned additive delivery structure, the additive delivery structure further includes a main pipeline, a first branch pipeline, and a second branch pipeline. One end of the main pipeline is connected to the temporary storage chamber, and the other end is connected to one end of the first branch pipeline and one end of the second branch pipeline through a control valve. The other ends of the first branch pipeline and the second branch pipeline are respectively connected to the liquid storage chamber and the suction port. The control valve is used to control the on / off state of the main pipeline and the two branch pipelines. The main pipeline and the second branch pipeline are connected to form the infusion pipeline.

[0014] In the above-mentioned additive dispensing structure, an overflow port is provided on the side wall of the temporary storage chamber. The overflow port is set higher than the liquid outlet. The overflow port is connected to an overflow pipe. A second one-way valve is provided on the overflow pipe. The second one-way valve only allows liquid to flow outward.

[0015] In the above additive dispensing structure, the air extraction component is an air pump or a fan.

[0016] This utility model also provides a clothing processing device, including a body, at least one clothing processing cylinder, and the additive dispensing structure described in any of the above technical solutions, wherein the liquid storage chamber, temporary storage chamber, air extraction component, and negative pressure pipe are arranged sequentially on the body from low to high.

[0017] By adopting the above technical solution, this utility model has the following advantages:

[0018] 1. In the liquid extraction state, the additive delivery structure of this embodiment uses the air extraction device to create a negative pressure in the temporary storage chamber. The pressure difference is used to quantitatively supply the additive in the storage chamber to the temporary storage chamber. In the infusion state, the air extraction device draws gas from the atmosphere to generate a high-speed airflow. The high-speed airflow flows through the negative pressure pipe and generates a negative pressure at the suction port. The additive in the temporary storage chamber is drawn into the negative pressure pipe under the action of the pressure difference. The additive is atomized into fine droplets by the high-speed airflow in the negative pressure pipe, which forms a spray and is sprayed into the clothing treatment cylinder to achieve more uniform spraying and coverage on the clothing.

[0019] Therefore, in this embodiment, the liquid only flows through the temporary storage chamber, the negative pressure pipe, and the infusion pipeline, while the suction component only comes into contact with the gas and not the liquid throughout the process. Compared with the problems of contamination, crystallization blockage, or corrosion caused by the pump directly contacting the liquid and pushing the liquid in the prior art, the technical solution of this embodiment can avoid the risk of contamination, crystallization blockage, or corrosion of the suction component, and significantly improve the service life of the suction component. In addition, compared with the existing infusion pipeline located between the liquid storage chamber and the nozzle, this embodiment can effectively shorten the length of the infusion pipeline (i.e., the pipeline between the liquid outlet and the suction port) by setting a temporary storage chamber as a relay, so as to reduce the liquid delivery height and thus eliminate the need to increase the power of the suction component, thereby reducing costs. Moreover, the shortening of the infusion pipeline can also reduce the amount of residual liquid in the infusion pipeline, thereby reducing the loss of additives in the infusion pipeline during the infusion state, thereby improving the control accuracy of the spray volume. Finally, since this embodiment can complete both liquid extraction and liquid delivery using the same suction component, the additive delivery structure is further simplified, thereby reducing manufacturing costs.

[0020] 2. The additive dispensing structure also includes a water storage chamber with an air inlet. The water storage chamber is connected to a switchable water inlet pipe and a switchable water outlet pipe. The water storage chamber is connected to the temporary storage chamber via the water outlet pipe. This design allows water to be introduced into the temporary storage chamber through the open water inlet pipe, water storage chamber, and open water outlet pipe when cleaning the temporary storage chamber or infusion lines. This dilutes the additives in the temporary storage chamber and cleans the additives on its inner walls. During infusion, activating the air extraction device draws water into the negative pressure pipe through the negative pressure suction port and sprays it out with a high-speed airflow. This cleans the inside of the negative pressure pipe and the suction port area, significantly reducing the risk of blockage caused by additive residues, maintaining long-term stable system operation, and reducing maintenance requirements. Furthermore, when only water needs to be supplied to the laundry treatment drum, the water storage chamber can supply water to the cleaned temporary storage chamber, and activating the air extraction device allows water to be sprayed from the negative pressure pipe into the laundry treatment drum.

[0021] 3. The additive dispensing structure also features a water inlet mode. In this mode, the outlet pipe is connected, and water in the storage chamber enters the temporary storage chamber under gravity. Alternatively, an air extraction device can be used to extract gas from the temporary storage chamber, creating negative pressure to allow water from the storage chamber to flow into the temporary storage chamber. This design allows for the dilution of the additive in the temporary storage chamber, as well as the cleaning of the temporary storage chamber and the infusion pipeline between the outlet and suction port during the infusion stage, and also enables the supply of water to the garment processing drum.

[0022] 4. The temporary storage chamber is connected to an air inlet pipe that communicates with the atmosphere and a vent valve for controlling the opening and closing of the air inlet pipe. When the vent valve is closed, the temporary storage chamber is in an open state, disconnected from the atmosphere; when the vent valve is open, the temporary storage chamber is in an open state, communicating with the atmosphere. This design allows for switching of the temporary storage chamber's state by controlling the vent valve. If the vent valve is preferably an electrically controlled valve, it enables electric control of the additive dispensing structure, making the control method simpler and more reliable.

[0023] 5. The storage chamber is positioned lower than the temporary storage chamber. The storage chamber is connected to the top of the temporary storage chamber via a separate first pipeline, and the outlet is located at the bottom of the temporary storage chamber. A first one-way valve is installed on the infusion pipeline, which only allows fluid in the infusion pipeline to flow from the outlet towards the suction port. This design ensures that the end of the first pipeline connected to the temporary storage chamber is higher than the liquid level in the temporary storage chamber, achieving physical isolation to prevent backflow. This prevents the additive in the temporary storage chamber from flowing back into the storage chamber during infusion, thus eliminating the need for an on / off valve on the first pipeline. The outlet being located at the bottom of the temporary storage chamber allows the liquid in the temporary storage chamber to flow through the outlet and into the suction port under the combined action of negative pressure and gravity during infusion, reducing the amount of additive residue in the temporary storage chamber and further improving the control accuracy of the spray volume. Finally, the design of the first one-way valve prevents the additive in the infusion pipeline from flowing back.

[0024] 6. A filter screen is installed inside the temporary storage chamber, dividing the interior into a first temporary storage chamber and a second temporary storage chamber. The wall of the first temporary storage chamber has an inlet that communicates with the liquid storage chamber, and the wall of the second temporary storage chamber has an outlet. The filter screen can filter impurities, solving the problems of easy clogging of the negative pressure pipe, inaccurate spray volume, and unstable spray effect.

[0025] 7. The additive dispensing structure also includes a main pipeline, a first branch pipeline, and a second branch pipeline. One end of the main pipeline is connected to the temporary storage chamber, and the other end is connected to one end of the first branch pipeline and one end of the second branch pipeline via a control valve. The other ends of the first and second branch pipelines are connected to the liquid storage chamber and the suction port, respectively. The control valve is used to control the on / off state of the main pipeline and the two branch pipelines. The main pipeline and the second branch pipeline are connected to form the infusion pipeline. This design saves on the total length of the pipeline and installation space.

[0026] 8. An overflow port is provided on the side wall of the temporary storage chamber, and the overflow port is set higher than the liquid outlet. The overflow port is connected to an overflow pipe, and the overflow pipe is equipped with a second one-way valve. The second one-way valve only allows liquid to flow outward. With this design, when the liquid level rises to the height of the overflow port, excess additive will automatically flow out through the overflow port, and the second one-way valve will automatically open to allow liquid to flow out, thereby controlling the dosage of additive in the temporary storage chamber. In addition, it also ensures that the space above the overflow port in the temporary storage chamber forms a space for storing air, and the opening of the second one-way valve can prevent air from entering the temporary storage chamber through the overflow pipe, so as to create negative pressure in the temporary storage chamber during the liquid extraction stage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the gas and liquid flow in the additive dispensing structure under the liquid extraction state in Embodiment 1 of this utility model;

[0028] Figure 2 This is a simplified diagram of the temporary storage cavity in Embodiment 1 of this utility model;

[0029] Figure 3 This is a schematic diagram of the gas and liquid flow in the infusion state of the additive delivery structure in Embodiment 1 of this utility model;

[0030] Figure 4 This is a schematic diagram of the gas and liquid flow in the additive dispensing structure under liquid extraction state in Embodiment 2 of this utility model;

[0031] Figure 5 This is a simplified diagram of the temporary storage cavity in Embodiment 2 of this utility model;

[0032] Figure 6 This is a schematic diagram of the gas and liquid flow in the infusion state of the additive delivery structure in Embodiment 2 of this utility model;

[0033] Figure 7This is a schematic diagram of the gas and liquid flow in the additive dispensing structure under the liquid extraction state in Embodiment 3 of this utility model;

[0034] Figure 8 This is a schematic diagram of the gas and liquid flow in the infusion state of the additive delivery structure in Embodiment 3 of this utility model;

[0035] Figure 9 This is a schematic diagram of the gas and liquid flow in the additive dispensing structure under the liquid extraction state in Embodiment 4 of this utility model;

[0036] Figure 10 This is a schematic diagram of the gas and liquid flow in the infusion state of the additive delivery structure in Embodiment 4 of this utility model;

[0037] In the diagram, 01 is the main pipeline; 02 is the first branch pipeline; 03 is the second branch pipeline; and 04 is the first pipeline.

[0038] 001. Clothing processing drum;

[0039] 100. Liquid storage chamber; 200. Temporary storage chamber; 201. Filter screen; 202. Air inlet pipe; 203. Vent valve; 210. Overflow port; 220. Liquid outlet; 230. First connection port; 240. Second connection port; 250. Liquid inlet; 300. Air extraction component; 400. Negative pressure pipe; 500. Infusion pipeline; 510. First one-way valve; 600. Control valve; 700. Water storage chamber; 710. Air inlet; 800. Water inlet pipeline; 810. Water inlet valve; 900. Water outlet pipeline; 910. Water outlet valve; 1000. Overflow pipe; 1100. Second one-way valve. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device / component 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 the present invention.

[0041] Example 1

[0042] Combination Figures 1 to 3As shown, the additive dispensing structure of this embodiment is used to dispense additives into the clothing processing cylinder 001 of the clothing processing device. The additive dispensing structure includes a liquid storage chamber 100 for storing additives, a temporary storage chamber 200, an air extraction component 300, and a negative pressure pipe 400 with a suction port. The additives can be detergents, fabric softeners, etc. The air extraction component 300 can be an air pump or a fan, preferably an air pump, and the negative pressure pipe 400 can be a two-fluid nozzle, with the suction port located at the two-fluid nozzle. On the side wall, the temporary storage chamber 200 connects the liquid storage chamber 100 to the air inlet of the suction device 300. The air outlet of the suction device 300 is connected to one end of the negative pressure pipe 400, and the other end of the negative pressure pipe 400 is connected to the clothing treatment cylinder 001. The suction port and the liquid outlet of the temporary storage chamber 200 are connected through a switchable infusion pipeline 500. The temporary storage chamber 200 has a disconnected state (disconnected from the atmosphere) and a connected state (connected to the atmosphere). The additive dispensing structure has a suction state and an infusion state.

[0043] In the liquid extraction state: the temporary storage chamber 200 is in a disconnected state from the atmosphere and the infusion line 500 is disconnected. The air extraction device 300 is used to extract the gas in the temporary storage chamber 200 to generate negative pressure, so that the additive in the liquid storage chamber 100 is quantitatively supplied to the temporary storage chamber 200 under the action of pressure difference.

[0044] In the infusion state: the temporary storage chamber 200 is in a state of communication with the atmosphere and the infusion pipeline 500 is connected. The air extraction device 300 is used to make the air flow through the negative pressure pipe 400 to generate negative pressure at the suction port, so that the additive in the temporary storage chamber 200 is extracted into the negative pressure pipe 400 and then sprayed into the clothing treatment drum.

[0045] In this embodiment, the additive delivery structure operates as follows: In the liquid extraction state, the vacuum pump 300 operates to create a negative pressure in the temporary storage chamber 200. The pressure difference is used to quantitatively supply the additive from the liquid storage chamber 100 to the temporary storage chamber 200. In the infusion state, the vacuum pump 300 operates to extract gas from the atmosphere to generate a high-speed airflow. The high-speed airflow flows through the negative pressure pipe 400 and generates a negative pressure at the suction port. Under the action of the pressure difference, the additive in the temporary storage chamber 200 is extracted into the negative pressure pipe 400. The additive is entrained and sheared by the high-speed airflow in the negative pressure pipe 400 and atomized into fine droplets, forming a spray that is sprayed into the clothing treatment cylinder to achieve more uniform spraying and coverage on the clothing. Finally, since this embodiment uses the same vacuum pump 300 to complete both liquid extraction and infusion, the additive delivery structure is further simplified, thereby reducing manufacturing costs.

[0046] Therefore, in this embodiment, the liquid only flows through the temporary storage chamber 200, the negative pressure pipe 400, and the infusion line 500, while the suction component 300 only comes into contact with gas and not liquid throughout the process. Compared with the problems of contamination, crystallization blockage, or corrosion caused by the pump directly contacting the liquid and pushing the liquid in the prior art, the technical solution of this embodiment can avoid the risk of contamination, crystallization blockage, or corrosion of the suction component 300, and significantly improve the service life of the suction component 300. In addition, compared with the existing infusion line located between the liquid storage chamber and the nozzle, this embodiment can effectively shorten the length of the infusion line 500 (i.e., the line between the liquid outlet and the suction port) by setting the temporary storage chamber 200 as a relay, so as to reduce the infusion height and thus eliminate the need to increase the power of the suction component 300, thereby reducing the cost. Moreover, the shortening of the infusion line 500 can also reduce the amount of residual liquid in the infusion line 500, thereby reducing the loss of additives in the infusion line 500 during infusion, thereby improving the control accuracy of the spray volume.

[0047] Specifically, in this embodiment, the liquid storage chamber 100, temporary storage chamber 200, suction component 300, and negative pressure pipe 400 are arranged sequentially from low to high on the body of the clothing processing device. The additive dispensing structure also includes a main pipeline 01, a first branch pipeline 02, and a second branch pipeline 03. One end of the main pipeline 01 is connected to the bottom wall of the temporary storage chamber 200, and the other end is connected to one end of the first branch pipeline 02 and one end of the second branch pipeline 03 via a control valve 600. The other end of the first branch pipeline 02 is connected to the liquid storage chamber 100, and the other end of the second branch pipeline 03 is connected to the suction port. The control valve 600 is used to control the on / off state of the main pipeline 01 and the two branch pipelines. The main pipeline 01 and the second branch pipeline 03 are connected to form an infusion pipeline 500, and the control valve 600 is used to control the on / off state of the infusion pipeline 500. This design can save the total length of the pipeline and installation space.

[0048] In addition, the additive dispensing structure also includes a water storage chamber 700 with an air inlet 710. The water storage chamber 700 is connected to a switchable water inlet pipe 800 and a switchable water outlet pipe 900. The water inlet pipe 800 is equipped with an inlet valve 810, which controls the on / off state of the water inlet pipe 800 by opening and closing the inlet valve 810. The water outlet pipe 900 is equipped with an outlet valve 910, which controls the state of the water outlet pipe by opening and closing the outlet valve 910. The water storage chamber 700 is connected to the temporary storage chamber 200 through the water outlet pipe 900. The height of the water storage chamber 700 is higher than that of the temporary storage chamber 200, and the water outlet pipe 900 is connected to the bottom wall of the water storage chamber 700 so that the water in the water storage chamber 700 flows into the temporary storage chamber 200 by its own weight when the water outlet pipe 900 is connected. The air inlet 710 is located at the top of the side wall of the water storage chamber 700 or the top wall of the water storage chamber 700. With this design, when it is necessary to clean the temporary storage chamber 200 and the infusion line 500, water can be introduced into the temporary storage chamber 200 through the open inlet water line 800, the water storage chamber 700, and the open outlet water line 900 to dilute the additives in the temporary storage chamber 200 and clean the additives on the inner wall of the temporary storage chamber 200. In the infusion state, the air extraction device 300 is activated, and the water flow is drawn into the negative pressure pipe 400 by the negative pressure generated by the suction port of the negative pressure pipe, and is sprayed out with the high-speed airflow to form a water mist, thereby cleaning the inside of the negative pressure pipe 400 and the suction port area, greatly reducing the risk of blockage caused by additive residues, maintaining the long-term stable operation of the system, and reducing maintenance needs. In addition, when it is only necessary to introduce water into the clothes processing drum, the water storage chamber 700 can supply water to the cleaned temporary storage chamber 200, and the air extraction device 300 can be activated to spray water into the clothes processing drum through the negative pressure pipe 400 for water supply.

[0049] The additive dispensing structure in this embodiment also has a water inlet state. In the water inlet state, the control valve 600 is activated to disconnect the connection between the first branch pipe 02 and the main pipe 01. When there is water in the water storage chamber 700, opening the water outlet valve 910 will keep the water outlet pipe 900 connected, allowing the water in the water storage chamber 700 to enter the temporary storage chamber 200 under gravity. When there is no water in the water storage chamber 700, both the water inlet valve 810 and the water outlet valve 910 are opened simultaneously, so that both the water inlet pipe 800 and the water outlet pipe 900 are connected. In the connected state, water first enters the water storage chamber 700, and then the water in the water storage chamber 700 enters the temporary storage chamber 200 under the action of gravity. When the temporary storage chamber 200 contains additives, the additives in the temporary storage chamber 200 can be diluted by introducing water into the temporary storage chamber 200. At the same time, the temporary storage chamber 200 and the infusion pipeline 500 can be cleaned during the infusion stage. When the temporary storage chamber 200 is clean, water can be sprayed into the clothing treatment drum 001 by introducing water into the temporary storage chamber 200 during the infusion stage.

[0050] Finally, in this embodiment, the temporary storage chamber 200 is provided with an overflow port 210, a liquid outlet 220, a first connection port 230, and a second connection port 240. The liquid outlet 220 is located on the bottom wall of the temporary storage chamber 200 and is connected to the main pipeline 01. In this way, under the combined action of negative pressure and gravity, the liquid in the temporary storage chamber 200 flows through the liquid outlet 220 and the infusion pipeline 500 to the suction port, thereby reducing the residual amount of additives in the temporary storage chamber 200 and further improving the control accuracy of the spray volume; and when the main pipeline 01 is connected to the first branch pipeline 02 and When in the liquid extraction state, the liquid outlet 220 is used as the liquid inlet. The first connection port 230 is connected to the water outlet pipe 900. The second connection port 240 is located at the top of the temporary storage chamber 200 and is connected to the air inlet of the air extraction device 300. The overflow port 210 is located on the side wall of the temporary storage chamber 200 and is set higher than the liquid outlet 220. The overflow port 210 is connected to the overflow pipe 1000. The overflow pipe 1000 is equipped with a second one-way valve 1100. The second one-way valve 1100 only allows liquid to flow out of the temporary storage chamber 200 and prohibits liquid from flowing into the temporary storage chamber 200. With this design, when the liquid level rises to the height of the overflow port 210, excess additive will automatically flow out through the overflow port 210, and the second one-way valve 1100 will automatically open to allow the liquid to flow out, thereby controlling the dosage in the temporary storage chamber 200 and achieving quantitative control. In addition, it can also ensure that the space above the overflow port in the temporary storage chamber 200 forms a space for storing air, and the disconnection of the second one-way valve 1100 can prevent air from entering the temporary storage chamber 200 through the overflow pipe 1000, so as to create negative pressure in the temporary storage chamber 200 during the liquid extraction stage.

[0051] The following will describe in detail the state of the additive dosing structure when it is used in this embodiment:

[0052] During the liquid extraction process: Control valve 600 disconnects the main pipeline 01 from the second branch pipeline 03 (i.e., infusion pipeline 500 is in the disconnected state) and connects the first branch pipeline 02 to the main pipeline 01. The outlet valve 910 is closed, thus placing the temporary storage chamber 200 in a disconnected state from the atmosphere. Figure 1 As shown, the gas extraction unit 300 extracts the gas in the temporary storage chamber 200 to generate a negative pressure, so that the additive in the liquid storage chamber 100 is quantitatively supplied to the temporary storage chamber 200 under the action of the pressure difference.

[0053] In the water inlet state: control valve 600 disconnects the first branch pipe 02 from the main pipe 01, and outlet valve 910 opens to keep outlet pipe 900 connected. Inlet valve 810 can be closed when there is water in storage chamber 700, and needs to be opened when there is no water in storage chamber 700, so that the water in storage chamber 700 flows to temporary storage chamber 200 under the action of gravity through outlet pipe 900. Since there is overflow port 210, after water inlet stops, all the water in storage chamber 700 flows to temporary storage chamber 200.

[0054] During infusion: Control valve 600 disconnects the first branch line 02 from the main line 01 and connects the second branch line 03 to the main line 01 (i.e., infusion line 500 is in a connected state). At this time, inlet valve 810 is closed and outlet valve 910 is opened, so that temporary storage chamber 200 is in a connected state with the atmosphere. Figure 3 As shown, the air extraction unit 300 works by drawing in the outside atmosphere through the air inlet 710 and the water outlet pipe 900 (since there is no water in the water storage chamber 700, gas can flow), and the airflow passes through the negative pressure pipe 400 to generate negative pressure at the suction port, so that the additive in the temporary storage chamber 200 is drawn into the negative pressure pipe 400 and then sprayed into the clothing treatment drum 001 in the form of water mist.

[0055] It should be noted that when the additive is a low-concentration additive or when there is no need to clean the temporary storage chamber 200 and the infusion line 500, it is not necessary to enter the water inlet state, that is, the water inlet valve 810 should not be opened to avoid water in the water storage chamber 700. In this way, after the liquid extraction state, it can directly enter the infusion state to shorten the addition time of the additive dispensing structure. Alternatively, when it is only necessary to supply water to the clothing treatment drum 001, it is not necessary to enter the liquid extraction state. That is, the water inlet state is executed first to fill the temporary storage chamber 200 with water before entering the infusion state to supply water to the clothing treatment drum 001.

[0056] It is understood that in other embodiments of this utility model, the water storage chamber may be set lower than the temporary storage chamber. In this case, the water in the water storage chamber cannot enter the temporary storage chamber by gravity. At this time, the gas in the temporary storage chamber can be extracted by the working of the air extraction device to generate negative pressure in the temporary storage chamber so that the water in the water storage chamber flows into the temporary storage chamber under the action of pressure difference.

[0057] Example 2

[0058] like Figures 4 to 6As shown, unlike Embodiment 1, in this embodiment, the top of the temporary storage chamber 200 is provided with an inlet 250, the storage chamber 100 is connected to the inlet 250 through an independent first pipeline 04, and the outlet 220 is located at the bottom of the temporary storage chamber 200. The infusion pipeline 500 is provided with a first one-way valve 510. The first one-way valve 510 only allows the fluid in the infusion pipeline 500 to flow from the outlet 220 to the suction port. In this embodiment, the first one-way valve 510 is only opened when a negative pressure is generated at the suction port to allow the fluid in the infusion pipeline 500 to flow from the outlet 220 to the suction port. That is, the first one-way valve 510 does not need to operate actively and can be passively opened under the suction action. This design allows the end of the first pipeline 04 connected to the temporary storage chamber 200 to be higher than the liquid level in the temporary storage chamber 200, thus achieving physical isolation to prevent backflow. This prevents the additive in the temporary storage chamber 200 from flowing back into the storage chamber 100 during infusion, eliminating the need for an on / off valve on the first pipeline 04. The outlet 220 is located at the bottom of the temporary storage chamber 200, allowing the liquid in the temporary storage chamber 200 to flow through the outlet 220 and the infusion pipeline 500 to the suction port under the combined action of negative pressure and gravity during infusion, thereby reducing the amount of additive residue in the temporary storage chamber 200 and further improving the control accuracy of the spray volume. Finally, the design of the first one-way valve 510 prevents the additive in the infusion pipeline 500 from flowing back.

[0059] In addition, such as Figure 5 As shown, in this embodiment, a filter screen 201 is provided inside the temporary storage chamber 200. The filter screen 201 divides the interior of the temporary storage chamber 200 into a first temporary storage chamber and a second temporary storage chamber distributed to the left and right. The liquid inlet 250 and the first connection port 230 are both located on the wall of the first temporary storage chamber, while the liquid outlet 220 is located on the bottom wall of the second temporary storage chamber. The second connection port 240 can be located at the top of either the first or the second temporary storage chamber. Impurities can be filtered through the filter screen 201, solving the problems of easy clogging of the negative pressure pipe 400, inaccurate spray volume, and unstable spray effect.

[0060] In this embodiment, the state of the additive delivery structure during use is described in detail:

[0061] In the liquid extraction state: the outlet valve 910 is closed to keep the temporary storage chamber 200 in an open state, disconnected from the atmosphere; the first one-way valve 510 is open to prevent liquid from flowing from the suction port to the outlet port 220. Figure 4 As shown, after the gas in the temporary storage chamber 200 is extracted by the working of the gas extraction component 300 to generate negative pressure, the additive in the liquid storage chamber 100 is quantitatively supplied to the temporary storage chamber 200 under the action of pressure difference.

[0062] In the water inlet state: all outlet valves 910 are open to keep the outlet pipe 900 connected, while the inlet valve 810 can be closed when there is water in the water storage chamber 700, and needs to be opened when there is no water in the water storage chamber 700, so that the water in the water storage chamber 700 flows to the temporary storage chamber 200 under the action of gravity through the outlet pipe 900. Since there is an overflow port 210, after the water inlet stops, all the water in the water storage chamber 700 flows to the temporary storage chamber 200.

[0063] During infusion: Inlet valve 810 is closed, outlet valve 910 is open, so that the temporary storage chamber 200 is in a state of communication with the atmosphere, such as... Figure 6 As shown, the suction device 300 is activated so that the airflow passes through the negative pressure pipe 400 and generates negative pressure at the suction port, thereby opening the first one-way valve 510 so that the liquid in the infusion line 500 flows from the outlet 220 to the suction port (i.e., the infusion line 500 is in a connected state), so that the additive in the temporary storage chamber 200 is drawn into the negative pressure pipe 400 and then sprayed into the clothing treatment drum 001 in the form of water mist.

[0064] It should be noted that when the additive is a low-concentration additive or when there is no need to clean the temporary storage chamber 200 and the infusion line 500, it is not necessary to enter the water inlet state, that is, the water inlet valve 810 should not be opened to avoid water in the water storage chamber 700. In this way, after the liquid extraction state, it can directly enter the infusion state to shorten the addition time of the additive dispensing structure. Alternatively, when it is only necessary to supply water to the clothing treatment drum 001, it is not necessary to enter the liquid extraction state. That is, the water inlet state is executed first to fill the temporary storage chamber 200 with water before entering the infusion state to supply water to the clothing treatment drum 001.

[0065] The other structures of Embodiment 2 are the same as those of Embodiment 1, and will not be described in detail here.

[0066] Example 3

[0067] like Figure 7 and Figure 8 As shown, compared with Embodiment 1, the difference in this embodiment is that the water storage chamber, inlet pipe, and outlet pipe are omitted. In this case, the temporary storage chamber 200 is connected to an air inlet pipe 202 communicating with the atmosphere and an air vent valve 203 for controlling the opening and closing of the air inlet pipe 202. When the air vent valve 203 is closed, the temporary storage chamber 200 is in an open state, disconnected from the atmosphere; when the air vent valve 203 is open, the temporary storage chamber 200 is in a connected state, communicating with the atmosphere. With this design, the state switching of the temporary storage chamber 200 can be achieved by controlling the air vent valve 203. If the air vent valve 203 is preferably an electrically controlled valve, electric control of the additive dispensing structure can be achieved, making the control method simpler and more reliable.

[0068] In this embodiment, the state of the additive delivery structure during use is described in detail:

[0069] During the liquid extraction process: Control valve 600 disconnects the main pipeline 01 from the second branch pipeline 03 (i.e., infusion pipeline 500 is in a bidirectional disconnected state) and connects the first branch pipeline 02 to the main pipeline 01. Vent valve 203 is closed, so that the temporary storage chamber 200 is in a disconnected state from the atmosphere. Figure 7 As shown, the gas extraction unit 300 extracts the gas in the temporary storage chamber 200 to generate a negative pressure, so that the additive in the liquid storage chamber 100 is quantitatively supplied to the temporary storage chamber 200 under the action of pressure difference.

[0070] During infusion: Control valve 600 disconnects the first branch line 02 from the main line 01 and connects the second branch line 03 to the main line 01 (i.e., infusion line 500 is in a connected state). At this time, vent valve 203 opens, so that the temporary storage chamber 200 is in a connected state with the atmosphere. Figure 8 As shown, the suction device 300 is activated so that the airflow passes through the negative pressure pipe 400 and generates negative pressure at the suction port, so that the additive in the temporary storage chamber 200 is drawn into the negative pressure pipe 400 and then sprayed into the clothing treatment drum 001.

[0071] The other structures in Embodiment 3 are the same as those in Embodiment 1, and will not be described in detail here.

[0072] Example 4

[0073] like Figure 9 and Figure 10 As shown, compared with Embodiment 2, the difference in this embodiment is that the water storage chamber, inlet pipe, and outlet pipe are omitted. In this case, the temporary storage chamber 200 is connected to an air inlet pipe 202 that communicates with the atmosphere and an air vent valve 203 for controlling the opening and closing of the air inlet pipe 202. When the air vent valve 203 is closed, the temporary storage chamber 200 is in a disconnected state from the atmosphere; when the air vent valve 203 is open, the temporary storage chamber 200 is in a connected state to the atmosphere. With this design, the state switching of the temporary storage chamber 200 can be achieved by controlling the air vent valve 203. If the air vent valve 203 is preferably an electrically controlled valve, electric control of the additive dispensing structure can be achieved, making the control method simpler and more reliable.

[0074] In this embodiment, the state of the additive delivery structure during use is described in detail:

[0075] In the liquid extraction state: the vent valve 203 is closed to keep the temporary storage chamber 200 disconnected from the atmosphere; the first one-way valve 510 is open to prevent liquid from flowing from the suction port to the outlet 220. Figure 9 As shown, the gas extraction unit 300 extracts the gas in the temporary storage chamber 200 to generate a negative pressure, so that the additive in the liquid storage chamber 100 is quantitatively supplied to the temporary storage chamber 200 under the action of pressure difference.

[0076] During infusion: Vent valve 203 is opened to allow the temporary storage chamber 200 to be in a state of communication with the atmosphere, such as... Figure 10 As shown, the suction device 300 is activated so that the airflow passes through the negative pressure pipe 400 and generates negative pressure at the suction port, thereby opening the first one-way valve 510 so that the liquid in the infusion line 500 flows from the outlet 220 to the suction port (i.e., the infusion line 500 is in a connected state), thereby drawing the additive in the temporary storage chamber 200 into the negative pressure pipe 400 and spraying it into the clothing treatment drum 001.

[0077] The other structures in Embodiment 4 are the same as those in Embodiment 2, and will not be described in detail here.

[0078] Example 5

[0079] This utility model also provides a clothing processing device, including a body, at least one clothing processing cylinder, and the additive dispensing structure described in Embodiments 1 to 4. The liquid storage chamber, temporary storage chamber, air extraction component, and negative pressure pipe are arranged sequentially on the body from low to high. When there is only one clothing processing cylinder, the configuration can be referred to Embodiments 1 to 4.

[0080] When multiple garment handling drums are installed, if using Figure 1 and Figure 7 The additive dispensing structure, excluding the liquid storage chamber and the temporary storage chamber, is defined as a dispensing unit. Multiple dispensing units are connected to the same temporary storage chamber, which in turn connects to multiple liquid storage chambers for use by multiple garment processing drums. Alternatively, there can be only one dispensing unit, combined with a switching structure corresponding to multiple garment processing drums. If using... Figure 4 and Figure 9 The additive dispensing structure is defined as a dispensing unit, which is the remaining part of the additive dispensing structure excluding the liquid storage chamber and the temporary storage chamber. Multiple dispensing units are connected to the same temporary storage chamber, and the negative pressure tubes of multiple dispensing units are connected to multiple clothing processing cylinders one by one.

[0081] In addition to the preferred embodiments described above, there are other embodiments of this utility model. Those skilled in the art can make various changes and modifications based on this utility model. As long as they do not depart from the spirit of this utility model, they should all fall within the scope defined in the claims of this utility model.

Claims

1. An additive dispensing structure for dispensing an additive to a laundry treatment drum of a laundry treatment apparatus, characterized in that, The additive dispensing structure includes a liquid storage chamber, a temporary storage chamber, an air extraction device, and a negative pressure pipe with a suction port. The temporary storage chamber connects the liquid storage chamber to the air inlet of the air extraction device, the air outlet of the air extraction device is connected to the negative pressure pipe, and the suction port is connected to the liquid outlet of the temporary storage chamber via a switchable infusion pipeline. The temporary storage chamber has an disconnected state (disconnected from the atmosphere) and an infused state (connected to the atmosphere). The additive dispensing structure has both a liquid extraction state and an infusion state. Under the liquid extraction state: the temporary storage chamber is in a disconnected state from the atmosphere and the infusion pipeline is disconnected. The air extraction device is used to extract the gas in the temporary storage chamber to generate negative pressure, so that the additive in the liquid storage chamber is quantitatively supplied to the temporary storage chamber under the action of pressure difference. In the infusion state: the temporary storage chamber is in a connected state with the atmosphere and the infusion pipeline is connected. The air extraction device is used to make the air flow through the negative pressure tube to generate negative pressure at the suction port, so that the additive in the temporary storage chamber is drawn into the negative pressure tube and then sprayed into the clothing treatment drum.

2. An additive delivery structure according to claim 1, wherein The additive dispensing structure also includes a water storage chamber with an air inlet. The water storage chamber is connected to a switchable water inlet pipe and a switchable water outlet pipe. The water storage chamber is connected to a temporary storage chamber through the water outlet pipe.

3. An additive delivery structure according to claim 2, wherein The additive dispensing structure also has a water inlet state, in which the water outlet pipe is in a connected state. Water in the water storage chamber enters the temporary storage chamber under the action of gravity; or the air extraction device is used to extract the gas in the temporary storage chamber to generate negative pressure so that water in the water storage chamber flows into the temporary storage chamber.

4. An additive delivery structure according to claim 1, wherein The temporary storage chamber is connected to an air inlet pipe that communicates with the atmosphere and an air vent valve for controlling the opening and closing of the air inlet pipe. When the air vent valve is closed, the temporary storage chamber is in a disconnected state from the atmosphere. When the air vent valve is open, the temporary storage chamber is in a connected state with the atmosphere.

5. An additive delivery structure according to claim 1, wherein The liquid storage chamber is set lower than the temporary storage chamber. The liquid storage chamber is connected to the top of the temporary storage chamber through an independent first pipeline. The liquid outlet is located at the bottom of the temporary storage chamber. The infusion pipeline is equipped with a first one-way valve, which only allows the fluid in the infusion pipeline to flow from the liquid outlet to the suction port.

6. The additive delivery structure as described in claim 5, characterized in that, The temporary storage chamber is equipped with a filter screen, which divides the interior of the temporary storage chamber into a first temporary storage chamber and a second temporary storage chamber. The wall of the first temporary storage chamber is provided with an inlet that communicates with the liquid storage chamber, and the wall of the second temporary storage chamber is provided with an outlet.

7. An additive delivery structure according to claim 1, wherein The additive delivery structure also includes a main pipeline, a first branch pipeline, and a second branch pipeline. One end of the main pipeline is connected to a temporary storage chamber, and the other end is connected to one end of the first branch pipeline and one end of the second branch pipeline via a control valve. The other ends of the first branch pipeline and the second branch pipeline are respectively connected to a liquid storage chamber and a suction port. The control valve is used to control the on / off state of the main pipeline and the two branch pipelines. The main pipeline and the second branch pipeline are connected to form the infusion pipeline.

8. The additive dispensing structure as described in claim 1, characterized in that, An overflow port is provided on the side wall of the temporary storage chamber. The overflow port is set higher than the liquid outlet. The overflow port is connected to an overflow pipe. A second one-way valve is provided on the overflow pipe. The second one-way valve only allows liquid to flow outward.

9. An additive delivery structure according to claim 1, wherein The extraction component is an air pump or a fan.

10. Laundry treating apparatus, characterized by, The laundry treating machine comprises a machine body, at least one laundry treating drum and the additive feeding structure according to any one of claims 1 to 9, wherein the liquid storage cavity, the temporary storage cavity, the air suction member and the negative pressure pipe are sequentially arranged from low to high on the machine body.

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