Feeding system and washing machine
By setting up isolated exhaust passages and bubble chambers in the washing machine's dispensing system, the problems of increased pressure inside the washing tub and impaired ventilation performance are solved, achieving efficient dispensing and venting of washing fluid.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANASONIC APPLIANCES (CHINA) CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-08
AI Technical Summary
The existing washing machine dispensing system causes the pressure inside the washing tub to increase when dispensing the washing fluid, and the entry of external water into the exhaust pipe affects the ventilation performance.
A dispensing system was designed, including an inlet valve assembly, an additive dispensing passage, an outlet tank, and an exhaust passage. The exhaust passage is isolated from the additive dispensing passage. The bubble chamber and partition ribs in the exhaust passage prevent water from entering the exhaust pipe, and air and foam are discharged through the outlet tank.
This effectively prevents foam buildup when the pressure inside the washing tub increases, ensuring the tub's ventilation performance and improving exhaust efficiency and the efficiency of dispensing washing fluid.
Smart Images
Figure CN224212993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of washing machine technology, specifically to a dispensing system and a washing machine having the dispensing system. Background Technology
[0002] Washing machines are equipped with a dispensing system for dispensing washing fluid into the washing tub. This system can dispense washing fluid mixed with additives (laundry detergent, fabric softener, etc.) into the washing tub. However, when dispensing washing fluid, a large amount of detergent foam is often generated in the additive dispensing passage and inside the washing tub, which leads to an increase in pressure inside the washing tub.
[0003] To address the issue of increased pressure inside the washing tub, existing technologies use an exhaust pipe connected to the additive dispensing channel in the dispensing system to expel air from the tub. However, when external water enters the dispensing system through the inlet valve assembly, water can enter the exhaust pipe through the additive dispensing channel, affecting the air expulsion effect from the washing tub. Utility Model Content
[0004] This application aims to provide a dispensing system for dispensing washing fluid into the washing tub of a washing machine, and a washing machine having the dispensing system, so as to at least solve or alleviate some of the problems existing in the prior art.
[0005] This application provides a system for dispensing washing fluid into the washing tub of a washing machine, comprising: a water inlet valve assembly connected to an external water source; an additive dispensing passage connected at one end to the water inlet valve assembly; a water outlet tank corresponding to and connected to the additive dispensing passage, having a water outlet at its bottom for supplying washing fluid into the washing tub through the water outlet; an exhaust passage corresponding to the water outlet tank and isolated from the additive dispensing passage, having an exhaust port at one end connected to the water outlet tank; and an exhaust pipe connected at one end to the exhaust passage via a vent and at the other end connected to an exhaust pipe inside the washing tub.
[0006] According to this technical solution, when the washing fluid is added to the washing tub through the additive dispensing passage and the water outlet tank, the pressure inside the washing tub increases. Under high pressure, the air inside the tub enters the exhaust passage through the exhaust pipe and is discharged into the water outlet tank through the exhaust port located in the exhaust passage. By setting up an exhaust passage isolated from the additive dispensing passage, the problem in the prior art where external water enters the dispensing system and enters the exhaust pipe through the additive dispensing passage, thus affecting the ventilation performance of the washing tub, is avoided.
[0007] In the optional technical solution, the exhaust passage includes a first exhaust passage and a second exhaust passage that are interconnected. The first exhaust passage and the second exhaust passage are intersected at a certain angle to form a bubble cavity.
[0008] According to the technical solution, the first exhaust passage and the second exhaust passage are intersected at a certain angle to form a foam chamber. When the pressure inside the washing tub increases, causing the air inside the tub and some detergent foam to enter the exhaust passage through the exhaust pipe, the detergent foam is temporarily contained in the foam chamber and further enters the water outlet tank through the foam chamber. This avoids the problem of excessive detergent foam accumulating in the exhaust pipe and affecting the ventilation performance of the washing tub.
[0009] In the optional technical solution, the exhaust port includes a first exhaust port and a second exhaust port, wherein the opening of the first exhaust port is located at the end of the first exhaust passage away from the vent; and the opening of the second exhaust port is located at the end of the second exhaust passage away from the vent.
[0010] According to the technical solution, both the first and second exhaust ports are located far from the vent, which avoids the problem that the fast-flowing detergent fluid rushing up through the exhaust pipe under the high pressure inside the washing tub forms a local vortex at the vent, or that some detergent foam enters the exhaust passage through the exhaust pipe and accumulates near the vent, blocking the first or second exhaust port, thus affecting the ventilation performance of the washing tub.
[0011] In the optional technical solution, a partition rib is provided between the additive delivery passage and the exhaust passage.
[0012] According to this technical solution, the additive delivery passage and the exhaust passage are further separated by the partition ribs, which prevents the fluid in the additive delivery passage from entering the exhaust pipe through the exhaust passage and forming a water seal, thereby ensuring the ventilation performance of the washing tub.
[0013] In an optional technical solution, the vent is located at the top of the exhaust passage.
[0014] According to this technical solution, detergent foam in the foam chamber is prevented from flowing back through the vent and accumulating in the exhaust pipe, thus avoiding any impact on the exhaust performance of the washing tub.
[0015] In the optional technical solution, the outlet tank is connected to the outside atmosphere.
[0016] According to the technical solution, the air that enters the water outlet tank through the first exhaust port and the second exhaust port is discharged into the outside atmosphere through the water outlet tank.
[0017] In the optional technical solution, the additive delivery passage and the exhaust passage are located in a first plane, and the first plane is located above the water outlet tank in the direction of gravity.
[0018] According to this technical solution, the mixture of water and additives in the additive dosing channel, along with a portion of the washing fluid and detergent foam that rises under high pressure inside the washing tub and enters the exhaust channel through the exhaust pipe, naturally flow into the outlet tank under gravity and are then released into the washing tub through the outlet at the bottom of the outlet tank. Air entering the exhaust channel through the exhaust pipe flows into the outlet tank via the first and second exhaust ports and is then discharged into the outside atmosphere through the outlet tank. This optimizes the layout of the additive dosing channel, exhaust channel, and outlet tank, reducing the space occupied by the dosing system while improving exhaust efficiency and the dosing efficiency of the washing fluid.
[0019] Another aspect of this application provides a washing machine, including a washing tub and the dispensing system provided in any of the above-described technical solutions. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the delivery system provided in the embodiments of this application.
[0021] Figure 2 for Figure 1 A cross-sectional diagram of the delivery system from the AA perspective provided in the document.
[0022] Figure 3 for Figure 1 A magnified schematic diagram of the delivery system provided in the document.
[0023] Reference numerals: Dosing system 100, water inlet valve assembly 101, additive dosing passage 102, water outlet 103, water outlet 1031, exhaust passage 104, first exhaust passage 1041, second exhaust passage 1042, exhaust port 105, first exhaust port 1051, second exhaust port 1052, exhaust pipe 106, vent 1061, partition rib 107, top cover 108. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Figure 1 This is a schematic diagram of the delivery system 100 provided in the embodiments of this application. Figure 2 for Figure 1 A cross-sectional diagram of the delivery system 100 from an AA perspective provided in the document. Figure 3 for Figure 1The diagram provided shows a partial enlarged view of the delivery system 100, where the internal structure of the delivery system 100 is shown for clarity. Figure 1 and Figure 3 The top cover 108 of the delivery system 100 is hidden inside, and the related structure of the top cover 108 is in Figure 2 As shown in the figure, please refer to the comprehensive reference. Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application provides a dispensing system 100 for dispensing washing fluid into the washing tub (not shown) of a washing machine, including: a water inlet valve assembly 101, an additive dispensing passage 102, a water outlet 103, an exhaust passage 104, and an exhaust pipe 106.
[0026] The water inlet valve assembly 101 is connected to an external water source. One end of the additive dispensing passage 102 is connected to the water inlet valve assembly 101. The water outlet tank 103 is configured to correspond to and communicate with the additive dispensing passage 102. A water outlet 1031 is provided at the bottom of the water outlet tank 103, through which washing fluid is supplied to the washing tub. The exhaust passage 104 is configured to correspond to the water outlet tank 103 in a manner isolated from the additive dispensing passage 102. One end of the exhaust passage 104 is provided with an exhaust port 105, which communicates with the water outlet tank 103. A vent 1061 is also provided in the exhaust passage 104. One end of the exhaust pipe 106 is connected to the exhaust passage 104 via the vent 1061, and the other end is connected to the washing tub.
[0027] The dispensing system 100 provided in the above embodiments of this application, during the operation of the washing machine, when it is necessary to dispense washing fluid into the washing tub, external water enters the additive dispensing passage 102, which is connected to the water inlet valve assembly 101, through the additive dispensing passage 102. Water mixes with additives in the additive dispensing passage 102, and the mixture of additives and water flows through the additive dispensing passage 102 to the water outlet tank 103 for further mixing to become washing fluid. The washing fluid is then dispensed into the washing tub through the water outlet 1031 located at the bottom of the water outlet tank 103. At this time, a large amount of washing fluid is dispensed into the washing tub, causing the pressure inside the washing tub to continuously increase. Under high pressure, the air inside the washing tub surges upward through the exhaust pipe 106 to the exhaust passage 104, which is isolated from the additive dispensing passage 102, and flows into the water outlet tank 103 through the exhaust port 105 opened on the exhaust passage 104.
[0028] Through the above implementation method, the exhaust pipe 106 is connected to the exhaust passage 104 which is isolated from the additive dispensing passage 102. When an external water source enters the dispensing system 100, it only flows into the water outlet tank 103 after mixing with the additive through the additive dispensing passage 102, and cannot flow into the exhaust pipe 106. This avoids the problem that when the washing fluid is dispensed into the washing tub through the dispensing system 100, water simultaneously enters and fills the exhaust pipe 106, causing the air in the washing tub to be unable to be discharged through the exhaust pipe 106, thus ensuring the ventilation performance of the washing tub.
[0029] Continue to refer to Figure 1 As shown, in an optional embodiment of this application, the exhaust passage 104 includes a first exhaust passage 1041 and a second exhaust passage 1042 that are interconnected, wherein the first exhaust passage 1041 and the second exhaust passage 1042 are arranged to intersect at a certain angle to form a bubble cavity.
[0030] Specifically, when a large amount of detergent foam is generated in the washing tub, there is a possibility that the detergent foam may enter the exhaust pipe 106 under high pressure. When too much detergent foam accumulates in the exhaust passage 104 and the exhaust pipe 106, it may affect the airflow in the exhaust pipe 106 or block the exhaust port 105.
[0031] By setting up a first exhaust passage 1041 and a second exhaust passage 1042 that are interconnected and intersect at a certain angle, the first exhaust passage 1041 and the second exhaust passage 1042 together form a foam chamber that can accommodate a certain amount of detergent foam. Part of the detergent foam in the cavity is blown away by the air discharged into the exhaust passage 104 through the vent 1061, and the other part flows into the water outlet 103 through the exhaust port 105. In the water outlet 103, it is rinsed and diluted by a large amount of washing fluid flowing into the water outlet 103 through the additive dosing passage 102 and defoamed, thereby preventing detergent foam from accumulating in the exhaust pipe 106 or blocking the exhaust port 105, and further ensuring the ventilation performance inside the washing tub.
[0032] Furthermore, by intersecting the first exhaust passage 1041 and the second exhaust passage 1042, when the air and some of the washing fluid or detergent foam in the washing tub flow into the exhaust passage 104 through the exhaust pipe 106, part of it continues to flow along the first exhaust passage 1041, and the other part continues to flow along the second exhaust passage 1042, which is set at a certain angle to the first exhaust passage 1041. They then flow into the water tank 103 through the exhaust ports 105 (hereinafter referred to as the first exhaust port 1051 and the second exhaust port 1052), thereby diverting the air or detergent foam flowing into the exhaust passage 104. This prevents the high-speed fluid from forming local eddies near the vent 1061 or the exhaust port 105, or prevents detergent foam from accumulating at the vent 1061, thus avoiding obstruction of air discharge and affecting the ventilation efficiency of the washing tub.
[0033] In an optional embodiment of this application, the exhaust port 105 includes a first exhaust port 1051 and a second exhaust port 1052, wherein the first exhaust port 1051 is opened at one end of the first exhaust passage 1041 away from the vent 1061, and the second exhaust port 1052 is opened at one end of the second exhaust passage 1042 away from the vent 1061.
[0034] Specifically, based on setting a first exhaust passage 1041 and a second exhaust passage 1042 that intersect at a certain angle, a first exhaust port 1051 and a second exhaust port 1052 are respectively provided at the end of the first exhaust passage 1041 and the second exhaust passage 1042 away from the vent 1061.
[0035] When the air and some of the washing fluid or detergent foam in the washing tub flow through the exhaust pipe 106 into the exhaust passage 104, a portion continues to flow along the first exhaust passage 1041. When it flows to the first exhaust port 1051 located at the other end of the first exhaust passage 1041, it is discharged into the water outlet tank 103 through the first exhaust port 1051. The other portion continues to flow along the second exhaust passage 1042, which is at a certain angle to the first exhaust passage 1041. When it flows to the second exhaust port 1052 located at the other end of the second exhaust passage 1042, it is discharged into the water outlet tank 103 through the second exhaust port 1052.
[0036] By setting a first exhaust port 1051 and a second exhaust port 1052 at the ends of the first exhaust passage 1041 and the second exhaust passage 1042 away from the vent 1061, the bubble cavity formed between the first exhaust port 1051 and the second exhaust port 1052 is made as large as possible, thereby accommodating more detergent foam and reducing the possibility of detergent foam accumulating in the exhaust pipe 106 and affecting exhaust. At the same time, by setting two exhaust ports, the air entering the exhaust passage 104 through the exhaust pipe 106 is split and discharged into the water outlet tank 103 through the first exhaust port 1051 and the second exhaust port 1052 respectively, thus improving exhaust efficiency.
[0037] Furthermore, the second vent 1052 is positioned further away from the bottom of the water outlet 1031 than the first vent 1051.
[0038] When the washing fluid flows into the water outlet 103 through the additive dispensing passage 102, it will be quickly discharged into the washing tub through the water outlet 1031 at the bottom of the water outlet 103. At this time, the high-speed water flow near the water outlet 1031 may form a local eddy, or the air discharged from the first exhaust port 1051 may be drawn into the water to form gas and accumulate near the first exhaust port 1051, thereby affecting the exhaust effect of the first exhaust port 1051.
[0039] By positioning the second vent 1052 further away from the outlet 1031 at the bottom of the water outlet 103 than the first vent 1051, the second vent 1052 is protected from the eddy currents formed by the high-speed water flow near the outlet 1031. Even if the venting effect of the first vent 1051 is affected, the air in the venting passage 104 can still be discharged to the water outlet 103 through the second vent 1052, ensuring that the washing tub still has good ventilation performance while the dispensing system 100 dispenses washing water into the washing tub.
[0040] In an optional embodiment of this application, a partition rib 107 is provided between the additive delivery passage 102 and the exhaust passage 104.
[0041] Through the above implementation method, a partition rib 107 is provided in the additive dispensing passage 102 and the exhaust passage 104 to further isolate the additive dispensing passage 102 and the exhaust passage 104. When an external water source enters the additive dispensing passage 102 through the water inlet valve assembly 101, it will be blocked by the partition rib 107 and will not be able to enter the exhaust passage 104 and the exhaust pipe 106. This also avoids the problem of air or detergent foam rising from the exhaust pipe 106 into the exhaust passage 104 and invading the additive dispensing passage 102.
[0042] Figure 2The arrows in the diagram indicate the direction of airflow into the exhaust passage 104 through the exhaust pipe 106 and the vent 1061. (See reference...) Figure 2 As shown, in an optional embodiment of this application, the dispensing system further includes a top cover 108 covering the additive dispensing passage 102 and the exhaust passage 104. An air vent 1061 is provided on the top cover 108 in a manner corresponding to the exhaust passage 106. In the direction of gravity, the air vent 1061 is located at the top of the exhaust passage 104.
[0043] Through the above-described embodiments, air inside the washing tub, under high pressure, flows through the exhaust pipe 106 and into the exhaust passage 104 via the vent 1061 located at the top of the exhaust passage 104. Compared to placing the vent 1061 at the bottom or side of the exhaust passage 104, this reduces the possibility of detergent foam contained in the foam chamber blocking the vent 1061. Simultaneously, by placing the vent 1061 on the top cover 108 corresponding to the exhaust passage 106, it is possible to prevent detergent foam contained in the foam chamber from flowing back and accumulating in the exhaust pipe 106, further ensuring the ventilation performance of the washing tub.
[0044] It should be noted that although the embodiments of this application are described in the form of a vent 1061 being disposed on a top cover 108 corresponding to an exhaust passage 104, this is only an optional embodiment of this application and is not intended to limit this application. The form of vent 1061 being disposed on a bottom shell corresponding to an exhaust passage 104 or a side shell corresponding to an exhaust passage 104 should both be included within the protection scope of this application.
[0045] In an optional embodiment of this application, the water outlet tank 103 is connected to the outside atmosphere.
[0046] Under high pressure, the air inside the washing tub enters the exhaust passage 104 through the exhaust pipe 106, and is discharged into the water outlet 103 through the exhaust port 105 in the exhaust passage 104. By connecting the water outlet 103 with the outside atmosphere, the air entering the water outlet 103 is directly discharged into the outside atmosphere, thereby ensuring the overall ventilation performance of the washing machine and improving ventilation efficiency.
[0047] In an optional embodiment of this application, the additive delivery passage 102 and the exhaust passage 104 are located in a first plane, which is located above the water outlet tank 103 in the direction of gravity.
[0048] According to this technical solution, the mixture of water and additives in the additive dosing passage 102, along with a portion of the washing fluid and detergent foam that rises under high pressure inside the washing tub and enters the exhaust passage 104 through the exhaust pipe 106, naturally flow into the water outlet 103 under gravity, and are then released into the washing tub through the water outlet 1031 at the bottom of the water outlet 103. Air entering the exhaust passage 104 through the exhaust pipe 106 flows into the water outlet 103 through the first exhaust port 1051 and the second exhaust port 1052, and is then discharged into the outside atmosphere through the water outlet 103. This optimizes the layout of the additive dosing passage 102, the exhaust passage 104, and the water outlet 103, reducing the space occupied by the dosing system 100 while improving exhaust efficiency and the dosing efficiency of the washing fluid.
[0049] In another aspect, which was not applied for, a washing machine is also provided, including a washing tub and the dispensing system 100 provided in any of the above-mentioned technical solutions.
[0050] The above are merely optional embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A dispensing system for dispensing washing fluid into the washing tub of a washing machine, characterized in that, include: The inlet valve assembly connects to an external water source; An additive dispensing channel, one end of which is connected to the water inlet valve assembly; The water outlet is configured in a manner corresponding to the additive dispensing passage and is connected to the additive dispensing passage. A water outlet is provided at the bottom of the water outlet to supply washing fluid into the washing tub. An exhaust passage is provided in a manner that is isolated from the additive dosing passage and corresponds to the water outlet tank. One end of the passage is provided with an exhaust port, which is connected to the water outlet tank. The exhaust pipe has one end connected to the exhaust passage via a vent, and the other end connected to the washing tub.
2. The delivery system according to claim 1, characterized in that, The exhaust passage includes a first exhaust passage and a second exhaust passage that are interconnected. The first exhaust passage and the second exhaust passage are intersected at a certain angle to form a bubble cavity.
3. The delivery system according to claim 2, characterized in that, The exhaust port includes a first exhaust port and a second exhaust port. Wherein, the first exhaust port opening is located at the end of the first exhaust passage away from the vent; The second exhaust port opening is located at the end of the second exhaust passage away from the vent.
4. The delivery system according to claim 3, characterized in that, A partition rib is provided between the additive delivery passage and the exhaust passage.
5. The delivery system according to claim 3 or 4, characterized in that, The vent is located at the top of the exhaust passage.
6. The delivery system according to claim 1, characterized in that, The water outlet trough is connected to the outside atmosphere.
7. The delivery system according to claim 1, characterized in that, The additive delivery passage and the exhaust passage are located in a first plane. The first plane is positioned above the water outlet in the direction of gravity.
8. A washing machine, characterized in that, Includes a washing tub and a dispensing system as described in any one of claims 1-7.