Premixing device and clothes processing equipment
By automatically drawing in detergent and forming a vortex through the Venturi tube and vortex generating structure in the premixing device, the problem of low detergent solubility in washing machines is solved, cleaning efficiency is improved and energy consumption is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TCL HOME APPLIANCES (HEFEI) CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-12
AI Technical Summary
In existing washing machines, when detergent is directly added to the detergent dispenser and dissolved by water flow before entering the washing drum, the dissolution rate is low, resulting in detergent deposits at the bottom of the washing drum that are difficult to clean.
The device employs a premixing mechanism, utilizing a venturi tube and vortex generator to automatically draw in detergent and mix it with water through a negative pressure port, forming a vortex to improve the solubility. It also includes an impeller and baffle structure to enhance the stirring effect, achieving automatic addition and efficient dissolution of detergent.
提高了洗涤剂的溶解率，增强了清洁效率，降低了设备能耗和维护难度，适用于多种应用场景的衣物处理设备。
Smart Images
Figure CN224227475U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of washing machine technology, and particularly relates to a premixing device and clothing processing equipment. Background Technology
[0002] In current washing machines, detergent is typically added to a detergent dispenser, and then water is added to the dispenser. The water flow dissolves the detergent and allows it to enter the washing drum.
[0003] This method of dispensing results in a low detergent dissolution rate, leading to detergent residue that is difficult to clean from the bottom of the washing drum due to insufficient dissolution. Utility Model Content
[0004] This application provides a premixing device and a clothing treatment equipment to solve the problem that the detergent dissolution rate is low when detergent is directly added to the detergent dispenser of existing washing machines and dissolved by rinsing the detergent dispenser with water before entering the washing drum.
[0005] This application provides a premixing device applied to a garment processing equipment. The garment processing equipment includes a water inlet valve, a detergent dispenser, and a washing drum. The detergent dispenser is used to hold detergent. The premixing device includes:
[0006] The venturi tube includes an inlet, a negative pressure port, and an outlet, wherein the negative pressure port is connected to the detergent dispenser, and the inlet is connected to the inlet valve.
[0007] A vortex generating structure includes a housing, within which a flow cavity is formed, the flow cavity connecting the water outlet and the washing drum, and at least a portion of the flow cavity is curved to generate a vortex in the flowing solution.
[0008] Optionally, the system also includes an impeller, which is rotatably disposed within the flow cavity, and the flow solution drives the impeller to rotate as it flows through the impeller.
[0009] Optionally, a baffle is provided in the flow cavity. The baffle includes a connecting end and a free end. The connecting end is connected to the housing, and the free end extends into the flow cavity.
[0010] Optionally, the baffles include a plurality of baffles, which are spaced apart within the flow cavity.
[0011] Optionally, the venturi tube comprises:
[0012] The contraction section has the water inlet at one end, and the inner radial direction of the contraction section gradually decreases away from the water inlet.
[0013] The expansion section has an outlet at one end, and the inner radial direction of the expansion section gradually increases towards the outlet.
[0014] The throat is connected between the contraction section and the expansion section. The throat is provided with the negative pressure port. When the water inlet valve introduces water into the water inlet, the negative pressure port forms a negative pressure to draw out the detergent in the detergent box.
[0015] Optionally, the angle between the extension direction of the constriction section's wall and the horizontal plane is between 15° and 25°.
[0016] Optionally, the angle between the extension direction of the expansion section's wall and the horizontal plane is between 6° and 10°.
[0017] Optionally, the housing is disc-shaped and has connecting ports at opposite ends, one of which is connected to the water outlet and the other is connected to the washing drum.
[0018] Optionally, the vortex generating structure includes multiple structures, which are sequentially connected and disposed between the water outlet and the washing drum.
[0019] This application also provides a clothing processing device, including a water inlet valve, a detergent box, and a washing drum. The detergent box is used to hold detergent, and the device also includes a premixing device as described above.
[0020] The premixing device provided in this application embodiment automatically adds detergent by introducing water into a venturi tube to create a negative pressure at the negative pressure port, thus automatically drawing detergent from the detergent box without the need for an additional power source. After entering the venturi tube, the detergent mixes with water to form a washing solution, which then enters the flow chamber of the vortex generating structure. By setting at least a portion of the flow chamber in a curved shape, the centrifugal force of the flow solution causes the pressure on the outside to be higher than that on the inside, thereby forming a secondary flow or a spiral vortex, which further enhances the premixing effect of the washing solution, increases the solubility of the detergent, and improves cleaning efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.
[0023] Figure 1This is a schematic diagram of a premixing device provided in an embodiment of this application.
[0024] Figure 2 This is another structural schematic diagram of the premixing device provided in the embodiments of this application.
[0025] Figure 3 This is a schematic diagram of the structure of the garment processing equipment provided in the embodiments of this application.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Venturi tube; 11. Contraction section; 111. Inlet; 12. Throat; 121. Negative pressure port; 13. Expansion section; 131. Outlet;
[0028] 2. Vortex generating structure; 21. Shell; 211. Flow cavity; 22. Impeller; 23. Baffle. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0030] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0031] In the description of this application, it should be noted that, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0034] This application provides a premixing device and a clothing treatment equipment to solve the problem that the detergent dissolution rate is low when detergent is directly added to the detergent dispenser of an existing washing machine and dissolved by rinsing the detergent dispenser with water before entering the washing drum. The following description is in conjunction with the accompanying drawings.
[0035] The premixing device provided in this application embodiment is applied to a garment processing device. The garment processing device includes a water inlet valve, a detergent dispenser, and a washing drum. The detergent dispenser is used to hold detergent. Please refer to [link to relevant documentation]. Figure 1The premixing device includes a Venturi tube 1 and a vortex generating structure 2. The Venturi tube 1 includes an inlet 111, a negative pressure port 121, and an outlet 131. The negative pressure port 121 is connected to the detergent dispenser, and the inlet 111 is connected to the inlet valve. The vortex generating structure 2 includes a housing 21, and a flow cavity 211 is formed inside the housing 21. The flow cavity 211 is connected to the outlet 131 and the washing drum. At least part of the flow cavity 211 is curved to form a vortex in the flow solution.
[0036] The premixing device provided in this application embodiment automatically adds detergent by introducing water into the Venturi tube 1 to create a negative pressure at the negative pressure port 121, thus automatically drawing detergent from the detergent box without the need for an additional power source. After entering the Venturi tube 1, the detergent mixes with water to form a washing solution, which then enters the flow chamber 211 of the vortex generating structure 2. By setting at least a portion of the flow chamber 211 in a curved shape, the centrifugal force of the flow solution makes the pressure on the outside higher than that on the inside, thereby forming a secondary flow or a spiral vortex, which further enhances the premixing effect of the washing solution, increases the solubility of the detergent, and improves the cleaning efficiency.
[0037] Optionally, the premixing device provided in this embodiment further includes an impeller 22, which is rotatably disposed within the flow chamber 211. The flow of the solution through the impeller 22 causes it to rotate. Since the washing solution exits the outlet 131 of the venturi tube 1 at a relatively high speed, the impact force on the impeller 22 is significant, causing it to rotate. The rotating impeller 22 further agitates the flow of the washing solution, increasing the angular momentum of the solution and thus further improving the premixing effect and detergent solubility. The connection structure of the impeller 22 is not further limited here; the impeller 22 can be detachably disposed within the vortex generating structure 2.
[0038] By setting impeller 22, the premixing efficiency is improved by making reasonable use of energy conversion. There is no need to introduce other power sources, which reduces the energy consumption and operating cost of the equipment, as well as the complexity and maintenance difficulty of the equipment.
[0039] Optionally, please refer to Figure 2 A baffle 23 is provided inside the flow cavity 211. The baffle 23 includes a connecting end and a free end. The connecting end is connected to the shell 21, and the free end extends into the flow cavity 211. By adding the baffle 23 to the flow path of the flowing solution, laminar flow is disrupted, generating eddies and turbulence such as the Karman vortex street, increasing the gas-liquid contact area and contact time. At the same time, the pressure in the vortex zone formed behind the baffle 23 decreases, causing dissolved gases to precipitate (such as CO) or external gases to be drawn in (Venturi effect), promoting bubble nucleation. Furthermore, strong shearing forces are generated at the edge of the baffle 23 or in narrow flow channels, cutting large bubbles into uniform small bubbles.
[0040] Furthermore, the baffle 23 can be spiral-shaped. The spiral baffle 23 causes the overflow solution to be repeatedly divided and rotated, breaking large bubbles into small bubbles and improving the dissolution efficiency of the overflow solution.
[0041] Optionally, the baffle 23 can be a porous structure to improve the foaming rate of the overflow solution.
[0042] Optionally, the baffle 23 can be a serrated structure to improve the foaming rate of the overflow solution.
[0043] Optionally, the baffle 23 can be tilted to increase longitudinal mixing, thereby improving the foaming rate of the overflow solution.
[0044] Optionally, the outer wall of the baffle 23 may have a rough surface to promote bubble nucleation, and preferably, it may have an air-loving coating such as PTFE.
[0045] Optionally, multiple baffles 23 are provided, spaced apart within the flow cavity 211. By increasing the number of baffles 23, the mixing path is extended, thus balancing the foaming effect and pressure loss.
[0046] Optionally, the venturi tube 1 includes a constriction section 11, an expansion section 13, and a throat 12. One end of the constriction section 11 has an inlet 111, and the inner radial direction of the constriction section 11 gradually decreases away from the inlet 111. One end of the expansion section 13 has an outlet 131, and the inner radial direction of the expansion section 13 gradually increases towards the outlet 131. The throat 12 connects the constriction section 11 and the expansion section 13, and the throat 12 has a negative pressure port 121. When the inlet valve supplies water to the inlet 111, the negative pressure port 121 creates a negative pressure to draw detergent from the detergent dispenser.
[0047] As the flow solution passes through the contraction section 11, the cross-sectional area gradually decreases, the fluid accelerates, and the pressure decreases. When the flow solution passes through the throat 12, the flow velocity is at its maximum and the pressure is at its minimum. As the flow solution passes through the expansion section 13, the cross-sectional area gradually recovers, the fluid decelerates, and the pressure partially rises, preventing excessive energy loss. Specifically, when the flow channel cross-section suddenly expands or contracts, the change in the flow velocity of the flow solution leads to abrupt changes in the pressure gradient, inducing flow separation and vortices, thereby improving premixing efficiency.
[0048] Optionally, the angle between the extending direction of the constriction section 11 and the horizontal plane is between 15° and 25°. In some examples, the angle between the extending direction of the constriction section 11 and the horizontal plane can be 15°; in other examples, the angle between the extending direction of the constriction section 11 and the horizontal plane can be 20°; in still other examples, the angle between the extending direction of the constriction section 11 and the horizontal plane can be 25°, and so on.
[0049] Optionally, the angle between the extension direction of the expansion section 13 and the horizontal plane is between 6° and 10°. In some examples, the angle between the extension direction of the expansion section 13 and the horizontal plane can be 6°; in other examples, the angle between the extension direction of the expansion section 13 and the horizontal plane can be 8°; and in still other examples, the angle between the extension direction of the expansion section 13 and the horizontal plane can be 10°.
[0050] Optionally, the shell 21 is disc-shaped and has connecting ports at opposite ends. One connecting port connects to the water outlet 131, and the other connecting port connects to the washing drum. That is, the periphery of the shell 21 is curved, utilizing the centrifugal force of the flowing solution to make the pressure on the outside higher than on the inside, forming secondary flow or a spiral vortex. This further improves premixing efficiency.
[0051] Furthermore, the connection port between the shell 21 and the outlet 131 of the venturi tube 1 can be located above the impeller 22 to reduce the flow loss of the overflow solution from the outlet 131 to the impeller 22, thereby improving the rotation speed and stirring effect of the impeller 22.
[0052] Optionally, the vortex generating structure 2 includes multiple structures, which are sequentially connected and disposed between the outlet 131 and the washing drum. By increasing the number of vortex generating structures 2 and extending the premixing length, the mixing efficiency of the washing solution before entering the washing drum is further improved.
[0053] This application also provides a garment processing device. Please refer to [link / reference]. Figure 3 The system includes an inlet valve, a detergent dispenser, and a washing drum. The detergent dispenser holds the detergent. It also includes a premixing device as described above. The premixing device includes a Venturi tube 1 and a vortex generating structure 2. The Venturi tube 1 includes an inlet 111, a negative pressure port 121, and an outlet 131. The negative pressure port 121 is connected to the detergent dispenser, and the inlet 111 is connected to the inlet valve. The vortex generating structure 2 includes a housing 21, within which a flow cavity 211 is formed. The flow cavity 211 connects to the outlet 131 and the washing drum. At least a portion of the flow cavity 211 is curved to create a vortex in the flowing solution.
[0054] Optionally, the garment processing equipment also includes a controller for controlling the water inlet valve to intermittently introduce water, thereby intermittently extracting detergent and further enhancing the premixing effect.
[0055] The garment processing equipment provided in this application embodiment features a modular design for the premixing device, making it easy to disassemble and maintain. This modular design also allows the device to be easily integrated into existing equipment, making it suitable for a variety of different application scenarios.
[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0057] The premixing device and clothing processing equipment provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A premixing device applied to a garment processing equipment, the garment processing equipment comprising a water inlet valve, a detergent dispenser, and a washing drum, the detergent dispenser being used to hold detergent, characterized in that, The premixing device includes: The venturi tube includes an inlet, a negative pressure port, and an outlet, wherein the negative pressure port is connected to the detergent dispenser, and the inlet is connected to the inlet valve. A vortex generating structure includes a housing, within which a flow cavity is formed, the flow cavity connecting the water outlet and the washing drum, and at least a portion of the flow cavity is curved to generate a vortex in the flowing solution.
2. The premixing device according to claim 1, characterized in that, It also includes an impeller, which is rotatably disposed in the flow cavity, and the flow solution drives the impeller to rotate when it flows through the impeller.
3. The premixing device according to claim 1, characterized in that, The flow cavity is provided with a baffle plate, which includes a connecting end and a free end. The connecting end is connected to the housing, and the free end extends into the flow cavity.
4. The premixing device according to claim 3, characterized in that, The baffles include multiple baffles, which are spaced apart within the flow cavity.
5. The premixing device according to claim 1, characterized in that, The Venturi tube includes: The contraction section has the water inlet at one end, and the inner radial direction of the contraction section gradually decreases away from the water inlet. The expansion section has an outlet at one end, and the inner radial direction of the expansion section gradually increases towards the outlet. The throat is connected between the contraction section and the expansion section. The throat is provided with the negative pressure port. When the water inlet valve introduces water into the water inlet, the negative pressure port forms a negative pressure to draw out the detergent in the detergent box.
6. The premixing device according to claim 5, characterized in that, The angle between the extension direction of the constricted section's pipe wall and the horizontal plane is between 15° and 25°.
7. The premixing device according to claim 5, characterized in that, The angle between the extension direction of the expansion section and the horizontal plane is between 6° and 10°.
8. The premixing device according to claim 1, characterized in that, The housing is disc-shaped and has connecting ports at opposite ends. One connecting port is connected to the water outlet, and the other connecting port is connected to the washing drum.
9. The premixing device according to claim 1, characterized in that, The vortex generating structure includes multiple structures, which are sequentially connected and disposed between the water outlet and the washing drum.
10. A garment processing device, comprising a water inlet valve, a detergent dispenser, and a washing drum, wherein the detergent dispenser is used to hold detergent, characterized in that, It also includes a premixing device as described in any one of claims 1-9.