Gas-liquid mixing unit for foaming mechanism, foaming mechanism and kitchen and bath equipment

Abstract

The embodiment of the present disclosure discloses a gas-liquid mixing unit on a foaming mechanism, a foaming mechanism and a kitchen and bathroom equipment, which relates to but is not limited to kitchen and bathroom technology. The gas-liquid mixing unit is provided with a liquid inlet flow channel, a gas inlet flow channel, a liquid outlet flow channel and a plurality of mixing flow channels. The liquid inlet flow channel is arranged to supply the foaming liquid to the plurality of mixing flow channels. The gas inlet flow channel is arranged to supply the gas mixed with the foaming liquid to the plurality of mixing flow channels. After the foaming liquid and the gas enter the gas-liquid mixing unit, the foaming liquid and the gas are divided by the plurality of mixing flow channels, so that the foaming liquid and the gas can be mixed in the plurality of mixing flow channels respectively, and the mixed liquid with numerous tiny bubbles is formed under the action of the gas. Compared with the thick foaming liquid, the mixed liquid has a larger volume and is more delicate, has better fluidity, and can quickly form a uniform and delicate foam with other liquids, so that less foaming liquid can achieve better foaming effect.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to, but is not limited to, kitchen and bathroom technology, and in particular to a gas-liquid mixing unit for a foaming mechanism, a foaming mechanism and a kitchen and bathroom device. BACKGROUND

[0002] Currently, the foaming control logic commonly used by kitchen and bathroom devices with foaming function, such as intelligent toilet, intelligent cover plate, soap dispenser faucet and soap dispenser sink, is that the liquid extraction structure extracts the foaming liquid from the liquid storage structure to supply to the mixing structure and mixes with the incoming water structure (e.g. clean water or pure water from the municipal water network) to form foam from the foam outlet structure, as shown in Figure 1 .

[0003] In the above foaming control logic, the mixing of the foaming liquid and other liquid in the mixing structure is prone to liquid stratification due to the difference in performance and fast flow rate of the two liquids, resulting in uneven mixing of the two liquids, and further resulting in the need for more foaming liquid to achieve better foaming effect in subsequent foaming. SUMMARY

[0004] The present disclosure provides a gas-liquid mixing unit for a foaming mechanism, a foaming mechanism and a kitchen and bathroom device, aiming to solve the technical problem that the existing kitchen and bathroom device needs to consume more foaming liquid to achieve better foaming effect.

[0005] The present disclosure provides a gas-liquid mixing unit for a foaming mechanism, which is provided with a liquid inlet flow channel, a flow inlet flow channel, a liquid outlet flow channel and a plurality of mixing flow channels, the liquid inlet flow channel is arranged to supply foaming liquid to the plurality of mixing flow channels, and the liquid outlet flow channel is arranged to flow out the mixed liquid of the foaming liquid and gas to the mixing unit of the foaming mechanism, so that it is mixed with other liquid in the mixing unit to form foam.

[0006] The gas-liquid mixing unit of the above scheme can reduce the consumption of foaming liquid while ensuring better foaming effect. Specifically, the gas-liquid mixing unit is provided with a liquid inlet channel, a gas inlet channel, a liquid outlet channel, and a plurality of mixing channels. The liquid inlet channel is configured to supply foaming liquid to the plurality of mixing channels. The gas inlet channel is configured to supply gas mixed with the foaming liquid to the plurality of mixing channels. The liquid outlet channel is configured to supply the mixed liquid of the foaming liquid and the gas to the mixing unit of the foaming mechanism, so that it is mixed with other liquids in the mixing unit to form foam. In this way, the foaming liquid and the gas enter the gas-liquid mixing unit and are distributed through the plurality of mixing channels, so that the foaming liquid and the gas are mixed in the plurality of mixing channels, and the mixed liquid with numerous tiny bubbles is formed under the action of the gas. Compared with viscous foaming liquid, the mixed liquid has larger volume and is more delicate, and has better flowability, so that it can quickly form uniform and delicate foam with other liquids, and less foaming liquid can achieve better foaming effect. Compared with direct foaming in the mixing unit, the foaming effect is poor. By increasing the gas-liquid mixing unit, the foaming liquid is pre-foamed before being mixed with other liquids, so that the foaming effect can be improved.

[0007] In some embodiments of the gas-liquid mixing unit, the mixing channel includes a first liquid inlet end, a gas inlet end located at one end of the mixing channel, and a liquid outlet end located at the other end of the mixing channel.

[0008] The first liquid inlet end is located between the gas inlet end and the liquid outlet end and communicates with the liquid inlet channel.

[0009] In some embodiments of the gas-liquid mixing unit, the flow area of the mixing channel gradually narrows from the gas inlet end to the liquid outlet end.

[0010] In some embodiments of the gas-liquid mixing unit, the gas-liquid mixing unit includes a plurality of first ribs, and one mixing channel is arranged between adjacent first ribs. The first ribs have a stop end defining the gas inlet end.

[0011] The gas inlet channel includes a plurality of distribution channels, and the distribution channels include a gas outlet end. The gas outlet end communicates with the gas inlet end. A plurality of stop ends correspond to a plurality of gas outlet ends one by one and are arranged on the gas flow path defined by the corresponding gas outlet end to form a first flow distribution channel between the stop end and the gas outlet end. The first flow distribution channel communicates with the distribution channel in a direction intersecting the axis of the distribution channel, and communicates with the mixing channel in a direction intersecting the axis of the mixing channel.

[0012] In some embodiments of the gas-liquid mixing unit, the inlet flow channel further comprises an inlet flow hole and a second distribution channel, the distribution channel is in communication with the second distribution channel at an end away from the outlet end, and the inlet flow hole is in communication with the second distribution channel; the second distribution channel is configured to extend in a direction intersecting the axis of the distribution channel.

[0013] In some embodiments of the gas-liquid mixing unit, the plurality of mixing channels are arranged around the axis of the gas-liquid mixing unit, and the outlet liquid ends of the plurality of mixing channels are arranged around the outlet liquid channel.

[0014] In some embodiments of the gas-liquid mixing unit, the outlet liquid channel comprises at least one second inlet liquid end, and the second inlet liquid end is in communication with the inlet liquid channel.

[0015] The axis of the second inlet liquid end intersects the axis of at least one outlet end.

[0016] In some embodiments of the gas-liquid mixing unit, the gas-liquid mixing unit comprises a main body, and the inlet liquid channel, the inlet flow channel, the outlet liquid channel, and the plurality of mixing channels are formed on the main body.

[0017] In some embodiments of the gas-liquid mixing unit, the main body is integrally formed; or

[0018] The main body comprises an outer shell and a mixing core, the mixing core is sleeved in the outer shell, and the mixing channel and / or the inlet flow channel are formed by the contact between the outer shell and the mixing core.

[0019] The present disclosure also provides a foaming mechanism, comprising:

[0020] A pre-foaming unit is provided with an inlet liquid channel, an inlet flow channel, an outlet liquid channel, and a plurality of mixing channels, the inlet liquid channel is configured to supply a foaming liquid to the plurality of mixing channels, the inlet flow channel is configured to supply a first fluid mixed with the foaming liquid to the plurality of mixing channels, and the outlet liquid channel is configured to supply a mixed liquid of the foaming liquid and the first fluid.

[0021] A liquid supply unit is configured to supply a second fluid.

[0022] A mixing unit is in communication with the liquid supply unit and the pre-foaming unit, and is configured to mix the mixed liquid with the second fluid to form a foam.

[0023] The foaming mechanism of the above scheme can reduce the consumption of the foaming liquid while ensuring better foaming effect. Specifically, the pre-foaming unit of the foaming mechanism is provided with a liquid inlet flow channel, a flow inlet flow channel, a liquid outlet flow channel, and a plurality of mixing flow channels. The liquid inlet flow channel is configured to supply the foaming liquid to the plurality of mixing flow channels. The flow inlet flow channel is configured to supply the first fluid mixed with the foaming liquid to the plurality of mixing flow channels. The liquid outlet flow channel is configured to flow out the mixed liquid of the foaming liquid and the first fluid. In this way, the foaming liquid and the first fluid enter the pre-foaming unit and are divided by the plurality of mixing flow channels, so that the foaming liquid can be mixed with the first fluid in the plurality of mixing flow channels, and the mixed liquid of the first fluid and the foaming liquid is formed under the action of the first fluid. Compared with the viscous foaming liquid, the mixed liquid formed after the foaming liquid is divided by the first fluid multiple times forms a large number of fluid micelles. When the mixed liquid contacts the second fluid, the fluidity is better and the diffusion speed is faster, so that the mixed liquid can quickly mix with the second fluid to form uniform and delicate foam, and better foaming effect can be achieved with less foaming liquid. Compared with the case where the foaming effect is poor when foaming directly in the mixing unit, the foaming effect can be improved by adding the pre-foaming unit to pre-foam the foaming liquid before mixing with the second fluid.

[0024] In some embodiments of the foaming mechanism, the liquid supply unit can generate negative pressure to draw the mixed liquid of the foaming liquid and the first fluid out of the plurality of mixing flow channels under negative pressure.

[0025] In some embodiments of the foaming mechanism, the liquid supply unit includes an acceleration part in communication with the mixing unit and the pre-foaming unit.

[0026] The second fluid generates negative pressure when flowing through the acceleration part to the mixing unit, so that the mixed liquid is sucked into the mixing unit and mixed with the second fluid.

[0027] In some embodiments of the foaming mechanism, the mixing flow channel includes a first liquid inlet end, a flow inlet end located at one end of the mixing flow channel, and a liquid outlet end located at the other end of the mixing flow channel.

[0028] The first liquid inlet end is located between the flow inlet end and the liquid outlet end and is in communication with the liquid inlet flow channel.

[0029] In some embodiments of the foaming mechanism, the pre-foaming unit includes a main body, and the liquid inlet flow channel, the flow inlet flow channel, the liquid outlet flow channel, and the plurality of mixing flow channels are formed on the main body. In some embodiments of the foaming mechanism, the main body is integrally formed; or

[0030] The main body comprises a housing and a mixing core, the mixing core is sleeved in the housing, and the mixing flow channel and / or the inflow flow channel are formed by the contact of the housing and the mixing core.

[0031] In some embodiments of the foaming mechanism, the pre-foaming unit comprises a plurality of first ribs, and a mixing flow channel is arranged between adjacent first ribs; the inflow flow channel comprises a plurality of sub-flow channels, the sub-flow channels comprise an outflow end, and the first ribs have a stop end arranged on a fluid flow path defined corresponding to the outflow end;

[0032] The outflow end and the inflow end are communicated by a first distribution channel, the first distribution channel communicates the sub-flow channel in a direction intersecting the axis of the sub-flow channel and communicates the mixing flow channel in a direction intersecting the axis of the mixing flow channel.

[0033] In some embodiments of the foaming mechanism, the inflow flow channel further comprises an inflow hole and a second distribution channel, one end of the sub-flow channel away from the outflow end is communicated with the second distribution channel, and the inflow hole is communicated with the second distribution channel; the second distribution channel is configured to extend in a direction intersecting the axis of the sub-flow channel.

[0034] In some embodiments of the foaming mechanism, the plurality of mixing flow channels are arranged around the axis of the pre-foaming unit, and the outflow ends of the plurality of mixing flow channels are arranged around the outflow flow channel.

[0035] In some embodiments of the foaming mechanism, the outflow flow channel comprises at least one second inflow end, and the second inflow end is communicated with the inflow flow channel.

[0036] The axis of the second inflow end intersects the axis of at least one outflow end.

[0037] The present disclosure also provides a kitchen and bathroom equipment comprising the foaming mechanism as described above.

[0038] Other features and advantages of the present disclosure will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present disclosure. Other advantages of the present disclosure can be realized and obtained by means of the schemes described in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and are used to explain the technical solutions of the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions of the present disclosure.

[0040] Figure 1 A schematic diagram of the foaming control logic commonly used in the kitchen and bathroom equipment at present;

[0041] Figure 2 This is a schematic diagram showing the installation position of the gas-liquid mixing unit (or pre-foaming unit) in one embodiment of this disclosure;

[0042] Figure 3 This is a schematic diagram of the foaming control logic used in a kitchen and bathroom appliance according to an embodiment of this disclosure;

[0043] Figure 4 This is a schematic diagram of the structure of a gas-liquid mixing unit (or pre-foaming unit) in one embodiment of this disclosure;

[0044] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the gas-liquid mixing unit (or pre-foaming unit) shown.

[0045] Figure 6 for Figure 5 A magnified structural diagram of part A in the diagram;

[0046] Figure 7 This is a partial cross-sectional schematic diagram of the upper connector in a gas-liquid mixing unit (or pre-foaming unit) according to an embodiment of this disclosure;

[0047] Figure 8 This is a schematic diagram of the mixing core in a gas-liquid mixing unit (or pre-foaming unit) according to an embodiment of this disclosure;

[0048] Figure 9 for Figure 8 Enlarged structural diagram of section B;

[0049] Figure 10 This is a cross-sectional view of a gas-liquid mixing unit (or pre-foaming unit) in one embodiment of this disclosure;

[0050] Figure 11 for Figure 10 Enlarged structural diagram of section C;

[0051] Figure 12A , Figure 12B and Figure 12C This is a schematic diagram of the liquid supply unit in the foaming mechanism according to one embodiment of the present disclosure;

[0052] Figure 13 This is a schematic diagram of the assembly of the gas-liquid mixing unit (or pre-foaming unit) and the liquid supply unit in one embodiment of this disclosure.

[0053] Explanation of icon numbers:

[0054] 10' Liquid extraction structure; 20' Liquid storage structure; 30' Mixing structure; 40' Water inlet structure; 50' Bubble outlet structure;

[0055] 10, toilet body; 20, gas-liquid mixing unit (or pre-foaming unit); 21, first rib; 211, stop end; 2111, arc surface; 22, upper joint; 23, mixing core; 24, lower joint; 25, second rib; 30, mixing unit; 40, foam outlet unit; 50, liquid supply unit; 60, liquid storage unit; 70, liquid inlet unit; 80, first pipeline; 90, second pipeline; 100, liquid inlet flow channel; 200, liquid inlet flow channel; 201, branch flow channel; 2011, outlet end; 202, second distribution flow channel; 300, liquid outlet flow channel; 301, second liquid inlet end; 400, mixing flow channel; 401, first liquid inlet end; 402, liquid inlet end; 403, liquid outlet end; 404, smooth section; 405, deflection section; 500, first distribution flow channel; 600, liquid inlet hole; 700, mounting cavity; 800, liquid cavity; 900, passage.

[0056] The implementation, functional features and advantages of the present disclosure will be further described with reference to the embodiments in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0057] The present disclosure describes a plurality of embodiments, but the description is exemplary rather than limiting, and it will be apparent to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope of the embodiments described in the present disclosure. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Unless specifically limited, any feature or element of any embodiment can be used in combination with or in place of any other feature or element of any other embodiment.

[0058] The present disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present disclosure can also be combined with any conventional features or elements to form a unique inventive solution defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present disclosure can be implemented alone or in any appropriate combination. Therefore, the embodiments are not limited by other limitations than those made according to the appended claims and their equivalents. In addition, various modifications and changes can be made within the scope of protection of the appended claims.

[0059] Furthermore, in describing representative embodiments, the specification can have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process depends on the particular order of steps, this description should not be construed as limiting since other steps can be performed in other sequences and / or omitted from the method or process. Other steps can also be added to the method and / or process. The particular sequence of steps described should not be construed as limiting. The claims should not be limited to the particular order of steps described in the specification. Further, the claims should not be limited to steps that are written in the order presented in the specification. One skilled in the art will understand that the steps of the disclosed process can be performed in other sequences and / or omitted from the disclosed process without departing from the spirit and scope of the disclosed embodiments.

[0060] Currently, the foaming control logic commonly used in kitchen and bathroom devices such as intelligent toilet, intelligent cover plate, soap dispenser faucet, and soap dispenser sink is that the liquid extraction structure 10 extracts the foaming liquid from the liquid storage structure 20 to supply to the mixing structure 30 and mixes with the water from the water inlet structure 40 (e.g., clean water or pure water from the municipal water network) to form foam from the foam outlet structure 50, as shown. Figure 1 In the above foaming control logic, the mixing of the foaming liquid and the other liquid in the mixing structure 30 is prone to liquid stratification due to the difference in properties of the two liquids and the fast flow rate, resulting in uneven mixing of the two liquids, and further resulting in the need for more foaming liquid for subsequent foaming to achieve better foaming effect.

[0061] Embodiments of the present disclosure provide a kitchen and bathroom device that can be installed in various environments such as companies, schools, families, and factories to improve and enhance people's quality of life and health. The kitchen and bathroom device can be, but is not limited to, an intelligent toilet, an intelligent cover plate, a soap dispenser faucet, or a soap dispenser sink, as shown. Figure 2 As shown, the intelligent toilet includes a toilet body 10 and a foaming mechanism. The foaming mechanism is arranged on the toilet body 10 and can form foam from the foaming liquid and cover the pot surface of the toilet body 10, so that the intelligent toilet has excellent self-cleaning performance. The intelligent cover plate can replace the cover plate of a common toilet bowl, so that the common toilet bowl has intelligent functions. The intelligent cover plate includes an intelligent cover plate host and a foaming mechanism. The foaming mechanism is arranged on the intelligent cover plate host and can form foam from the foaming liquid and cover the pot surface of the toilet body 10, so that the toilet has excellent self-cleaning performance. The soap dispenser faucet includes a faucet body and a foaming mechanism. The foaming mechanism is arranged on the faucet body and can form foam from the foaming liquid for cleaning. The soap dispenser sink includes a sink body and a foaming mechanism. The foaming mechanism is arranged on the sink body and can form foam from the foaming liquid for cleaning. The foaming liquid can be a water solution containing cleaning components.

[0062] Please refer to Figures 2 to 6 , Figures 8 to 11 and Figure 13The present disclosure provides a foaming mechanism. The foaming mechanism comprises a gas-liquid mixing unit 20, a mixing unit 30, a foam outlet unit 40 and a liquid supply unit 50. The mixing unit 30 and the foam outlet unit 40 can be a split structure or an integrated structure. It can be understood that in other embodiments, the mixing unit 30 can also have the function of the foam outlet unit 40, and can directly foam and discharge the foam. The gas-liquid mixing unit 20 is provided with a liquid inlet flow channel 100, a gas inlet flow channel 200, a liquid outlet flow channel 300 and a plurality of mixing flow channels 400. The liquid inlet flow channel 100 is arranged to supply a foaming liquid to the plurality of mixing flow channels 400, the gas inlet flow channel 200 is arranged to supply a gas mixed with the foaming liquid to the plurality of mixing flow channels 400, and the liquid outlet flow channel 300 is arranged to supply a mixed liquid of the foaming liquid and the gas to the mixing unit 30, so that the mixed liquid is mixed with other liquid in the mixing unit 30 to form a foam. The liquid supply unit 50 is arranged to supply the mixed liquid to the mixing unit 30 to mix with other liquid, and to form a foam in the foam outlet unit 40. In the present disclosure, the liquid supply unit 50 can generate a negative pressure to supply the mixed liquid to the mixing unit 30 to mix with other liquid, and to form a foam in the foam outlet unit 40. The foaming liquid can be an aqueous solution containing a cleaning component. The gas can be air. The other liquid includes but is not limited to clean water or pure water from a municipal water network. The foaming liquid can be stored in a liquid storage unit 60, and the foaming liquid and the gas can enter the gas-liquid mixing unit 20 under the action of the negative pressure of the liquid supply unit 50. For example, the liquid supply unit 50 can be a liquid pump with a power source, including but not limited to a diaphragm pump, a plunger pump, a centrifugal pump, a peristaltic pump and other liquid pumps that need external force to drive, as shown in Figure 12A and Figure 12B The liquid supply unit 50 can also be a pipeline structure that realizes the liquid suction function in a self-suction liquid mode, for example, a Venturi tube, as shown in Figure 12C The function of the liquid supply unit 50 is to provide suction force to transport the mixed liquid formed by the gas-liquid mixing unit 20 to the liquid supply unit 50. In addition, the foaming liquid and the gas can also be supplied to the gas-liquid mixing unit 20 by an additional driving unit, and then the mixed liquid is supplied to the mixing unit 30 to mix with other liquid by the liquid supply unit 50. The other liquid can be supplied to the mixing unit 30 to mix with the mixed liquid by a liquid inlet unit 70. The liquid inlet unit 70 can be a pump body with a driving function, or can be a pipeline structure. The mixing unit 30 can be a structure that can provide a mixing cavity for the mixed liquid and the other liquid. The foam outlet unit 40 has a nozzle structure and can discharge the foam in a certain direction.

[0063] In summary, the implementation of the embodiments of the present disclosure will have the following beneficial effects: the gas-liquid mixing unit 20 of the above scheme is applied to the foaming mechanism and the kitchen and bathroom equipment. In addition to making the foaming mechanism and the kitchen and bathroom equipment have foaming effect, it itself can reduce the consumption of foaming liquid while ensuring better foaming effect. Specifically, the foaming mechanism includes a gas-liquid mixing unit 20, a mixing unit 30, a bubble outlet unit 40, and a liquid supply unit 50. Among them, the liquid supply unit 50 can supply the mixed liquid formed by the gas-liquid mixing unit 20 to the mixing unit 30, so that the mixed liquid can be mixed with other liquids, and the foam is formed in the bubble outlet unit 40. The gas-liquid mixing unit 20 is provided with a liquid inlet flow channel 100, a flow inlet flow channel 200, a liquid outlet flow channel 300, and a plurality of mixing flow channels 400. The liquid inlet flow channel 100 is arranged to supply the foaming liquid to the plurality of mixing flow channels 400. The flow inlet flow channel 200 is arranged to supply the gas mixed with the foaming liquid to the plurality of mixing flow channels 400. The liquid outlet flow channel 300 is arranged to flow out the mixed liquid of the foaming liquid and the gas. In this way, the foaming liquid and the gas enter the gas-liquid mixing unit 20 and are distributed by the plurality of mixing flow channels 400, so that the foaming liquid and the gas can be mixed in the plurality of mixing flow channels 400, and the mixed liquid with a large number of tiny bubbles is formed under the action of the gas. Compared with the viscous foaming liquid, the mixed liquid has a larger volume and is more delicate, and has better flowability, so that it can quickly form a uniform and delicate foam with other liquids, so that less foaming liquid can achieve better foaming effect. Compared with the case where the foaming effect is poor when foaming directly in the mixing unit 30, the foaming liquid is pre-foamed before mixing with other liquids by adding the gas-liquid mixing unit 20, thereby improving the foaming effect.

[0064] In the exemplary embodiments, please combine Figure 12C and Figure 13 The liquid supply unit 50 includes an acceleration part, and the acceleration part is in communication with the mixing unit 30 and the gas-liquid mixing unit 20. When the second fluid flows through the acceleration part to the mixing unit 30, a negative pressure is generated to suck the mixed liquid into the mixing unit 30 and mix with the second fluid. The acceleration part is a Venturi structure. In the exemplary embodiments, please combine Figure 6 and Figure 9The mixing flow channel 400 includes a first liquid inlet end 401, a liquid inlet end 402 at one end of the mixing flow channel 400, and a liquid outlet end 403 at the other end of the mixing flow channel 400. The first liquid inlet end 401 is located between the liquid inlet end 402 and the liquid outlet end 403 and communicates with the liquid inlet flow channel 100. The liquid inlet end 402 communicates with the liquid inlet flow channel 200. The liquid outlet end 403 communicates with the liquid outlet flow channel 300. During use of the foaming mechanism, the foaming liquid enters the mixing flow channel 400 from the first liquid inlet end 401 and mixes with the gas. The first liquid inlet end 401 located between the liquid inlet end 402 and the liquid outlet end 403 can leave enough space between the first liquid inlet end 401 and the liquid outlet end 403 to facilitate the mixing of the foaming liquid and the gas. After use, some foaming liquid remains in the mixing flow channel 400. The first liquid inlet end 401 located between the liquid inlet end 402 and the liquid outlet end 403 can leave space between the first liquid inlet end 401 and the liquid inlet end 402 to store the remaining foaming liquid. After the foaming mechanism is used again, the gas first contacts the remaining foaming liquid to complete the first foaming, and then contacts the foaming liquid newly entered from the first liquid inlet end 401 to complete the second foaming. The cross-sectional shape of the first liquid inlet end 401 perpendicular to the axial direction thereof includes but is not limited to regular shapes such as square, rectangular, triangular, circular, elliptical, trapezoidal, semicircular, or semi-elliptical, etc. The cross-sectional shape of the first liquid inlet end 401 perpendicular to the axial direction thereof can also be irregular.

[0065] In the exemplary embodiments, please continue to refer to Figure 6 and Figure 9 The flow area of the mixing flow channel 400 gradually narrows from the liquid inlet end 402 to the liquid outlet end 403. On the one hand, the liquid inlet end 402 of the mixing flow channel 400 has a larger space to store the remaining foaming liquid, and on the other hand, the mixing flow channel 400 gradually narrows, so that the gas-liquid mixing unit 20 can gradually extrude the mixed liquid, so that the large bubbles break into small bubbles, and the bubbles in the mixed liquid are finer. Moreover, the gradual narrowing of the mixing flow channel 400 also facilitates the collection of the mixed liquid, and facilitates the entry of the mixed liquid into the liquid outlet flow channel 300. The cross-sectional shape of the mixing flow channel 400 perpendicular to the extension direction thereof includes but is not limited to regular shapes such as square, rectangular, triangular, circular, elliptical, trapezoidal, semicircular, or semi-elliptical, etc. The cross-sectional shape of the mixing flow channel 400 perpendicular to the extension direction thereof can also be irregular. In the exemplary embodiments, please refer to Figure 6 , Figure 8 , Figure 9 and Figure 11The gas-liquid mixing unit 20 includes a plurality of first ribs 21, and a mixing flow channel 400 is arranged between adjacent first ribs 21. The first rib 21 has a stop end 211 defining an inflow end 402. In this way, the mixing flow channel 400 can be defined by the first rib 21, and the stability of the structure of the mixing flow channel 400 is ensured. The inflow flow channel 200 includes a plurality of sub-flow channels 201. In this way, the gas can be divided into several gas streams to be mixed with the foaming liquid respectively, so that the gas and the foaming liquid are mixed more uniformly. The sub-flow channel 201 includes an outflow end 2011. The outflow end 2011 communicates with the inflow end 402. A plurality of stop ends 211 correspond to a plurality of outflow ends 2011 one by one and are arranged on the gas flow path defined by the corresponding outflow end 2011 to form a first distribution flow channel 500 between the stop end 211 and the outflow end 2011. The first distribution flow channel 500 communicates with the sub-flow channel 201 in a direction intersecting the axis of the sub-flow channel 201 and communicates with the mixing flow channel 400 in a direction intersecting the axis of the mixing flow channel 400. In this way, by arranging the stop end 211, the gas can be further divided to form more gas streams, further ensuring that the gas and the foaming liquid are mixed more uniformly. Moreover, the arrangement of the stop end 211 can also slow down the flow rate of the gas, so that the gas and the foaming liquid have sufficient time to mix, improving the uniformity of the mixing of the gas and the foaming liquid. The cross-sectional shape of the sub-flow channel 201 perpendicular to the extension direction thereof includes but is not limited to regular polygons such as square, rectangle, triangle, circle, ellipse, trapezoid, semicircle, or semi-ellipse, etc. The cross-sectional shape of the sub-flow channel 201 perpendicular to the extension direction thereof can also be an irregular polygon. In addition, the re-division of the gas by the stop end 211 makes the radial size of the gas stream smaller, which can flow close to and along the side of the first rib 21 facing the mixing flow channel 400, so that the above-mentioned gas stream will contact and drive the foaming liquid close to the first rib 21 position to mix, and the foaming liquid in the middle of the mixing flow channel 400 is not in direct contact with the above-mentioned gas stream, avoiding that the foaming liquid is not fully mixed with the gas stream and is directly driven by the gas to the outflow flow channel 300, resulting in uneven mixing of the mixed liquid. The gas stream with smaller radial size can drive a small amount of foaming liquid to mix with the gas, and the mixing is more uniform. The foaming liquid in the middle of the mixing flow channel 400 will also gradually supplement to the position close to the first rib 21, ensuring the uniformity of subsequent mixing.

[0066] In an exemplary embodiment, as shown in Figure 9 The stop end 211 has an arc surface 2111 protruding towards the inflow end 402, and the two sides of the arc surface 2111 are deflected towards the mixing flow channel 400 on both sides of the arc surface 2111 to form the first distribution flow channel 500. In this way, the arrangement of the arc surface 2111 can reduce the impact of the gas discharged from the outflow end 2011 on the stop end 211, reduce the impact noise, and through the above-mentioned deflection arrangement, the gas can flow more smoothly into the mixing flow channel 400. In an exemplary embodiment, please refer toFigure 6 and Figure 9 The first liquid inlet end 401 is located on the symmetry axis of the mixing flow channel 400. In this way, the foaming liquid can be more evenly distributed after entering the mixing flow channel 400, and the foaming liquid can be supplemented to the positions of the first ribs 21 on both sides of the first liquid inlet end 401 synchronously, thereby ensuring the uniformity of the mixing of the gas and the foaming liquid. In the embodiment of the present disclosure, the axial direction of the first liquid inlet end 401 intersects with the extension direction of the mixing flow channel 400, for example, the axial direction of the first liquid inlet end 401 is perpendicular to the extension direction of the mixing flow channel 400.

[0067] In an exemplary embodiment, as shown in Figure 9 The plurality of outflow ends 2011 and the plurality of inflow ends 402 are communicated through the first flow distribution channel 500, and the first flow distribution channel 500 can separate the adjacent outflow ends 2011 and the inflow ends 402. In this way, the communication area between the outflow ends 2011 and the inflow ends 402 can be increased by the arrangement of the first flow distribution channel 500, thereby reducing the obstruction of the residual foaming liquid to the gas. In addition, the arrangement of the first flow distribution channel 500 can also increase the storage space of the residual foaming liquid, thereby ensuring that there is enough foaming liquid to complete the first foaming and to be divided under the action of the stop end 211, so that the bubbles are more delicate. Figure 9 In an exemplary embodiment, as shown in Figure 9 The orthogonal projection of the outflow end 2011 on the arc surface 2111 is located within the range of the arc surface 2111, so that the gas discharged from the outflow end 2011 can contact the stop end 211 before entering the mixing flow channel 400, thereby ensuring that the gas has a relatively low flow rate in the mixing flow channel 400 and can be fully mixed with the foaming liquid. In an exemplary embodiment, as shown in Figure 9 The ratio of the flow area of the first liquid inlet end 401 to the flow area of the outflow end 2011 can be about 1:3 to 4:1, so that the ratio of the volume of the mixed liquid discharged from the gas-liquid mixing unit 20 to the volume of the foaming liquid entering the gas-liquid mixing unit 20 is greater than 2. For example, the ratio of the flow area of the first liquid inlet end 401 to the flow area of the outflow end 2011 can be about 2.17.

[0068] In an exemplary embodiment, please refer to Figures 4 to 8 and Figure 10The inlet flow channel 200 further comprises an inlet hole 600 and a second distribution channel 202. The distribution channel 201 is in communication with the second distribution channel 202 at an end away from the outlet end 2011, and the inlet hole 600 is in communication with the second distribution channel 202. The second distribution channel 202 is configured to extend in a direction intersecting the axis of the distribution channel 201. The number of inlet holes 600 can be multiple, and they are uniformly distributed along the second distribution channel 202. The second distribution channel 202 can collect gas and uniformly deliver it to the multiple distribution channels 201, ensuring that the gas flow and flow rate of each distribution channel 201 are the same, thereby ensuring the uniformity of the mixing of gas and foaming liquid. The cross-sectional shape of the inlet hole 600 perpendicular to its axial direction includes but is not limited to a square, a rectangle, a triangle, a circle, an ellipse, a trapezoid, a semicircle, or a semi-ellipse, etc. The cross-sectional shape of the inlet hole 600 perpendicular to its axial direction can also be an irregular shape.

[0069] In the exemplary embodiments, please refer to Figure 6 , Figure 8 , Figure 9 and Figure 10 , the multiple mixing flow channels 400 are arranged around the axial direction of the gas-liquid mixing unit 20, and the multiple liquid outlet ends 403 are arranged around the liquid outlet flow channel 300. In this way, the space occupied by the distribution of the multiple mixing flow channels 400 is smaller, and the gas-liquid mixing unit 20 can be miniaturized, facilitating the installation of the gas-liquid mixing unit 20 in the kitchen and bathroom equipment. In the exemplary embodiments, the gas-liquid mixing unit 20 comprises a main body, and the liquid inlet flow channel 100, the inlet flow channel 200, the liquid outlet flow channel 300, and the multiple mixing flow channels 400 are formed on the main body. Among them, the main body is integrally formed; or the main body comprises an outer shell and a mixing core 23, the mixing core 23 is sleeved in the outer shell, and the mixing flow channel 400 and / or the inlet flow channel 100 is formed by the contact of the outer shell and the mixing core 23. In the embodiments of the present disclosure, please refer to Figures 2 to 11The shell comprises an upper joint 22 and a lower joint 24. The upper joint 22, the mixing core 23 and the lower joint 24 can be integrally formed by casting or additive manufacturing. The upper joint 22, the mixing core 23 and the lower joint 24 can also be a split structure and can be connected into one by welding, bonding, clamping or the like. The upper joint 22 has a mounting cavity 700. The liquid inlet channel 100 is arranged on the lower joint 24, and the lower joint 24 is provided with a first pipeline 80 for connecting the liquid inlet channel 100 and the liquid storage unit 60. The mixing core 23 is mounted in the mounting cavity 700. The mixing core 23 has a liquid cavity 800, and the lower joint 24 is partially inserted into the liquid cavity 800 and cooperates with at least one of the mixing core 23 and the upper joint 22 to seal the liquid cavity 800. The mixing channel 400 is located between the upper joint 22 and the mixing core 23. The liquid inlet channel 100 is in communication with the liquid cavity 800. The first liquid inlet end 401 is arranged on the mixing core 23 and is in communication with the liquid inlet channel 100 through the liquid cavity 800, so that the liquid inlet channel 100 is in communication with the plurality of mixing channels 400 through the liquid cavity 800. The inlet flow hole 600 is arranged on the upper joint 22. The second distribution channel 202, the distribution channel 201 and the first distribution channel 500 are located between the upper joint 22 and the mixing core 23, so that the inlet flow channel 200 penetrates through the upper joint 22 and is partially located between the upper joint 22 and the mixing core 23. Among them, a plurality of first ribs 21 can be located on at least one of the upper joint 22 and the mixing core 23 and are attached to the other to form the mixing channel 400. In the embodiment of the present disclosure, a plurality of first ribs 21 are located on the mixing core 23. A plurality of second ribs 25 are arranged on the mixing core 23, and a distribution channel 201 is arranged between adjacent second ribs 25. The plurality of second ribs 25 are attached to the upper joint 22 to form the distribution channel 201. The plurality of second ribs 25 can also be located on the upper joint 22, or part of them are located on the upper joint 22 and the other part are located on the mixing core 23. The embodiment of the present disclosure can make the plurality of mixing channels 400 and the plurality of distribution channels 201 independent of each other by arranging the first ribs 21 and the second ribs 25, increase the connection area between the upper joint 22 and the mixing core 23, improve the connection stability between the upper joint 22 and the mixing core 23, and further ensure the structural stability of the second distribution channel 202, the distribution channel 201, the first distribution channel 500 and the mixing channel 400. The liquid outlet channel 300 is located on the mixing core 23. The upper joint 22 has a passage 900 in communication with the liquid outlet channel 300. The upper joint 22 is provided with a second pipeline 90 for connecting the passage 900 and the liquid supply unit 50. In the embodiment of the present disclosure, a plurality of distribution channels 201 are arranged around the axial direction of the gas-liquid mixing unit 20. The second distribution channel 202 and the first distribution channel 500 are annular and coaxially arranged with the gas-liquid mixing unit 20.

[0070] In the exemplary embodiments, please refer to Figure 9 and Figure 11The liquid outlet flow channel 300 comprises at least one second liquid inlet end 301, which is in communication with the liquid inlet flow channel 100, and the axial direction of the second liquid inlet end 301 intersects with the axial direction of the at least one liquid outlet end 403. Thus, the second liquid inlet end 301 can be arranged to add the foaming liquid into the liquid outlet flow channel 300 again, and the mixed liquid of the gas and the foaming liquid discharged from the liquid outlet end 403 can be mixed again by impact, to complete the third foaming. During the first foaming, the second foaming and the third foaming, the foaming liquid can be gradually added into the gas, so that the foaming liquid can be more fully mixed with the gas, to ensure the uniformity and fineness of the bubbles in the mixed liquid. The cross-sectional shape of the second liquid inlet end 301 perpendicular to the axial direction thereof comprises, but is not limited to, a square, a rectangle, a triangle, a circle, an ellipse, a trapezoid, a semicircle or a semi-ellipse, etc. The cross-sectional shape of the second liquid inlet end 301 perpendicular to the axial direction thereof can also be an irregular shape.

[0071] In the exemplary embodiment, as shown in Figure 9 , the mixed flow channel 400 further comprises a plurality of smooth sections 404, which are sequentially and spacedly arranged along the axial direction of the gas-liquid mixing unit 20, and the adjacent smooth sections 404 are in communication with the deflection sections 405. Thus, the mixed flow channel 400 can form a plurality of stepped sections by the above arrangement, so that the gas-liquid mixing unit 20 can form a plurality of stops for the mixed liquid during the flow of the mixed liquid, to change the flow direction of the mixed liquid. During the above stopping process, the mixed liquid can impact the gas-liquid mixing unit 20 multiple times, to further improve the uniformity of the mixed gas and the foaming liquid. In the embodiment of the present disclosure, the first liquid inlet end 401 is arranged on the smooth section 404 close to the liquid outlet end 2011.

[0072] Please refer to Figures 2 to 6 , Figures 8 to 11 and Figure 13The present disclosure also provides a foaming mechanism. The foaming mechanism comprises a pre-foaming unit 20, a mixing unit 30 and a liquid supply unit 50. The mixing unit 30 can directly discharge the foamed foam. It can be understood that in other embodiments, the foaming mechanism can further comprise a foam outlet unit 40. The mixing unit 30 and the foam outlet unit 40 can be a separate structure or an integrated structure. The pre-foaming unit 20 is provided with a liquid inlet flow channel 100, a flow inlet flow channel 200, a liquid outlet flow channel 300 and a plurality of mixing flow channels 400. The liquid inlet flow channel 100 is arranged to supply the foaming liquid to the plurality of mixing flow channels 400, the flow inlet flow channel 200 is arranged to supply the first fluid mixed with the foaming liquid to the plurality of mixing flow channels 400, and the liquid outlet flow channel 300 is arranged to flow out the mixed liquid of the foaming liquid and the first fluid. The liquid supply unit 50 is used to provide the second fluid, and the mixing unit 30 is in communication with the liquid supply unit 50 and the pre-foaming unit 20, and is used to mix the mixed liquid with the second fluid to form the foam. In the present disclosure, the liquid supply unit 50 can generate a negative pressure, so that the liquid outlet flow channel 300 extracts the mixed liquid of the foaming liquid and the first fluid under the negative pressure to flow out to the plurality of mixing flow channels 400. The foaming liquid can be an aqueous solution containing a cleaning component. The first fluid can be, but is not limited to, air, clean water from a municipal water network, pure water or an aqueous solution, etc. The second fluid includes but is not limited to clean water or pure water from a municipal water network. The foaming liquid can be stored in a liquid storage unit 60, and the foaming liquid and the first fluid can enter the pre-foaming unit 20 under the negative pressure of the liquid supply unit 50. For example, the liquid supply unit 50 can be a liquid pump with a power source, including but not limited to a diaphragm pump, a plunger pump, a centrifugal pump, a peristaltic pump and other liquid pumps that need external force to drive, as shown in Figure 12A and Figure 12B The liquid supply unit 50 can also be a pipeline structure that realizes the liquid suction function in a self-suction liquid mode, for example, a Venturi tube, as shown in Figure 12C The function of the liquid supply unit 50 is to provide suction force to transport the mixed liquid formed by the pre-foaming unit 20 to the liquid supply unit 50. In addition, the foaming liquid and the first fluid can also be supplied to the pre-foaming unit 20 by an additional driving unit, and the mixed liquid is supplied to the mixing unit 30 by the liquid supply unit 50 to mix with the second fluid. The second fluid can be supplied to the mixing unit 30 by a liquid inlet unit 70 to mix with the mixed liquid. The liquid inlet unit 70 can be a pump body with a driving function, or a pipeline structure. The mixing unit 30 can be a structure that can provide a cavity for mixing the mixed liquid and the second fluid. The mixing unit 30 has a nozzle structure and can foam the foam to be discharged in a certain direction.

[0073] In summary, the embodiments of the present disclosure have the following beneficial effects: the foaming mechanism of the above-mentioned scheme can reduce the consumption of the foaming liquid while ensuring better foaming effect. Specifically, the foaming mechanism includes a pre-foaming unit 20, a mixing unit 30, and a liquid supply unit 50. The liquid supply unit 50 is used to supply the second fluid, the mixing unit 30 is in communication with the liquid supply unit 50 and the pre-foaming unit 20, and is used to mix the mixed liquid with the second fluid to form the foam. The pre-foaming unit 20 is provided with a liquid inlet flow channel 100, a flow inlet flow channel 200, a liquid outlet flow channel 300, and a plurality of mixing flow channels 400. The liquid inlet flow channel 100 is arranged to supply the foaming liquid to the plurality of mixing flow channels 400. The flow inlet flow channel 200 is arranged to supply the first fluid mixed with the foaming liquid to the plurality of mixing flow channels 400. The liquid outlet flow channel 300 is arranged to flow the mixed liquid of the foaming liquid and the first fluid. In this way, the foaming liquid and the first fluid enter the pre-foaming unit 20 and are divided by the plurality of mixing flow channels 400, so that the foaming liquid and the first fluid are mixed in the plurality of mixing flow channels 400, respectively, and form a mixed liquid in which the first fluid and the foaming liquid are fully mixed under the action of the first fluid. Compared with the viscous foaming liquid, the mixed liquid formed after the foaming liquid is repeatedly divided by the first fluid has a large number of fluid micro-clusters. When the mixed liquid contacts the second fluid, the fluidity is better and the diffusion speed is faster, so that the mixed liquid can be quickly mixed with the second fluid to form a uniform and delicate foam, and a small amount of foaming liquid can achieve a better foaming effect. Compared with the case where the foaming effect is poor when the foaming is directly performed in the mixing unit 30, the foaming effect can be improved by increasing the pre-foaming unit 20 to pre-foam the foaming liquid before mixing with the second fluid.

[0074] In an exemplary embodiment, the first fluid is a gas, the second fluid is water, and the foaming liquid and the gas enter the pre-foaming unit 20 and are divided by the plurality of mixing flow channels 400, so that the foaming liquid and the gas are mixed in the plurality of mixing flow channels 400, respectively, and form a mixed liquid having a large number of micro-bubbles under the action of the gas. When the mixed liquid contacts the water, a uniform and delicate foam can be quickly formed. In an exemplary embodiment, the first fluid is water, the second fluid is water, and the foaming liquid and the gas enter the pre-foaming unit 20 and are divided by the plurality of mixing flow channels 400, so that the foaming liquid and the water are mixed in the plurality of mixing flow channels 400, respectively. After the foaming liquid and the water are repeatedly mixed, a mixed liquid in which the mixing is sufficiently performed is finally formed. When the mixed liquid contacts the water again, a uniform and delicate foam can be quickly formed. Figure 12C and Figure 13The liquid supply unit 50 includes an acceleration portion in communication with the mixing unit 30 and the pre-foaming unit 20. When the second fluid flows through the acceleration portion to the mixing unit 30, a negative pressure is generated to suck the mixed liquid into the mixing unit 30 and mix with the second fluid. The acceleration portion is a Venturi structure. In an exemplary embodiment, please refer to Figure 6 and Figure 9 The mixing flow channel 400 includes a first liquid inlet end 401, an inlet end 402 at one end of the mixing flow channel 400, and a liquid outlet end 403 at the other end of the mixing flow channel 400. The first liquid inlet end 401 is located between the inlet end 402 and the liquid outlet end 403 and is in communication with the liquid inlet flow channel 100. The inlet end 402 is in communication with the liquid inlet flow channel 200. The liquid outlet end 403 is in communication with the liquid outlet flow channel 300. During use of the foaming mechanism, the foaming liquid enters the mixing flow channel 400 from the first liquid inlet end 401 and mixes with the first fluid. The first liquid inlet end 401 is located between the inlet end 402 and the liquid outlet end 403 to provide sufficient space between the first liquid inlet end 401 and the liquid outlet end 403 for the foaming liquid and the first fluid to mix thoroughly. After use, some foaming liquid remains in the mixing flow channel 400. The first liquid inlet end 401 is located between the inlet end 402 and the liquid outlet end 403 to provide space between the first liquid inlet end 401 and the inlet end 402 for storing the remaining foaming liquid. When the foaming mechanism is used again, the first fluid first contacts the remaining foaming liquid to complete the first foaming, and then contacts the new foaming liquid entering from the first liquid inlet end 401 to complete the second foaming. The cross-sectional shape of the first liquid inlet end 401 perpendicular to its axial direction includes but is not limited to regular shapes such as square, rectangle, triangle, circle, ellipse, trapezoid, semicircle, or semi-ellipse, etc. The cross-sectional shape of the first liquid inlet end 401 perpendicular to its axial direction can also be irregular.

[0075] In an exemplary embodiment, please refer to Figure 6 and Figure 9 The flow area of the mixing flow channel 400 gradually narrows from the inlet end 402 to the liquid outlet end 403. On the one hand, this allows the inlet end 402 of the mixing flow channel 400 to have a larger space to store the remaining foaming liquid, and on the other hand, the gradual narrowing of the mixing flow channel 400 allows the pre-foaming unit 20 to gradually press the mixed liquid, causing large bubbles to break into small bubbles, making the bubbles in the mixed liquid more delicate. Furthermore, the gradual narrowing of the mixing flow channel 400 also facilitates the collection of the mixed liquid, making it easier for the mixed liquid to enter the liquid outlet flow channel 300. The cross-sectional shape of the mixing flow channel 400 perpendicular to its extension direction includes but is not limited to regular shapes such as square, rectangle, triangle, circle, ellipse, trapezoid, semicircle, or semi-ellipse, etc. The cross-sectional shape of the mixing flow channel 400 perpendicular to its extension direction can also be irregular. In an exemplary embodiment, please refer to Figure 6 , Figure 8 , Figure 9 and Figure 11The pre-foaming unit 20 comprises a plurality of first ribs 21, and a mixing flow channel 400 is arranged between adjacent first ribs 21. In this way, the mixing flow channel 400 can be defined by the first ribs 21, and the stability of the structure of the mixing flow channel 400 is ensured. The inflow flow channel 200 comprises a plurality of sub-flow channels 201. In this way, the first fluid can be divided into several streams to be mixed with the foaming liquid respectively, so that the first fluid and the foaming liquid are mixed more uniformly. The sub-flow channel 201 comprises an outflow end 2011. The first rib 21 has a stop end 211 arranged on the fluid flow path defined by the corresponding outflow end 2011; the outflow end 2011 and the inflow end 402 are communicated by the first flow distribution channel 500, which communicates the sub-flow channel 201 in a direction intersecting the axis of the sub-flow channel 201, and communicates the mixing flow channel 400 in a direction intersecting the axis of the mixing flow channel 400. A plurality of stop ends 211 correspond to a plurality of outflow ends 2011 one by one, and are arranged on the first fluid flow path defined by the corresponding outflow end 2011. In this way, by arranging the stop end 211, the first fluid can be further divided to form more streams, further ensuring that the first fluid and the foaming liquid are mixed more uniformly. Moreover, the arrangement of the stop end 211 can also slow down the flow rate of the first fluid, so that the first fluid and the foaming liquid have sufficient time to mix, improving the uniformity of the mixture of the first fluid and the foaming liquid. The cross-sectional shape of the sub-flow channel 201 perpendicular to the extension direction thereof includes but is not limited to regular shapes such as square, rectangle, triangle, circle, ellipse, trapezoid, semicircle or semi-ellipse, etc. The cross-sectional shape of the sub-flow channel 201 perpendicular to the extension direction thereof can also be irregular. In addition, the re-division of the first fluid by the stop end 211 makes the radial size of the formed streams smaller, which can flow close to and along the side of the first rib 21 facing the mixing flow channel 400, so that the above-mentioned streams will contact and drive the foaming liquid close to the first rib 21 position to mix, and the foaming liquid in the middle of the mixing flow channel 400 is not in direct contact with the above-mentioned streams, avoiding that the foaming liquid is not fully mixed with the streams and is directly driven by the first fluid to the outflow flow channel 300, resulting in uneven mixed liquid. The smaller radial size of the streams can drive a small amount of foaming liquid to mix with the first fluid, and the mixing is more uniform. The foaming liquid in the middle of the mixing flow channel 400 will also gradually supplement to the position close to the first rib 21, ensuring the uniformity of subsequent mixing.

[0076] In an exemplary embodiment, as Figure 9As shown, the stop end 211 has an arc surface 2111 protruding towards the inflow end 402, and the two sides of the arc surface 2111 are deflected towards the mixing flow channel 400 located on the two sides of the arc surface 2111 and form the first flow distribution channel 500. In this way, the impact of the first fluid discharged from the outflow end 2011 on the stop end 211 can be reduced by the arrangement of the arc surface 2111, the impact noise is reduced, and the first fluid can flow more smoothly into the mixing flow channel 400 by the deflection arrangement. In the exemplary embodiment, please combine with Figure 6 and Figure 9 , the first liquid inlet end 401 is located on the symmetry axis of the mixing flow channel 400. In this way, the foaming liquid entering the mixing flow channel 400 can be more evenly distributed, and the foaming liquid can be replenished to the positions of the first ribs 21 on both sides of the first liquid inlet end 401 synchronously, ensuring the uniformity of the mixing of the first fluid and the foaming liquid. In the embodiment of the present disclosure, the axial direction of the first liquid inlet end 401 intersects with the extension direction of the mixing flow channel 400, for example, the axial direction of the first liquid inlet end 401 is perpendicular to the extension direction of the mixing flow channel 400. In the exemplary embodiment, as shown in Figure 9 , the plurality of outflow ends 2011 and the plurality of inflow ends 402 are communicated through the first flow distribution channel 500, and the first flow distribution channel 500 can separate the adjacent outflow ends 2011 and the inflow ends 402. In this way, the communication area between the outflow ends 2011 and the inflow ends 402 can be increased by the arrangement of the first flow distribution channel 500, the hindrance of the residual foaming liquid to the first fluid is reduced, and the arrangement of the first flow distribution channel 500 can also increase the storage space of the residual foaming liquid, ensuring that there is enough foaming liquid to complete the first foaming and to be divided under the action of the stop end 211, so that the bubbles are finer.

[0077] In the exemplary embodiment, as shown in Figure 9 , the orthographic projection of the outflow end 2011 on the arc surface 2111 is located within the range of the arc surface 2111, so that the first fluid discharged from the outflow end 2011 can contact the stop end 211 before entering the mixing flow channel 400, ensuring that the first fluid has a relatively low flow rate in the mixing flow channel 400 and can be fully mixed with the foaming liquid. In the exemplary embodiment, as shown in Figure 9 , the ratio of the flow area of the first liquid inlet end 401 to the flow area of the outflow end 2011 can be about 1:3 to 4:1, so that the ratio of the volume of the mixed liquid discharged from the pre-foaming unit 20 to the volume of the foaming liquid entering the pre-foaming unit 20 is greater than 2. For example, the ratio of the flow area of the first liquid inlet end 401 to the flow area of the outflow end 2011 can be about 2.17. In the exemplary embodiment, please combine with Figures 4 to 8 and Figure 10The inflow channel 200 further comprises an inflow hole 600 and a second distribution channel 202. The distribution channel 201 is in communication with the second distribution channel 202 at an end away from the outflow end 2011, and the inflow hole 600 is in communication with the second distribution channel 202. The second distribution channel 202 is configured to extend in a direction intersecting the axis of the distribution channel 201. The inflow hole 600 can be multiple in number and uniformly distributed along the second distribution channel 202. The second distribution channel 202 can collect the first fluid and uniformly deliver the first fluid to the multiple distribution channels 201, so as to ensure that the flow rate and flow velocity of the first fluid of each distribution channel 201 are the same, thereby ensuring the uniformity of the mixing of the first fluid and the foaming liquid. The cross-sectional shape of the inflow hole 600 perpendicular to the axial direction thereof includes but is not limited to a regular polygon such as a square, a rectangle, a triangle, a circle, an ellipse, a trapezoid, a semicircle or a semi-ellipse.

[0078] In the exemplary embodiments, please refer to Figure 6 , Figure 8 , Figure 9 and Figure 10 , the multiple mixing channels 400 are arranged around the axial direction of the pre-foaming unit 20, and the multiple liquid outlets 403 are arranged around the liquid outlet channel 300. In this way, the space occupied by the distribution of the multiple mixing channels 400 is smaller, and the pre-foaming unit 20 can be miniaturized, which facilitates the installation of the pre-foaming unit 20 in the kitchen and bathroom equipment.

[0079] In the exemplary embodiments, the pre-foaming unit 20 comprises a main body, and the liquid inlet channel 100, the inflow channel 200, the liquid outlet channel 300 and the multiple mixing channels 400 are formed on the main body. The main body is integrally formed, or the main body comprises an outer shell and a mixing core 23, the mixing core 23 is sleeved in the outer shell, and the mixing channels 400 and / or the inflow channel 100 are formed by the contact of the outer shell and the mixing core 23. In the embodiments of the present disclosure, please refer to Figures 2 to 11The shell comprises an upper joint 22 and a lower joint 24. The upper joint 22, the mixed core 23 and the lower joint 24 can be integrally formed by casting or additive manufacturing. The upper joint 22, the mixed core 23 and the lower joint 24 can also be a split structure and can be connected as a whole by welding, bonding, clamping and the like. The upper joint 22 has a mounting cavity 700. The liquid inlet channel 100 is arranged on the lower joint 24, and the lower joint 24 is provided with a first pipeline 80 for connecting the liquid inlet channel 100 and the liquid storage unit 60. The mixed core 23 is mounted in the mounting cavity 700. The mixed core 23 has a liquid cavity 800, and the lower joint 24 is partially inserted into the liquid cavity 800 and cooperates with at least one of the mixed core 23 and the upper joint 22 to seal the liquid cavity 800. The mixed flow channel 400 is located between the upper joint 22 and the mixed core 23. The liquid inlet channel 100 is in communication with the liquid cavity 800. The first liquid inlet end 401 is arranged on the mixed core 23 and is in communication with the liquid inlet channel 100 through the liquid cavity 800, so that the liquid inlet channel 100 is in communication with the plurality of mixed flow channels 400 through the liquid cavity 800. The inlet flow hole 600 is arranged on the upper joint 22. The second distribution flow channel 202, the distribution flow channel 201 and the first distribution flow channel 500 are located between the upper joint 22 and the mixed core 23, so that the inlet flow channel 200 penetrates through the upper joint 22 and is partially located between the upper joint 22 and the mixed core 23. Among them, a plurality of first ribs 21 can be located on at least one of the upper joint 22 and the mixed core 23 and are attached to the other to form the mixed flow channel 400. In the embodiment of the present disclosure, a plurality of first ribs 21 are located on the mixed core 23. A plurality of second ribs 25 are arranged on the mixed core 23, and a distribution flow channel 201 is arranged between adjacent second ribs 25. The plurality of second ribs 25 are attached to the upper joint 22 to form the distribution flow channel 201. The plurality of second ribs 25 can also be located on the upper joint 22, or part of them are located on the upper joint 22 and the other part is located on the mixed core 23. The embodiment of the present disclosure can make the plurality of mixed flow channels 400 and the plurality of distribution flow channels 201 independent of each other through the arrangement of the first ribs 21 and the second ribs 25, increase the connection area between the upper joint 22 and the mixed core 23, improve the connection stability between the upper joint 22 and the mixed core 23, and further ensure the structural stability of the second distribution flow channel 202, the distribution flow channel 201, the first distribution flow channel 500 and the mixed flow channel 400. The liquid outlet channel 300 is located on the mixed core 23. The upper joint 22 has a passage 900 in communication with the liquid outlet channel 300. The upper joint 22 is provided with a second pipeline 90 for connecting the passage 900 and the liquid supply unit 50. In the embodiment of the present disclosure, a plurality of distribution flow channels 201 are arranged around the axial direction of the pre-foaming unit 20. The second distribution flow channel 202 and the first distribution flow channel 500 are annular and coaxially arranged with the pre-foaming unit 20.

[0080] In the exemplary embodiments, please combine Figure 9 and Figure 11The liquid outlet flow channel 300 comprises at least one second liquid inlet end 301, which is in communication with the liquid inlet flow channel 100, and the axial direction of the second liquid inlet end 301 intersects with the axial direction of the at least one liquid outlet end 403. Thus, the second liquid inlet end 301 can be arranged to add the foaming liquid into the liquid outlet flow channel 300 again, and the mixed liquid of the first fluid and the foaming liquid discharged from the liquid outlet end 403 can be mixed again by impingement, so as to complete the third foaming. In the process of the first foaming, the second foaming and the third foaming, the foaming liquid can be gradually added into the first fluid, so that the foaming liquid can be more fully mixed with the first fluid, and the uniformity and fineness of the bubbles in the mixed liquid can be ensured. The cross-sectional shape of the second liquid inlet end 301 perpendicular to the axial direction thereof comprises, but is not limited to, a square, a rectangle, a triangle, a circle, an ellipse, a trapezoid, a semicircle or a semi-ellipse, and the like regular geometric shapes. The cross-sectional shape of the second liquid inlet end 301 perpendicular to the axial direction thereof can also be an irregular geometric shape.

[0081] In the example embodiment, as shown in Figure 9 The mixing flow channel 400 further comprises a plurality of smooth sections 404, which are sequentially and spacedly arranged along the axial direction of the pre-foaming unit 20, and the adjacent smooth sections 404 are in communication with the deflection sections 405. Thus, the mixing flow channel 400 can form a plurality of stepped sections by the above arrangement, so that the pre-foaming unit 20 can form a plurality of stops for the mixed liquid in the process of the flow of the mixed liquid, and the flow direction of the mixed liquid is changed. In the process of the stops, the mixed liquid can impinge the pre-foaming unit 20 multiple times, and the uniformity of the mixing of the first fluid and the foaming liquid is further improved. In the embodiment of the present disclosure, the first liquid inlet end 401 is arranged on the smooth section 404 close to the outlet end 2011.

[0082] In the description in the present disclosure, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "mouth structure" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the structure referred to has a particular orientation, is constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0083] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0084] While the embodiments disclosed in the present disclosure are as described above, the content described is merely an embodiment adopted for the purpose of facilitating the understanding of the present disclosure, and is not intended to limit the present disclosure. It should be noted that the above examples or embodiments are merely exemplary and are not limiting. Therefore, the present disclosure is not limited to what is specifically shown and described herein. Various modifications, substitutions, or omissions can be made to the forms and details of the embodiments without departing from the scope of the present disclosure.

Claims

1. A gas-liquid mixing unit for a foaming mechanism, characterized in that, The system is equipped with an inlet channel, an outlet channel, and multiple mixing channels. The inlet channel is configured to supply foaming liquid to the multiple mixing channels. The outlet channel is configured to supply gas mixed with the foaming liquid to the multiple mixing channels. The outlet channel is configured to allow the mixture of foaming liquid and gas to flow out to the mixing unit of the foaming mechanism, where it is mixed with other liquids to form foam.

2. The gas-liquid mixing unit according to claim 1, characterized in that, The mixing channel includes a first liquid inlet, a flow inlet located at one end of the mixing channel, and a liquid outlet located at the other end of the mixing channel; The first liquid inlet is located between the inlet end and the outlet end, and is connected to the liquid inlet channel.

3. The gas-liquid mixing unit according to claim 2, characterized in that, The flow area of ​​the mixing channel gradually narrows from the inlet end to the outlet end.

4. The gas-liquid mixing unit according to claim 2, characterized in that, The gas-liquid mixing unit includes a plurality of first ribs, and a mixing channel is provided between adjacent first ribs. The first ribs have a stop end that defines the inlet end. The inlet channel includes multiple branch channels, each branch channel including an outlet end connected to the inlet end. Multiple stop ends correspond one-to-one with multiple outlet ends and are disposed on the gas flow path defined by the corresponding outlet ends to form a first distribution channel located between the stop end and the outlet end. The first distribution channel extends in a direction intersecting the axis of the branch channel and connects to the branch channel, and extends in a direction intersecting the axis of the mixing channel and connects to the mixing channel.

5. The gas-liquid mixing unit according to claim 4, characterized in that, The inlet channel further includes an inlet orifice and a second distribution channel. The end of the distribution channel away from the outlet end is connected to the second distribution channel, and the inlet orifice is connected to the second distribution channel. The second distribution channel is configured to extend in a direction intersecting the axis of the distribution channel.

6. The gas-liquid mixing unit according to any one of claims 1 to 5, characterized in that, The plurality of mixing channels are arranged axially around the gas-liquid mixing unit, and the liquid outlet ends of the plurality of mixing channels are arranged around the liquid outlet channels.

7. The gas-liquid mixing unit according to claim 6, characterized in that, The liquid outlet channel includes at least one second liquid inlet end, and the second liquid inlet end is connected to the liquid inlet channel; The axial direction of the second inlet end intersects with the axial direction of at least one of the outlet ends.

8. The gas-liquid mixing unit according to any one of claims 1 to 5, characterized in that, The gas-liquid mixing unit includes a main body, and the liquid inlet channel, the inflow channel, the liquid outlet channel and a plurality of mixing channels are formed on the main body.

9. The gas-liquid mixing unit according to claim 8, characterized in that, The main body is integrally formed; or The main body includes a shell and a mixing core, the mixing core being fitted inside the shell, and the mixing channel and / or inlet channel being formed through the contact between the shell and the mixing core.

10. A foaming mechanism, characterized in that, include: The pre-foaming unit is provided with an inlet channel, an outlet channel, and multiple mixing channels. The inlet channel is configured to supply foaming liquid to the multiple mixing channels. The outlet channel is configured to supply a first fluid mixed with the foaming liquid to the multiple mixing channels. The outlet channel is configured to allow the mixture of foaming liquid and the first fluid to flow out. The liquid supply unit is used to provide a second fluid; A mixing unit, connected to the liquid supply unit and the pre-foaming unit, is used to mix the mixture with the second fluid to form foam.

11. The foaming mechanism according to claim 10, characterized in that, The liquid supply unit can generate negative pressure, so that the liquid outlet channel draws the mixture of foaming liquid and first fluid into the plurality of mixing channels under negative pressure and flows out.

12. The foaming mechanism according to claim 11, characterized in that, The liquid supply unit includes an acceleration section, which is connected to the mixing unit and the pre-foaming unit. When the second fluid flows through the acceleration section to the mixing unit, a negative pressure is generated, so that the mixture is drawn into the mixing unit and mixed with the second fluid.

13. The foaming mechanism according to claim 10, characterized in that, The mixing channel includes a first liquid inlet, a flow inlet located at one end of the mixing channel, and a liquid outlet located at the other end of the mixing channel; The first liquid inlet is located between the inlet end and the outlet end, and is connected to the liquid inlet channel.

14. The foaming mechanism according to claim 10, characterized in that, The pre-foaming unit includes a main body, on which the liquid inlet channel, the inlet flow channel, the liquid outlet channel, and a plurality of mixing channels are formed.

15. The foaming mechanism according to claim 14, characterized in that, The main body is integrally formed; or The main body includes a shell and a mixing core, the mixing core being fitted inside the shell, and the mixing channel and / or inlet channel being formed through the contact between the shell and the mixing core.

16. The foaming mechanism according to claim 13, characterized in that, The pre-foaming unit includes a plurality of first ribs, and a mixing channel is provided between adjacent first ribs; the inlet channel includes a plurality of branch channels, the branch channels include an outlet end, and the first ribs have a stop end provided on the fluid flow path defined corresponding to the outlet end; The outlet end and the inlet end are connected through a first distribution channel. The first distribution channel extends in a direction intersecting the axis of the distribution channel and connects to the distribution channel, and extends in a direction intersecting the axis of the mixing channel and connects to the mixing channel.

17. The foaming mechanism according to claim 16, characterized in that, The inlet channel further includes an inlet orifice and a second distribution channel. The end of the distribution channel away from the outlet end is connected to the second distribution channel, and the inlet orifice is connected to the second distribution channel. The second distribution channel is configured to extend in a direction intersecting the axis of the distribution channel.

18. The foaming mechanism according to any one of claims 10 to 17, characterized in that, The plurality of mixing channels are arranged axially around the pre-foaming unit, and the liquid outlet ends of the plurality of mixing channels are arranged around the liquid outlet channels.

19. The foaming mechanism according to claim 18, characterized in that, The liquid outlet channel includes at least one second liquid inlet end, and the second liquid inlet end is connected to the liquid inlet channel; The axial direction of the second inlet end intersects with the axial direction of at least one of the outlet ends.

20. A kitchen and bathroom appliance, characterized in that, Includes the foaming mechanism as described in any one of claims 10 to 19.

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