Foam generating device and fabric treatment equipment

Abstract

The invention relates to a foam generating device and fabric treatment equipment in the technical field of fabric treatment equipment. The foam generating device comprises a pipe shell, and a first liquid cavity, a second liquid cavity and a foaming cavity communicated with the first liquid cavity and the second liquid cavity are formed in the pipe shell and are independent; the first liquid cavity is provided with a first liquid inlet section and a first reducing section which are communicated in sequence, and the tail end of the first reducing section is provided with a first nozzle; the second liquid cavity is provided with a second liquid inlet section, a second gradually-shrinking section and a gradually-expanding section which are communicated in sequence, and a second nozzle is formed in the tail end of the second gradually-shrinking section; wherein the first nozzle and the tail end opening of the divergent section are both communicated with the foaming cavity. According to the foam generating device, the first liquid cavity, the second liquid cavity and the foaming cavity are arranged in the pipe shell at the same time to form an integrated double-channel jet device, the washing effect can be improved, meanwhile, leakage or burst of the pipe shell caused by too large pressure is avoided, and the foam generating device has the advantages of being compact in structure, small in occupied space and high in practicability. And the installation is convenient.

Description

Technical Field

[0001] This invention relates to the field of fabric treatment equipment technology, and more particularly to a foam generating device and fabric treatment equipment. Background Technology

[0002] Detergent foam plays a good role in cleaning and softening clothes during the washing process. Currently, existing washing machines rely on the rotation of the fabric treatment drum to mix the washing water and detergent to produce foam during the washing process. This washing method requires a period of time to produce foam, the detergent takes a long time to take effect, and some detergent does not completely dissolve in the water, affecting the cleaning effect.

[0003] Existing Venturi jet foaming devices can generate negative pressure to draw in air through jets, but there is a large pressure in the pipeline before the jet and a small amount of foaming after the jet. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the technical problem that the existing Venturi jet foaming device has a large pipeline pressure before jetting and a small foaming amount after jetting. To this end, a foam generating device and a fabric processing equipment are provided.

[0005] This invention aims to provide a foam generating device, comprising:

[0006] The tube shell contains an independent first liquid chamber, a second liquid chamber, and a foaming chamber that communicates with the first and second liquid chambers.

[0007] The first liquid chamber has a first liquid inlet section and a first converging section connected in sequence, and the end of the first converging section has a first nozzle;

[0008] The second liquid chamber has a second inlet section, a second converging section and a diverging section connected in sequence, and the end of the second converging section has a second nozzle.

[0009] Among them, the first nozzle and the end of the gradually expanding section are both connected to the foaming chamber.

[0010] In some embodiments, an air intake port is provided on the side wall of the second tapered section corresponding to the second nozzle.

[0011] In some embodiments, a partition plate is provided inside the tube shell, the partition plate extending from one end into the tube shell to partially separate the first fluid cavity and the second fluid cavity, and the other end of the tube shell and the partition plate are located between the ends of the tube shell to form the foaming cavity.

[0012] In some embodiments, the flow surface shape of the first nozzle is designed to be flat;

[0013] The flow surface of the second nozzle is designed to be circular;

[0014] The flow surface shape of the end port of the gradually expanding section is designed to be flat;

[0015] When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

[0016] In some embodiments, the flow surface shape of the first nozzle is designed to be circular;

[0017] The flow surface of the second nozzle is designed to be circular;

[0018] The flow surface shape of the end port of the gradually expanding section is designed to be flat.

[0019] When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

[0020] In some embodiments, the flow surface shape of the first nozzle is designed to be circular;

[0021] The flow surface of the second nozzle is designed to be circular;

[0022] The flow surface shape of the end port of the diffuser is designed to be annular, and the annulus at least surrounds a portion of the first nozzle.

[0023] In some embodiments, the foam generating device includes: an air intake assembly, which includes an air intake pipe and an air intake valve disposed inside the air intake pipe, one end of the air intake pipe being connected to an air intake port and the other end being connected to an air source.

[0024] Among them: the suction valve can open the suction tube when the negative pressure at the suction port reaches the target negative pressure, and close the suction tube when the negative pressure at the suction port does not reach the target negative pressure.

[0025] In some embodiments, the intake valve includes: an elastic element and a sealing element;

[0026] One end of the elastic element is connected to the end of the suction pipe near the suction port, and the other end is connected to the sealing element. Under the elastic force of the elastic element, the sealing element abuts against the air inlet port of the suction pipe away from the suction port.

[0027] In some embodiments, the inhalation tube includes: a first inhalation tube and a second inhalation tube that are detachably connected, one end of the first inhalation tube being integrally formed with the outer wall of the tube housing, and the other end being detachably connected to the second inhalation tube;

[0028] The end of the elastic element is connected to the end of the first air intake tube near the air intake port, and the sealing element abuts against and seals the air inlet port of the second air intake tube under the elastic force of the elastic element.

[0029] In some embodiments, an ozone generator;

[0030] The output end of the ozone generator is connected to one end of the air tube, and the other end of the air tube is connected to the inhalation port.

[0031] The endotracheal tube is equipped with a first pump body and a one-way valve.

[0032] The one-way valve is designed to allow liquid to flow out of the ozone generator and restrict liquid from flowing back into the ozone generator.

[0033] In some embodiments, a fabric treatment apparatus is provided, comprising:

[0034] The foam generating device in Example 1;

[0035] Fabric treatment drum and detergent dispensing assembly;

[0036] The output end of the detergent dispensing component is connected to the first and second liquid inlet sections of the foam generating device, and the foaming chamber of the foam generating device is connected to the fabric treatment cylinder.

[0037] In some embodiments, the foam generating device is connected to the underside of the top cover of the fabric processing equipment via a connector.

[0038] In some embodiments, the water inlet pipe assembly includes a first water inlet pipe and a second water inlet pipe;

[0039] The detergent dispensing assembly includes: a storage chamber for storing fabric treatment agents and a mixing chamber for mixing the fabric treatment agents and wash water;

[0040] A second pump body is installed between the storage chamber and the mixing chamber;

[0041] The output is connected to the mixing chamber;

[0042] The output end of the first water inlet pipe is connected to the mixing chamber, and the output end of the second water inlet pipe is connected to the fabric treatment cylinder.

[0043] The solution provided by this invention has the following advantages compared with the prior art:

[0044] This foam generator integrates a first liquid chamber, a second liquid chamber, and a foaming chamber within its casing, forming a dual-channel jet injector. This allows for the generation of more abundant and finer foam, accelerating the dissolution and release of detergent, improving washing performance, and ensuring sufficient output flow to maintain a stable jet effect within the casing. The integrated dual-channel jet injector not only simultaneously distributes pressure within the foam generator, effectively reducing jet resistance, but also lowers the inlet pressure requirements caused by negative pressure, preventing leaks or bursts in the casing due to excessive pressure. Furthermore, this design gives the foam generator a compact structure, small footprint, and ease of installation. Attached Figure Description

[0045] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0046] Figure 1 This is a schematic diagram of the structure of a foam generating device shown in an embodiment of the present invention;

[0047] Figure 2 This is a cross-sectional view of the foam generating device structure shown in an embodiment of the present invention;

[0048] Figure 3 This is one of the cross-sectional views of the foam generating device shown in the embodiments of the present invention;

[0049] Figure 4 yes Figure 3 Sectional view along the AA direction;

[0050] Figure 5 yes Figure 3 Sectional view along the BB direction;

[0051] Figure 6 yes Figure 3 Sectional view along the CC direction;

[0052] Figure 7 This is a second cross-sectional view of the foam generating device shown in an embodiment of the present invention;

[0053] Figure 8 yes Figure 7 Sectional view in the DD direction from the center;

[0054] Figure 9 yes Figure 7 Sectional view in the EE direction;

[0055] Figure 10 yes Figure 7 Sectional view in the center (FF direction);

[0056] Figure 11 This is the third cross-sectional view of the foam generating device shown in the embodiment of the present invention;

[0057] Figure 12 yes Figure 11 Central section view (GG direction);

[0058] Figure 13 yes Figure 11 Cross-sectional view along the HH direction;

[0059] Figure 14 yes Figure 11 Cross-sectional view in the JJ direction;

[0060] Figure 15 This is one of the partial schematic diagrams of the fabric processing equipment shown in the embodiments of the present invention;

[0061] Figure 16 This is a second partial schematic diagram of the fabric processing equipment shown in an embodiment of the present invention.

[0062] In the diagram: 1-Shell, 101-First fluid chamber, 1011-First inlet section, 1012-First converging section, 1013-First nozzle, 102-Second fluid chamber, 1021-Second inlet section, 1022-Second converging section, 1023-Diverging section, 1024-Second nozzle, 1025-End port, 1026-Inlet, 103-Fogging chamber, 2-Separator plate, 3-Inlet assembly, 301-Inlet pipe, 3011-First... 1-Inhalation pipe, 3012-Second suction pipe, 302-Elastic element, 303-Sealing element, 304-Sealing gasket, 4-Ozone generator, 5-Air pipe, 6-First pump body, 7-One-way valve, 8-Fabric treatment cylinder, 9-Detergent dispensing assembly, 901-Storage chamber, 902-Mixing chamber, 903-Second pump body, 904-Output end, 11-Water inlet pipe assembly, 111-First water inlet pipe, 112-Second water inlet pipe, 12-Connector.

[0063] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0064] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0065] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] Existing Venturi jet foaming devices can generate negative pressure to draw in air through jets, but there is a large pressure in the pipeline before the jet and a small amount of foaming after the jet.

[0067] Based on this, the following embodiments are proposed:

[0068] Example 1

[0069] like Figure 1 , 2 As shown, this embodiment provides a foam generating device, including:

[0070] The tube shell 1 contains an independent first fluid cavity 101, a second fluid cavity 102, and a foaming cavity 103 that communicates with the first fluid cavity 101 and the second fluid cavity 102.

[0071] The first fluid cavity 101 has a first liquid inlet section 1011 and a first tapering section 1012 connected in sequence, and the end of the first tapering section 1012 has a first nozzle 1013.

[0072] The second fluid cavity 102 has a second liquid inlet section 1021, a second converging section 1022 and a expanding section 1023 connected in sequence, and the end of the second converging section 1022 has a second nozzle 1024.

[0073] Wherein: the first nozzle 1013 and the end of the gradually expanding section 1023 are both connected to the foaming chamber 103.

[0074] In this embodiment, the foam generating device can be applied to a fabric processing device. The foam generating device has a tubular structure, which includes a shell 1. A first fluid cavity 101, a second fluid cavity 102, and a foaming cavity 103 are formed inside the shell 1. The first fluid cavity 101 and the second fluid cavity 102 are independent of each other. The foaming cavity 103 is connected to the first fluid cavity 101 and the second fluid cavity 102 respectively. The liquid flowing out from the first fluid cavity 101 and the second fluid cavity 102 will mix in the foaming cavity 103 and generate foam. The first fluid cavity 101 has a first inlet section 1011 and a first tapering section 1012. The first tapering section 1012 can pressurize the liquid in the first fluid cavity 101 by reducing the flow area, so that the liquid can be sprayed into the foaming cavity 103 at a faster speed. A first nozzle 1013 is provided at the end of the first tapering section 1012. The first inlet section 1011 is located upstream of the first tapering section 1012. The liquid enters the first fluid cavity 101 from the first inlet section 1011 and flows out of the first fluid cavity 101 from the first nozzle 1013. The second fluid cavity 102 has a second inlet section 1021, a second converging section 1022, and a expanding section 1023. A second nozzle 1024 is provided at the end of the second converging section 1022. The second converging section 1022 can pressurize the liquid in the second fluid cavity 102 by reducing the flow area, so that the liquid can be sprayed from the second nozzle 1024 into the expanding section 1023 at a relatively fast speed to form foam. The first nozzle 1013 and the end outlet of the expanding section 1023 are respectively connected to the foaming cavity 103. Therefore, the foam formed in the expanding section 1023 will flow into the foaming cavity 103 from the end outlet of the expanding section 1023 and mix with the liquid flowing out from the first nozzle 1013, thereby generating more foam and improving the foam generation efficiency. The sum of the flow cross-sectional areas of the first liquid inlet section 1011 and the second liquid inlet section 1021 is greater than the sum of the flow cross-sectional areas of the first nozzle 1013 and the second nozzle 1024. This ensures that the pressure on the liquid increases when it flows through the first converging section 1012 and the second converging section 1022 respectively.

[0075] Specifically, when the foam generating device operates within the fabric processing equipment, liquid enters the first fluid chamber 101 and the second fluid chamber 102 from the first inlet section 1011 and the second inlet section 1021, respectively. The liquid in the first fluid chamber 101 flows from the first inlet section 1011 into the first converging section 1012, where its pressure increases, causing it to be ejected from the first nozzle 1013 and enter the foaming chamber 103. Similarly, the liquid in the second fluid chamber 102 flows from the second inlet section 1021 into the second converging section 1022, where its pressure increases, causing the second fluid... The liquid in cavity 102 is sprayed from the second nozzle 1024 into the diffuser section 1023 at a relatively high speed and forms foam. These foams flow into the foaming cavity 103 from the end outlet of the diffuser section 1023. At this time, the liquid sprayed from the first nozzle 1013 mixes with the foam. Under the impact of the liquid sprayed from the first nozzle 1013, these foams will be differentiated into more and richer fine foams in the foaming cavity 103. Then these fine foams continue to move along the flow channel from the foaming cavity 103 and enter the fabric treatment drum of the fabric treatment equipment to participate in washing. When the foam generator pressurizes the liquid, the total pressure inside the shell 1 increases. The dual-channel jet generator formed by the first tapering section 1012 and the second tapering section 1022 can simultaneously reduce the pressure of the foam generator, effectively reducing the jet resistance. It also reduces the inlet pressure requirement caused by the negative pressure generated by the jet and increases the outlet flow rate. This ensures that the foam generator maintains sufficient output flow to form a stable jet effect inside the shell 1, and also reduces the pressure inside the shell 1 before the liquid is sprayed, so as to ensure that the pressure inside the shell 1 is not too high and to prevent leakage or rupture of the shell 1 due to excessive pressure.

[0076] Preferably, the first fluid cavity 101 and the second fluid cavity 102 have the same length, the first nozzle 1013 and the end outlet of the expanding section 1023 are located on the same vertical plane, the first contracting section 1012 and the expanding section 1023 have the same length, and the lengths of the first contracting section 1012 and the expanding section 1023 range from 8 mm to 14 mm. Further, the lengths of the first contracting section 1012 and the expanding section 1023 range from 10 mm to 12 mm.

[0077] Preferably, the inner diameter of the first nozzle 1013 and the second nozzle 1024 is between 1 mm and 3 mm, and further, the inner diameter of the first nozzle 1013 and the second nozzle 1024 is between 1.5 mm and 2.5 mm; the inner diameter of the foaming cavity 103 is between 4 mm and 8 mm, and further, the inner diameter of the foaming cavity 103 is between 5 mm and 7 mm.

[0078] This foam generating device forms an integrated dual-channel jet generator by simultaneously setting a first fluid chamber 101, a second fluid chamber 102, and a foaming chamber 103 within the casing 1. This enables the generation of more and richer fine foam, accelerates the dissolution and release of detergent, improves the washing effect, and ensures that the foam generating device maintains sufficient output flow to form a stable jet effect within the casing 1. The integrated dual-channel jet generator not only simultaneously divides the pressure of the foam generating device, effectively reducing jet resistance, but also reduces the inlet water pressure requirement caused by negative pressure in the jet, preventing leakage or bursting of the casing 1 due to excessive pressure. Furthermore, this foam generating device has the advantages of compact structure, small footprint, and easy installation.

[0079] Optionally, such as Figure 2 As shown, in one implementation of this embodiment,

[0080] An air intake 1026 is provided on the side wall of the second tapering section 1022 corresponding to the second nozzle 1024.

[0081] In this embodiment, the first tapering section 1012 and the second tapering section 1022 can increase the liquid pressure in the first fluid cavity 101 and the second fluid cavity 102, respectively. However, in this foam generating device, the air intake 1026 is only opened on the side wall of the second tapering section 1022, and the air intake 1026 or other through-hole structures are not opened on the side wall of the first tapering section 1012. The gas enters the second fluid cavity 102 from the air intake 1026 and mixes with the liquid therein to generate foam.

[0082] Specifically, when the foam generating device pressurizes the liquid, the total pressure inside the shell 1 increases. By simultaneously dividing the pressure of the foam generating device with the first tapering section 1012 and the second tapering section 1022, the pressure inside the shell 1 can be continuously reduced, preventing leakage or rupture due to excessive pressure. Since no other through-hole structures are opened on the side wall of the first tapering section 1012, the first tapering section 1012 can serve as a bypass for water inlet and a jet acceleration function. Therefore, the resistance encountered by the liquid when flowing through the first tapering section 1012 is small, and the liquid flow velocity in the first fluid cavity 101 is faster than that in the second fluid cavity 102, resulting in a larger impact force. As the liquid in the second fluid chamber 102 flows through the second converging section 1022, its pressure gradually increases. During the outward ejection of the liquid from the second converging section 1022, a negative pressure is generated at the suction port 1026. Under this negative pressure, the gas at the suction port 1026 enters the second converging section 1022 from outside the second fluid chamber 102 and mixes with the liquid flowing through it. When the gas mixes with the high-speed ejected liquid and enters the expanding section 1023 together, the gas generates a large amount of foam under the impact of the liquid. This foam enters the foaming chamber 103 from the expanding section 1023 and mixes with the high-speed liquid ejected from the first converging section 1012. The design of one liquid chamber for suction and foaming, and another for liquid ejection, allows for secondary mixing of the liquid and foam. This reduces the internal pressure of the foam generating device, lowers the pressure risk of the casing 1, and increases the total amount of foam-mixed liquid ejected, achieving better coverage of the fabric. In addition, in the foaming chamber 103, since the liquid ejected from the first nozzle 1013 has a high flow rate, a low-pressure zone will be formed within a certain range of the first nozzle 1013. This will make it easier for the foam ejected from the second nozzle 1024 to accelerate into the foaming chamber 103 and mix thoroughly with the liquid ejected from the first nozzle 1013.

[0083] Preferably, the gas entering the second fluid chamber 102 from the air intake 1026 can be air or a gas with sterilization effect such as ozone.

[0084] By opening an air intake 1026 only on the side wall of the second tapering section 1022, the foam generating device can not only take into account the generation of foam and ensure sufficient water flow, but also perform secondary mixing of foam, increasing the total spray volume of foam-mixed liquid, thereby enabling the detergent to take effect more quickly and achieving better coverage of the fabric.

[0085] Optionally, such as Figure 2 As shown, in one implementation of this embodiment,

[0086] A partition plate 2 is provided inside the tube shell 1. The partition plate 2 extends from one end into the tube shell 1 to partially separate the first fluid cavity 101 and the second fluid cavity 102. The other end of the tube shell 1 and the partition plate 2 are located between the ends of the tube shell 1 to form the foaming cavity 103.

[0087] In this embodiment, a partition plate 2 is also provided inside the tube shell 1. The partition plate 2 is used to divide the inside of the tube shell 1 into a first fluid chamber 101 and a second fluid chamber 102. The first fluid chamber 101 and the second fluid chamber 102 are independent of each other, and the liquids in the first fluid chamber 101 and the second fluid chamber 102 do not interfere with each other. When the liquid in the second fluid chamber 102 draws in gas, it will not allow the gas to enter the first fluid chamber 101. This allows the liquids in the first fluid chamber 101 and the second fluid chamber 102 to smoothly achieve the purpose of providing sufficient water flow and generating a large amount of foam, respectively. The partition plate 2 allows the first nozzle 1013 and the second nozzle 1024 to share a single partition structure and achieve independence from each other. Thus, an integrated dual-channel jet generator is formed inside the tube shell 1, making the structure of the foam generating device more compact, smaller in size, and easier for operators to install and disassemble. By using the partition plate 2 to integrate the first fluid chamber 101 and the second fluid chamber 102 inside the shell 1 and arrange them adjacent to each other, the overall liquid flow rate of the foam generating device is effectively increased while the inner diameter of the second nozzle 1024 remains unchanged. On the one hand, this increases the flow rate of the final foam mixture liquid, and on the other hand, it reduces the risk of the shell 1 bursting due to excessive pipeline resistance caused by setting a single liquid chamber.

[0088] Preferably, the shell 1 has a circular cross-section, and the partition plate 2 divides the flow cross-section of the first fluid cavity 101 and the second fluid cavity 102 into two semicircles with the same area. The inner diameter of the shell 1 ranges from 8 mm to 16 mm, and more specifically, the inner diameter of the shell 1 ranges from 11 mm to 13 mm.

[0089] By setting a partition plate 2 inside the shell 1, the first fluid chamber 101 and the second fluid chamber 102 form an integrated dual-channel jet inside the shell 1. This not only reduces the volume of the foam generating device, but also increases the flow rate of the foam mixture output by the foam generating device, and reduces the risk of the shell 1 bursting, thereby improving the overall performance of the foam generating device.

[0090] Optionally, such as Figure 3-6 As shown, in one implementation of this embodiment,

[0091] The flow surface of the first nozzle 1013 is designed to be flat;

[0092] The flow surface of the second nozzle 1024 is designed to be circular;

[0093] The flow surface shape of the end port 1025 of the gradually expanding section 1023 is designed to be flat;

[0094] When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

[0095] In this embodiment, the second nozzle 1024 is located at the end of the second converging section 1022, so the flow cross-sectional area of ​​the second nozzle 1024 is smaller than the flow cross-sectional area of ​​the second liquid inlet section 1021. After being pressurized, the liquid mixed with the gas will be jetted from the second nozzle 1024 to the expanding section 1023. Since the gas and liquid will be sprayed out from the second nozzle 1024 to form foam after being mixed, the flow surface of the second nozzle 1024 is designed to be circular, which can make the pressure of the liquid mixed with the gas more balanced in all directions during jetting, and make the foaming effect of the foam generating device better. The flow cross-sectional shape of the end port 1025 of the diffuser section 1023 is flat. The diffuser section 1023 is located downstream of the second nozzle 1024. The flow cross-section of the end port 1025 of the diffuser section 1023 is designed to be flat. When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle. When the liquid mixed with gas enters the diffuser section 1023 through a high-speed jet, the pressure it experiences will suddenly decrease. This will cause the liquid mixed with gas to... The expanding section 1023 generates more foam, improving the working efficiency of the foam generating device, and can make the maximum use of the internal space of the expanding section 1023 to maximize the foam ejected from the end port 1025. The first nozzle 1013 is formed at the end of the first contracting section 1012. The flow surface of the first nozzle 1013 is designed to be flat. When the liquid passes through the first inlet section 1011 and the first contracting section 1012, the pressure will increase so that it can be ejected from the first nozzle 1013 into the foaming chamber 103. The end of the first tapering section 1012 is the end of the first fluid cavity 101. The flow surface of the first nozzle 1013 is flat, meaning that the end of the first fluid cavity 101 can be used as the first nozzle 1013. When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle. This maximizes the utilization of the internal space of the first fluid cavity 101 and increases the flow rate of liquid jetted from the first nozzle 1013 as much as possible.

[0096] By using the end of the first fluid cavity 101 as the first nozzle 1013 and setting the flow cross section of the second nozzle 1024 to be circular, the foam generating device can ensure a large foam flow rate while generating foam, thereby further improving the washing efficiency of clothes.

[0097] Optionally, such as Figure 7-10 As shown, in one implementation of this embodiment,

[0098] The flow surface of the first nozzle 1013 is designed to be circular;

[0099] The flow surface of the second nozzle 1024 is designed to be circular;

[0100] The flow surface shape of the end port 1025 of the gradually expanding section 1023 is designed to be flat.

[0101] When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

[0102] In this embodiment, the flow cross-sections of both the first nozzle 1013 and the second nozzle 1024 are designed to be circular. This makes the nozzle shape more regular and the pressure in all directions during jetting more balanced, thereby ensuring foam generation efficiency and making the foaming effect more stable. The diffuser 1023 is located at the downstream end of the second fluid cavity 102. The end port 1025 of the diffuser 1023 is designed to be flat. When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle. This allows for full utilization of the space within the second fluid cavity 102, thereby further increasing the liquid flow rate at the end port of the diffuser 1023.

[0103] By setting the above structure, the foam generating device can maintain a more stable jet foaming effect while ensuring sufficient liquid flow, keeping the detergent's volatilization and dissolution rates stable, thereby improving the reliability of the foam generating device.

[0104] Optionally, such as Figure 11-14 As shown, in one implementation of this embodiment,

[0105] The flow surface of the first nozzle 1013 is designed to be circular;

[0106] The flow surface of the second nozzle 1024 is designed to be circular;

[0107] The flow surface shape of the end port 1025 of the expanding section 1023 is designed to be annular, and the annulus at least surrounds a portion of the first nozzle 1013.

[0108] In this embodiment, the flow cross-sections of both the first nozzle 1013 and the second nozzle 1024 are designed to be circular, which makes the nozzle shape more regular and the pressure in all directions during jetting more balanced, thereby ensuring foam generation efficiency and making the foaming effect more stable. The end opening of the diffuser 1023 is arranged around the outside of the first nozzle 1013, so that the end opening of the diffuser 1023 surrounds at least a portion of the first nozzle 1013.

[0109] For example, the flow cross-sectional shape of the end port of the gradually expanding section 1023 can be crescent-shaped, and the inner circumferential surface of the end port of the crescent-shaped gradually expanding section 1023 is close to the first nozzle 1013 with a circular flow cross-section, so as to form a semi-encirclement of the first nozzle 1013. When the first nozzle 1013 jets outward, the contact area between the foam ejected from the end port of the gradually expanding section 1023 and the jet of the first nozzle 1013 will be larger, so that the foam can be more fully mixed with the ejected liquid. Under the impact of the jet of the first nozzle 1013 on the foam, more and finer foam will be generated in the foaming chamber 103 to accelerate the dissolution and evaporation of the detergent.

[0110] By setting the above structure, the end of the gradually expanding section 1023 forms a semi-encirclement with the first nozzle 1013. By increasing the contact area between the jet and the foam, the detergent's volatilization and dissolution speed are further improved, thereby enhancing the washing effect on clothes.

[0111] Optionally, such as Figure 3-14 As shown, in one implementation of this embodiment, the foam generating device further includes:

[0112] The suction assembly 3 includes a suction pipe 301 and a suction valve disposed inside the suction pipe 301. One end of the suction pipe 301 is connected to the suction port 1026, and the other end is connected to the air source.

[0113] Specifically, the suction valve can open the suction pipe 301 when the negative pressure at the suction port 1026 reaches the target negative pressure, and close the suction pipe 301 when the negative pressure at the suction port 1026 does not reach the target negative pressure.

[0114] In this embodiment, the foam generating device further includes an air intake assembly 3, which includes an air intake pipe 301 and an air intake valve. The air intake valve is disposed inside the air intake pipe 301 and can automatically open and close under the force generated by negative pressure. One end of the air intake pipe 301 is connected to the air intake port 1026, and the other end is connected to a gas source. The gas generated by the gas source passes through the air intake valve and enters the air intake port 1026 from the air intake pipe 301 until it enters the second fluid chamber 102, thereby achieving the mixing of gas and liquid to generate foam.

[0115] Specifically, when the foam generating device is started, the liquid flows in the second converging section 1022, passes through the air intake 1026, and is ejected outward at high speed from the second nozzle 1024. During this process, a negative pressure is generated near the air intake 1026, which draws the gas outside the second fluid chamber 102 into the air intake 1026. When this negative pressure reaches the target negative pressure required for the air intake valve to open, the air intake valve opens, and the air intake pipe 301 is connected. The gas generated by the gas source passes through the air intake valve and enters the air intake pipe 301, and enters the second converging section 1022 from the air intake 1026. After mixing with the liquid, the gas is ejected outward from the second nozzle 1024, thereby generating foam. When the foam generator stops operating, the negative pressure at the suction port 1026 will decrease to less than the target negative pressure required to open the suction valve. At this time, the suction valve closes, the suction pipe 301 is disconnected, and the gas cannot pass through the suction valve into the suction port 1026. At the same time, the liquid in the second fluid chamber 102 cannot pass through the suction valve to overflow, thus improving the sealing performance of the foam generator.

[0116] By setting the suction component 3, the suction valve of the foam generator can be automatically opened and closed when the device starts or stops running. This prevents gas from leaking out through the suction pipe 301 and also prevents liquid inside the foam generator from overflowing through the suction valve. This enhances the sealing performance of the foam generator while ensuring foam generation efficiency.

[0117] Optionally, such as Figure 3-14 As shown, in one implementation of this embodiment,

[0118] The intake valve includes: elastic element 302 and sealing element 303;

[0119] One end of the elastic element 302 is connected to the end of the suction pipe 301 near the suction port 1026, and the other end is connected to the sealing element 303. Under the elastic force of the elastic element 302, the sealing element 303 abuts against the air inlet port of the suction pipe 301 away from the suction port 1026.

[0120] In this embodiment, the suction valve in the suction assembly 3 includes an elastic element 302 and a sealing element 303. One end of the elastic element 302 is connected to the end of the suction pipe 301 near the suction port 1026, and the other end of the elastic element 302 is connected to the sealing element 303. The sealing element 303 can reciprocate as the elastic element 302 extends and retracts. The sealing element 303 is located inside the end of the suction pipe 301 away from the suction port 1026. Under normal conditions, the elastic element 302 is in a slightly compressed state.

[0121] Specifically, when the foam generating device is not running, there is no negative pressure generated near the air intake 1026. The elastic element 302, which is under compression, will exert a force on the sealing element 303 away from the air intake 1026, thereby pressing the sealing element 303 against the air inlet port formed at the end of the air intake pipe 301 away from the air intake 1026. At this time, the sealing element 303 closes the air inlet port, and the gas is blocked outside the air intake pipe 301 and cannot enter the air intake assembly 3. When a negative pressure is generated at the air intake 1026, the force of the negative pressure will overcome the elastic force of the elastic element 302 and pull the sealing element 303 to move towards the air intake 1026. At this time, the air inlet port opens, the gas enters the air intake pipe 301 and enters the second fluid chamber 102 through the air intake 1026, and finally mixes with the liquid and is sprayed out from the second nozzle 1024 to generate foam.

[0122] By setting an air intake valve composed of an elastic element 302 and a sealing element 303, the sealing element 303 can automatically open the air intake pipe 301 under negative pressure without the aid of other power components, and automatically disconnect the air intake pipe 301 when the negative pressure disappears. Thus, while realizing the automatic opening and closing of the air intake valve when the foam generating device starts or stops running, the number of parts of the air intake assembly 3 is reduced, and the structure of the air intake assembly 3 is simplified.

[0123] Optionally, such as Figure 3-14 As shown, in one implementation of this embodiment,

[0124] The suction tube 301 includes: a first suction tube 3011 and a second suction tube 3012 that are detachably connected. One end of the first suction tube 3011 is integrally formed with the outer wall of the tube shell 1, and the other end is detachably connected to the second suction tube 3012.

[0125] The end of the elastic member 302 is connected to one end of the first air intake pipe 3011 near the air intake port 1026, and the sealing member 303 abuts against and seals the air intake port of the second air intake pipe 3012 under the elastic force of the elastic member 302.

[0126] In this embodiment, the inhalation tube 301 includes a first inhalation tube 3011 and a second inhalation tube 3012, which are detachably connected. A portion of the outer wall of the tube shell 1 extends away from the inhalation port 1026 to form one end of the first inhalation tube 3011, and the other end of the first inhalation tube 3011 is detachably connected to the second inhalation tube 3012.

[0127] Preferably, the outer wall of the first suction pipe 3011 and the inner wall of the second suction pipe 3012 are provided with mutually mating threads, and the installation and disassembly of the two can be completed by rotating the first suction pipe 3011 and the second suction pipe 3012 relative to each other.

[0128] By incorporating a detachable suction pipe 301, technicians can conveniently maintain and repair the components and related structures located inside the suction pipe 301, thereby improving the maintenance efficiency of the foam generator.

[0129] The internal components are an elastic element 302 and a sealing element 303. The end of the elastic element 302 is connected to the end of the first suction pipe 3011 near the suction port 1026. The sealing element 303, under the elastic force of the elastic element 302, abuts against and seals the air inlet port of the second suction pipe 3012. By setting a suction valve composed of the elastic element 302 and the sealing element 303, the sealing element 303 can automatically open the suction pipe 301 under negative pressure without the aid of other power components, and automatically disconnect the suction pipe 301 when the negative pressure disappears. Thus, while realizing the automatic opening and closing of the suction valve when the foam generating device starts or stops running, the number of parts of the suction assembly 3 is reduced, and the structure of the suction assembly 3 is simplified.

[0130] Optionally, such as Figure 15 As shown, in one implementation of this embodiment, the foam generating device further includes:

[0131] Ozone generator 4;

[0132] The output end 904 of the ozone generator 4 is connected to one end of the air pipe 5, and the other end of the air pipe 5 is connected to the air inlet 1026.

[0133] The trachea 5 is equipped with a first pump body 6 and a one-way valve 7;

[0134] The one-way valve 7 is designed to allow liquid to flow out of the ozone generator 4 and restrict liquid backflow into the ozone generator 4.

[0135] In this embodiment, the foam generating device further includes an ozone generator 4 and a gas pipe 5. The output end 904 of the ozone generator 4 is connected to one end of the gas pipe 5, and the other end of the gas pipe 5 is connected to the air intake 1026. The ozone gas generated by the ozone generator 4 can pass through the gas pipe 5 through the air intake 1026 and enter the second fluid chamber 102 to mix with the liquid, thereby allowing the ozone gas to adhere to the foam generated by the foam generating device. A first pump body 6 and a one-way valve 7 are provided on the gas pipe 5. The first pump body 6 is used to pump the ozone gas generated by the ozone generator 4, allowing the ozone gas to pass through the one-way valve 7 and enter the air intake 1026. The one-way valve 7 allows the ozone gas to flow out of the ozone generator 4 and restricts the ozone gas from flowing back into the ozone generator 4. This helps to prevent the internal pressure of the ozone generator 4801 from becoming too high, ensuring the safe operation of the equipment. The use of the one-way valve 7 ensures that the ozone gas is not wasted, and all the generated ozone gas can be effectively used for foam generation and treatment, improving the utilization efficiency of ozone gas.

[0136] Specifically, when the foam generator is started, the liquid flows in the second converging section 1022, passes through the intake port 1026, and is ejected outward at high speed from the second nozzle 1024. During this process, a negative pressure is generated near the intake port 1026. If ozone needs to be introduced into the fabric treatment cylinder at this time, the ozone generator 4 and the first pump body 6 are started simultaneously. The first pump body 6 pushes the ozone gas towards the intake port 1026. When the ozone gas passes through the one-way valve 7, the one-way valve 7 opens, and the ozone gas then passes through the intake port 1026 and enters the second nozzle 1024. Within the second converging section 1022, the gas mixes with the liquid. When the first pump 6 stops working or the foam generator stops running, the one-way valve 7 automatically closes to prevent gas and liquid backflow and leakage. At this time, ozone-containing foam is sprayed from the second nozzle 1024. The ozone-containing foam mixes with the liquid sprayed from the first nozzle 1013 and enters the fabric treatment cylinder together. By introducing ozone gas into the foam generator, the physical properties of the foam can be changed, which may make the foam finer and more stable, thereby improving the washing effect of the foam on the fabric.

[0137] By connecting the ozone generator to the foam generator, the supply of ozone gas can be precisely controlled, ensuring that the foam in the foam generator is evenly covered by ozone gas. This allows the ozone gas to adhere directly to the foam, leveraging its strong oxidizing properties to enhance the sterilization effect of the fabric treatment equipment. Ozone gas can decompose the active ingredients in detergents, making them more effective at removing stains and thus improving cleaning results. The oxidizing effect of ozone gas helps prevent color mixing and fading in fabrics, while its disinfecting effect also helps protect fabrics and reduce damage during washing.

[0138] Example 2

[0139] like Figure 15 , 16 As shown, in this embodiment, a fabric processing device is provided, including:

[0140] Such as the foam generating device in Example 1;

[0141] Fabric treatment cylinder 8 and detergent dispensing assembly 9;

[0142] The output end 904 of the detergent dispensing component 9 is connected to the first liquid inlet section 1011 and the second liquid inlet section 1021 of the foam generating device, and the foaming chamber 103 of the foam generating device is connected to the fabric treatment cylinder 8.

[0143] In this embodiment, the fabric treatment equipment includes the foam generating device, fabric treatment cylinder 8, and detergent dispensing component 9 as described in Embodiment 1. The fabric treatment cylinder 8 includes an outer cylinder and an inner cylinder rotatably disposed within the outer cylinder. The output end 904 of the detergent dispensing component 9 is connected to the first liquid inlet section 1011 and the second liquid inlet section 1021 of the foam generating device. After the detergent is dispensed, it will be divided into two streams and enter the first liquid inlet section 1011 and the second liquid inlet section 1021 respectively. After foam is generated in the foaming chamber 103, a connecting pipe with a nozzle can be used to connect to the foaming chamber 103. The nozzle faces the inner cylinder of the fabric treatment cylinder, so that the foam is sprayed onto the clothes in the inner cylinder to participate in washing. Alternatively, the nozzle can be connected to the outer cylinder of the fabric treatment cylinder 8 to spray the foam into the washing water in the outer cylinder to participate in washing.

[0144] Since the fabric treatment equipment includes the foam generating device in Embodiment 1, the fabric treatment equipment has all the beneficial effects of the foam generating device in Embodiment 1, which will not be elaborated here.

[0145] Optionally, such as Figure 1 , 16 As shown, in one implementation of this embodiment,

[0146] The foam generating device is connected to the bottom of the top cover of the fabric processing equipment via connector 12.

[0147] In this embodiment, the foam generating device is installed on the connecting beam below the top cover of the fabric processing equipment. This makes full use of the top space of the fabric processing equipment. The foam generating device occupies the external space of the fabric processing equipment, thereby reducing the space occupied by the fabric processing equipment and improving the space utilization rate of the fabric processing equipment.

[0148] Preferably, the connector 12 can be made of screws, clips, or fixing brackets.

[0149] Optionally, such as Figure 15 As shown, in one implementation of this embodiment, the fabric processing equipment further includes:

[0150] Water inlet pipe assembly 11, which includes a first water inlet pipe 111 and a second water inlet pipe 112;

[0151] The detergent dispensing assembly 9 includes: a storage chamber 901 for storing fabric treatment agent and a mixing chamber 902 for mixing fabric treatment agent and wash water;

[0152] A second pump body 903 is provided between the storage chamber 901 and the mixing chamber 902;

[0153] Output terminal 904 is connected to mixing chamber 902;

[0154] The output end 904 of the first water inlet pipe 111 is connected to the mixing chamber 902, and the output end 904 of the second water inlet pipe 112 is connected to the fabric treatment cylinder 8.

[0155] In this embodiment, the fabric treatment equipment further includes a water inlet pipe assembly 11, which includes a first water inlet pipe 111 and a second water inlet pipe 112. Both the first water inlet pipe 111 and the second water inlet pipe 112 are provided with an output end 904 for providing washing water to the fabric treatment equipment. The detergent dispensing assembly 9 includes a storage chamber 901 and a mixing chamber 902. The storage chamber 901 is used to store fabric treatment agent, and the mixing chamber 902 is used to mix the fabric treatment agent with the washing water. A second pump 903 is installed between the storage chamber 901 and the mixing chamber 902. The second pump 903 pumps the fabric treatment agent in the storage chamber 901 into the mixing chamber 902. The flow rate of detergent pumped from the storage chamber 901 into the mixing chamber 902 can be precisely controlled by controlling the operating flow rate of the second pump 903. The output end 904 of the second pump 903 and the output end 904 of the first water inlet pipe 111 are both connected to the mixing chamber 902. The first water inlet pipe 111 injects washing water into the mixing chamber 902 and acts directly on the fabric in the fabric treatment drum through spraying. The output end 904 of the mixing chamber 902 is also connected to the fabric treatment drum 8. The washing water and detergent can enter the mixing chamber 902 simultaneously for thorough mixing, and then enter the fabric treatment drum 8 through the output end 904 of the mixing chamber 902 to participate in washing. This pre-dilutes and dissolves the detergent, allowing it to work more quickly, thereby improving the washing effect and the quality of garment care. The output end 904 of the second water inlet pipe 112 is connected to the fabric treatment cylinder 8, used to dissolve the manually added detergent and directly inject washing water into the bottom of the fabric treatment cylinder 8. Furthermore, since the detergent is pumped into the mixing chamber 902 through the second pump body 903, the pressure of the detergent entering the mixing chamber 902 increases. This allows the detergent to mix thoroughly with the washing water entering the mixing chamber 902 through the second water inlet pipe 112 to form a detergent solution, thereby improving the foaming effect of the subsequent foam generating device on the detergent solution.

[0156] Preferably, the storage compartment 901 can hold detergents or other preparations used for washing and caring for fabrics, such as fabric softeners.

[0157] Preferably, independent inlet valves can be installed on the first inlet pipe 111 and the second inlet pipe 112 respectively, so that the fabric processing equipment can independently adjust the opening and closing of the first inlet pipe 111 and the second inlet pipe 112 according to the washing needs, thereby precisely controlling the water flow of each inlet pipe to ensure that the water flow requirements of each part are met during the washing process; alternatively, only one inlet valve can be installed upstream of the first inlet pipe 111 and the second inlet pipe 112, so that the first inlet pipe 111 and the second inlet pipe 112 can be adjusted simultaneously by controlling one inlet valve, thereby saving costs and installation space.

[0158] The water inlet pipe assembly 11 is configured with at least two flow paths, which can independently provide detergent solution and washing water to the fabric treatment drum 8, so as to adjust the detergent concentration in the fabric treatment drum 8 according to different washing needs. A mixing chamber 902 is provided in the detergent dispensing assembly 9, which can pre-dilute and dissolve the detergent before it enters the fabric treatment drum 8. Through the above design, the washing efficiency of the fabric treatment equipment is further improved.

[0159] In summary, the ingenious design of the foam generating device lies in:

[0160] First, the foam generating device forms an integrated dual-channel jet generator by simultaneously setting a first liquid chamber, a second liquid chamber, and a foaming chamber within the casing. This enables the generation of more and richer fine foam, accelerating the dissolution and evaporation of detergent, improving the washing effect, and ensuring that the foam generating device maintains sufficient output flow to form a stable jet effect within the casing. The integrated dual-channel jet generator not only simultaneously distributes pressure on the foam generating device, effectively reducing jet resistance, but also reduces the inlet water pressure requirement caused by negative pressure in the jet, preventing leakage or bursting of the casing due to excessive pressure. Furthermore, the foam generating device has the advantages of compact structure, small footprint, and easy installation.

[0161] Secondly, by opening air intake ports only on the side wall of the second tapering section, the foam generating device can not only take into account the generation of foam and ensure sufficient water flow, but also perform secondary mixing of foam, increasing the total spray volume of foam-mixed liquid, thereby enabling the detergent to take effect more quickly and achieving better coverage of the fabric.

[0162] Third, by setting a partition plate inside the tube shell, the first liquid chamber and the second liquid chamber form an integrated dual-channel jet inside the tube shell, which not only reduces the volume of the foam generating device, but also increases the flow rate of the foam mixture output by the foam generating device, and reduces the risk of tube shell rupture, thereby improving the overall performance of the foam generating device.

[0163] Fourth, by using the end of the first liquid chamber as the first nozzle and setting the flow cross-section of the second nozzle to be circular, the foam generating device can ensure a large liquid flow rate while generating foam, thereby further improving the washing efficiency of clothes.

[0164] Fifth, by setting the above structure, the end of the gradually expanding section forms a semi-encirclement with the first nozzle, thereby increasing the contact area between the jet and the foam, further improving the detergent's volatilization and dissolution speed, and thus enhancing the washing effect on clothes.

[0165] Sixth, by setting up an air intake component, the air intake valve of the foam generator can be automatically opened and closed during startup or shutdown. This prevents gas from leaking out through the air intake pipe and also prevents liquid inside the foam generator from overflowing through the air intake valve, thereby enhancing the sealing performance of the foam generator while ensuring foam generation efficiency.

[0166] Seventh, by connecting the ozone generator to the foam generator, the supply of ozone gas can be precisely controlled, ensuring that the foam in the foam generator is evenly covered by ozone gas. This allows the ozone gas to directly adhere to the foam, leveraging its strong oxidizing properties to enhance the sterilization effect of the fabric treatment equipment. Ozone gas can decompose the active ingredients in detergents, making them more effective at removing stains and thus improving cleaning results. The oxidizing effect of ozone gas helps prevent color mixing and fading in fabrics, while its disinfecting effect also helps to soften fabrics and reduce damage during washing.

[0167] Eighth, the water inlet pipe assembly is configured with at least two flow paths, which can independently supply detergent solution and washing water to the fabric treatment drum, so as to adjust the detergent concentration in the fabric treatment drum according to different washing needs. A mixing chamber is set in the detergent dispensing assembly, which can pre-dilute and dissolve the detergent before it enters the fabric treatment drum. Through the above design, the washing efficiency of the fabric treatment equipment is further improved.

[0168] It can be further understood that in this disclosure, "many" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0169] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0170] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0171] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims of this application.

[0172] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A foam generating device, characterized in that, include: The tube shell (1) contains an independent first fluid cavity (101), a second fluid cavity (102), and a foaming cavity (103) that communicates with the first fluid cavity (101) and the second fluid cavity (102). The first fluid cavity (101) has a first liquid inlet section (1011) and a first tapering section (1012) connected in sequence, and the end of the first tapering section (1012) has a first nozzle (1013); The second fluid cavity (102) has a second liquid inlet section (1021), a second converging section (1022) and a expanding section (1023) connected in sequence, and the end of the second converging section (1022) has a second nozzle (1024); Wherein: the first nozzle (1013) and the end port (1025) of the gradually expanding section (1023) are both connected to the foaming chamber (103).

2. The foam generating device according to claim 1, characterized in that, An air intake (1026) is provided on the side wall of the second tapering section (1022) corresponding to the second nozzle (1024).

3. The foam generating device according to claim 2, characterized in that, A partition plate (2) is provided inside the tube shell (1). The partition plate (2) extends from one end into the tube shell (1) to partially separate the first fluid cavity (101) and the second fluid cavity (102) in the tube shell (1). The other end of the tube shell (1) and the partition plate (2) are located between the end of the tube shell (1) to form the foaming cavity (103).

4. The foam generating apparatus according to any one of claims 1-3, characterized in that, The flow surface of the first nozzle (1013) is designed to be flat; The flow surface of the second nozzle (1024) is designed to be circular; The flow surface shape of the end port (1025) of the gradually expanding section (1023) is designed to be flat; When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

5. The foam generating apparatus according to any one of claims 1-3, characterized in that, The flow surface of the first nozzle (1013) is designed to be circular; The flow surface of the second nozzle (1024) is designed to be circular; The flow surface shape of the end port (1025) of the gradually expanding section (1023) is designed to be flat. When the maximum longitudinal dimension of the flat shape is less than or equal to the diameter of the circle, the maximum transverse dimension of the flat shape is greater than the diameter of the circle.

6. The foam generating apparatus according to any one of claims 1-3, characterized in that, The flow surface of the first nozzle (1013) is designed to be circular; The flow surface of the second nozzle (1024) is designed to be circular; The flow surface shape of the end port (1025) of the expanding section (1023) is designed to be annular, and the annulus at least surrounds a portion of the first nozzle (1013).

7. The foam generating device according to claim 2, characterized in that, include: The suction assembly (3) includes a suction pipe (301) and a suction valve disposed inside the suction pipe (301). One end of the suction pipe (301) is connected to the suction port (1026), and the other end is connected to the air source. Wherein: the suction valve can open the suction pipe (301) when the negative pressure at the suction port (1026) reaches the target negative pressure, and close the suction pipe (301) when the negative pressure at the suction port (1026) does not reach the target negative pressure.

8. The foam generating device according to claim 7, characterized in that, The intake valve includes: an elastic element (302) and a sealing element (303); One end of the elastic element (302) is connected to the end of the air intake pipe (301) near the air intake port (1026), and the other end is connected to the sealing element (303). The sealing element (303) abuts against and seals the air intake port of the air intake pipe (301) away from the air intake port (1026) under the elastic force of the elastic element (302).

9. The foam generating device according to claim 8, characterized in that, The suction tube (301) includes: a first suction tube (3011) and a second suction tube (3012) that are detachably connected. One end of the first suction tube (3011) is integrally formed with the outer wall of the tube shell (1), and the other end is detachably connected to the second suction tube (3012). The end of the elastic member (302) is connected to the end of the first air intake pipe (3011) near the air intake port (1026), and the sealing member (303) abuts against and seals the air inlet port of the second air intake pipe (3012) under the elastic force of the elastic member (302).

10. The foam generating device according to claim 2, characterized in that, include: Ozone generator (4); The output end of the ozone generator (4) is connected to one end of the air pipe (5), and the other end of the air pipe (5) is connected to the air inlet (1026); The air pipe (5) is equipped with a first pump body (6) and a one-way valve (7); The one-way valve (7) is designed to allow fluid to flow out of the ozone generator (4) and restrict fluid from flowing back into the ozone generator (4).

11. A fabric treatment device, characterized in that, include: The foam generating apparatus as described in any one of claims 1-10; Fabric treatment tube (8) and detergent dispensing assembly (9); The output end (904) of the detergent dispensing component (9) is connected to the first liquid inlet section (1011) and the second liquid inlet section (1021) of the foam generating device, and the foaming chamber (103) of the foam generating device is connected to the fabric treatment cylinder (8).

12. The fabric processing equipment according to claim 11, characterized in that, include: Water inlet pipe assembly (11), the water inlet pipe assembly (11) includes a first water inlet pipe (111) and a second water inlet pipe (112); The detergent dispensing assembly (9) includes: a storage chamber (901) for storing fabric treatment agent and a mixing chamber (902) for mixing the fabric treatment agent and washing water; A second pump body (903) is provided between the storage chamber (901) and the mixing chamber (902); The output end (904) of the detergent dispensing component (9) is connected to the mixing chamber (902); The output end of the first water inlet pipe (111) is connected to the mixing chamber (902), and the output end of the second water inlet pipe (112) is connected to the fabric treatment tube (8).

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