Bubble generator and washing equipment

Abstract

This invention discloses a bubble generating device and a washing apparatus. The bubble generating device includes a dissolved air chamber, a foamer, and a bypass component. The dissolved air chamber has an air inlet, a liquid inlet, and a liquid outlet. The foamer is connected to the liquid outlet. The bypass component has a converging section, a throat, and a expanding section connected sequentially from a bypass inlet to a bypass outlet. The dissolved air chamber contains a gas storage space, and the bypass component is disposed within the dissolved air chamber. The bypass inlet connects to the liquid inlet, the bypass outlet connects to the internal space of the dissolved air chamber, and the throat connects to the gas storage space. The bubble generating device according to this embodiment of the invention can improve the bubble generation rate.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and in particular to a bubble generating device and a washing apparatus having the bubble generating device. Background Technology

[0002] A dishwasher is a machine that uses chemical, mechanical, thermal, and electrical methods to wash, rinse, and dry tableware such as bowls, plates, glassware, cutlery, and cooking utensils.

[0003] Currently, all household dishwashers use a water-spraying cleaning method. However, this type of dishwasher is difficult to clean ordinary Chinese tableware due to the spray angle, and the cleaning liquid has only a short contact time with the tableware after being sprayed, resulting in unsatisfactory cleaning effects. Therefore, water-spraying dishwashers have not yet become widespread in Chinese households. Summary of the Invention

[0004] One object of the present invention is to provide a bubble generating device that can improve the bubble generation rate.

[0005] Another object of the present invention is to provide a washing device having the bubble generating device.

[0006] According to an embodiment of the present invention, a bubble generating device includes a dissolved gas chamber, a bubbler, and a bypass component. The dissolved gas chamber has an air inlet, a liquid inlet, and a liquid outlet. The bubbler is connected to the liquid outlet. The bypass component has a tapered section, a throat, and a diffusing section connected sequentially from a bypass inlet to a bypass outlet. The dissolved gas chamber contains a gas storage space, the bypass component is disposed within the dissolved gas chamber, the bypass inlet is connected to the liquid inlet, the bypass outlet is connected to the internal space of the dissolved gas chamber, and the throat is connected to the gas storage space.

[0007] The bubble generating apparatus according to embodiments of the present invention can improve the bubble generation rate.

[0008] In addition, the bubble generating apparatus according to the above embodiments of the present invention may also have the following additional technical features:

[0009] In some embodiments, the gas storage space is located at the top of the dissolved gas chamber.

[0010] In some embodiments, the horizontal cross-sectional area of ​​the gas storage space is smaller than the horizontal cross-sectional area of ​​the space below the gas storage space.

[0011] In some embodiments, the bypass component is located in the lower part of the dissolved gas chamber, and the throat of the bypass component is connected to a connecting pipe, which connects to the throat and extends upward to the adjacent gas storage space or into the gas storage space.

[0012] In some embodiments, the dissolved gas chamber is provided with reinforcing ribs, which divide the dissolved gas chamber into multiple interconnected transverse channels. The transverse channels extend in the horizontal direction, and the multiple transverse channels are arranged sequentially in the vertical direction.

[0013] In some embodiments, the plurality of transverse channels include a first transverse channel, a second transverse channel, a third transverse channel, and a fourth transverse channel from top to bottom, wherein the first transverse channel is located within the gas storage space, the liquid inlet flows into the third transverse channel, and the liquid outlet is connected to the fourth transverse channel.

[0014] In some embodiments, the bypass outlet is opposite to the third transverse channel, and the liquid outlet direction of the bypass outlet is parallel to the extension direction of the third transverse channel.

[0015] In some embodiments, the vent is located near the first transverse channel.

[0016] In some embodiments, the distance between the second lateral channel and the third lateral channel is greater than the distance between the first lateral channel and the second lateral channel, and the distance between the second lateral channel and the third lateral channel is greater than the distance between the third lateral channel and the fourth lateral channel.

[0017] In some embodiments, the liquid outlet is located on the bottom wall of the fourth transverse channel.

[0018] In some embodiments, the reinforcing ribs divide the dissolved gas cavity into multiple longitudinal channels, which are spaced apart in the horizontal direction and extend in the vertical direction. The longitudinal channels penetrate the transverse channels in the vertical direction, and the multiple longitudinal channels and the multiple transverse channels are intersected and interconnected.

[0019] In some embodiments, the width of the reinforcing rib is in the range of 2 mm to 5 mm.

[0020] In some embodiments, the bubble generating device further includes a vent valve connected to the vent, and the vent valve is configured to allow unidirectional airflow toward the interior space of the dissolved gas chamber.

[0021] In some embodiments, the dissolved gas chamber is flat in shape.

[0022] In some embodiments, the wall thickness of the dissolved gas chamber is in the range of 2 mm to 5 mm.

[0023] In some embodiments, the dissolved gas chamber includes a first housing and a second housing, which are fastened together to form the dissolved gas chamber, and the first housing and the second housing are fixedly connected.

[0024] In some embodiments, both the first housing and the second housing have protrusions around their peripheries, and the protrusions on the first housing are connected to the protrusions on the second housing to connect the periphery of the first housing and the second housing.

[0025] In some embodiments, a fixing block is provided at the middle position of the dissolved gas chamber. The fixing block is used for fastening connection to connect the middle position of the first shell and the second shell.

[0026] In some embodiments, the inner diameter of the throat is in the range of 2 mm to 4 mm.

[0027] According to an embodiment of the present invention, a washing device includes: a body and a door, wherein the body has a washing chamber; the door is disposed on the body and is used to open and close the washing chamber; wherein at least one of the side wall, the top wall, the bottom wall and the door is provided with a bubble generating device, the bubble generating device being the bubble generating device according to the foregoing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a bubble generating device according to an embodiment of the present invention.

[0029] Figure 2 This is a cross-sectional view of the dissolved gas chamber of a bubble generating apparatus according to an embodiment of the present invention.

[0030] Figure 3 This is a cross-sectional view of the dissolved gas chamber of a bubble generating apparatus according to an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of a washing device according to an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of a bubble generating device according to another embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of a washing device according to an embodiment of the present invention.

[0034] Reference numerals: Washing equipment 1000, bubble generating device 100, dissolved air chamber 1, air inlet 101, liquid inlet 102, liquid outlet 103, bypass component 2, tapering section 21, throat 22, expanding section 23, connecting pipe 24, aerator 3, air valve 6, first transverse channel 1041, second transverse channel 1042, third transverse channel 1043, fourth transverse channel 1044, longitudinal channel 106, first housing 11, second housing 12, dissolved air chamber 105, bypass inlet 201, bypass outlet 202, reinforcing rib 13, liquid inlet valve 4, protrusion 107, fixing block 108, machine body 200. Detailed Implementation

[0035] Microbubbles possess properties such as electrostatic adsorption, detergent solubilization, and mechanical vibration generated by bubble collapse. This technology may assist in detergent dissolution, degreasing, pesticide residue removal from fruits and vegetables, and pollutant filtration, thereby improving cleaning efficiency. Microbubble generation technologies can be categorized into electrolysis, ultrasonic cavitation, throttling cavitation, and low-pressure intake. Among these, increasing pressure can increase the solubility of gases in liquids and increase the bubble concentration generated during throttling cavitation.

[0036] This invention provides an apparatus for producing microbubbles, which can be used in the washing process of a washing device 1000. The washing device 1000 in this invention can be a cleaning device including a dishwasher.

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] Combination Figures 1 to 5 According to an embodiment of the present invention, a bubble generating apparatus 100 includes a dissolved gas chamber 1 and a bubbler 3. Gas and liquid can be mixed in the dissolved gas chamber 1, and then bubbles are generated by the bubbler 3 to form a liquid with bubbles.

[0039] Specifically, the dissolved gas chamber 1 has a vent 101, a liquid inlet 102, and a liquid outlet 103. Gas can enter the dissolved gas chamber 1 through the vent 101, and liquid can enter the dissolved gas chamber 1 through the liquid inlet 102. The gas and liquid entering the dissolved gas chamber 1 can mix, thereby introducing a certain amount of gas into the liquid, completing the dissolved gas process. The bubbler 3 is connected to the liquid outlet 103. In other words, the gas-liquid mixture in the dissolved gas chamber 105 enters the bubbler 3 through the liquid outlet 103. The bubbler 3 causes the gas in the gas-liquid mixture to be dispersed to form bubbles, thereby forming a large number of tiny bubbles in the liquid.

[0040] According to the bubble generating device 100 of the present invention, since the liquid is mixed in the dissolved gas chamber 105 before entering the bubbler 3, the liquid with more dissolved gas will generate bubbles faster when passing through the bubbler 3. Moreover, when there is enough dissolved gas in the liquid, the liquid will generate more bubbles when passing through the bubbler 3, thereby achieving the purpose of improving the bubble generation rate.

[0041] It should be noted that the bubbler in this invention is used to generate bubbles in the fluid during use. Specifically, because the bubbler 5 has a throttling effect, the inlet velocity of the dissolved air chamber 3 is greater than the outlet velocity. At this time, the pressure in the dissolved air chamber 3 continuously increases (in this process, the dynamic pressure of the liquid flow is continuously converted into the static pressure of the medium in the dissolved air chamber), thereby promoting more gas to be incorporated into the liquid. When the gas solution flows to the bubbler 5, during the throttling process, the cross-sectional area of ​​the flow continuously decreases, the flow velocity increases, the pressure decreases, and the gas is continuously released in the form of cavitation, generating a large number of microbubbles.

[0042] In addition, the dissolved gas chamber 1 has a dissolved gas chamber 105, and the air inlet 101, liquid inlet 102 and liquid outlet 103 are all connected to the dissolved gas chamber 105.

[0043] As mentioned earlier, to generate more bubbles, more gas needs to be dissolved in the liquid. This can be achieved by reducing the liquid pressure, increasing the liquid flow rate, or increasing the internal pressure of the gas-dissolving chamber 105. For example, by merging the liquid inlet 102 with the gas inlet 101, the liquid immediately mixes with the gas introduced from the gas inlet 101 when it enters the gas-dissolving chamber 105 through the liquid inlet 102. This is because when the liquid first enters the gas-dissolving chamber 105, it flows from the smaller liquid inlet 102 into the larger gas-dissolving chamber 105, resulting in lower liquid pressure and a higher gas dissolution rate. Another example is increasing the fluid flow rate to improve the gas dissolution rate. For instance, according to Bernoulli's principle, a higher fluid flow rate results in lower pressure and thus a higher gas dissolution rate, effectively increasing the gas dissolution rate. Of course, other methods for improving the gas dissolution rate can also be used in this invention, such as pressurizing the gas-dissolution chamber 105. The following describes some methods used in this invention to improve the gas dissolution rate.

[0044] In some embodiments of the present invention, the bubble generating device 100 further includes a bypass member 2, which has a bypass inlet 201 and a bypass outlet 202. The bypass member 2 includes a tapering section 21, a throat 22, and a expanding section 23 connected sequentially from the bypass inlet 201 to the bypass outlet 202. In other words, between the bypass inlet 201 and the bypass outlet 202 of the bypass member 2, the tapering section 21, the throat 22, and the expanding section 23 are sequentially provided. The tapering section contracts from the bypass inlet 201 toward the throat 22, and the expanding section 23 is connected to the throat 22 and expands away from the throat 22 to the bypass outlet 202.

[0045] Optionally, a bypass 2 is disposed within the dissolved gas chamber 1, which has a gas storage space. The bypass inlet 201 can be connected to the liquid inlet 102, the bypass outlet 202 can be connected to the internal space of the dissolved gas chamber 1, and the throat 22 can be connected to the gas storage space within the dissolved gas chamber 1. Therefore, liquid can flow into the dissolved gas chamber 1 through the bypass 2. During the process of liquid flowing into the dissolved gas chamber 105 through the bypass 2, a high-speed, low-pressure zone is formed when the liquid passes through the throat 22. At this time, the gas located in the gas storage space enters the throat 22 and mixes with the high-speed, low-pressure liquid in the throat 22, thereby effectively improving the premixing of the gas and liquid entering the dissolved gas chamber 105. Furthermore, the vent 101 can be configured as a one-way inlet. As the liquid level rises upon entry, the gas pressure in the dissolved gas chamber 105 increases, thereby promoting easier entry of gas into the throat 22 for premixing with the liquid and improving the gas-liquid premixing effect.

[0046] In this invention, the gas storage space can be located at the top of the dissolved gas chamber. Since gas is more easily compressed than liquid, as the liquid level in the dissolved gas chamber rises, the gas pressure in the gas storage space gradually increases, making it easier to achieve gas-liquid premixing in the bypass component 2.

[0047] Optionally, the gas storage space in this invention can also be located at other positions within the dissolved gas chamber, such as on the side of the dissolved gas chamber. The key is to create high pressure within the gas storage space to allow gas to enter the bypass component for premixing. To maintain the gas pressure within the storage space, it can be actively filled with gas, thereby increasing the pressure. Alternatively, even if the gas storage space is not located at the top of the dissolved gas chamber, the pressure within the storage space can still be increased by raising the liquid level within a predetermined range.

[0048] In other embodiments of the present invention, the throat 22 can be connected to the vent 101, and the bypass outlet 202 can be connected to the liquid inlet 102. In this way, liquid can flow into the dissolved gas chamber 1 through the bypass 2. A portion of the gas in the liquid flowing into the dissolved gas chamber 1 from the bypass 2 will be released into the dissolved gas chamber 1, while the gas in the dissolved gas chamber 1 (including the gas already present in the dissolved gas chamber 1 and a portion of the gas released from the liquid flowing into the bypass 2) can also flow into the throat 22 through the vent 101. Specifically, during the liquid inlet process, the liquid can flow at high speed and low pressure within the throat 22, causing the gas in the dissolved gas chamber 1 to enter the bypass 2 through the vent 101 to form a gas-liquid mixture, which then enters the dissolved gas chamber 1, where the liquid undergoes further gas-liquid mixing. In the dissolved gas chamber 1, some of the gas in the liquid follows the liquid into the bubbler 3 to generate bubbles, while another part of the gas in the liquid may precipitate and enter the upper part of the dissolved gas chamber 1, and may flow back to the bypass 2. Of course, the gas entering the bypass 2 from the vent 101 can also be completely dissolved in the liquid and all of it follows the liquid into the bubbler 3 to generate bubbles.

[0049] Optionally, the inner diameter of the throat 22 is in the range of 2 mm to 4 mm. For example, the inner diameter of the throat 22 can be set to 2 mm, 2.4 mm, 3.8 mm, etc., preferably 2.4 mm. Therefore, on the one hand, this accelerates the flow and causes a low-pressure suction effect, and on the other hand, it avoids excessive pressure loss that would reduce the cavitation effect of the bubbler 3.

[0050] Of course, the inner diameter of the throat 22 can also be set to be less than 2 mm or greater than 4 mm, and the present invention does not limit this.

[0051] Optionally, combined Figures 1 to 4 The bypass component 2 is located inside the dissolved gas chamber 1. By setting the bypass component 2 inside the dissolved gas chamber 1, the structural size of the dissolved gas chamber 1 can be effectively reduced.

[0052] Optionally, combined Figures 1 to 4 The bypass component 2 is located in the lower part of the dissolved gas chamber 1. The throat of the bypass component 2 is connected to a connecting pipe 24. The connecting pipe 24 connects to the throat 22 and extends upward to the upper part of the dissolved gas chamber 1. The upper end of the connecting pipe 24 can extend to the adjacent gas storage space or extend into the gas storage space. At this time, after the premixed fluid enters the dissolved gas chamber 105, the fluid will gradually become stable. At this time, the gas that was originally premixed in the liquid may be released. When the bypass component 2 is located in the lower part of the dissolved gas chamber 1, the released gas will have more contact with the liquid during the rising process, thereby effectively improving the gas-liquid mixing effect and increasing the dissolved gas rate of the liquid in the dissolved gas chamber 105.

[0053] Optionally, the bypass component 2 and the dissolved gas chamber 1 can be integrated into one structure. That is, the bypass component 2 is integrated into the dissolved gas chamber 1. For example, the dissolved gas chamber 1 is divided into a first shell 11 and a second shell 12. The dissolved gas chamber 105 is formed by fastening the first shell 11 and the second shell 12 together. A first bypass structure is integrally integrated on the first shell 11 and a second bypass structure is integrally integrated on the second shell 12. After the first shell 11 and the second shell 12 are fastened together, the first bypass structure and the second bypass structure are combined to form the bypass component 2.

[0054] In this invention, the bypass component 2 can be a venturi tube.

[0055] As can be seen from the preceding description, increasing the gas pressure inside the dissolved gas chamber 105 can effectively improve the dissolved gas rate. Furthermore, increasing the gas pressure inside the dissolved gas chamber 105 can effectively improve the gas-liquid mixing efficiency within the bypass component 2. Specifically, the gas pressure inside the dissolved gas chamber 105 can be actively increased by venting air into it; alternatively, the vent 101 can be configured for one-way air intake, so that as liquid enters the dissolved gas chamber 1 through the liquid inlet 102, the gas pressure inside the dissolved gas chamber 105 will also increase.

[0056] Optionally, combined Figures 1 to 5 The bubble generating device 100 also includes a vent valve 6, which is connected to the vent 101 and is configured to allow unidirectional airflow toward the interior space of the dissolved gas chamber 1. In other words, gas from the external environment can enter the dissolved gas chamber 105 through the vent valve 6, and the gas inside the dissolved gas chamber 105 is difficult to expel. At this time, as liquid enters through the inlet 102, the gas pressure inside the dissolved gas chamber 105 will gradually increase, thereby effectively improving the dissolved gas rate of the liquid within the container.

[0057] Specifically, when the liquid enters the bypass component 2, it is injected into the dissolved gas chamber 105 through the bypass outlet 202. The bubbler 3 installed at the rear end of the liquid outlet 103 of the dissolved gas chamber 105 has a throttling effect, and the vent valve 6 also prevents gas from escaping from the dissolved gas chamber 105. Therefore, the gas pressure inside the dissolved gas chamber 105 increases with the rise in liquid level, and the gas in the upper part of the dissolved gas chamber 1 is compressed. Furthermore, since the throat 22 of the bypass component 2 connects to the gas storage space inside the dissolved gas chamber 105, and the liquid velocity increases and the pressure decreases as it passes through the throat 22, the combined effect of the decreased liquid pressure and increased gas pressure results in a gas pressure in the upper part of the dissolved gas chamber 105 that is greater than the liquid pressure in the throat 22. The gas enters the throat 22 to form a premixed mixture, and then is injected into the dissolved gas chamber 1 through the bypass outlet 202. In other words, the fluid injected into the dissolved gas chamber 105 through the bypass outlet 202 of the bypass component 2 is a premixed fluid.

[0058] The vent valve 6 is configured to allow unidirectional airflow into the interior space of the dissolved gas chamber 1. For example, the vent valve 6 can be configured as a one-way valve, or as a controllable valve. When airflow flows from the outside into the dissolved gas chamber 105 (where the external gas-liquid pressure is greater than the internal pressure), the vent valve 6 opens; when airflow may flow from the dissolved gas chamber 105 to the outside (where the external gas-liquid pressure is less than the internal pressure), the vent valve 6 closes. Additionally, the vent valve 6 can be opened or closed for other purposes.

[0059] After the gas-liquid mixture enters the dissolved gas chamber through the liquid inlet, the gas in the gas-liquid mixture rises continuously and enters the gas storage space in the dissolved gas chamber 105, forming a gas circulation. Due to the presence of circulating bubbles, the gas-liquid contact area is increased, and the dissolved gas efficiency is improved.

[0060] Of course, as mentioned above, a pressure pump can also be added to introduce air into the dissolved air chamber 105 to form high pressure.

[0061] Furthermore, as mentioned earlier, in order to effectively increase the gas dissolution rate of the liquid in the dissolved gas chamber 105, a relatively high gas pressure is required inside the dissolved gas chamber 105. However, the high pressure inside the dissolved gas chamber 105 will affect the structural strength and stability of the dissolved gas cavity 1. Therefore, as... Figure 2 As shown, in this invention, a reinforcing rib 13 is provided inside the dissolved gas chamber 1. The reinforcing rib 13 can improve the structural strength of the dissolved gas chamber 1.

[0062] Since the liquid inlet 102 and the air outlet 101 will introduce fluid into the dissolved gas chamber 105 and the fluid will be sent out from the liquid outlet 103, it is necessary to set up a channel for fluid flow in the dissolved gas chamber 1.

[0063] Optionally, such as Figure 2 The reinforcing rib 13 divides the dissolved gas chamber 1 into multiple transverse channels. These transverse channels extend horizontally and are arranged sequentially vertically, interconnected with each other. This improves the dissolved gas rate.

[0064] Optionally, the multiple lateral channels include a first lateral channel 1041, a second lateral channel 1042, a third lateral channel 1043, and a fourth lateral channel 1044, arranged from top to bottom.

[0065] The first transverse channel 1041 can be located within the gas storage space, where the gas in the dissolved gas chamber 105 will accumulate. As described above, with the increase in liquid level, the upper gas pressure within the dissolved gas chamber 105 will rise, and the connecting pipe 24 connected to the throat 22 will lead to the gas storage space. At this time, the gas pressure in the gas storage space will force the gas to enter the throat 22 through the connecting pipe 24, thereby completing the gas-liquid premixing.

[0066] Optionally, the liquid outlet 103 is connected to the fourth transverse channel 1044 to facilitate the discharge of liquid from the dissolved gas chamber 105.

[0067] Optionally, the liquid inlet 102 leads to the third transverse channel 1043. In this way, the liquid inlet 102 connects to a different transverse channel relative to the liquid outlet 103, thereby preventing the gas-liquid mixture entering the dissolved gas chamber through the liquid inlet 102 from directly entering the bubbler and affecting bubble generation, thus improving bubble generation efficiency.

[0068] Furthermore, in conjunction with the aforementioned embodiments, the bypass outlet is opposite to the third channel 1043. Even further, the liquid outlet direction of the bypass outlet is parallel to the extension direction of the third transverse channel, so that when the gas-liquid mixture enters the dissolved gas chamber, it can expand within the third channel 1043. When some gas is released from the liquid, the gas can come into contact with more liquid, and this also avoids affecting the bubble generation efficiency of the bubbler.

[0069] Specifically, the first transverse channel 1041, the second transverse channel 1042, the third transverse channel 1043, and the fourth transverse channel 1044 are arranged alternately from top to bottom. The purpose of the first transverse channel 1041 is to connect the gas storage space and maximize gas utilization. The purpose of the second transverse channel 1042 is to allow gas to flow into the gas storage space. The third transverse channel 1043 provides a jet path for the premixed gas. After the gas-liquid mixture ejected from the bypass outlet 202 of the bypass member 2 enters the third transverse channel 1043, some of the gas mixed in the liquid will spread horizontally, maximizing the gas-liquid contact area. In addition, the third transverse channel 1043 in this invention is higher than the fourth transverse channel 1044. This position can prevent the premixed gas in the bypass member 2 from directly entering the liquid outlet 103 (gas is compressible, and entering the bubbler 3 will suppress cavitation).

[0070] On the other hand, the third transverse channel 1043 is farther from the second transverse channel 1042. In other words, the distance between the second transverse channel 1042 and the third transverse channel 1043 is greater than the distance between the first transverse channel 1041 and the second transverse channel 1042, and the distance between the second transverse channel 1042 and the third transverse channel 1043 is greater than the distance between the third transverse channel 1043 and the fourth transverse channel 1044. This position maximizes the upward path of the premixed gas and increases the gas-liquid contact time. The purpose of the fourth transverse channel 1044 is to connect the bottom space of the dissolved gas chamber 1, allowing the drainage and gas inlet stage to empty all the liquid in the dissolved gas chamber 1.

[0071] In addition, the liquid outlet is located on the bottom wall of the fourth transverse channel, which facilitates the discharge of liquid from the dissolved air chamber.

[0072] Optionally, the reinforcing rib 13 divides the dissolved air chamber 1 into multiple longitudinal channels 106. The longitudinal channels 106 extend in the vertical direction, and the multiple longitudinal channels 106 are spaced apart in the horizontal direction. The longitudinal channels 106 penetrate the transverse channels in the vertical direction, and the multiple longitudinal channels 106 and the multiple transverse channels are intersected and interconnected.

[0073] See attached document Figure 3 In this invention, the longitudinal channel 106 is a circular hole shape.

[0074] Optionally, the width W1 of the reinforcing rib 13 is in the range of 2 mm to 5 mm. For example, the width W1 of the reinforcing rib 13 can be set to 2 mm, 3 mm, 4.1 mm, etc., thereby effectively improving the structural strength of the dissolved air cavity 1. Of course, the width W1 of the reinforcing rib 13 can also be set to less than 2 mm or greater than 5 mm.

[0075] Optionally, the horizontal cross-sectional area of ​​the gas storage space is smaller than the horizontal cross-sectional area of ​​the space below the gas storage space. This facilitates the convergence of airflow and allows the airflow to enter the throat 22 under pressure to complete gas-liquid premixing, thereby improving gas-liquid mixing efficiency.

[0076] Referring to the attached drawings, the horizontal section refers to the section perpendicular to the vertical direction.

[0077] Optionally, the dissolved air chamber 1 is flat. This allows the bubble generator 100 to be placed on the side wall, door, or top wall of the washing equipment 1000, effectively reducing the space occupied by the bubble generator 100 and improving space utilization.

[0078] Furthermore, the wall thickness W2 of the dissolved gas chamber 1 in this invention can be in the range of 2 mm to 5 mm. For example, setting the wall thickness W2 of the dissolved gas chamber to 2 mm, 3 mm, 4.1 mm, etc., can effectively improve the stability and safety of the dissolved gas chamber 1, while meeting the requirements for pressure bearing and welding.

[0079] Of course, the wall thickness W2 can also be set to less than 2 mm or greater than 5 mm.

[0080] Optionally, combined Figures 1 to 4 The dissolved gas chamber 1 includes a first shell 11 and a second shell 12, which are fastened together to form a dissolved gas chamber 105. The middle and peripheral positions of the first shell 11 and the second shell 12 are fixedly connected. This simplifies the structure of the dissolved gas chamber 1 and improves its dissolved gas effect.

[0081] Optionally, both the first housing 11 and the second housing 12 are provided with protrusions 107 around their peripheries. The protrusions 107 on the first housing 11 are correspondingly connected to the protrusions 107 on the second housing 12 to connect the peripheries of the first housing 11 and the second housing 12. This effectively facilitates the assembly of the first housing 11 and the second housing 12, improves the structural strength of the dissolved gas chamber 1, avoids affecting the wall thickness of the dissolved gas chamber 1 due to the setting of fasteners, and improves the structural strength and stability of the dissolved gas chamber 1.

[0082] The first and second housings can be connected by bolts, screws, or riveting. This requires mounting holes on both housings. The mounting holes on the first housing can be located on or near a protrusion, and the mounting holes on the second housing can also be located on or near a protrusion. This effectively ensures the structural strength of the first and second housings, as well as the connection strength between them.

[0083] Of course, the first housing 11 and the second housing 12 can also be connected by welding or other methods. In this case, setting a protrusion can also improve the connection strength between the first housing 11 and the second housing 12.

[0084] Optionally, a fixing block 108 is provided at the middle position within the dissolved gas chamber, or in other words, a fixing block 108 is provided at the middle position within the dissolved gas chamber 105. The fixing block 108 is used for fastening connection to connect the middle position of the first housing 11 and the second housing 12. By providing the fixing block 108, the middle part of the first housing 11 and the middle part of the second housing 12 can be connected together, thereby effectively improving the stability and structural strength of the dissolved gas chamber 1.

[0085] Alternatively, the aforementioned bypass member 2 can be formed on the first housing 11, and the dissolved gas chamber 105 is formed by the cooperation of the first housing 11 and the second housing 12. Optionally, the periphery of the first housing 11 is provided with a convex ring, and the periphery of the second housing 12 is provided with a concave ring. The convex ring can be embedded in the concave ring, and a sealing ring can be provided in the concave ring. The convex ring is embedded in the concave ring and pressed on the sealing ring to form a sealing structure.

[0086] In addition, the present invention also provides other solutions for improving dissolved gas ratio, such as... Figure 5 The liquid inlet 102 is located at the upper part of the dissolved gas chamber 1 and is configured to allow liquid to flow downwards. The liquid outlet 103 is located at the lower part of the dissolved gas chamber 1 and is positioned away from the liquid inlet 102. When the liquid enters the dissolved gas chamber 1 through the liquid inlet 102, it will flow towards the liquid surface position in the dissolved gas chamber 1, thereby carrying more gas into the liquid in the dissolved gas chamber 105, which can improve the container efficiency and bubble generation efficiency.

[0087] The position in which the liquid inlet 102 in the lower part of the dissolved gas chamber 1 points in the direction of liquid inlet 102 refers to the position in the lower part of the dissolved gas chamber 1 directly opposite the liquid inlet 102 in the direction of liquid inlet 102. For example, when the liquid inlet 102 is downward, the position in which the liquid inlet 102 in the lower part of the dissolved gas chamber 1 points in the direction of liquid inlet 102 is the position in which the lower part of the dissolved gas chamber 1 is directly opposite the liquid inlet 102 vertically.

[0088] Alternatively, the vent 101 can be located at the upper part of the dissolved air chamber 1, and the air inlet direction of the vent 101 can be set to be suitable for the convergence of air inlet and liquid inlet.

[0089] The difference between this scheme and the aforementioned scheme with an added bypass component 2 is that the liquid inlet 102 and the vent 101 are located at the upper part of the dissolved gas chamber 1, and the liquid entering through the liquid inlet 102 and the gas entering through the vent 101 converge, allowing the liquid to carry the gas through the flow. Optionally, the liquid inlet 102 of the dissolved gas chamber 1 is located at the upper part of the dissolved gas chamber 1 and faces downwards to allow liquid to enter at high speed, flushing water onto the liquid surface and carrying gas into the liquid surface to generate bubbles, increasing the gas-liquid contact area and increasing the dissolved gas efficiency. At the same time, the liquid outlet 103 is located in a position far below the liquid inlet 102 to prevent gas from directly entering the bubbler 3 and suppress the generation of microbubbles.

[0090] In conjunction with the foregoing embodiments, the liquid outlet 103 is located at the lower part of the dissolved gas chamber 1. Furthermore, the vent 101 and the liquid inlet 102 are located on one side of the upper part of the dissolved gas chamber 1 in a horizontal direction, while the liquid outlet 103 is located on the other side of the lower part of the dissolved gas chamber 1 in a horizontal direction. Even further, multiple reinforcing ribs 13 can be spaced apart in the aforementioned horizontal direction, and the reinforcing ribs 13 are configured to extend in the vertical direction.

[0091] It should be noted that the up and down direction mentioned in this invention refers to the up and down direction in the accompanying drawings, and the horizontal direction refers to the left and right direction in the accompanying drawings. Of course, the specific description of the direction here is only a description based on the orientation shown in the accompanying drawings and is not a limitation on the scope of protection of this invention. Based on different placement of the bubble generating device, the up and down direction, horizontal direction, etc. in this invention will change accordingly.

[0092] In conjunction with the foregoing embodiments, the present invention fills the gas-dissolving chamber 1 with gas during the gas-dissolving stage. The inlet valve 4 is opened, and due to the throttling effect of the bubbler 3, the inlet velocity of the gas-dissolving chamber 1 is greater than the outlet velocity. At this time, the pressure in the gas-dissolving chamber 1 continuously increases (during this process, the dynamic pressure of the liquid flow is continuously converted into the static pressure of the medium inside the gas-dissolving chamber 1). Because the pressure inside the gas-dissolving chamber 1 rises and the vent valve 6 is closed, the gas cannot leak out through the vent valve 6 (the flow direction is from the outside to the gas-dissolving chamber 1). Due to the increased pressure, the gas inside the gas-dissolving chamber 1 continuously dissolves in the liquid (the higher the pressure, the higher the solubility of the gas). When the gas-liquid mixture flows to the bubbler 3, during the throttling process, the cross-sectional area continuously decreases, the flow velocity increases, the pressure decreases, and the gas continuously precipitates out through cavitation, generating a large number of microbubbles. The liquid containing microbubbles re-enters the washing system after being pumped.

[0093] To improve dissolved gas efficiency, the gas-liquid contact area needs to be increased. A bypass component 2 is installed at the liquid inlet of the dissolved gas chamber 1. The cross-sectional area of ​​the neck (throat 22) of the bypass component 2 continuously decreases, the flow velocity increases, and the pressure decreases. High-pressure gas from the top of the dissolved gas chamber 1 is drawn into the bypass component 2, achieving pre-mixing of gas and liquid and increasing the gas-liquid contact area.

[0094] As the gas in dissolved gas chamber 1 continuously dissolves into the liquid, the gas content within dissolved gas chamber 1 decreases. Therefore, after a period of time, drainage is necessary. During drainage, the inlet valve 4 is closed. As the liquid in dissolved gas chamber 105 flows out with the bubbler 3, the pressure inside dissolved gas chamber 1 decreases, at which point the vent valve 6 automatically opens. The vent valve 6 is located at the top of dissolved gas chamber 1, and under the influence of gravity, the liquid in dissolved gas chamber 1 flows back into the inner liner through the bubbler 3. Gas enters through the vent valve 6, refilling dissolved gas chamber 1.

[0095] The gaseous medium is not limited to air; it can also be other gaseous media, such as gaseous air fresheners. Similarly, the liquid medium is not limited to water; it can also be cleaning agents, etc.

[0096] The dissolved air chamber 1 has a liquid inlet 102, a vent 101, and a liquid outlet 103. The vent 101 is located at the top of the dissolved air chamber 1, where, during drainage, when the vent valve 6 is opened, the liquid in the dissolved air chamber 1 flows out. The liquid outlet 103 is located at the bottom of the dissolved air chamber 1, facilitating the drainage of water from the dissolved air chamber 1 by gravity, allowing it to be refilled with air. The liquid inlet 102 is located in the lower middle part of the dissolved air chamber 1 (i.e., the third transverse channel 1043). On one hand, since the gas rises, this position prevents the premixed gas in the bypass 2 from directly entering the liquid outlet 103 (gas is compressible, and entering the bubbler 3 would inhibit cavitation). On the other hand, this position maximizes the rising path of the premixed gas, increasing the gas-liquid contact time. The dissolved air chamber 1 has an L-shaped design, with a gas storage space in the upper left part, where the vent 101 of the bypass 2 is located. During the gas dissolution process, the pressure inside the chamber is high, and the gas is compressed and accumulates in the upper part of the gas dissolution chamber 1. Setting up a gas storage space with a small horizontal cross-sectional area can maximize the utilization rate of the gas.

[0097] The dissolved gas chamber 1 has multiple transverse channels. The first transverse channel 1041 is designed to connect the gas storage space, maximizing gas utilization. The second transverse channel 1042 is designed to allow gas to flow into the gas storage space. The third transverse channel 1043 provides a jet path for the premixed gas, allowing bubbles ejected from the premixed outlet of the bypass 2 to expand horizontally, maximizing the gas-liquid contact area. Because the gas rises, the third transverse channel 1043 is higher than the fourth transverse channel 1044. This position prevents the premixed gas in the bypass 2 from directly entering the liquid outlet 103 (gas is compressible, and entering the bubbler 3 would suppress cavitation). On the other hand, the third transverse channel 1043 is farther from the second transverse channel 1042 (for example, the distance between the third transverse channel 1043 and the second transverse channel 1042 is greater than the other distances between the multiple transverse channels). This position maximizes the rising path of the premixed gas, increasing the gas-liquid contact time. The purpose of the fourth transverse channel 1044 is to connect the bottom space of the dissolved gas chamber 1, and the drainage and air intake links can empty all the liquid in the dissolved gas chamber 1.

[0098] The dissolved gas chamber 1 is a pressure vessel. In this example, it is made of plastic (other materials can also be used). Therefore, to increase structural strength, a pipe layout design is adopted, such as vertical channels, with a near-circular cross-section to optimize pressure resistance. The reinforcing structure of the dissolved gas chamber 1 (multiple parallel and spaced vertical reinforcing ribs) can be welded to prevent high-pressure bursting. Additionally, reinforcing screw holes are provided in the middle of the dissolved gas chamber 1, connected by bolts to prevent deformation of the middle section due to pressure. In this example, the reinforcing rib 13 and wall thickness are set to 3mm to meet pressure resistance and welding requirements. The bypass component 2 can be integrally molded into the dissolved gas chamber 1 (injection molding). During processing, the dissolved gas chamber 1 is divided into upper and lower parts, which can be sealed by welding or by a sealing ring + screws. In this example, the sealing ring is positioned as shown.

[0099] In this example, the throat 22 of bypass component 2 is set to 2.4mm. This is done to accelerate flow and induce a low-pressure suction effect, while also preventing excessive pressure loss that could reduce the cavitation effect of bubbler 3. To simplify mold design, the vertical section of bypass component 2 is designed as a two-section connection, linked by a sealing ring.

[0100] Combination Figure 1 In a specific embodiment of the present invention, the bubble generating device 100 includes a dissolved gas chamber 1, a bypass component 2, a bubbler 3, a vent valve 6, and a liquid inlet valve 4. The dissolved gas chamber 1 is provided with a liquid inlet 102, a vent 101, and a liquid outlet 103. The top of the dissolved gas chamber 1 has a gas storage space. The liquid inlet valve 4 is connected to the liquid inlet 102, the vent valve 6 is connected to the vent 101, the bubbler 3 is connected to the liquid outlet 103, and the bypass component 2 is provided in the dissolved gas chamber 1. The bypass component 2 includes a converging section 21, a throat 22, and a expanding section 23. The converging section 21 is connected to the liquid inlet 102, the throat 22 is connected to the gas storage space, and the converging section 23 introduces liquid into the dissolved gas chamber 1.

[0101] Combination Figure 2The dissolved gas chamber 1 is provided with multiple reinforcing ribs 13, which divide the dissolved gas chamber 1 into multiple transverse channels and multiple longitudinal channels. The transverse channels extend horizontally and are arranged sequentially in the vertical direction. The multiple transverse channels include a first transverse channel 1041, a second transverse channel 1042, a third transverse channel 1043, and a fourth transverse channel 1044 from top to bottom. The longitudinal channels 106 extend vertically and are spaced horizontally. The longitudinal channels 106 penetrate the transverse channels in the vertical direction. The multiple longitudinal channels 106 and the multiple transverse channels are interwoven and interconnected. The first transverse channel 1041 is located in the gas storage space. The liquid outlet 103 is connected to the fourth transverse channel 1044. The bypass outlet is opposite to the third channel 1043. The throat of the bypass component is connected to a connecting pipe. One end of the connecting pipe is connected to the throat, and the other end extends along a longitudinal channel to an adjacent gas storage space or into the gas storage space.

[0102] The principle behind increasing the gas-liquid contact area in the dissolved gas chamber 1 of this invention is as follows: Liquid enters through the liquid inlet, is accelerated at the throat 22 of the bypass 2, and is injected into the dissolved gas chamber 1 through the gas-liquid premixing outlet. Due to the throttling effect of the bubbler 3 installed at the rear end of the liquid outlet 103, the pressure inside the dissolved gas chamber 1 increases, and the liquid level continuously rises. The gas in the upper part of the dissolved gas chamber 1 is compressed. Since the gas pressure in the gas storage space is greater than the liquid pressure at the throat 22, the gas is drawn into the throat 22 of the tuyeres, forming a premix, and then injected into the dissolved gas chamber 1 through the gas-liquid premixing outlet. The bubble cluster expands in the third transverse channel 1043, and then the gas continuously rises, entering the gas storage space through the second transverse channel 1042, forming a gas circulation. Due to the presence of circulating bubbles, the gas-liquid contact area is increased, and the dissolved gas efficiency is improved.

[0103] The bubble generator 100 of this invention can be installed in a dishwasher and belongs to the category of microbubble generators 100 with a water tank (dissolved air chamber 1). The bubble generator is relatively thin, allowing it to be installed in narrow spaces, such as inside the outer panel of the dishwasher. A bypass component 2 is provided for gas-liquid premixing, increasing the gas-liquid contact area. This invention can achieve pump-free microbubble washing using tap water pressure, generating micro-nano bubbles using the pressurized dissolved air + throttling cavitation microbubble generator 100. Pressurized dissolved air is achieved through the dissolved air chamber 1, increasing the concentration of microbubbles generated by throttling cavitation and resulting in smaller bubble particle sizes. Gas premixing is achieved through the bypass component 2. A passive air intake structure is implemented using gravity and a vent valve 6. A gas storage structure is used to increase the gas utilization rate within the dissolved air chamber 1. The reinforced structure of the dissolved air chamber 1 (multiple parallel and spaced vertical reinforcing ribs) prevents high-pressure bursting. Furthermore, in one embodiment of this invention, direct-flow water intake carries gas into the liquid surface, increasing the gas-liquid contact area. The vent valve 6 in this invention can be replaced with other types of valves, such as solenoid valves, to achieve venting and unidirectional air intake through other control methods. An air pump can be added upstream of the vent valve 6 to achieve an active air intake structure. Combined with the liquid level sensor in the dissolved gas chamber 1, continuous operation can be achieved. In the drainage and air intake stage, the air pump can also be used to accelerate drainage. This invention uses a microbubble generator 100 with pressurized dissolved gas and throttling cavitation to generate micro-nano bubbles. Pressurized dissolved gas is achieved through the dissolved gas chamber 1, increasing the concentration of microbubbles generated by throttling cavitation, and resulting in smaller bubble particle sizes.

[0104] Combination Figures 1 to 6 The present invention also provides a washing device 1000, which can be a cleaning device such as a dishwasher.

[0105] According to an embodiment of the present invention, a washing device 1000 includes a body 200 and a door. The body 200 has a washing chamber inside. The door is disposed on the body 200 and is used to open and close the washing chamber. A bubble generating device 100 is provided on at least one of the side wall, top wall, bottom wall and door of the body 200. The bubble generating device 100 is the bubble generating device 100 according to the aforementioned.

[0106] According to an embodiment of the present invention, the washing device 1000, due to the provision of the aforementioned bubble generating device 100, generates microbubbles when liquid enters the bubble generating device 100, and then the microbubbles participate in the washing process, thereby improving the washing effect. The bubble generating device 100 of the present invention can be installed on the wall or door of the washing device 1000, which can effectively simplify the structure and improve space utilization.

[0107] Optional, such as Figure 6As shown, the body 200 includes an inner liner 210 and side plates 220. Side plates 220 are provided on both opposite sides of the inner liner 210, and a bubble generating device can be disposed between the side plates 220 and the inner liner 210. One or more bubble generating devices can be disposed on the body 200.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0109] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bubble generating device, characterized in that, include: A gas-dissolving chamber, which has an air inlet, a liquid inlet, and a liquid outlet; Aerator, the aerator being connected to the liquid outlet; A bypass component having a tapered section, a throat, and a dilating section connected sequentially from a bypass inlet to a bypass outlet; The gas dissolving chamber is provided with a gas storage space, the bypass component is provided in the gas dissolving chamber, the bypass inlet is connected to the liquid inlet, the bypass outlet is connected to the internal space of the gas dissolving chamber, and the throat is connected to the gas storage space. The dissolved gas chamber is provided with reinforcing ribs, which divide the dissolved gas chamber into multiple interconnected transverse channels. The transverse channels extend horizontally, and the multiple transverse channels are arranged sequentially in the vertical direction. The plurality of transverse channels include a first transverse channel, a second transverse channel, a third transverse channel and a fourth transverse channel from top to bottom, wherein the first transverse channel is located within the gas storage space, the liquid inlet is directed to the third transverse channel, and the liquid outlet is connected to the fourth transverse channel; The bypass outlet is opposite to the third transverse channel, and the liquid outlet direction of the bypass outlet is parallel to the extension direction of the third transverse channel. The distance between the second transverse channel and the third transverse channel is greater than the distance between the first transverse channel and the second transverse channel, and the distance between the second transverse channel and the third transverse channel is greater than the distance between the third transverse channel and the fourth transverse channel.

2. The bubble generating device according to claim 1, characterized in that, The gas storage space is located at the top of the dissolved gas chamber.

3. The bubble generating device according to claim 1, characterized in that, The horizontal cross-sectional area of ​​the gas storage space is smaller than the horizontal cross-sectional area of ​​the space below the gas storage space.

4. The bubble generating device according to claim 1, characterized in that, The bypass component is located in the lower part of the dissolved gas chamber. The throat of the bypass component is connected to a connecting pipe. The connecting pipe connects to the throat and extends upward to the adjacent gas storage space or into the gas storage space.

5. The bubble generating device according to claim 1, characterized in that, The vent is located near the first transverse channel; and / or The liquid outlet is located on the bottom wall of the fourth transverse channel.

6. The bubble generating device according to claim 1, characterized in that, The reinforcing ribs divide the dissolved air cavity into multiple longitudinal channels. The multiple longitudinal channels are spaced apart in the horizontal direction and extend in the vertical direction. The longitudinal channels penetrate the transverse channels in the vertical direction, and the multiple longitudinal channels and multiple transverse channels are intersected and interconnected.

7. The bubble generating device according to claim 1, characterized in that, The width of the reinforcing rib is in the range of 2 mm to 5 mm.

8. The bubble generating apparatus according to any one of claims 1-4, characterized in that, The bubble generating device further includes: A vent valve is connected to the vent, and the vent valve is configured to allow unidirectional airflow toward the interior space of the dissolved gas chamber.

9. The bubble generating apparatus according to any one of claims 1-4, characterized in that, The dissolved air chamber is flat in shape; and / or The wall thickness of the dissolved gas chamber is in the range of 2 mm to 5 mm.

10. The bubble generating apparatus according to any one of claims 1-4, characterized in that, The dissolved gas chamber includes a first shell and a second shell, which are fastened together and fixedly connected.

11. The bubble generating apparatus according to claim 10, characterized in that, Both the first housing and the second housing have protrusions around their peripheries. The protrusions on the first housing correspond to the protrusions on the second housing, thereby connecting the peripheral positions of the first housing and the second housing; and / or A fixing block is provided in the middle position of the dissolved gas chamber. The fixing block is used for fastening connection to connect the middle position of the first shell and the second shell.

12. A washing device, characterized in that, include: The machine body has a washing chamber inside; A door, which is mounted on the machine body, is used to open and close the washing chamber; Wherein, at least one of the side wall, top wall, bottom wall and door of the machine body is provided with a bubble generating device, and the bubble generating device is the bubble generating device according to any one of claims 1-11.

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