CN111659274A

CN111659274A - Microbubble generator and washing device

Info

Publication number: CN111659274A
Application number: CN201910169110.3A
Authority: CN
Inventors: 陈林; 耿靖华; 宁昊; 王宇宇; 赵全
Original assignee: Wuxi Little Swan Electric Co Ltd
Current assignee: Wuxi Little Swan Electric Co Ltd
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-09-15

Abstract

The invention discloses a micro-bubble generator and a washing device. The microbubble generator includes: the dissolved air tank is internally provided with a dissolved air cavity and is provided with an inlet and an outlet, and the inlet is positioned above the outlet; the baffle is arranged in the gas dissolving tank, at least one part of the gas dissolving cavity is divided into a bubble dissolving area communicated with the inlet and a water flow discharging area communicated with the outlet by the baffle, and water flow in the bubble dissolving area bypasses the baffle and enters the water flow discharging area; the cavitation piece is arranged outside the gas dissolving tank and connected with the outlet, or the cavitation piece is arranged at the outlet. The microbubble generator can utilize the height difference between the inlet and the outlet to form water seal at the outlet under the condition that the flow speed difference exists between the water flowing in and out of the dissolved air cavity, so that the dissolved air cavity is gradually pressurized to form a high-pressure cavity, the dissolved air quantity can be improved, and then the high-air-concentration water is made into high-content microbubble water by utilizing the cavitation piece. The baffle plate is arranged, so that the flow path of water flow can be prolonged as far as possible by dividing the two spaces, and the air dissolving is facilitated.

Description

Microbubble generator and washing device

Technical Field

The invention relates to the field of washing treatment, in particular to a microbubble generator and a washing device.

Background

At present, the microbubble technology is mainly applied in the field of environmental protection, and has application cases in the fields of skin care, shower, clothes washing devices and the like in the aspect of household. Most the structure of the microbubble generator who is applied to above-mentioned field at present is complicated, and some needs additionally increase the water pump, and some need a plurality of valve control also have more restrictions to income water mode etc. simultaneously, lead to the cost higher. Wherein the arrangement of the cavitation piece of the micro-bubble generator not only occupies large volume, but also has unreasonable structure and inconvenient installation and manufacture.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the micro-bubble generator which is simple in structure, good in bubble making effect and convenient to install.

The invention also aims to provide a washing device with the microbubble generator.

The microbubble generator according to an embodiment of the present invention includes: a dissolved air tank defining a dissolved air cavity therein, the dissolved air tank having an inlet and an outlet for water flow, the inlet being located above the outlet; the baffle is arranged in the gas dissolving tank, at least one part of the gas dissolving cavity is divided into a bubble dissolving area communicated with the inlet and a water flow discharging area communicated with the outlet by the baffle, and water flow in the bubble dissolving area bypasses the baffle and enters the water flow discharging area; the cavitation piece is arranged outside the gas dissolving tank and connected with the outlet, or the cavitation piece is arranged at the outlet.

According to the microbubble generator provided by the embodiment of the invention, under the condition that the flow speed difference exists between the water flow entering and exiting the dissolved air cavity, the water seal is formed at the outlet by utilizing the height difference between the inlet and the outlet, so that the dissolved air cavity is gradually pressurized to form the high-pressure cavity, the dissolved air quantity can be improved, and then the high-air-concentration water is prepared into high-content microbubble water by utilizing the cavitation piece. The baffle divides the dissolved air cavity into a bubble dissolving area and a water flow discharging area, the bubble dissolving area and the water flow discharging area have certain space size, enough space is provided for water to excite water splash, the water flow resistance of water outlet is not too large, and the division of the two spaces can prolong the water flow path as far as possible, thereby being beneficial to the dissolution of air.

In some embodiments, the dissolved air tank comprises a liquid adding box body, and a first cover body and a second cover body which are respectively arranged at two ends of the liquid adding box body, and the first cover body and the second cover body are respectively connected and matched with the liquid adding box body to seal the dissolved air cavity.

Specifically, the baffle is arranged on the first cover body, and at least part of the baffle is positioned between the inlet and the outlet in the horizontal direction.

Optionally, the dissolved air tank is in a long strip shape, and the inlet, the outlet and the baffle are all arranged at the same end of the dissolved air tank in the length direction.

Specifically, the inlet, the outlet and the baffle are all arranged on the first cover body.

Advantageously, the dissolved air tank is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the inlet, the water outlet pipe is connected with the outlet, and the water inlet pipe and the water outlet pipe are both arranged along the length direction of the dissolved air tank.

In some embodiments, an inner extension pipe is arranged on the dissolved air tank, the inner extension pipe is connected with the inlet and is located in the dissolved air cavity, and an inner spout is arranged at the free end of the inner extension pipe.

In some embodiments, the extension direction of the inner pipe is perpendicular to the axis of the inner spout.

In some embodiments, the baffle is provided with a flow dividing rib towards the water flow discharge area.

Specifically, sealing rings are arranged between the first cover body and the liquid adding box body and between the second cover body and the liquid adding box body.

Furthermore, the first cover body and the second cover body are respectively provided with a sealing groove for positioning the sealing ring.

The washing apparatus according to an embodiment of the present invention includes the microbubble generator according to the above-described embodiment of the present invention.

According to the washing device provided by the embodiment of the invention, the micro-bubble generator is not easy to have a simple structure, is easy to foam, and is convenient to assemble and seal.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of the structure of a dissolved air tank according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a microbubble generator according to an embodiment of the present invention.

Fig. 3 is a side view of the refill cartridge of an embodiment of the present invention.

Fig. 4 is a schematic view of a first cover and components thereon in one orientation, in accordance with one embodiment of the present invention.

Fig. 5 is a schematic view of the first cover and components thereon of the embodiment of fig. 4 in another orientation.

Fig. 6 is a schematic view of a second cover and components thereon in one orientation, in accordance with one embodiment of the present invention.

Fig. 7 is a cross-sectional view of the embodiment shown in fig. 6.

Reference numerals:

a micro-bubble generator 100,

A dissolved air tank 1, a dissolved air cavity 10, a liquid adding box body 11, a first cover body 12, a second cover body 13, an inlet 14, an outlet 15, an air supplementing opening 16, an outer reinforcing rib 17, an inner reinforcing rib 18, a sealing groove 19, a positioning column 101, a positioning hole 102, an embedded groove 103, a groove for accommodating a liquid, a gas and a gas,

A water inlet pipe 21, a water outlet pipe 22, an inner extension pipe 23, an air supplement pipe 24, an inner nozzle 25,

A baffle 3, a flow dividing rib 31,

A cavitation member 4, a Venturi channel 41,

The check valve 5, the valve core 50, the valve cover 501, the valve column 502, the first valve body 51, the second valve body 52, the third valve body 53, the middle port 54, the inner port 55, the first movable chamber 56, the second movable chamber 57, the elastic member 58, the first valve body and the second valve body,

A sealing ring 6, a sealing gasket 61,

And a fastener 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The microbubble generator 100 according to an embodiment of the present invention is described below with reference to the drawings.

The microbubble generator 100 according to the embodiment of the present invention, as shown in fig. 1 and 2, includes: a dissolved air tank 1 and a cavitation member 4. A dissolved air chamber 10 is defined within the dissolved air tank 1, the dissolved air tank 1 having an inlet 14 and an outlet 15 for the flow of incoming and outgoing water. The cavitation part 4 is arranged outside the dissolved air tank 1 and is connected with the outlet 15, or the cavitation part 4 is arranged at the outlet 15, and the cavitation part 4 makes the gas dissolved in the water into bubbles through cavitation effect.

When the air pressure inside the dissolved air tank 1 is smaller than the water inlet pressure, the water inlet flow rate of the micro-bubble generator 100 is larger than the water outlet flow rate, and when the air pressure inside the dissolved air tank 1 gradually rises to be close to the water inlet pressure, the water outlet flow rate is equal to the water inlet flow rate. The water flow is injected into the dissolved air tank 1 through the inlet 14, and the water level in the dissolved air chamber 10 gradually rises after the water flow is injected into the dissolved air tank 1 for a certain period of time. The inlet 14 of the gas dissolving tank 1 is positioned above the outlet 15, so that the water level of the gas dissolving chamber 10 can quickly rise and then sink over the outlet 15, and a water seal is formed at the outlet 15. After 15 departments of export form the water seal, export 15 departments still through cavitation 4 drainage, entry 14 departments still intakes constantly, consequently the water level is still constantly rising in the air dissolving chamber 10, leads to the surface of water top air space to reduce gradually, thereby air dissolving chamber 10 steps up gradually and forms the high-pressure chamber, after air dissolving chamber 10 upper portion cavity forms the high-pressure chamber, the solubility of air under high pressure state is greater than the solubility under the low pressure state, consequently the solubility of air in water in air dissolving chamber 10 can greatly increased. A large amount of air is dissolved in the water flowing to the cavitation part 4, and the cavitation part 4 can produce a large amount of micro bubbles through the cavitation effect and can be used for washing and other purposes.

The scheme of the embodiment of the invention is to dissolve air as a solute in water, namely the air is dispersed in water molecules in an ion form. The dissolved state disperses air ions, and the air ions in water molecules are more uniform. The bubbles separated out by the cavitation effect are mostly only in the sizes of nanometer and micron at the initial stage of formation. Even after the water with the microbubbles flows to the final washing place, the microbubbles are mutually dissolved, and most of the microbubbles obtained can still be kept in a millimeter level or even smaller. The explosion energy of the micro-bubbles of the level can be effectively transmitted to stains among fibers with millimeter and micron sizes and also to detergent particles, so that the micro-bubble water has strong dirt-removing capacity when used for washing, has high dissolving speed and little detergent residue when used for dissolving the detergent, and the air dissolved in the water is generally not sufficiently separated out in the cavitation part 4, and the air dissolved in the water can slowly supplement the micro-bubbles in the using process.

The upper inlet 14 of the dissolved air tank 1 is positioned above the outlet 15, so that the outlet 15 is sealed by the liquid level, and water rushes to the water surface from the upper part when the inlet 14 enters water, so that the water surface is agitated, and meanwhile, part of high-pressure air is brought in, and the dynamic contact area between the air and the water can be increased.

According to the microbubble generator 100 of the embodiment of the invention, a water seal is formed at the outlet 15 by utilizing the flow speed difference of the water flow entering and exiting the gas dissolving cavity 10 and the height difference of the inlet 14 and the outlet 15, so that the gas dissolving cavity 10 is gradually boosted to form a high-pressure cavity, the gas dissolving quantity can be increased, and then the high-concentration water is made into high-content microbubble water by utilizing the cavitation part 4. The microbubble generator 100 has a simple structure, a good gas dissolving effect, and a low cost.

In some embodiments, the gas dissolving tank 1 is processed separately and then assembled into a whole, so that the gas dissolving tank is easy to form and low in defective rate.

Specifically, as shown in fig. 1 to 3, the dissolved air tank 1 includes a liquid adding box body 11 and a first cover body 12, an opening is provided at one end of the liquid adding box body 11, and the first cover body 12 is connected and matched with the liquid adding box body 11 to close the opening. The first cover 12 has an inlet 14 and an outlet 15 for the incoming and outgoing water streams, and the inlet 14 is located above the outlet 15. So set up, microbubble generator 100 water-feeding pipe connects and dissolves the same one end of gas pitcher 1, and it is very convenient to take over.

The dissolved air tank 1 comprises a second cover body 13, the other end of the liquid adding box body 11 is also provided with an opening, and the second cover body 13 is connected and matched with the liquid adding box body 11 to seal the opening. The second cover 13 is provided with an air supply port 16, and the air supply port 16 is used for supplying air when the space in the air dissolving cavity 10 is insufficient. When the air supply is needed by the air dissolving tank 1, an air pump can be connected to the air supply opening 16, and high-pressure air is pumped into the air dissolving chamber 10 through the air supply opening 16.

The opposite ends of the dissolved gas tank 1 are open, the first cover body 12 and the second cover body 13 are matched at the opposite ends of the dissolved gas tank 1, so that a connecting pipe at one end of the dissolved gas tank 1 is used for connecting drainage, a connecting pipe at the other end of the dissolved gas tank 1 is used for connecting gas, a water-gas pipeline is separated, and sealing and insulating treatment are conveniently carried out.

In some embodiments, as shown in fig. 2 and 5, the microbubble generator 100 further includes a sealing ring 6, and the sealing ring 6 is used for sealing connection of the dissolved air tank 1. Specifically, sealing rings 6 are respectively arranged between the first cover body 12 and the liquid adding box body 11 and between the second cover body 13 and the liquid adding box body 11. The first cover body 12 and the second cover body 13 are respectively provided with a sealing groove 19 for accommodating the sealing ring 6, so that the sealing ring 6 is prevented from being deformed to cause interference with the fastening piece 7, and the positioning, the installation and the sealing of the sealing ring 6 are facilitated.

The first cover body 12 is connected with the liquid adding box body 11 through a fastener 7, and the second cover body 13 is connected with the liquid adding box body 11 through a fastener 7. Alternatively, the fastener 7 is a screw or the like. In other embodiments, the first cover 12 and the second cover 13 may be welded or glued to the filling box 11 to ensure the sealing performance.

As shown in fig. 5, the first cover 12 is provided with a positioning column 101, as shown in fig. 3, the liquid feeding box 11 is provided with a positioning hole 102, and the positioning column 101 is inserted into the positioning hole 102, so as to improve the assembly efficiency and precision. As shown in fig. 6, the second cover 13 is provided with a positioning hole 102, and the charging box 11 is provided with a positioning post (not shown) engaged with the positioning hole 102.

The first cover body 12 is in contact fit with the liquid adding box body 11 at the splicing position through a step surface, and the second cover body 13 is in contact fit with the liquid adding box body 11 at the splicing position through a step surface, so that the contact area of the connecting position is increased, and the contact strength can also be improved. In addition, because the internal pressure is greater than the outside when microbubble generator 100 uses, under the prerequisite that the concatenation department step face rationally set up down, can make the concatenation department press more tightly more to avoid splitting because of inside high pressure leads to the concatenation department, the problem of gas leakage.

In some embodiments, as shown in fig. 2 and 4, the microbubble generator 100 includes a baffle 3, and the baffle 3 is located within the gas dissolving chamber 10. The setting of baffle 3 makes the interior splash of dissolved air chamber 10 can strike baffle 3 when spraying on, increases aqueous vapor area of contact, and baffle 3 can prolong the dwell time of rivers in dissolved air chamber 10 in addition, improves the dissolved air effect. In addition, the baffle 3 can also be used as a reinforcing structure to enhance the pressure bearing capacity of the dissolved air tank 1.

Specifically, the baffle 3 is disposed on at least one of the liquid adding box body 11 and the first cover body 12, that is, the baffle 3 may be disposed only on the liquid adding box body 11, the baffle 3 may be disposed only on the first cover body 12, or both the liquid adding box body 11 and the first cover body 12 are provided with the baffle 3.

As shown in fig. 4 and 5, the baffle 3 is provided on the first cover body 12, and at least a part of the baffle 3 is located between the inlet 14 and the outlet 15 in the horizontal direction, so that the flow-resisting action of the baffle 3 is most directly effective. The fact that the baffle 3 is at least partly located between the inlet 14 and the outlet 15 in a horizontal direction means that the baffle 3 may be located completely between the inlet 14 and the outlet 15, and that the baffle 3 may also be located only partly between the inlet 14 and the outlet 15. For example, the baffle 3 may be formed as an arcuate plate or a spherical plate, with the baffle 3 only partially between the inlet 14 and the outlet 15.

The baffle 3 divides at least a part of the gas dissolving chamber 10 into a bubble dissolving region communicating with the inlet 14 and a water flow discharge region communicating with the outlet 15, and water flow in the bubble dissolving region bypasses the baffle 3 and enters the water flow discharge region. Set up like this, bubble dissolving zone and rivers discharge area all have certain space size, and it has enough space to arouse the splash to go into water, and the rivers resistance of going out water is unlikely too big, and the division of two spaces can lengthen rivers flow path as far as possible moreover to be favorable to the dissolving of air.

The inlet 14 is located at the upper part of the gas-dissolving chamber 10 and the outlet 15 is located at the lower part of the gas-dissolving chamber 10. Baffle 3 is vertical to be set up, and the bottom butt of baffle 3 is on the inner wall of dissolved air chamber 10, avoids rivers to flow to rivers discharge area from baffle 3 below.

In the example shown in fig. 4 and 5, the baffle 3 is formed in a plate shape and abuts perpendicularly on the bottom wall of the air-dissolving chamber 10. Therefore, the large bubbles generated by water flow excitation can be better prevented from flowing out of the dissolved air tank 1 (air in the large bubbles is prevented from escaping out of the dissolved air cavity 10 without being dissolved in water), and the production and the manufacture can be facilitated. The plate-like baffle 3 is much easier to be formed integrally with the dissolved air tank 1 or to be fixed to the dissolved air tank 1 by means of insertion or welding than a curved plate. In other embodiments of the invention, the baffle 3 can also be formed as an inclined plate, a double-layer hollow plate, or can be formed as an arc plate, a spherical plate, etc. as mentioned above.

As shown in fig. 3, the liquid adding box body 11 is provided with a caulking groove 103 at the bottom of the gas dissolving cavity 10, and the bottom of the baffle 3 is inserted and matched in the caulking groove 103. The caulking groove 103 facilitates the installation and positioning of the first cover body 12, improves the strength of the baffle 3, and avoids water flow from the bottom of the baffle 3 to bypass the baffle 3.

As shown in fig. 5, the baffle 3 is provided with a diversion rib 31 at a position facing the water flow discharge area, and the diversion rib 31 can improve the strength of the baffle 3 on one hand and can be used for dredging the flow direction of the water flow on the other hand.

In some embodiments, the refill cartridge 11 may be shaped according to the constraints of the installation environment. In the example of fig. 2 and 3, the charging case 11 is an elongated piece, so that the microbubble generator 100 is elongated as a whole and easily installed in a narrow space such as a corner or a slit of the apparatus. When the microbubble generator 100 works, the water pressure inside the dissolved air cavity 10 can reach 1.2MPa at most, so that the sealing performance and fatigue resistance of the liquid adding box body 11 need to be ensured.

Specifically, the inlet 14, the outlet 15, and the baffle 3 are provided on the same end in the longitudinal direction of the dissolved air tank 1, and the air supply port 16 is located on the other end in the longitudinal direction of the dissolved air tank 1.

As shown in fig. 2 and 3, the outer surface of the liquid adding box body 11 is provided with outer reinforcing ribs 17, so that the strength of the liquid adding box body 11 can be increased, and deformation and air leakage caused by internal high pressure can be avoided. Alternatively, the outer ribs 17 may be uniformly spaced, and the outer ribs 17 may also be arranged in a staggered manner. Alternatively, the outer ribs 17 may have a thickness of 2 to 5mm so as not to be easily broken.

As shown in fig. 3, an inner reinforcing rib 18 is arranged in the liquid adding box body 11, and the inner reinforcing rib 18 not only can improve the strength of the liquid adding box body 11, but also is beneficial to dredging water flow and prolonging the flow path of the water flow. Optionally, the thickness of the inner ribs 18 is 2-10 mm.

The liquid adding box body 11 is a plastic part, and the outer reinforcing ribs 17 and the inner reinforcing ribs 18 are integrally formed on the liquid adding box body 11.

The length of the liquid adding box body 11 is between 100 mm and 350mm, and the width and the height of the section of the liquid adding box body 11 are both 30-200 mm.

In some embodiments, as shown in fig. 1 and 2, the first cover 12 is provided with a water inlet pipe 21 and a water outlet pipe 22, the water inlet pipe 21 is connected to the inlet 14, the water outlet pipe 22 is connected to the outlet 15, and the water inlet pipe 21 and the water outlet pipe 22 are located outside the air-dissolving chamber 10, and the arrangement of the two can facilitate the connection. The water inlet pipe 21 and the water outlet pipe 22 are arranged in parallel, so that the connecting direction of the water pipe connectors is also parallel, the water pipe connectors and the water outlet pipe connectors cannot interfere with each other when the water pipe connectors are connected, and other pipes cannot be pulled out by mistake when any pipe is pulled out. The water inlet pipe 21, the water outlet pipe 22 and the first cover 12 are an integral injection molding piece.

As shown in fig. 4 and 5, the first cover 12 is provided with an inner pipe 23, the inner pipe 23 is connected with the inlet 14 and is located in the air dissolving chamber 10, and the free end of the inner pipe 23 is provided with an inner spout 25. The setting of interior pipe 23 is stretched interior spout 25 to the inside of gas dissolving cavity 10 and is kept away from the tip of first lid 12, makes gas dissolving cavity 10 inner wall all around can with interior spout 25 interval certain distance to make full use of gas dissolving cavity 10's inner wall makes the income water spurt out the splash.

The extension direction of the inner extension pipe 23 is perpendicular to the axis of the inner spout 25. Therefore, when water flows through the flow channel in the inner extension pipe 23 and is discharged from the inner nozzle 25, the flowing direction is sharply rotated, a large amount of water splash is splashed in the air dissolving cavity 10, and the air dissolving is facilitated.

More specifically, the inner pipe 23 is horizontally disposed, and the inner nozzle 25 is oriented such that the flow direction of the water flow is instead downwardly disposed. When a certain amount of water is accumulated in the air dissolving cavity 10, the inflow water flowing in the horizontal direction is suddenly sprayed downwards, and the inflow water penetrates into the liquid level, so that water splash caused by collision of the water flow and the water surface is violent, air can be brought into the liquid, and the air dissolving speed is accelerated. Of course, in other embodiments of the present invention, the spraying direction of the inner nozzle 25 may be inclined, that is, the incident direction of the water flow may form an angle with the vertical direction, so that the impact area of the incident water flow is very large.

The inner extension pipe 23 and the water inlet pipe 21 are arranged along the same straight line, and during operation, water flow enters the inner extension pipe 23 through the water inlet pipe 21 and then is sprayed into the gas dissolving cavity 10 from the inner nozzle 25.

As shown in fig. 1 and 2, the second lid 13 is provided with an air supply pipe 24, and the air supply pipe 24 is connected to the air supply port 16. Specifically, the air supply pipe 24 is disposed along the length direction of the liquid adding box body 11, and optionally, the air supply pipe 24 is parallel to both the water inlet pipe 21 and the water outlet pipe 22.

In the embodiment of the present invention, the cavitation member 4 may be configured by a cavitation device known in the art, for example, an ultrasonic generator.

In some alternative embodiments, as shown in fig. 5, at least one venturi channel 41 is provided in the cavitation member 4. In the flow direction of the water flow, the flow area of each venturi passage 41 is gradually reduced and then gradually increased. The cross-sectional shape of the venturi passage 41 is not limited herein, and the cross-section of the venturi passage 41 may be circular for easy machining, but the cross-section of the venturi passage 41 may be elliptical or the like in other embodiments.

After a large amount of air solute water in the dissolved air cavity 10 flows into the cavitation component 4, the air solute water cannot smoothly flow out through the venturi channel 41, and great pressure difference is formed at two ends of the venturi channel 41, which is beneficial to completing the cavitation action. Specifically, the relevant principle of cavitation is:

the average speed, average pressure and cross-sectional area at the inlet end of the venturi channel 41 are respectively V1, P1 and S1, the average speed, average pressure and cross-sectional area at the minimum cross-sectional area of the venturi channel 41 are respectively V2, P2 and S2, the density of water is rho, and under the working state, tap water is assumed as a working medium, and the relation formula is satisfied: S1V 1 ═ S2V 2.

The relationship can be obtained using bernoulli's law and the continuity equation: v1²/2+P1/ρ＝V2²/2+P2/ρ。

In this process, by controlling the changes of S1 and S2, the flow velocity increases at the minimum point of the cross section in the venturi passage 41, the pressure decreases at the minimum point of the cross section, and thus the air dissolved in the water is released in the form of micro bubbles.

In some embodiments, the cavitation member 4 is screwed to the outlet 15, and optionally, the cavitation member 4 is provided with an external thread, the outlet pipe 22 is provided with an internal thread, and the cavitation member 4 can be screwed to the outlet pipe 22. Specifically, a sealing gasket 61 is arranged between the cavitation member 4 and the gas dissolving tank 1, so that the sealing performance of the connection part of the cavitation member 4 and the gas dissolving tank 1 is ensured.

Specifically, the minimum inner diameter of the inlet 14 is 2 to 5 times the minimum inner diameter of the cavitation member 4. Therefore, in the working process of the micro-bubble generator 100, the water inlet flow rate is greater than the water outlet flow rate in most of time, so that the air space in the air dissolving cavity 10 is extruded, and the pressure gradually rises. When the cross-section of the inlet 14 is circular, the diameter of the smallest cross-section of the inlet 14 is its smallest inner diameter. When the cross-section of the inlet 14 is non-circular, the effective diameter of the circle where the cross-sectional area of the inlet 14 is the smallest is its smallest inner diameter.

More specifically, when there is only one venturi passage 41 in the cavitation member 4, the minimum inner diameter of the cavitation member 4 refers to the diameter at the minimum section of the venturi passage 41. When the cavitation member 4 is provided with a plurality of venturi passages 41 therein, the minimum inner diameter thereof is the effective circular diameter at which the cross-sectional area is the smallest. The effective circle at the smallest cross-sectional area in the cavitation member 4 has an area equal to the sum of the smallest cross-sectional areas of all the venturi passages 41.

In some embodiments, as shown in fig. 1 and 2, the microbubble generator 100 further includes a check valve 5 provided at the air supply opening 16 such that outside air is pressed into the air chamber 10 in a single direction and neither air nor water in the air chamber 10 can be discharged through the air supply opening 16.

Specifically, the check valve 5 has a double-valve-core structure, so that double-sealing and leakage-proof guarantee can be achieved. And because the structure of the double valve core makes the air blow into the air dissolving cavity 10, the air needs to pass through the double valve core 50 in sequence, and the charged air is buffered once when the valve core 50 is opened once. When water or air in the cavity applies pressure to the valve core 50, the two valve cores 50 share the pressure, so that the water in the cavity can not crush the one-way valve 5 under the condition that the pressure in the cavity is 1.2MPa, and the air can be smoothly fed into the dissolved air tank 1 from the air supplementing port 16 by the one-way valve 5.

More specifically, as shown in fig. 7, the check valve 5 includes: a first valve body 51, a second valve body 52, a third valve body 53, two valve cores 50 and two elastic elements 58, wherein the first valve body 51 is positioned in the air dissolving chamber 10 and is arranged on the second cover body 13, and the first valve body 51 is arranged corresponding to the air supplementing port 16. The second valve body 52 is sleeved on the first valve body 51 to define a first movable cavity 56 between the second cover body 13 and the first valve body 51, an intermediate port 54 is arranged on the second valve body 52, the third valve body 53 is arranged on the second valve body 52 to define a second movable cavity 57 between the second valve body 52 and the third valve body 53, an inner port 55 is arranged on the third valve body 53, and the inner port 55 is communicated with the air dissolving cavity 10. The two valve cores 50 are respectively sleeved on movable cavity movable cavities on the two valve cores 50, the two elastic pieces 58 are respectively arranged in the first movable cavity 56 and the second movable cavity 57, the elastic piece 58 in the first movable cavity 56 is used for driving the valve core 50 towards the direction of blocking the air supplement port 16, and the elastic piece 58 in the second movable cavity 57 is used for driving the valve core 50 towards the direction of blocking the middle port 54. Such a non-return valve 5 is very easy to assemble and easy to overhaul.

The two valve cores 50 are arranged along the air intake direction of the air supply port 16, so that the action directions on the two valve cores 50 are consistent when air is supplied.

The first valve body 51 has a circular tube shape, and the first valve body 51 is integrally formed on the second cover body 13, thereby facilitating the sealing process. Alternatively, the second valve body 52 is formed in a tubular shape having a middle partition, and one end of the tubular shape is fitted over the first valve body 51 and the other end of the tubular shape is fitted over the third valve body 53.

Each valve core 50 comprises a valve cover 501 and a valve column 502 connected to the valve cover 501, the elastic member 58 is a spring, and the elastic member 58 is sleeved on the valve column 502 and abuts against the valve cover 501. The structure of the valve cover 501 and the valve column 502 is adopted, so that the area of the end face of the valve core 50 for sealing the corresponding port is large, the sealing effect is strong, the section of the valve core 50 at the non-sealing matching position is small, and the sleeving and positioning are convenient. The spring is sleeved on the valve column 502, and the valve column 502 can be used for guiding, so that the contraction direction of the elastic piece 58 is limited, and the valve core 50 and the elastic piece 58 are not easy to be blocked.

Specifically, in the first movable chamber 56, arc-shaped surfaces provided in directions away from each other are formed on the end surface of the valve cover 501 and the corresponding position of the second lid body 13 to the valve cover 501, respectively. In the second movable chamber 57, arc-shaped surfaces provided in a direction away from each other are formed on the end surface of the valve cover 501 and the corresponding position of the second valve body 52 to the valve cover 501, respectively. With such an arrangement, when outside air is blown into the check valve 5, the air is blown onto the end surface of the valve cover 501, the arc-shaped arrangement of the end surface of the valve cover 501 can lead the air to be uniformly guided to the periphery of the valve cover 501, and similarly, the surfaces provided with the air supplementing port 16 and the middle port 54 are arc-shaped surfaces, and the air can also be uniformly guided to the periphery. The air that can make the insufflate like this equipartition on whole valve gap 501 terminal surface to it is steady when making valve gap 501 open, avoids the uneven skew dead phenomenon of card that leads to of valve gap 501 atress, and after finishing blowing simultaneously, when valve gap 501 return, the arc sets up and makes valve gap 501 terminal surface can play certain cushioning effect.

In the specific example of fig. 1-7, water is introduced from the water inlet pipe 21 on the first cover 12, and the water in the water inlet pipe 21 flows from the inner extension pipe 23 to the inner spout 25 and then is sprayed downward from the inner spout 25 into the gas-dissolving chamber 10. The water sprayed into the air dissolving cavity 10 is discharged from the cavitation member 4 connected to the water outlet pipe 22 after dissolving the air. When the water pressure in the cavity does not reach the threshold value, the water inlet amount in unit time is higher than the water outlet amount, so that high pressure is formed in the sealed air dissolving cavity 10, air is dissolved in the water under the action of the pressure, the cavitation part 4 is a cavitation device manufactured by utilizing the Venturi effect, and after water containing high-concentration air solute enters the cavitation part 4, the water is manufactured into micro-bubbles through the cavitation effect of the cavitation part 4 and then is discharged.

After the air dissolving cavity 10 is continuously operated for a period of time, more water is stored, the occupied space is larger, and micro bubbles in the air dissolving cavity 10 are broken and disappear while water is drained. At this time, the water inlet pipe 21 needs to be controlled to pause, the air pump blows air into the air dissolving cavity 10 through the air supplementing pipe 24 on the second cover body 13 to discharge the part of water with low content of micro-bubbles stored in the air dissolving cavity 10, and then a new period begins, and the water enters the air dissolving cavity 10 through the water inlet pipe 21 again.

The washing apparatus according to an embodiment of the present invention includes the microbubble generator 100 according to the above-described embodiment of the present invention, and the structure of the microbubble generator 100 will not be described herein again.

According to the washing device provided by the embodiment of the invention, through the ingenious design of the micro-bubble generator 100, the flow speed difference is formed by utilizing the water flow in and out of the dissolved air tank 1, and the pressure in the dissolved air tank 11 is gradually increased to form a high-pressure cavity, so that the dissolved air quantity can be increased. Cavitation spare 4 enables high concentration air solution to make the microbubble fast, and simple structure installs easily. The invention provides a micro-bubble generator 100 based on a Venturi effect and a cavitation effect, and the device has a simple structure, can generate more bubbles in a short time, and is good in bubble making effect and convenient to install. When the washing machine is combined with a washing machine, the dissolving of dirt among clothes fibers can be accelerated by means of impact force generated by explosion of micro bubbles, and the washing efficiency is improved. The micro-bubble water is used as washing water, so that the using amount of washing powder or detergent can be reduced, water and electricity resources are saved, and the residual washing powder or detergent on clothes is reduced.

Other configurations of the washing apparatus according to the embodiment of the present invention, such as the structure and operation of the motor and decelerator, the drain pump, etc., are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A microbubble generator, comprising:

a dissolved air tank defining a dissolved air cavity therein, the dissolved air tank having an inlet and an outlet for water flow, the inlet being located above the outlet;

the baffle is arranged in the gas dissolving tank, at least one part of the gas dissolving cavity is divided into a bubble dissolving area communicated with the inlet and a water flow discharging area communicated with the outlet by the baffle, and water flow in the bubble dissolving area bypasses the baffle and enters the water flow discharging area;

the cavitation piece is arranged outside the gas dissolving tank and connected with the outlet, or the cavitation piece is arranged at the outlet.

2. The microbubble generator of claim 1, wherein the dissolved air tank comprises a liquid feeding box body, and a first cover body and a second cover body respectively arranged at two ends of the liquid feeding box body, and the first cover body and the second cover body are respectively connected and matched with the liquid feeding box body to seal the dissolved air cavity.

3. The microbubble generator as claimed in claim 2, wherein the baffle is provided on the first cover, at least a part of the baffle being located between the inlet and the outlet in a horizontal direction.

4. The microbubble generator according to claim 1, wherein the dissolved air tank has an elongated shape, and the inlet, the outlet, and the baffle are provided at the same end in the length direction of the dissolved air tank.

5. The microbubble generator of claim 3, wherein the inlet, the outlet, and the baffle are provided on the first cover.

6. The microbubble generator as claimed in claim 4, wherein the dissolved air tank is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the inlet, the water outlet pipe is connected with the outlet, and the water inlet pipe and the water outlet pipe are both arranged along the length direction of the dissolved air tank.

7. The microbubble generator as claimed in claim 1, wherein an inner extension pipe is provided on the dissolved air tank, the inner extension pipe is connected to the inlet and located in the dissolved air chamber, and a free end of the inner extension pipe is provided with an inner spout.

8. The microbubble generator as claimed in claim 7, wherein the inner extension pipe extends in a direction perpendicular to an axis of the inner nozzle.

9. The microbubble generator as claimed in claim 1, wherein the baffle is provided with a flow dividing rib toward the water current discharge region.

10. The microbubble generator of claim 2, wherein sealing rings are disposed between the first cover and the liquid feeding box body, and between the second cover and the liquid feeding box body.

11. The microbubble generator as claimed in claim 10, wherein the first cover and the second cover are respectively provided with a sealing groove for positioning the sealing ring.

12. A washing apparatus comprising the microbubble generator according to any one of claims 1 to 11.