The present invention relates to a micro bubble generating device, and more particularly to a micro bubble generating device for softening the water, increasing the air content of the water and improving the fineness of the bubbles.
The conventional aerator is mainly composed of a pump, a water outlet tube communicating with the pump, and an air-liquid mixing tube connecting the water outlet tube. The water outlet tube diameter is tapered from the pump toward the air-liquid mixing tube. The air-liquid mixing tube comprises a conduit connecting the water outlet tube, and an air inlet tube communicating with the outside air, and the conduit has a diameter larger than that of the water outlet tube. When the pump draws the water out and pressurizes it to send to the junction of the water outlet tube and the conduit, the water will form a negative pressure after entering the conduit, and the negative pressure will cause the outside air to be sucked into the air-liquid mixing tube from the air inlet tube, and the air is mixed with the water to form bubbles. The mixed bubble water is guided to an object to be washed, the objective of rinsing and sterilizing through the aeration of water can be achieved. If the aeration is used to rinse vegetables, purified water with high air content also has the effect of decomposing pesticides.
However, when the water of the conventional aerator structure flows through the air-liquid mixing tube, the bubble volume is determined by the volume of the air inlet tube and the water pressure of the pump. In addition, the water pressure of the pump must maintain the water above a specific flow rate in order that the air can be drawn in to form an air-liquid mixture. Therefore, under the premise of unable to change the water pressure or reduce the flow rate arbitrarily, the user cannot use the conventional aerator structure to change the average volume of bubbles generated in the air-liquid mixing tube, so when the user needs finer bubbles for water purification, the conventional aerators cannot meet the requirement. In addition, the air-liquid mixture produced by the aforementioned bubble mixing device has a very low air content, and the bubble volume is large, so it is difficult to maintain the shape of the bubble for a long time, also it is required to match with a high water pressure to be possible of producing an air-liquid mixture with an air content, and it is not possible to produce an air-liquid mixture with a milky white color containing a large amount of dense and fine bubbles. Therefore, how to improve the drawbacks of the aforementioned prior art is an issue that the industry is eager to overcome.
An object of the present invention is to improve the problems that the conventional air-liquid mixing device cannot be used in a low water pressure state or the outputted air-liquid mixture is insufficient in the amount of bubbles, and the density and fineness of bubbles are insufficient.
In order to achieve the above object, the present invention provides a micro bubble generating device disposed at one end of a liquid supply device. The micro bubble generating device comprises a water inlet unit, a water outlet unit, an air inlet groove, and a first sleeve. The water inlet unit comprises at least one first passage penetrating the water inlet unit, and a side of the water inlet unit penetrated by the first passage is provided with a first connecting surface; the water outlet unit comprises at least one second passage penetrating the water outlet unit, and a side of the water outlet unit penetrated by the second passage is provided with a second connecting surface, wherein the water inlet unit is disposed on the water outlet unit, and the first connecting surface and the second connecting surface partially abut against each other to form the air inlet groove between the first connecting surface of the water inlet unit and the second connecting surface of the water outlet unit, and the second passage communicates with the first passage, and the air inlet groove communicates an external air with the first passage and the second passage. The air inlet groove comprises a third passage and a first accommodating chamber circumferentially disposed around the third passage, the first accommodating chamber has a first spacing disposed perpendicularly to and between the first connecting surface and the second connecting surface, and the third passage has a second spacing between the first connecting surface and the second connecting surface. Wherein the first spacing is different from the second spacing; the first sleeve is disposed at a side of the water outlet unit opposite to the second connecting surface, the first sleeve is formed with a first side wall parallel to a first direction, an end of the first sleeve is formed with a first flange parallel to a second direction, and the first direction is orthogonal to the second direction.
Further, the first connecting surface of the water inlet unit is disposed with an abutting portion protruding toward the second connecting surface of the water outlet unit, the abutting portion is abutted at the second connecting surface, and the third passage is circumferentially disposed around the abutting portion. The first side wall of the first sleeve is disposed with at least one venting through hole communicating with the first accommodating chamber at a position opposite to the first accommodating chamber, and the water inlet unit and the water outlet unit are accommodated in the first sleeve.
Further, an end of the first passage is defined as a first water inlet and another end of the first passage is defined as a first water outlet, the first water outlet is located at the first connecting surface, and the first passage is tapered from the first water inlet toward the first water outlet.
Further, an end of the second passage is defined as a second water inlet and another end is defined as a second water outlet, a water guiding portion is disposed between the second water inlet and the second water outlet. The second water inlet is located at the second connecting surface, and is tapered toward the water guiding portion. The second water outlet is enlarged in parallel with the first direction and away from the water guiding portion.
Further, the water guiding portion has a third spacing at the second direction, and a length ratio of the second spacing to the third spacing is between 1:20 and 1:100.
Further, the first water outlet has a fourth spacing at the second direction, and a length ratio of the second spacing to the fourth spacing is greater than 1:1 and less than or equal to 1:3.
Further, when viewed in the cross-sectional direction, the fourth spacing of the first water outlet is smaller than the second water inlet at an extending position of the second connecting surface.
Further, the first spacing is greater than the second spacing.
Further, the second connecting surface of the water outlet unit is disposed with an abutting portion protruding toward the first connecting surface of the water inlet unit, the abutting portion is abutted at the first connecting surface, and the third passage is circumferentially disposed around the abutting portion.
Further, the water outlet unit is formed with a second side wall parallel to the first direction, the second side wall is circumferentially disposed around the water inlet unit and the first side wall, and the second side wall is disposed with at least one venting through hole corresponding to the first accommodating chamber and communicating with the first accommodating chamber.
Further, the water inlet unit is formed with a third side wall parallel to the first direction, the third side wall is circumferentially disposed around the water outlet unit and the first side wall, and the third side wall is disposed with at least one venting through hole corresponding to the first accommodating chamber and communicating with the first accommodating chamber.
Further, the micro bubble generating device further comprises a second sleeve, the second sleeve accommodates the water inlet unit, the water outlet unit, the air inlet groove and the first sleeve, and fixes the micro bubble generating device to the liquid supply device.
Further, the micro bubble generating device comprises a aerator mesh assembly disposed between the water outlet unit and the first sleeve, wherein the aerator mesh assembly comprises at least one partition and at least one aerator mesh disposed at a side of the partition along the first direction, the partition has a fourth passage penetrating through the partition, the fourth passage communicates with the second passage, and each of the aerator meshes further has a plurality of sieve holes.
Further, the farther a number of the aerator mesh disposed between the two adjacent partitions is from the second connecting surface, the greater the number of the aerator mesh disposed between the partitions.
Further, a size of each of the sieve holes is between 0.048 mm and 0.3 mm.
Further, another side of the partition along the first direction disposed with at least one aerator mesh, a number of the aerator meshes disposed at the two sides of the partition is increased as a distance from the second connecting surface is increased, and projections of the sieve holes of the aerator meshes disposed at two sides of the partition onto the second connecting surface is smaller as the distance from the second connecting surface is increased.
Further, a height of each of the partitions at the first direction is preferably between 0.2 mm and 1 mm.
Therefore, through the third passage of the air inlet groove and the first accommodating chamber circumferentially disposed around the third passage, when arbitrary water flows through the water inlet unit and the water outlet unit, the present invention allows the outside air to be capable of simply passing through the venting through hole, the first accommodating chamber, and the third passage of the air inlet groove, so that the outside air enters the second passage after generating sound wave oscillation through the air inlet groove to mix air with liquid, and then air bubbles in the water are further cut and refined by the aerator meshes. Additionally, the air inlet groove further utilizes the arrangement of the first accommodating chamber and the third passage having a shorter length, so that the water under any water pressure can contain a large amount of dense and fine bubbles, thereby the present invention not only reduces the water pressure requirement of the water for the micro bubble generating device to generate the negative pressure, but also increases the efficiency of air-liquid mixing.
The technical features and operation modes of the present application described in the following preferred embodiments in conjunction with the accompanying figures are provided as reference for examining. Further, the proportions in figures of the present invention are not necessarily drawn according to actual scales in order to facilitate illustrating. The proportions in the figures are not intended to limit the scope of the requested claims.
Furthermore, the ordinal numbers such as “first”, “second”, and the like used in the specification and the claims to modify the elements of the claims, are not intended to mean and represent that the claimed elements have any preceding ordinal numbers, nor do they represent the order of a claimed element and another claimed element, or the order of the manufacturing method. The use of these ordinal numbers are only used to make a claimed element with a certain name distinguishable from another claimed element with the same name.
In addition, the positions mentioned in the specification and the claims, such as “on”, “upper”, “above”, “under”, “lower” or “below”, can mean that the two elements are in direct contact, or the two elements are not in direct contact. When a value is defined between a first value and a second value, the defined value comprises the first value, the second value, or any value between the first value and the second value.
Furthermore, the features of the various embodiments disclosed herein can be combined with one another to form another embodiment.
For the techniques of the present invention, please refer to FIG. 1,
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In this embodiment, each of the first passages 11 is tapered from the first water inlet 111 toward the first water outlet 112, and the fourth spacing L4 at the first water outlet 112 is smaller than a diameter of the second water inlet 211 at a extending position of the second connecting surface 22, so that after the water passes through the first passage 11, the water is pressurized first due to the tapered diameter and then flow to the second passage 21, and a Venturi effect is occurred in the air inlet groove 30 to cause the external air to pass through the first accommodating chamber 32 and the third passage 31 of the air inlet groove 30 from the venting through hole 43, and allow the external air to be mixed with the water in the first passage 11. Then, the water mixed with the external air flows into the second passage 21. As shown in
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Number | Date | Country | Kind |
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107114498 | Apr 2018 | TW | national |
Number | Name | Date | Kind |
---|---|---|---|
2747930 | Hyde | May 1956 | A |
2799487 | Aghnides | Jul 1957 | A |
2990885 | Brazier | Jul 1961 | A |
3554451 | Aghnides | Jan 1971 | A |
4403739 | Knapp | Sep 1983 | A |
9016602 | Grether | Apr 2015 | B2 |
10695726 | Tian | Jun 2020 | B2 |
20170304782 | Wu | Oct 2017 | A1 |
20190060846 | Juan | Feb 2019 | A1 |
Number | Date | Country | |
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20190330829 A1 | Oct 2019 | US |