CN221452950U - Water outlet structure and shower device - Google Patents
Water outlet structure and shower device Download PDFInfo
- Publication number
- CN221452950U CN221452950U CN202322946877.7U CN202322946877U CN221452950U CN 221452950 U CN221452950 U CN 221452950U CN 202322946877 U CN202322946877 U CN 202322946877U CN 221452950 U CN221452950 U CN 221452950U
- Authority
- CN
- China
- Prior art keywords
- water outlet
- water
- air inlet
- channel
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 184
- 230000000694 effects Effects 0.000 abstract description 11
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
The utility model discloses a water outlet structure and a shower device with the water outlet structure, wherein the water outlet structure comprises: the venturi pipeline comprises a water inlet channel, a throat part with a reduced mouth and an air inlet cavity which are sequentially communicated; two ends of the unidirectional flow channel are respectively communicated with the atmosphere and the air inlet cavity, and the outside air is conveyed to the air inlet cavity in one direction through the unidirectional flow channel; the water outlet channel is communicated with the air inlet cavity; under the effect of unidirectional overflow prevention of the unidirectional flow passage internal structure, the opening of the air inlet end can be relatively large in size, so that the air inlet end can be effectively prevented from generating sharp noise due to small opening when air flows through the air inlet end while the air inlet function is met, and the efficient noise reduction effect is integrally achieved.
Description
Technical Field
The utility model relates to the technical field of bathroom products, in particular to a water outlet structure and shower equipment.
Background
Some existing water spraying devices, such as showers, use a structure of air suction and pressurization to increase the spraying water pressure. However, when in use, the shower head can generate sharp noise in the process of air suction. The sharp noise very affects the user experience. For this reason, it is necessary to perform noise reduction processing thereon.
Disclosure of utility model
The present utility model aims to solve at least one of the above-mentioned technical problems in the related art to some extent. Therefore, the utility model provides a water outlet structure.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model also provides shower equipment with the water outlet structure.
An outlet structure according to an embodiment of the first aspect of the present utility model includes:
The venturi pipeline comprises a water inlet channel, a throat part and an air inlet cavity which are sequentially communicated, and the throat part is in a gradually-reduced necking shape from the water inlet channel to the air inlet cavity;
the two ends of the unidirectional flow passage are respectively communicated with the atmosphere and the air inlet cavity, and the outside air is conveyed to the air inlet cavity in a unidirectional way through the unidirectional flow passage;
and the water outlet channel is communicated with the air inlet cavity.
The water outlet structure provided by the embodiment of the utility model has at least the following beneficial effects: under the effect of unidirectional overflow prevention of the unidirectional flow passage internal structure, the opening of the air inlet end can be relatively large in size, so that the air inlet end can be effectively prevented from generating sharp noise due to small opening when air flows through the air inlet end while the air inlet function is met, and the efficient noise reduction effect is integrally achieved.
According to some embodiments of the utility model, the one-way flow passage is internally of a tesla valve structure.
According to some embodiments of the utility model, the unidirectional flow passage is internally mounted with a unidirectional valve.
According to some embodiments of the utility model, the throat has a maximum cross-sectional area of water that is less than a maximum cross-sectional area of water at an end of the outlet channel adjacent the inlet chamber.
According to some embodiments of the utility model, the throat has a water cross section with a length D and a width G;
The length of the water cross section of the water outlet channel close to one end of the air inlet cavity is F, and the width of the water outlet channel is H;
it satisfies the following conditions: d is less than or equal to F, and G is less than H.
According to some embodiments of the utility model, the length of the water passing cross section of the air inlet cavity is E, which satisfies D < E < 3D.
According to some embodiments of the utility model, the water flow direction of the water inlet side of the air inlet cavity is in an intersecting orientation with the air flow direction of the air inlet side.
According to some embodiments of the utility model, the air inlet cavity is provided with an air inlet communicated with the unidirectional flow channel, a water inlet communicated with the throat part and a water outlet communicated with the water outlet channel, a section of the water outlet channel connected with the water outlet is a straight pipe section extending in a straight line, and the straight pipe section and the water inlet are positioned on the same straight line;
In the water flow direction of the air inlet cavity, the distance between the air inlet and the water inlet is L 1, the distance between the water inlet and the water outlet is L 2, and the length of the straight pipe section is L 3;
It satisfies the following conditions: 。
according to some embodiments of the utility model, the junction of the water inlet channel and the throat is in the shape of a conical mouth from large to small.
According to some embodiments of the utility model, the water outlet end of the water outlet channel is provided with a water outlet branch or a plurality of water outlet branches connected in parallel.
According to a second aspect of the utility model, a shower apparatus is provided which employs a water outlet arrangement.
The shower device provided by the embodiment of the utility model has at least the following beneficial effects: the shower device has the advantages that the pressure boost and noise reduction are effectively realized in the shower process, and the influence of sharp noise on the shower of a user is reduced.
According to some embodiments of the utility model, the shower apparatus comprises a spray head, one or more groups of water outlet structures are arranged on the spray head, water inlet channels of the water outlet structures are all connected to the same water supply pipeline in parallel, the spray head is provided with a water outlet cavity, a plurality of pores are formed in the water outlet cavity, and the water outlet channels of the water outlet structures are all communicated to the water outlet cavity.
Additional aspects and advantages of the utility model 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 utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of one embodiment of a water outlet structure;
FIG. 2 is a schematic top view of the internal structure of FIG. 1;
FIG. 3 is a schematic diagram of another embodiment of FIG. 2;
FIG. 4 is a schematic diagram of another embodiment of FIG. 2;
FIG. 5 is a schematic view of another embodiment of a water outlet structure
FIG. 6 is a schematic view of the front view internal structure of FIG. 1;
FIG. 7 is a schematic view of a portion of the structure of a shower apparatus;
fig. 8 is a schematic view of the internal structure in the front view direction of fig. 7.
Reference numerals: a venturi conduit 100; a water inlet passage 110; a throat 120; an air inlet chamber 130; an air inlet 131; a water inlet 132; a water outlet 133; a one-way flow channel 200; an intake end 210; a check valve 220; a water outlet passage 300; straight tube section 310; a water outlet branch 320; a shower head 400; a water supply line 410; a water outlet chamber 420; pores 430.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The utility model relates to a water outlet structure, which comprises a venturi pipe 100, a unidirectional flow passage 200 and a water outlet passage 300.
As shown in fig. 1, 2 and 6, venturi 100 includes a water inlet passageway 110, a throat 120 and an air intake chamber 130. The water inlet channel 110, the throat part 120 and the air inlet cavity 130 are sequentially connected, the throat part 120 is in a necking shape, and the throat part 120 gradually reduces from the water inlet channel 110 to the air inlet cavity 130. In this embodiment, a section of the throat 120 adjacent to the water inlet channel 110 is tapered, and a section adjacent to the air inlet chamber 130 is cylindrical. The water inlet channel 110 is connected with external tap water, and water flows from the water inlet channel 110 through the throat 120 and enters the air inlet cavity 130. One end of the one-way flow passage 200 communicates with the atmosphere, and the other end communicates with the intake chamber 130. The water outlet passage 300 communicates with the air inlet chamber 130. The water is conveyed from the venturi tube 100 to the water outlet channel 300, negative pressure is formed when the water flows through the air inlet cavity 130, the air in the external environment is conveyed from one end (the air inlet end 210) of the unidirectional flow channel 200 to the air inlet cavity 130 in a unidirectional way, and the air and the water are mixed in the air inlet cavity 130 and then discharged through the water outlet channel 300, so that the supercharging effect is achieved. During initial water intake or supply, particularly at the instant of the venturi 100 breaking, a significant pressure is created which pushes the water from the intake chamber 130 toward the unidirectional flow passage 200. The direction of the inflow of the gas is the forward direction of the unidirectional flow channel 200, and the unidirectional flow guiding effect of the unidirectional flow channel 200 can prevent the water in the air inlet cavity 130 from being conveyed outwards from the unidirectional flow channel 200, so that the occurrence of water leakage is avoided. That is, under normal use or abrupt pressure change, the unidirectional flow passage 200 can effectively prevent the situation that water overflows along the unidirectional flow passage 200 to the air inlet end 210 to cause incapable air inlet and thus invalid air suction and pressurization functions. Under the effect of unidirectional anti-overflow of the inner structure of the unidirectional flow passage 200, the opening of the air inlet end 210 can be relatively large, so that the air inlet end 210 can be effectively prevented from generating sharp noise due to small opening when air flows through the air inlet end 210 while the air suction function is met, and the efficient noise reduction effect is integrally achieved.
In some embodiments, as shown in fig. 2, the interior of the unidirectional flow passage 200 is a tesla valve structure. Under the unidirectional flow guiding effect of the Tesla valve structure, the gas can prevent water from overflowing, and can effectively avoid turbulent flow and reduce gas noise. Due to the multi-turn construction of the tesla valve structure, the noise generated in the unidirectional flow passage 200 can be reflected layer by layer and gradually reduced, so that the noise is effectively reduced from being transmitted outwards from the air inlet end 210 of the unidirectional flow passage 200.
In some embodiments, as shown in fig. 5, the unidirectional flow passage 200 has a unidirectional valve 220 mounted therein. By controlling the principle of unidirectional fluid flow by the unidirectional valve 220, water is prevented from overflowing to the air inlet end 210 of the unidirectional flow channel 200, so that the purpose of increasing the design size of the opening of the air inlet end 210 is realized.
In some embodiments, the throat 120 has a maximum cross-sectional area of S1 and the outlet channel 300 has a maximum cross-sectional area of S2 near the end of the inlet chamber 130, which satisfies: s1 is less than S2. The maximum water cross-sectional area corresponding to the water inlet channel 110, the throat 120 and the air inlet cavity 130 is changed from large to small and then is changed from large, so that when water is conveyed from the venturi pipeline 100 to the water outlet channel 300, negative pressure is formed in the air inlet cavity 130, and meanwhile, overflow of water to the unidirectional flow channel 200 is reduced or avoided. Specifically, as shown in fig. 2 and 6, the throat 120 has a water cross section with a length D and a width G. The water cross section of the water outlet channel 300 near one end of the air inlet cavity 130 has a length F and a width H; the following parameters are satisfied: d is less than or equal to F, and G is less than H. Further, the length of the water passing cross section of the air inlet cavity 130 is E, which satisfies D < E < 3D.
In some embodiments, the direction of air intake of the unidirectional flow passage 200 relative to the air intake cavity 130 is set according to the actual spatial location of the product. The water flow direction of the water inlet side of the air inlet chamber 130 is oriented to intersect with the air flow direction of the air inlet side thereof. The side of the air intake chamber 130 connected to the throat 120 is the water intake side, and the side of the air intake chamber 130 connected to the unidirectional flow passage 200 is the air intake side. The water flow direction on the air inlet side is A1, and the air flow direction on the air inlet side is A2. A1 intersects A2. As shown in fig. 2, the included angle A1 of A1 and A2 is an acute angle. As shown in fig. 3, the angle A2 between A1 and A2 is a right angle. As shown in fig. 4, the included angle a3 between A1 and A2 is an obtuse angle. Under the action of the unidirectional flow channel 200, the above-mentioned angle arrangement can realize air intake and prevent overflow.
In some embodiments, as shown in fig. 6, the air intake chamber 130 is provided with an air intake 131 communicating with the unidirectional flow passage 200, an air intake 132 communicating with the throat 120, and an air outlet 133 communicating with the water outlet passage 300. The water outlet channel 300 is connected with the water outlet 133 by a straight pipe section 310, and the straight pipe section 310 extends in a straight pipe body. Straight tube section 310 is in line with water inlet 132. In the water flow direction (horizontal direction from left to right in the drawing) of the air inlet chamber 130, the distance between the air inlet 131 and the water inlet 132 is L 1, the distance between the water inlet 132 and the water outlet 133 is L 2, and the length of the straight pipe section 310 is L 3, which satisfies the following conditions: . The position of the air inlet 131 is within the range, so that the negative pressure formed in the air inlet cavity 130 when the water flows through the air inlet cavity 130 can be ensured to meet the effect of accelerating the flow in the water outlet channel 300 after the air suction of the unidirectional flow channel 200 and the water-air mixing pressurization.
In some embodiments, as shown in FIG. 6, the junction of the inlet passage 110 and the throat 120 is in the shape of a tapered mouth from large to small. When the water flow transits from the water inlet channel 110 to the throat 120, the water flow is guided by the conical junction, and the water flow can smoothly flow into the throat 120.
In some embodiments, the water outlet end of the water outlet channel 300 is provided with one water outlet branch 320, or, as shown in fig. 2, the water outlet end of the water outlet channel 300 is provided with a plurality of water outlet branches 320 connected in parallel. The plurality of water outlet branches 320 can be arranged to disperse the water evenly.
The utility model also relates to a shower device, which uses the water outlet structure. The shower device may be a shower head or the like. The water outlet structure can effectively boost pressure and reduce noise in the shower process, and reduces the influence of sharp noise on the shower of a user.
In particular, as shown in fig. 7 and 8, the shower apparatus includes a spray head 400. The shower head 400 may have a disk shape. One or more sets of water outlet structures are provided on the spray head 400. When a plurality of groups of water outlet structures are arranged, the water inlet channels 110 of the water outlet structures are all connected to the same water supply pipeline 410 in parallel. The water supply line 410 is connected to a tap water or hot water apparatus. The water supply pipeline 410 divides water into the water inlet channels 110, and the water outlet structures work synchronously, and the air is sucked synchronously by utilizing the unidirectional flow channels 200, so that the air suction quantity is large, the supercharging effect is effectively ensured, and more importantly, the unidirectional flow channels 200 can greatly reduce the noise while improving the air suction quantity. The spray head 400 is provided with a water outlet cavity 420, and a plurality of fine holes 430 are formed in the water outlet cavity 420. The water outlet channels 300 of the water outlet structures are all communicated to the water outlet cavity 420. The water is collected in the water outlet chamber 420 and then sprayed outward through the respective fine holes 430.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present specification, reference to the term "some particular embodiments" or the like means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A water outlet structure, comprising:
The venturi pipeline (100) comprises a water inlet channel (110), a throat part (120) and an air inlet cavity (130) which are sequentially communicated, wherein the throat part (120) is in a shrinkage shape which gradually reduces from the water inlet channel (110) to the air inlet cavity (130);
The two ends of the unidirectional flow channel (200) are respectively communicated with the atmosphere and the air inlet cavity (130), and the outside air is conveyed to the air inlet cavity (130) in a unidirectional way through the unidirectional flow channel (200);
And a water outlet channel (300), wherein the water outlet channel (300) is communicated with the air inlet cavity (130).
2. The water outlet structure according to claim 1, wherein: the inside of the unidirectional flow passage (200) is of a Tesla valve structure.
3. The water outlet structure according to claim 1, wherein: a one-way valve (220) is arranged in the one-way flow passage (200).
4. The water outlet structure according to claim 1, wherein: the throat (120) has a maximum water cross-sectional area that is less than a maximum water cross-sectional area of an end of the outlet passage (300) proximate the inlet chamber (130).
5. The water outlet structure of claim 4, wherein: the length of the water cross section of the throat part (120) is D, and the width is G;
The length of the water cross section of the water outlet channel (300) close to one end of the air inlet cavity (130) is F, and the width of the water outlet channel is H;
it satisfies the following conditions: d is less than or equal to F, and G is less than H.
6. The water outlet structure of claim 5, wherein: the length of the water passing cross section of the air inlet cavity (130) is E, and D is smaller than E and smaller than 3D.
7. The water outlet structure according to claim 1, wherein: the water flow direction of the water inlet side of the air inlet cavity (130) is intersected with the air flow direction of the air inlet side of the air inlet cavity.
8. The water outlet structure according to claim 1, wherein: the air inlet cavity (130) is provided with an air inlet (131) communicated with the unidirectional flow channel (200), a water inlet (132) communicated with the throat part (120) and a water outlet (133) communicated with the water outlet channel (300), one section of the water outlet channel (300) connected with the water outlet (133) is a straight pipe section (310) extending in a straight line, and the straight pipe section (310) and the water inlet (132) are positioned on the same straight line;
The distance between the air inlet (131) and the water inlet (132) in the water flow direction of the air inlet cavity (130) is L 1, the distance between the water inlet (132) and the water outlet (133) is L 2, and the length of the straight pipe section (310) is L 3;
It satisfies the following conditions: 0.ltoreq.L 1≤(2/3)×(L2+L3).
9. The water outlet structure according to claim 1, wherein: the junction of the water inlet channel (110) and the throat part (120) is in a conical shape from large to small.
10. The water outlet structure according to claim 1, wherein: the water outlet end of the water outlet channel (300) is provided with a water outlet branch (320) or a plurality of water outlet branches (320) which are connected in parallel.
11. A shower apparatus, characterized in that: use of the water outlet structure according to any one of claims 1 to 10.
12. A shower apparatus as claimed in claim 11, wherein: the shower device comprises a shower nozzle (400), one or more groups of water outlet structures are arranged on the shower nozzle (400), water inlet channels (110) of the water outlet structures are all connected to the same water supply pipeline (410) in parallel, the shower nozzle (400) is provided with a water outlet cavity (420), a plurality of fine holes (430) are formed in the water outlet cavity (420), and water outlet channels (300) of the water outlet structures are all communicated to the water outlet cavity (420).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322946877.7U CN221452950U (en) | 2023-11-01 | 2023-11-01 | Water outlet structure and shower device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322946877.7U CN221452950U (en) | 2023-11-01 | 2023-11-01 | Water outlet structure and shower device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221452950U true CN221452950U (en) | 2024-08-02 |
Family
ID=92351081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322946877.7U Active CN221452950U (en) | 2023-11-01 | 2023-11-01 | Water outlet structure and shower device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221452950U (en) |
-
2023
- 2023-11-01 CN CN202322946877.7U patent/CN221452950U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655106A (en) | Wall-attached vibrating jet type liquid-gas jet pump | |
| CN203448002U (en) | Venturi tube jet gas mixer | |
| US20210138410A1 (en) | Microbubble generation device and microbubble generation method, and shower apparatus and oil-water separation apparatus having said microbubble generation device | |
| CN221452950U (en) | Water outlet structure and shower device | |
| CN201500605U (en) | venturi ejector | |
| CN201041171Y (en) | Water-jet pump | |
| CN206836015U (en) | A kind of medicine mixer of jetting type spiral outlet | |
| CN115999418A (en) | Air suction protection structure of micro-bubble device | |
| CN102366738A (en) | Air suction focusing sprinkling device | |
| WO2019080270A1 (en) | Gas mixed pulse cleaning device for intelligent toilet bowl | |
| CN213223610U (en) | Cleaning structure of pipe network water supply pipeline | |
| CN207647824U (en) | Extended-range fluid-flow pump | |
| CN221480970U (en) | Pressurized spray pipe of body cleaner | |
| CN210478645U (en) | Foam generator for high pressure cleaner | |
| CN107906252A (en) | A kind of Anti-blockage water-saving sparger | |
| CN114001176A (en) | Throttle valve and gas water heater with same | |
| CN202174021U (en) | Sprayed water generator | |
| CN207740545U (en) | A kind of Anti-blockage water-saving sparger | |
| CN207385755U (en) | Ejector | |
| CN221472209U (en) | Water spraying mechanism and shower head using same | |
| CN206474318U (en) | A kind of gas-vapor mix shower nozzle | |
| CN215948382U (en) | Water outlet device and intelligent closestool | |
| CN219308568U (en) | Air suction protection structure of micro-bubble device | |
| WO2023000758A1 (en) | Water outlet device and smart toilet | |
| CN102698904B (en) | Air injection device for bathroom |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |