CA1282098C - Faucet aerator - Google Patents
Faucet aeratorInfo
- Publication number
- CA1282098C CA1282098C CA000518788A CA518788A CA1282098C CA 1282098 C CA1282098 C CA 1282098C CA 000518788 A CA000518788 A CA 000518788A CA 518788 A CA518788 A CA 518788A CA 1282098 C CA1282098 C CA 1282098C
- Authority
- CA
- Canada
- Prior art keywords
- screens
- screen
- aerator
- housing
- faucet aerator
- 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.)
- Expired - Lifetime
Links
Landscapes
- Domestic Plumbing Installations (AREA)
Abstract
ABSTRACT
This invention relate to a faucet aerator with a cylindrical housing, the latter having a number of air slots and below these slots screens are inserted into the housing. The aerator can be inserted into a cylindrical casing, which in turn can be attached to a faucet nozzle.
In the conventional aerator the peripheral edges of the screens have a spacer flange to space the screens apart and thus achieve optimal water/air mixing. However, such screen flanges increase the aerator's manufacturing costs and the present invention proposes an aerator with considerably lower production expenses when compared to the current ones, ensuring at the same time an intensive water/air mixture. The aerator of the present invention achieves these objectives by providing a lenticular screen assembly made up of two curved screens.
This invention relate to a faucet aerator with a cylindrical housing, the latter having a number of air slots and below these slots screens are inserted into the housing. The aerator can be inserted into a cylindrical casing, which in turn can be attached to a faucet nozzle.
In the conventional aerator the peripheral edges of the screens have a spacer flange to space the screens apart and thus achieve optimal water/air mixing. However, such screen flanges increase the aerator's manufacturing costs and the present invention proposes an aerator with considerably lower production expenses when compared to the current ones, ensuring at the same time an intensive water/air mixture. The aerator of the present invention achieves these objectives by providing a lenticular screen assembly made up of two curved screens.
Description
~L2~09~
This invention is directed toward a faucet aerator with a cylindrical housing containing air slots and having, below the latter, screens inserted in the housing. The aerator is insertable in a cylindrical casing which in turn attaches to the faucet nozzle.
Aerators are disigned to add air to water flowing from Faucets. To this end, air flows laterally into the aerator, through air slots in the housing7 and this air is mixed with the flowing water to increase the flow and to muzzle the attendant noise. Below the air slots there are a number of separate screens which split the water stream and thus behind each screen a thorough mixing of the d;vided water stream with air occurs. These screens are flat, or nearly so, and have on their peripheral edges spacer flanges, so that the adjoining screens come to rest on each other by way of their flanges, thereby causing separation of adjacent screens.
Conventional aerators have proved their effectiveness. However, one disadvantage is that the manufacture of spacer Flanges of the individual aerator screens involves certain costs, and in addition in the course of time the outer or downstream screens may tend to become clogged.
The purpose of the present invention is to provide an aerator of the described kind which is chaeper to produce than the conventional ones but which ensures at the ~ 2~g~
same time that a thorough water/air mixing results.
This problem is solved in that at least one lenticular screen arrangement, consisting of two screens, is provided.
On account of the lenticular screen arrangement, both screens of the arrangement can be stacked directly on their peripheral edges without need;ng any spacer flanges.
Each screen has a curved surface and both screens are assembled in a lenticular arrangement in such fash;on that the screens are curved in oppos;te directions. Productiun of these screens is extremely simple, it only being required that they are punched out indiv;dually and curved.
The screens may be fabricated from metal or plastic material, and be either in a mesh or perforated form. Tests have demontrated that optimal water/air mixing results whenever the screen arrangement consists of a coarse screen and a fine screen, the former positioned downstream of the latter. Even two coarse screens produce a satisfactory water flow and for optimal water/air mixing it suffices that there be only a single lenticular screen arrangement.
When using the coarse screen downstream of the fine screen in a preferred embodiment, the aerator based on this invention records a longer lifespan due to delayed calcium deposit formation thereon. This is because the coarse screen, after discontinuation of the water flow through the ~ L2 8~ 3~3 aerator not only retains less water but the mineral deposits caused by the evaporat;on of res;dual water clogs up the wider mesh at a slower rate.
Low cost production of the screens and of screen arrangements arises if two screens similarly curved in the same direction are joined at their peripheral edges by a crosspiece, and then one screen is folded relative to the other to form the lenticular screen arrangement. The screens joined by a crosspiece can be formed simultaneously, and by folding the screens in such manner that their edges are stacked and the cur~ing of the screens goes in oppos;te directions, a lent;cular screen arrangement is formed.
Aerator normally have, above the a;r slots ;n the housing, a round cap-shaped perforated part, which splits the water stream before the air slots, so that in this area there is already an increased water/air mixing. The side of the perforated part facing the screen arrangement has at least one spacer, the outer end of which l;es against the upper or upstream screen in the arrangement. Ow;ng to the configuration of the perforated part and its spacer, the latter presses the upstream screen against the lower or downstream screen, ensuring that the position of the screen arrangement is malntained in the housing.
.
A particularly satisfactory water flow by using the new screen layout is obta;ned when combining it w;th a flow Z~
restricting or controlling device located above theperforated part.
Ideally such flow restricting device consists of a relatively flexible disk placed on the upstream surface of the perforated part, which is ribbed. The disk has at least one cutout for a diminished flow cross section. The ribbing on the surface of the perforated part preferably runs radially from the center outwards. The cutout in the relatively flex;ble d;sk is ideally formed by a central aperture. Water entering the housing runs via this central aperture into a hollow space between the disk and the perforated part. The water flow is div;ded in the hollow space by the ribbing, and then flows through the perforated part, past the a;r slots7 and reaches the screen arrangement. Due to the central aperture, the water flows above the a;r slots ma;nly in the middle of the faucet nozzle and only gets diffused further on. As~de from improved water/air mixing it is possible to modify the water flow through the faucet nozzle by chosing d;fferent aperture sizes ;n the disk. Further adjustment can be ach;eved by the relatively flex;ble nature of the d;sk, so that at high water pressure it ;s pressed part;ally into the ribbing channels.
The hous;ng above the perforated part and above the disk ideally has fi~ted thereto an outward-curved screen, preferably a fine gauge screen~ for the function of f;ltering out large dirt part;cles ;n the water flow.
This invention is directed toward a faucet aerator with a cylindrical housing containing air slots and having, below the latter, screens inserted in the housing. The aerator is insertable in a cylindrical casing which in turn attaches to the faucet nozzle.
Aerators are disigned to add air to water flowing from Faucets. To this end, air flows laterally into the aerator, through air slots in the housing7 and this air is mixed with the flowing water to increase the flow and to muzzle the attendant noise. Below the air slots there are a number of separate screens which split the water stream and thus behind each screen a thorough mixing of the d;vided water stream with air occurs. These screens are flat, or nearly so, and have on their peripheral edges spacer flanges, so that the adjoining screens come to rest on each other by way of their flanges, thereby causing separation of adjacent screens.
Conventional aerators have proved their effectiveness. However, one disadvantage is that the manufacture of spacer Flanges of the individual aerator screens involves certain costs, and in addition in the course of time the outer or downstream screens may tend to become clogged.
The purpose of the present invention is to provide an aerator of the described kind which is chaeper to produce than the conventional ones but which ensures at the ~ 2~g~
same time that a thorough water/air mixing results.
This problem is solved in that at least one lenticular screen arrangement, consisting of two screens, is provided.
On account of the lenticular screen arrangement, both screens of the arrangement can be stacked directly on their peripheral edges without need;ng any spacer flanges.
Each screen has a curved surface and both screens are assembled in a lenticular arrangement in such fash;on that the screens are curved in oppos;te directions. Productiun of these screens is extremely simple, it only being required that they are punched out indiv;dually and curved.
The screens may be fabricated from metal or plastic material, and be either in a mesh or perforated form. Tests have demontrated that optimal water/air mixing results whenever the screen arrangement consists of a coarse screen and a fine screen, the former positioned downstream of the latter. Even two coarse screens produce a satisfactory water flow and for optimal water/air mixing it suffices that there be only a single lenticular screen arrangement.
When using the coarse screen downstream of the fine screen in a preferred embodiment, the aerator based on this invention records a longer lifespan due to delayed calcium deposit formation thereon. This is because the coarse screen, after discontinuation of the water flow through the ~ L2 8~ 3~3 aerator not only retains less water but the mineral deposits caused by the evaporat;on of res;dual water clogs up the wider mesh at a slower rate.
Low cost production of the screens and of screen arrangements arises if two screens similarly curved in the same direction are joined at their peripheral edges by a crosspiece, and then one screen is folded relative to the other to form the lenticular screen arrangement. The screens joined by a crosspiece can be formed simultaneously, and by folding the screens in such manner that their edges are stacked and the cur~ing of the screens goes in oppos;te directions, a lent;cular screen arrangement is formed.
Aerator normally have, above the a;r slots ;n the housing, a round cap-shaped perforated part, which splits the water stream before the air slots, so that in this area there is already an increased water/air mixing. The side of the perforated part facing the screen arrangement has at least one spacer, the outer end of which l;es against the upper or upstream screen in the arrangement. Ow;ng to the configuration of the perforated part and its spacer, the latter presses the upstream screen against the lower or downstream screen, ensuring that the position of the screen arrangement is malntained in the housing.
.
A particularly satisfactory water flow by using the new screen layout is obta;ned when combining it w;th a flow Z~
restricting or controlling device located above theperforated part.
Ideally such flow restricting device consists of a relatively flexible disk placed on the upstream surface of the perforated part, which is ribbed. The disk has at least one cutout for a diminished flow cross section. The ribbing on the surface of the perforated part preferably runs radially from the center outwards. The cutout in the relatively flex;ble d;sk is ideally formed by a central aperture. Water entering the housing runs via this central aperture into a hollow space between the disk and the perforated part. The water flow is div;ded in the hollow space by the ribbing, and then flows through the perforated part, past the a;r slots7 and reaches the screen arrangement. Due to the central aperture, the water flows above the a;r slots ma;nly in the middle of the faucet nozzle and only gets diffused further on. As~de from improved water/air mixing it is possible to modify the water flow through the faucet nozzle by chosing d;fferent aperture sizes ;n the disk. Further adjustment can be ach;eved by the relatively flex;ble nature of the d;sk, so that at high water pressure it ;s pressed part;ally into the ribbing channels.
The hous;ng above the perforated part and above the disk ideally has fi~ted thereto an outward-curved screen, preferably a fine gauge screen~ for the function of f;ltering out large dirt part;cles ;n the water flow.
~L~32 ~3~3~3 This screen should be installed in the housing so as to permit easy removal, cleaning and repositioning.
The invention will now be described in detail having reference to the accompanying drawings in which:
Figure 1 represents a front cross section view of the aerator, of the present invention, and;
Figure 2 is the top view thereof, minus certain components.
Figure 1 shows an aerator 1 having a cylindrical housing 2 with air slots 3, in the wall of the housing. A
number of these air slots are distributed about the housing 2. Water flows through this housing 2 in figure 1 from top to bottom. On its lower end, the hous;ng has a surrounding support part 4 oriented inwards, which supports the screen arrangement 5 that is inserted at assembly from the top of the housing 2. The screen arrangement 5 consists of two screens assembled in a lenticular arrangement. The upper or upstream screen 6 is curved upwards and the lower or downstream screen 7 is curved downwards. The peripheral edges of the screens 6 and 7 rest against each other in the housing 2. As may be observed from figure 1, the upper screen 6 is fine mesh and the lower screen 7 is coarse mesh. The screens are preferably produced from a metal wire and the diameter thereof in the coarse screen should be .5 mm, with a mesh size of about .8 mm, while the diameter of the fine screen wire should be around .15 to .20 mm, with a ~ 282~8 mesh size of .1 to .2 mm.
The upper part 8 the housing 2 is oF a greater inside diameter than the lower part. Housing 2, in the area of the upper part 8 accepts a round cap-shaped part 9, having in its bottom wall 10, a number of holes 11. A
spacer 12 projects down from the wall 10 toward the screen arrangement 5 and contacts upper screen 6 of the arrangement 5.
The spacer 12 ensures that part 9 holds the soreen arrangement 5 in its position in aerator 1. The upper suface of the bottom wall 10 of part 9 has ribs 13 radiating from its middle. The ribs 13 support disk 14 equipped with a central aperture 15. This disk 14 rests on the ribs 13 and also on a circular shoulder 16 Formed above wall 10 on part 9. Above d;sk 14 sits a ~;ne screen 17 which is curved upstream. A flexible ring 18, held by part 9, prevents the screen 17 and the disk 14 from separating from part 9. F;gure 2 is a top view of the aerator shown in figure 1, minus ring 18 fine screen 17 and disk 14.
The invention will now be described in detail having reference to the accompanying drawings in which:
Figure 1 represents a front cross section view of the aerator, of the present invention, and;
Figure 2 is the top view thereof, minus certain components.
Figure 1 shows an aerator 1 having a cylindrical housing 2 with air slots 3, in the wall of the housing. A
number of these air slots are distributed about the housing 2. Water flows through this housing 2 in figure 1 from top to bottom. On its lower end, the hous;ng has a surrounding support part 4 oriented inwards, which supports the screen arrangement 5 that is inserted at assembly from the top of the housing 2. The screen arrangement 5 consists of two screens assembled in a lenticular arrangement. The upper or upstream screen 6 is curved upwards and the lower or downstream screen 7 is curved downwards. The peripheral edges of the screens 6 and 7 rest against each other in the housing 2. As may be observed from figure 1, the upper screen 6 is fine mesh and the lower screen 7 is coarse mesh. The screens are preferably produced from a metal wire and the diameter thereof in the coarse screen should be .5 mm, with a mesh size of about .8 mm, while the diameter of the fine screen wire should be around .15 to .20 mm, with a ~ 282~8 mesh size of .1 to .2 mm.
The upper part 8 the housing 2 is oF a greater inside diameter than the lower part. Housing 2, in the area of the upper part 8 accepts a round cap-shaped part 9, having in its bottom wall 10, a number of holes 11. A
spacer 12 projects down from the wall 10 toward the screen arrangement 5 and contacts upper screen 6 of the arrangement 5.
The spacer 12 ensures that part 9 holds the soreen arrangement 5 in its position in aerator 1. The upper suface of the bottom wall 10 of part 9 has ribs 13 radiating from its middle. The ribs 13 support disk 14 equipped with a central aperture 15. This disk 14 rests on the ribs 13 and also on a circular shoulder 16 Formed above wall 10 on part 9. Above d;sk 14 sits a ~;ne screen 17 which is curved upstream. A flexible ring 18, held by part 9, prevents the screen 17 and the disk 14 from separating from part 9. F;gure 2 is a top view of the aerator shown in figure 1, minus ring 18 fine screen 17 and disk 14.
Claims (8)
1. A faucet aerator having: a cylindrical housing with an inlet end and an outlet end and air slots between the inlet and outlet ends; a lenticular screen arrangement in the housing located between the air slots and the outlet end; the screen arrangement consisting of two screens with the screen closest to the inlet end dished toward the inlet end and with the screen closest to the outlet end dished toward the outlet end, at least a major portion of the peri-pheral edges of the two screens directly abutting each other, the central portions of the screens spaced apart to form a lenticular shaped air-water mixing chamber.
2. A faucet aerator as claimed in claim 1 wherein the two screens comprise two separate members.
3. A faucet aerator as claimed in claim 2 wherein the screen closest to the inlet end is a fine screen and wherein the screen closest to the outlet end is a coarse screen.
4. A faucet aerator as claimed in claim 3 wherein the fine screen has a mesh size of 0.1 to 0.2 mm. and the coarse screen has a mesh siuze of 0.8 mm.
5. A faucet aerator as claimed in claim 2 where the two screens are coarse screens having a mesh size of 0.8 mm.
6. A faucet aerator as claimed in claim 1 wherein the two screens are of the same mesh size and are joined by a crosspiece at a por-tion of their peripheral edges.
7. A faucet aerator as claimed in claim 6 wherein the two screens are coarse screens having a mesh size of 0.8 mm.
8. A faucet aerator as claimed in claims 1, 2 or 6 including sup-port means on the housing to support the screen arrangement on one side by the peripheral edges of the screens; a perforated member mounted in the housing between the inlet end and the air slots, the perforated member having means bearing on the other side of the screen arrangement to hold it against the support means; radially extending ribs on the surface of the perforated member nearest the inlet end, the ribs forming radially extending channels leading to the perforations and a relatively flexible disk having a single, centrally located, flow restricting aperture communicating with the inner ends of the channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000518788A CA1282098C (en) | 1986-09-22 | 1986-09-22 | Faucet aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000518788A CA1282098C (en) | 1986-09-22 | 1986-09-22 | Faucet aerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1282098C true CA1282098C (en) | 1991-03-26 |
Family
ID=4133990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000518788A Expired - Lifetime CA1282098C (en) | 1986-09-22 | 1986-09-22 | Faucet aerator |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1282098C (en) |
-
1986
- 1986-09-22 CA CA000518788A patent/CA1282098C/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4789103A (en) | Faucet aerator | |
| US4637552A (en) | Water jet aeration for sanitary fittings and the like | |
| JP3975241B2 (en) | Jet controller | |
| US2643104A (en) | Aerating device | |
| US4000857A (en) | Flow control aerator | |
| US2754097A (en) | Aerator device | |
| US4313564A (en) | Self-cleaning aerator with noise reduction | |
| US5824218A (en) | Permanent espresso filter insert | |
| JP4201351B2 (en) | Jet regulator | |
| US3633824A (en) | Spray-producing device in which the output jets are aerated | |
| CN109642422B (en) | Sanitary component | |
| ZA200509881B (en) | Filtering device,filtering means,and filtration method | |
| US4322292A (en) | Aerator | |
| US2849217A (en) | Aerators | |
| JP2005530610A (en) | Gas-liquid contact tray and method of using the same | |
| EP0903994B1 (en) | Cartridge holder for preparing a cup of coffee with a small-bubble foam layer | |
| EP3638399B1 (en) | Coalescence filter | |
| CA1282098C (en) | Faucet aerator | |
| US5749518A (en) | Adjustable multi-pattern miniature fountain sprinkler | |
| US2787452A (en) | Faucet attachments | |
| US3104819A (en) | Spiral screened fluid mixing devices | |
| US2761662A (en) | Aerating device | |
| US3811619A (en) | Spray producing device | |
| US3835624A (en) | Gas treatment apparatus | |
| US4345719A (en) | Water aerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |